/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/sanfoundry_27_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-13 23:26:19,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-13 23:26:19,286 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-13 23:26:19,316 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-13 23:26:19,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-13 23:26:19,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-13 23:26:19,320 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-13 23:26:19,323 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-13 23:26:19,325 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-13 23:26:19,327 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-13 23:26:19,328 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-13 23:26:19,330 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-13 23:26:19,330 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-13 23:26:19,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-13 23:26:19,334 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-13 23:26:19,336 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-13 23:26:19,338 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-13 23:26:19,339 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-13 23:26:19,342 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-13 23:26:19,345 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-13 23:26:19,347 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-13 23:26:19,349 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-13 23:26:19,352 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-13 23:26:19,353 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-13 23:26:19,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-13 23:26:19,358 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-13 23:26:19,358 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-13 23:26:19,359 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-13 23:26:19,360 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-13 23:26:19,362 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-13 23:26:19,362 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-13 23:26:19,363 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-13 23:26:19,364 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-13 23:26:19,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-13 23:26:19,367 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-13 23:26:19,367 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-13 23:26:19,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-13 23:26:19,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-13 23:26:19,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-13 23:26:19,370 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-13 23:26:19,371 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-13 23:26:19,372 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 23:26:19,402 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-13 23:26:19,402 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-13 23:26:19,404 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-13 23:26:19,405 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-13 23:26:19,405 INFO L138 SettingsManager]: * Use SBE=true [2020-10-13 23:26:19,405 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-13 23:26:19,406 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-13 23:26:19,406 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-13 23:26:19,408 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-13 23:26:19,409 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-13 23:26:19,409 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-13 23:26:19,409 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-13 23:26:19,410 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-13 23:26:19,410 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-13 23:26:19,410 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-13 23:26:19,410 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-13 23:26:19,410 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-13 23:26:19,411 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-13 23:26:19,411 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-13 23:26:19,413 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-13 23:26:19,413 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-13 23:26:19,413 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-13 23:26:19,414 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-13 23:26:19,414 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-13 23:26:19,414 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-13 23:26:19,415 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-13 23:26:19,415 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-13 23:26:19,415 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-13 23:26:19,415 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-13 23:26:19,416 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 23:26:19,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-13 23:26:19,869 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-13 23:26:19,874 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-13 23:26:19,876 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-13 23:26:19,876 INFO L275 PluginConnector]: CDTParser initialized [2020-10-13 23:26:19,877 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i [2020-10-13 23:26:19,971 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e80effb/8071f56386074fb9a996a6cb8f08acf1/FLAG543a7511b [2020-10-13 23:26:20,675 INFO L306 CDTParser]: Found 1 translation units. [2020-10-13 23:26:20,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/sanfoundry_27_ground.i [2020-10-13 23:26:20,686 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e80effb/8071f56386074fb9a996a6cb8f08acf1/FLAG543a7511b [2020-10-13 23:26:20,925 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0e80effb/8071f56386074fb9a996a6cb8f08acf1 [2020-10-13 23:26:20,942 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-13 23:26:20,945 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-13 23:26:20,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-13 23:26:20,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-13 23:26:20,954 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-13 23:26:20,956 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:26:20" (1/1) ... [2020-10-13 23:26:20,961 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ba1d067 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:20, skipping insertion in model container [2020-10-13 23:26:20,961 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 11:26:20" (1/1) ... [2020-10-13 23:26:20,974 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-13 23:26:21,001 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-13 23:26:21,247 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:26:21,254 INFO L203 MainTranslator]: Completed pre-run [2020-10-13 23:26:21,280 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-13 23:26:21,307 INFO L208 MainTranslator]: Completed translation [2020-10-13 23:26:21,308 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21 WrapperNode [2020-10-13 23:26:21,308 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-13 23:26:21,310 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-13 23:26:21,311 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-13 23:26:21,311 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-13 23:26:21,466 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21" (1/1) ... [2020-10-13 23:26:21,467 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21" (1/1) ... [2020-10-13 23:26:21,485 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21" (1/1) ... [2020-10-13 23:26:21,486 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21" (1/1) ... [2020-10-13 23:26:21,497 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21" (1/1) ... [2020-10-13 23:26:21,505 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21" (1/1) ... [2020-10-13 23:26:21,507 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21" (1/1) ... [2020-10-13 23:26:21,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-13 23:26:21,511 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-13 23:26:21,511 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-13 23:26:21,511 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-13 23:26:21,513 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21" (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 23:26:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-13 23:26:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-13 23:26:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-13 23:26:21,603 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-13 23:26:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-13 23:26:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-13 23:26:21,604 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-13 23:26:21,605 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-13 23:26:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-13 23:26:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-13 23:26:21,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-13 23:26:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-13 23:26:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-13 23:26:21,607 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-13 23:26:21,966 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-13 23:26:21,967 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-13 23:26:21,977 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:26:21 BoogieIcfgContainer [2020-10-13 23:26:21,977 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-13 23:26:21,980 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-13 23:26:21,980 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-13 23:26:21,986 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-13 23:26:21,986 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 11:26:20" (1/3) ... [2020-10-13 23:26:21,988 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ced793b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:26:21, skipping insertion in model container [2020-10-13 23:26:21,988 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 11:26:21" (2/3) ... [2020-10-13 23:26:21,989 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ced793b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 11:26:21, skipping insertion in model container [2020-10-13 23:26:21,989 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 11:26:21" (3/3) ... [2020-10-13 23:26:21,992 INFO L109 eAbstractionObserver]: Analyzing ICFG sanfoundry_27_ground.i [2020-10-13 23:26:22,017 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-13 23:26:22,035 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-13 23:26:22,060 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-13 23:26:22,103 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-13 23:26:22,104 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-13 23:26:22,104 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-13 23:26:22,105 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-13 23:26:22,105 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-13 23:26:22,106 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-13 23:26:22,106 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-13 23:26:22,106 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-13 23:26:22,141 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states. [2020-10-13 23:26:22,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:26:22,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:22,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:22,153 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:22,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:22,160 INFO L82 PathProgramCache]: Analyzing trace with hash -1998025284, now seen corresponding path program 1 times [2020-10-13 23:26:22,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:22,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228872506] [2020-10-13 23:26:22,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:22,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:22,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:22,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:22,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:22,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:26:22,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:22,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-13 23:26:22,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:22,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:22,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-13 23:26:22,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:22,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 23:26:22,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:22,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:22,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:22,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:22,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-13 23:26:22,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:22,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:22,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:22,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:22,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-13 23:26:23,016 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-13 23:26:23,017 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228872506] [2020-10-13 23:26:23,026 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:26:23,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-13 23:26:23,030 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17870583] [2020-10-13 23:26:23,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-13 23:26:23,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:23,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-13 23:26:23,058 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-13 23:26:23,062 INFO L87 Difference]: Start difference. First operand 28 states. Second operand 3 states. [2020-10-13 23:26:23,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:23,225 INFO L93 Difference]: Finished difference Result 48 states and 61 transitions. [2020-10-13 23:26:23,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-13 23:26:23,228 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-10-13 23:26:23,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:23,238 INFO L225 Difference]: With dead ends: 48 [2020-10-13 23:26:23,239 INFO L226 Difference]: Without dead ends: 23 [2020-10-13 23:26:23,243 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 23:26:23,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-13 23:26:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-13 23:26:23,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-13 23:26:23,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-10-13 23:26:23,296 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 15 [2020-10-13 23:26:23,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:23,297 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-10-13 23:26:23,297 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-13 23:26:23,298 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-10-13 23:26:23,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-13 23:26:23,299 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:23,300 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:23,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-13 23:26:23,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:23,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:23,302 INFO L82 PathProgramCache]: Analyzing trace with hash -915838997, now seen corresponding path program 1 times [2020-10-13 23:26:23,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:23,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [392734920] [2020-10-13 23:26:23,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:23,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:23,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:23,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:23,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:23,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:23,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-13 23:26:23,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:23,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-13 23:26:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:23,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:26:23,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-13 23:26:23,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:26:23,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-13 23:26:23,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:23,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:23,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:23,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:23,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:23,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-13 23:26:23,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:23,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:23,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:23,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:23,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-13 23:26:23,805 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 23:26:23,806 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [392734920] [2020-10-13 23:26:23,807 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:26:23,807 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:26:23,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86977802] [2020-10-13 23:26:23,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:26:23,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:23,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:26:23,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:26:23,827 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 4 states. [2020-10-13 23:26:23,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:23,963 INFO L93 Difference]: Finished difference Result 40 states and 46 transitions. [2020-10-13 23:26:23,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:26:23,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-13 23:26:23,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:23,966 INFO L225 Difference]: With dead ends: 40 [2020-10-13 23:26:23,966 INFO L226 Difference]: Without dead ends: 25 [2020-10-13 23:26:23,970 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 23:26:23,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-13 23:26:23,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 24. [2020-10-13 23:26:23,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-13 23:26:23,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-13 23:26:23,992 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 15 [2020-10-13 23:26:23,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:23,992 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-13 23:26:23,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:26:23,993 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-13 23:26:23,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-13 23:26:23,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:23,995 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:23,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-13 23:26:23,996 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:23,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:23,996 INFO L82 PathProgramCache]: Analyzing trace with hash 203688137, now seen corresponding path program 1 times [2020-10-13 23:26:23,997 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:23,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262098197] [2020-10-13 23:26:23,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:24,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:24,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:24,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:24,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:24,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-13 23:26:24,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:24,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-10-13 23:26:24,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:24,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:26:24,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:26:24,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-13 23:26:24,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:24,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:24,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:24,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:24,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:24,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:24,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:26:24,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:24,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:24,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:24,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:24,507 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-13 23:26:24,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262098197] [2020-10-13 23:26:24,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:26:24,508 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-13 23:26:24,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109969587] [2020-10-13 23:26:24,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-13 23:26:24,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:24,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-13 23:26:24,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-13 23:26:24,510 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 4 states. [2020-10-13 23:26:24,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:24,609 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-13 23:26:24,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-13 23:26:24,610 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-13 23:26:24,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:24,612 INFO L225 Difference]: With dead ends: 39 [2020-10-13 23:26:24,612 INFO L226 Difference]: Without dead ends: 28 [2020-10-13 23:26:24,613 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 23:26:24,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-13 23:26:24,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 25. [2020-10-13 23:26:24,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-13 23:26:24,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-10-13 23:26:24,620 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 17 [2020-10-13 23:26:24,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:24,620 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-10-13 23:26:24,621 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-13 23:26:24,621 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-10-13 23:26:24,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-13 23:26:24,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:24,622 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:24,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-13 23:26:24,623 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:24,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:24,623 INFO L82 PathProgramCache]: Analyzing trace with hash -990062782, now seen corresponding path program 1 times [2020-10-13 23:26:24,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:24,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1371793270] [2020-10-13 23:26:24,624 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:24,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:24,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:24,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:24,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:24,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-13 23:26:24,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:24,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-10-13 23:26:24,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:24,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:24,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-13 23:26:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-13 23:26:24,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-13 23:26:24,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:25,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:25,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:25,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:25,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:25,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:25,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:25,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:26:25,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:25,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:25,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:25,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:25,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:25,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:25,021 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 23:26:25,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1371793270] [2020-10-13 23:26:25,022 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:25,022 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-13 23:26:25,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176987548] [2020-10-13 23:26:25,023 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-13 23:26:25,023 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:25,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-13 23:26:25,024 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-13 23:26:25,024 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 5 states. [2020-10-13 23:26:25,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:25,137 INFO L93 Difference]: Finished difference Result 49 states and 58 transitions. [2020-10-13 23:26:25,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-13 23:26:25,138 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2020-10-13 23:26:25,139 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:25,139 INFO L225 Difference]: With dead ends: 49 [2020-10-13 23:26:25,140 INFO L226 Difference]: Without dead ends: 33 [2020-10-13 23:26:25,141 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 23:26:25,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-13 23:26:25,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 30. [2020-10-13 23:26:25,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-13 23:26:25,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-13 23:26:25,149 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 20 [2020-10-13 23:26:25,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:25,149 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-13 23:26:25,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-13 23:26:25,150 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-13 23:26:25,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-13 23:26:25,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:25,151 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:25,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-13 23:26:25,152 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:25,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:25,153 INFO L82 PathProgramCache]: Analyzing trace with hash -596431609, now seen corresponding path program 2 times [2020-10-13 23:26:25,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:25,154 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328171489] [2020-10-13 23:26:25,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:25,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:25,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:25,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:26,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:26,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-13 23:26:26,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:26,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 845 [2020-10-13 23:26:26,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:26,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-13 23:26:26,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-13 23:26:26,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-13 23:26:26,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:26,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:26,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:26,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:26,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:26,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-13 23:26:26,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:26,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:26,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:26,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:26,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:26,089 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-13 23:26:26,090 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328171489] [2020-10-13 23:26:26,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:26,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-13 23:26:26,091 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081853933] [2020-10-13 23:26:26,092 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-13 23:26:26,093 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:26,093 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-13 23:26:26,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-13 23:26:26,094 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-10-13 23:26:26,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:26,236 INFO L93 Difference]: Finished difference Result 57 states and 68 transitions. [2020-10-13 23:26:26,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-13 23:26:26,238 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-13 23:26:26,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:26,239 INFO L225 Difference]: With dead ends: 57 [2020-10-13 23:26:26,239 INFO L226 Difference]: Without dead ends: 38 [2020-10-13 23:26:26,240 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 23:26:26,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-13 23:26:26,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-13 23:26:26,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-13 23:26:26,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2020-10-13 23:26:26,249 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 25 [2020-10-13 23:26:26,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:26,250 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2020-10-13 23:26:26,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-13 23:26:26,251 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2020-10-13 23:26:26,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 23:26:26,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:26,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:26,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-13 23:26:26,253 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:26,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:26,253 INFO L82 PathProgramCache]: Analyzing trace with hash -425354714, now seen corresponding path program 3 times [2020-10-13 23:26:26,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:26,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787100777] [2020-10-13 23:26:26,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:26,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:26,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:26,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:26,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:27,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:27,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:26:27,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1637 [2020-10-13 23:26:27,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:27,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:26:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:26:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-13 23:26:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:28,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:28,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:28,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:28,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:28,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:28,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:26:28,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:28,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-13 23:26:28,024 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787100777] [2020-10-13 23:26:28,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-13 23:26:28,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-13 23:26:28,025 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614464983] [2020-10-13 23:26:28,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:26:28,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:28,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:26:28,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:26:28,027 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 8 states. [2020-10-13 23:26:28,233 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:28,233 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-10-13 23:26:28,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:26:28,234 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 30 [2020-10-13 23:26:28,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:28,239 INFO L225 Difference]: With dead ends: 58 [2020-10-13 23:26:28,239 INFO L226 Difference]: Without dead ends: 56 [2020-10-13 23:26:28,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:26:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-13 23:26:28,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-10-13 23:26:28,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-13 23:26:28,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-13 23:26:28,257 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 30 [2020-10-13 23:26:28,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:28,257 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-13 23:26:28,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:26:28,258 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-13 23:26:28,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-13 23:26:28,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:28,259 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:28,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-13 23:26:28,260 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:28,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1105413084, now seen corresponding path program 1 times [2020-10-13 23:26:28,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:28,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097941979] [2020-10-13 23:26:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:28,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:28,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:28,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:28,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:30,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:30,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-13 23:26:30,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:30,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2177 [2020-10-13 23:26:30,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:30,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-13 23:26:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-13 23:26:30,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-13 23:26:30,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:30,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:30,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:30,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:30,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:30,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:30,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:30,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-13 23:26:30,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:30,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:30,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:30,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:30,533 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-13 23:26:30,534 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097941979] [2020-10-13 23:26:30,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:30,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-13 23:26:30,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057271349] [2020-10-13 23:26:30,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-13 23:26:30,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:30,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-13 23:26:30,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-13 23:26:30,539 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 7 states. [2020-10-13 23:26:30,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:30,702 INFO L93 Difference]: Finished difference Result 100 states and 122 transitions. [2020-10-13 23:26:30,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-13 23:26:30,703 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-10-13 23:26:30,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:30,707 INFO L225 Difference]: With dead ends: 100 [2020-10-13 23:26:30,707 INFO L226 Difference]: Without dead ends: 63 [2020-10-13 23:26:30,708 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 23:26:30,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-10-13 23:26:30,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 58. [2020-10-13 23:26:30,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-13 23:26:30,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 68 transitions. [2020-10-13 23:26:30,719 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 68 transitions. Word has length 30 [2020-10-13 23:26:30,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:30,720 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 68 transitions. [2020-10-13 23:26:30,720 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-13 23:26:30,720 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 68 transitions. [2020-10-13 23:26:30,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 23:26:30,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:30,722 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:30,722 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-13 23:26:30,722 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:30,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:30,723 INFO L82 PathProgramCache]: Analyzing trace with hash 125465633, now seen corresponding path program 2 times [2020-10-13 23:26:30,723 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:30,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [857396157] [2020-10-13 23:26:30,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:30,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:30,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:31,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:33,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:33,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 23:26:33,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:33,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2910 [2020-10-13 23:26:33,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:33,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:26:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:26:33,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-13 23:26:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:26:33,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:33,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:33,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:33,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:33,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:33,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:33,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:26:33,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:33,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:33,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:33,802 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 3 proven. 7 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-13 23:26:33,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [857396157] [2020-10-13 23:26:33,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:33,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:26:33,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864095331] [2020-10-13 23:26:33,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:26:33,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:33,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:26:33,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:26:33,805 INFO L87 Difference]: Start difference. First operand 58 states and 68 transitions. Second operand 10 states. [2020-10-13 23:26:34,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:34,030 INFO L93 Difference]: Finished difference Result 85 states and 100 transitions. [2020-10-13 23:26:34,031 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:26:34,031 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2020-10-13 23:26:34,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:34,032 INFO L225 Difference]: With dead ends: 85 [2020-10-13 23:26:34,032 INFO L226 Difference]: Without dead ends: 83 [2020-10-13 23:26:34,033 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:26:34,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2020-10-13 23:26:34,046 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 66. [2020-10-13 23:26:34,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-13 23:26:34,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 79 transitions. [2020-10-13 23:26:34,050 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 79 transitions. Word has length 35 [2020-10-13 23:26:34,050 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:34,050 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 79 transitions. [2020-10-13 23:26:34,050 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:26:34,051 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 79 transitions. [2020-10-13 23:26:34,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-13 23:26:34,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:34,054 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:34,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-13 23:26:34,055 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:34,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:34,056 INFO L82 PathProgramCache]: Analyzing trace with hash -132699805, now seen corresponding path program 3 times [2020-10-13 23:26:34,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:34,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [62047041] [2020-10-13 23:26:34,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:34,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:34,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:34,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:37,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:37,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-13 23:26:37,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:37,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3357 [2020-10-13 23:26:37,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:37,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:37,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-13 23:26:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-13 23:26:37,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-13 23:26:37,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-13 23:26:37,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:37,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:37,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:37,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:37,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:37,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:37,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:26:37,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:37,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:37,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:37,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:37,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:37,542 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-13 23:26:37,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [62047041] [2020-10-13 23:26:37,548 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:37,548 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-13 23:26:37,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027472421] [2020-10-13 23:26:37,549 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-13 23:26:37,549 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:37,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-13 23:26:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-13 23:26:37,550 INFO L87 Difference]: Start difference. First operand 66 states and 79 transitions. Second operand 8 states. [2020-10-13 23:26:37,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:37,701 INFO L93 Difference]: Finished difference Result 135 states and 170 transitions. [2020-10-13 23:26:37,702 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-13 23:26:37,702 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-10-13 23:26:37,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:37,704 INFO L225 Difference]: With dead ends: 135 [2020-10-13 23:26:37,705 INFO L226 Difference]: Without dead ends: 84 [2020-10-13 23:26:37,707 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 23:26:37,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-13 23:26:37,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 77. [2020-10-13 23:26:37,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-13 23:26:37,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 93 transitions. [2020-10-13 23:26:37,731 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 93 transitions. Word has length 35 [2020-10-13 23:26:37,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:37,731 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 93 transitions. [2020-10-13 23:26:37,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-13 23:26:37,732 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 93 transitions. [2020-10-13 23:26:37,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-13 23:26:37,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:37,737 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:37,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-13 23:26:37,741 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:37,741 INFO L82 PathProgramCache]: Analyzing trace with hash -657132470, now seen corresponding path program 4 times [2020-10-13 23:26:37,742 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:37,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1044022909] [2020-10-13 23:26:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:37,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:37,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:37,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:38,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:42,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:42,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-13 23:26:42,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:42,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4287 [2020-10-13 23:26:42,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:42,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-13 23:26:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-13 23:26:42,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-13 23:26:42,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:42,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:42,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:42,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:42,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:42,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:42,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:26:42,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:42,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:42,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:42,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:42,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:42,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:42,145 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-13 23:26:42,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1044022909] [2020-10-13 23:26:42,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:42,146 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-13 23:26:42,147 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687144331] [2020-10-13 23:26:42,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-13 23:26:42,148 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:42,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-13 23:26:42,149 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-13 23:26:42,149 INFO L87 Difference]: Start difference. First operand 77 states and 93 transitions. Second operand 9 states. [2020-10-13 23:26:42,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:42,283 INFO L93 Difference]: Finished difference Result 155 states and 196 transitions. [2020-10-13 23:26:42,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-13 23:26:42,284 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-10-13 23:26:42,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:42,285 INFO L225 Difference]: With dead ends: 155 [2020-10-13 23:26:42,285 INFO L226 Difference]: Without dead ends: 95 [2020-10-13 23:26:42,286 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 23:26:42,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-13 23:26:42,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 88. [2020-10-13 23:26:42,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-13 23:26:42,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 107 transitions. [2020-10-13 23:26:42,301 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 107 transitions. Word has length 40 [2020-10-13 23:26:42,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:42,302 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 107 transitions. [2020-10-13 23:26:42,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-13 23:26:42,302 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 107 transitions. [2020-10-13 23:26:42,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-13 23:26:42,306 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:42,306 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:42,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-13 23:26:42,306 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:42,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:42,307 INFO L82 PathProgramCache]: Analyzing trace with hash 2052812415, now seen corresponding path program 5 times [2020-10-13 23:26:42,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:42,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1545318493] [2020-10-13 23:26:42,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:42,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:42,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:42,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:43,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:47,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-10-13 23:26:47,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:26:47,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:47,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:26:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:26:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-13 23:26:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:47,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:47,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:47,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:47,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:47,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:47,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:47,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:47,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:47,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:47,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:47,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:47,495 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 23 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-13 23:26:47,495 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1545318493] [2020-10-13 23:26:47,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:47,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:26:47,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277744640] [2020-10-13 23:26:47,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:26:47,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:47,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:26:47,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:26:47,498 INFO L87 Difference]: Start difference. First operand 88 states and 107 transitions. Second operand 12 states. [2020-10-13 23:26:47,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:47,789 INFO L93 Difference]: Finished difference Result 109 states and 131 transitions. [2020-10-13 23:26:47,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:26:47,790 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-13 23:26:47,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:47,791 INFO L225 Difference]: With dead ends: 109 [2020-10-13 23:26:47,792 INFO L226 Difference]: Without dead ends: 107 [2020-10-13 23:26:47,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:26:47,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-13 23:26:47,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 56. [2020-10-13 23:26:47,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-13 23:26:47,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 64 transitions. [2020-10-13 23:26:47,810 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 64 transitions. Word has length 45 [2020-10-13 23:26:47,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:47,811 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 64 transitions. [2020-10-13 23:26:47,811 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:26:47,811 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 64 transitions. [2020-10-13 23:26:47,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:26:47,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:47,814 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:47,815 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-13 23:26:47,815 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:47,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:47,816 INFO L82 PathProgramCache]: Analyzing trace with hash 2061020150, now seen corresponding path program 1 times [2020-10-13 23:26:47,816 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:47,816 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1180941894] [2020-10-13 23:26:47,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:47,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:47,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:48,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:52,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:52,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 23:26:52,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:26:52,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:26:52,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:52,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:26:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:26:52,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 23:26:52,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:52,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:52,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:53,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:53,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:53,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:53,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:53,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:53,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:53,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:53,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:53,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:53,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:26:53,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:53,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:53,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:53,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:26:53,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:26:53,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:53,011 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:26:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:53,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:26:53,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:53,022 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-13 23:26:53,022 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1180941894] [2020-10-13 23:26:53,023 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:53,023 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:26:53,023 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903504068] [2020-10-13 23:26:53,024 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:26:53,024 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:53,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:26:53,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:26:53,025 INFO L87 Difference]: Start difference. First operand 56 states and 64 transitions. Second operand 11 states. [2020-10-13 23:26:53,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:53,326 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-10-13 23:26:53,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:26:53,327 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-10-13 23:26:53,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:53,328 INFO L225 Difference]: With dead ends: 89 [2020-10-13 23:26:53,329 INFO L226 Difference]: Without dead ends: 87 [2020-10-13 23:26:53,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=255, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:26:53,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-13 23:26:53,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2020-10-13 23:26:53,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-13 23:26:53,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 95 transitions. [2020-10-13 23:26:53,350 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 95 transitions. Word has length 53 [2020-10-13 23:26:53,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:53,350 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 95 transitions. [2020-10-13 23:26:53,351 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:26:53,351 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 95 transitions. [2020-10-13 23:26:53,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-13 23:26:53,354 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:53,354 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:53,355 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-13 23:26:53,355 INFO L427 AbstractCegarLoop]: === Iteration 13 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:53,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:53,355 INFO L82 PathProgramCache]: Analyzing trace with hash -645599244, now seen corresponding path program 1 times [2020-10-13 23:26:53,356 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:53,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213367338] [2020-10-13 23:26:53,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:53,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:53,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:53,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:54,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:58,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:58,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-13 23:26:58,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:26:58,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:26:58,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:58,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:26:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:26:58,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-13 23:26:58,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:26:58,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:26:58,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:58,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:58,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:58,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:26:58,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:58,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:26:58,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:58,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:26:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:58,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:26:58,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:26:58,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:26:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:58,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:58,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:26:58,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:26:58,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:26:58,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:26:58,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:26:58,541 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:26:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:26:58,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:26:58,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:26:58,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:26:58,556 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 16 proven. 13 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-13 23:26:58,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213367338] [2020-10-13 23:26:58,557 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:26:58,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:26:58,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316347977] [2020-10-13 23:26:58,558 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:26:58,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:26:58,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:26:58,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:26:58,559 INFO L87 Difference]: Start difference. First operand 81 states and 95 transitions. Second operand 13 states. [2020-10-13 23:26:58,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:26:58,959 INFO L93 Difference]: Finished difference Result 97 states and 112 transitions. [2020-10-13 23:26:58,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:26:58,960 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-13 23:26:58,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:26:58,961 INFO L225 Difference]: With dead ends: 97 [2020-10-13 23:26:58,961 INFO L226 Difference]: Without dead ends: 95 [2020-10-13 23:26:58,964 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:26:58,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-13 23:26:58,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 64. [2020-10-13 23:26:58,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-13 23:26:58,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 72 transitions. [2020-10-13 23:26:58,974 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 72 transitions. Word has length 53 [2020-10-13 23:26:58,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:26:58,975 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 72 transitions. [2020-10-13 23:26:58,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:26:58,975 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 72 transitions. [2020-10-13 23:26:58,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 23:26:58,976 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:26:58,976 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:26:58,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-13 23:26:58,976 INFO L427 AbstractCegarLoop]: === Iteration 14 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:26:58,977 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:26:58,977 INFO L82 PathProgramCache]: Analyzing trace with hash 2013338029, now seen corresponding path program 2 times [2020-10-13 23:26:58,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:26:58,978 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919923348] [2020-10-13 23:26:58,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:26:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:26:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:59,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:26:59,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:02,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:02,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 23:27:02,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3691 [2020-10-13 23:27:02,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:02,680 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:27:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:27:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 23:27:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:02,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:02,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:02,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:02,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:02,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:02,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:02,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:02,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:27:02,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:02,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:02,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:02,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:02,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:02,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:02,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:02,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:02,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:02,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:02,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:27:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:02,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:02,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:02,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:02,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:02,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:02,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:02,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:02,861 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 4 proven. 33 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2020-10-13 23:27:02,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919923348] [2020-10-13 23:27:02,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:02,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:27:02,862 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590841619] [2020-10-13 23:27:02,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:27:02,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:02,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:27:02,863 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:27:02,863 INFO L87 Difference]: Start difference. First operand 64 states and 72 transitions. Second operand 13 states. [2020-10-13 23:27:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:03,289 INFO L93 Difference]: Finished difference Result 98 states and 113 transitions. [2020-10-13 23:27:03,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:27:03,290 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 61 [2020-10-13 23:27:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:03,292 INFO L225 Difference]: With dead ends: 98 [2020-10-13 23:27:03,292 INFO L226 Difference]: Without dead ends: 96 [2020-10-13 23:27:03,293 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:27:03,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-13 23:27:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 90. [2020-10-13 23:27:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-10-13 23:27:03,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 104 transitions. [2020-10-13 23:27:03,313 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 104 transitions. Word has length 61 [2020-10-13 23:27:03,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:03,313 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 104 transitions. [2020-10-13 23:27:03,313 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:27:03,314 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 104 transitions. [2020-10-13 23:27:03,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-13 23:27:03,317 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:03,317 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:03,318 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-13 23:27:03,318 INFO L427 AbstractCegarLoop]: === Iteration 15 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:03,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:03,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1872789419, now seen corresponding path program 2 times [2020-10-13 23:27:03,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:03,319 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [115119756] [2020-10-13 23:27:03,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:03,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:03,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:03,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:03,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:08,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:08,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-13 23:27:08,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:27:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:27:08,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:08,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-13 23:27:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-10-13 23:27:08,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-13 23:27:08,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:08,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:08,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:08,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:08,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:08,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:08,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:08,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:08,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:08,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:08,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:08,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-13 23:27:08,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:08,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:08,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:08,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:08,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:08,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:08,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:08,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:08,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:08,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:08,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-13 23:27:08,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:08,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:08,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:08,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:08,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:08,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:08,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:08,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:08,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:08,411 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-10-13 23:27:08,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [115119756] [2020-10-13 23:27:08,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:08,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-13 23:27:08,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168210963] [2020-10-13 23:27:08,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-13 23:27:08,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:08,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-13 23:27:08,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-13 23:27:08,413 INFO L87 Difference]: Start difference. First operand 90 states and 104 transitions. Second operand 10 states. [2020-10-13 23:27:08,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:08,574 INFO L93 Difference]: Finished difference Result 174 states and 208 transitions. [2020-10-13 23:27:08,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-13 23:27:08,574 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 61 [2020-10-13 23:27:08,574 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:08,576 INFO L225 Difference]: With dead ends: 174 [2020-10-13 23:27:08,576 INFO L226 Difference]: Without dead ends: 103 [2020-10-13 23:27:08,577 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 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 23:27:08,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-10-13 23:27:08,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 98. [2020-10-13 23:27:08,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-13 23:27:08,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 114 transitions. [2020-10-13 23:27:08,587 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 114 transitions. Word has length 61 [2020-10-13 23:27:08,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:08,587 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 114 transitions. [2020-10-13 23:27:08,587 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-13 23:27:08,587 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 114 transitions. [2020-10-13 23:27:08,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-13 23:27:08,588 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:08,588 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:08,588 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-13 23:27:08,588 INFO L427 AbstractCegarLoop]: === Iteration 16 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:08,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:08,589 INFO L82 PathProgramCache]: Analyzing trace with hash -1647752614, now seen corresponding path program 3 times [2020-10-13 23:27:08,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:08,589 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084140164] [2020-10-13 23:27:08,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:08,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:08,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:09,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:09,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:13,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:13,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-13 23:27:13,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:27:13,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:27:13,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:13,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:13,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-13 23:27:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-10-13 23:27:13,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-13 23:27:13,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:13,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:13,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:13,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:13,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:13,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:13,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:13,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:13,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:13,681 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:13,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:13,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-13 23:27:13,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:13,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:13,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:13,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:13,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:13,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:13,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:13,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:13,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:13,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-13 23:27:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:13,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:13,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:13,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:13,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:13,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:13,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:13,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:13,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:13,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:13,695 INFO L134 CoverageAnalysis]: Checked inductivity of 135 backedges. 4 proven. 70 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-13 23:27:13,695 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084140164] [2020-10-13 23:27:13,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:13,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-13 23:27:13,696 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313342066] [2020-10-13 23:27:13,696 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-13 23:27:13,696 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:13,696 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-13 23:27:13,697 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-13 23:27:13,697 INFO L87 Difference]: Start difference. First operand 98 states and 114 transitions. Second operand 11 states. [2020-10-13 23:27:13,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:13,852 INFO L93 Difference]: Finished difference Result 188 states and 226 transitions. [2020-10-13 23:27:13,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-13 23:27:13,852 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 66 [2020-10-13 23:27:13,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:13,854 INFO L225 Difference]: With dead ends: 188 [2020-10-13 23:27:13,854 INFO L226 Difference]: Without dead ends: 111 [2020-10-13 23:27:13,855 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 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 23:27:13,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-13 23:27:13,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 106. [2020-10-13 23:27:13,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-13 23:27:13,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 124 transitions. [2020-10-13 23:27:13,864 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 124 transitions. Word has length 66 [2020-10-13 23:27:13,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:13,864 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 124 transitions. [2020-10-13 23:27:13,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-13 23:27:13,865 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 124 transitions. [2020-10-13 23:27:13,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-13 23:27:13,865 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:13,865 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:13,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-13 23:27:13,866 INFO L427 AbstractCegarLoop]: === Iteration 17 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:13,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:13,866 INFO L82 PathProgramCache]: Analyzing trace with hash 821095623, now seen corresponding path program 4 times [2020-10-13 23:27:13,866 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:13,866 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [618739051] [2020-10-13 23:27:13,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:13,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:13,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:14,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:18,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:18,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-10-13 23:27:18,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:27:18,877 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-13 23:27:18,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:18,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:27:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:27:18,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 23:27:18,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:19,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:19,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:19,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:19,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:19,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:19,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:19,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:19,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:19,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:19,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:19,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:19,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:19,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:27:19,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:19,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:19,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:19,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:19,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:19,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:19,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:19,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:19,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:19,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:27:19,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:19,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:19,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:19,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:19,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:19,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:27:19,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:19,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:19,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:19,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:27:19,108 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 21 proven. 43 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2020-10-13 23:27:19,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [618739051] [2020-10-13 23:27:19,109 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:19,110 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:27:19,110 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881657353] [2020-10-13 23:27:19,111 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:27:19,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:19,112 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:27:19,112 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:27:19,113 INFO L87 Difference]: Start difference. First operand 106 states and 124 transitions. Second operand 15 states. [2020-10-13 23:27:19,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:19,626 INFO L93 Difference]: Finished difference Result 122 states and 141 transitions. [2020-10-13 23:27:19,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:27:19,627 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 71 [2020-10-13 23:27:19,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:19,629 INFO L225 Difference]: With dead ends: 122 [2020-10-13 23:27:19,629 INFO L226 Difference]: Without dead ends: 120 [2020-10-13 23:27:19,630 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:27:19,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2020-10-13 23:27:19,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 82. [2020-10-13 23:27:19,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-13 23:27:19,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 92 transitions. [2020-10-13 23:27:19,639 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 92 transitions. Word has length 71 [2020-10-13 23:27:19,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:19,639 INFO L479 AbstractCegarLoop]: Abstraction has 82 states and 92 transitions. [2020-10-13 23:27:19,639 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:27:19,639 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 92 transitions. [2020-10-13 23:27:19,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 23:27:19,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:19,640 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:19,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-13 23:27:19,641 INFO L427 AbstractCegarLoop]: === Iteration 18 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:19,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:19,641 INFO L82 PathProgramCache]: Analyzing trace with hash -1184403072, now seen corresponding path program 3 times [2020-10-13 23:27:19,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:19,641 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714264736] [2020-10-13 23:27:19,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:19,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:19,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:20,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:24,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:24,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 23:27:24,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:24,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:27:24,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:24,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:27:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:27:24,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-13 23:27:24,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:24,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:24,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:24,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:24,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:24,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:24,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:24,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:24,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:24,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:24,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:24,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:24,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:27:24,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:24,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:24,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:24,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:24,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:24,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:24,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:24,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:24,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:24,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:24,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:27:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:24,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:24,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:24,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:24,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:24,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:27:24,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:24,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:24,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:24,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:24,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:27:24,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:24,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:24,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:24,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:24,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:24,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:24,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:24,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:24,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:24,897 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 70 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2020-10-13 23:27:24,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714264736] [2020-10-13 23:27:24,898 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:24,898 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:27:24,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1785525040] [2020-10-13 23:27:24,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:27:24,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:24,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:27:24,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:27:24,903 INFO L87 Difference]: Start difference. First operand 82 states and 92 transitions. Second operand 15 states. [2020-10-13 23:27:25,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:25,474 INFO L93 Difference]: Finished difference Result 123 states and 142 transitions. [2020-10-13 23:27:25,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:27:25,475 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 79 [2020-10-13 23:27:25,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:25,477 INFO L225 Difference]: With dead ends: 123 [2020-10-13 23:27:25,477 INFO L226 Difference]: Without dead ends: 121 [2020-10-13 23:27:25,478 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:27:25,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-13 23:27:25,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 115. [2020-10-13 23:27:25,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 115 states. [2020-10-13 23:27:25,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 133 transitions. [2020-10-13 23:27:25,490 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 133 transitions. Word has length 79 [2020-10-13 23:27:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:25,491 INFO L479 AbstractCegarLoop]: Abstraction has 115 states and 133 transitions. [2020-10-13 23:27:25,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:27:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 133 transitions. [2020-10-13 23:27:25,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-13 23:27:25,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:25,492 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:25,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-13 23:27:25,492 INFO L427 AbstractCegarLoop]: === Iteration 19 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:25,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:25,493 INFO L82 PathProgramCache]: Analyzing trace with hash -1112016514, now seen corresponding path program 5 times [2020-10-13 23:27:25,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:25,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1871213333] [2020-10-13 23:27:25,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:25,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:25,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:26,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:30,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:30,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-10-13 23:27:30,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:27:30,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:27:30,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:30,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-13 23:27:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-13 23:27:30,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-13 23:27:30,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:30,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:30,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:30,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:30,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:30,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:30,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:30,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:30,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:30,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:30,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:30,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:30,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-13 23:27:30,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:30,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:30,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:30,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:30,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:30,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:30,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:30,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:30,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:30,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:30,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:30,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:30,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-13 23:27:30,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:30,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:30,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:30,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:30,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:30,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:30,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:30,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:30,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-13 23:27:30,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:30,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:30,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:30,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:30,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:30,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:30,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:30,623 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:30,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:30,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:30,628 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 6 proven. 92 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-13 23:27:30,629 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1871213333] [2020-10-13 23:27:30,629 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:30,629 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-13 23:27:30,629 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727172629] [2020-10-13 23:27:30,631 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-13 23:27:30,631 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:30,631 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-13 23:27:30,632 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-13 23:27:30,632 INFO L87 Difference]: Start difference. First operand 115 states and 133 transitions. Second operand 12 states. [2020-10-13 23:27:30,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:30,807 INFO L93 Difference]: Finished difference Result 220 states and 262 transitions. [2020-10-13 23:27:30,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-13 23:27:30,808 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 79 [2020-10-13 23:27:30,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:30,811 INFO L225 Difference]: With dead ends: 220 [2020-10-13 23:27:30,811 INFO L226 Difference]: Without dead ends: 128 [2020-10-13 23:27:30,812 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 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 23:27:30,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-10-13 23:27:30,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 123. [2020-10-13 23:27:30,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-13 23:27:30,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 143 transitions. [2020-10-13 23:27:30,826 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 143 transitions. Word has length 79 [2020-10-13 23:27:30,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:30,826 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 143 transitions. [2020-10-13 23:27:30,826 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-13 23:27:30,826 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 143 transitions. [2020-10-13 23:27:30,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-13 23:27:30,827 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:30,827 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:30,828 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-13 23:27:30,828 INFO L427 AbstractCegarLoop]: === Iteration 20 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:30,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:30,828 INFO L82 PathProgramCache]: Analyzing trace with hash -1421513995, now seen corresponding path program 6 times [2020-10-13 23:27:30,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:30,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [602234653] [2020-10-13 23:27:30,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:30,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:30,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:30,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:32,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:32,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:35,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:35,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-13 23:27:35,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:27:35,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-13 23:27:35,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:35,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:27:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:27:35,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-13 23:27:35,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:36,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:36,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:36,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:36,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:36,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:36,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:36,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:36,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:36,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:36,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:36,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:36,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:36,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:27:36,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:36,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:36,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:36,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:36,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:36,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:36,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:36,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:36,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:36,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:36,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:27:36,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:36,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:36,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:36,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:36,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:36,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:36,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:36,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:36,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:36,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:36,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 23:27:36,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:36,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:36,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:36,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:36,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:36,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:36,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:36,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:36,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:36,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:36,080 INFO L134 CoverageAnalysis]: Checked inductivity of 234 backedges. 23 proven. 78 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2020-10-13 23:27:36,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [602234653] [2020-10-13 23:27:36,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:36,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:27:36,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131993517] [2020-10-13 23:27:36,081 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:27:36,081 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:36,081 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:27:36,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:27:36,082 INFO L87 Difference]: Start difference. First operand 123 states and 143 transitions. Second operand 17 states. [2020-10-13 23:27:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:36,788 INFO L93 Difference]: Finished difference Result 139 states and 160 transitions. [2020-10-13 23:27:36,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:27:36,789 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 84 [2020-10-13 23:27:36,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:36,792 INFO L225 Difference]: With dead ends: 139 [2020-10-13 23:27:36,792 INFO L226 Difference]: Without dead ends: 137 [2020-10-13 23:27:36,793 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=619, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:27:36,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-10-13 23:27:36,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 95. [2020-10-13 23:27:36,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-13 23:27:36,803 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 106 transitions. [2020-10-13 23:27:36,804 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 106 transitions. Word has length 84 [2020-10-13 23:27:36,804 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:36,804 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 106 transitions. [2020-10-13 23:27:36,804 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:27:36,804 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 106 transitions. [2020-10-13 23:27:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 23:27:36,805 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:36,805 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:36,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-13 23:27:36,806 INFO L427 AbstractCegarLoop]: === Iteration 21 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:36,806 INFO L82 PathProgramCache]: Analyzing trace with hash 272285614, now seen corresponding path program 4 times [2020-10-13 23:27:36,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:36,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785566909] [2020-10-13 23:27:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:36,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:36,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:36,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:38,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:41,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:41,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:27:41,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:27:41,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:27:41,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:41,824 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:27:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:27:41,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-13 23:27:41,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:42,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:42,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:42,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:42,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:42,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:42,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:42,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:42,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:42,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:42,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:42,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:42,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:27:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:42,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:42,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:42,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:42,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:42,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:42,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:42,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:42,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:42,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:42,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:42,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:27:42,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:42,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:42,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:42,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:42,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:42,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:42,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:42,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:42,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:42,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:42,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:42,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:27:42,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 23:27:42,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:42,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:42,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:42,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:42,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:42,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:42,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:42,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:42,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:42,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:27:42,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 23:27:42,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:42,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:42,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:42,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:42,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:42,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:42,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:42,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:42,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:42,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:42,097 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 8 proven. 109 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2020-10-13 23:27:42,098 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785566909] [2020-10-13 23:27:42,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:42,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:27:42,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583186876] [2020-10-13 23:27:42,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:27:42,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:42,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:27:42,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:27:42,099 INFO L87 Difference]: Start difference. First operand 95 states and 106 transitions. Second operand 17 states. [2020-10-13 23:27:42,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:42,782 INFO L93 Difference]: Finished difference Result 140 states and 161 transitions. [2020-10-13 23:27:42,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:27:42,783 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 92 [2020-10-13 23:27:42,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:42,785 INFO L225 Difference]: With dead ends: 140 [2020-10-13 23:27:42,785 INFO L226 Difference]: Without dead ends: 138 [2020-10-13 23:27:42,786 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=80, Invalid=676, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:27:42,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2020-10-13 23:27:42,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 132. [2020-10-13 23:27:42,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-13 23:27:42,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 152 transitions. [2020-10-13 23:27:42,806 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 152 transitions. Word has length 92 [2020-10-13 23:27:42,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:42,807 INFO L479 AbstractCegarLoop]: Abstraction has 132 states and 152 transitions. [2020-10-13 23:27:42,807 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:27:42,807 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 152 transitions. [2020-10-13 23:27:42,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-13 23:27:42,811 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:42,812 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:42,812 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-13 23:27:42,812 INFO L427 AbstractCegarLoop]: === Iteration 22 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:42,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:42,812 INFO L82 PathProgramCache]: Analyzing trace with hash -151361108, now seen corresponding path program 7 times [2020-10-13 23:27:42,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:42,814 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1553320884] [2020-10-13 23:27:42,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:42,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:44,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:44,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:47,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:47,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-13 23:27:47,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:27:47,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:27:47,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:47,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:47,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-13 23:27:47,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-10-13 23:27:47,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-13 23:27:47,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:47,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:47,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:47,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:47,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:47,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:47,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:47,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:47,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:47,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:47,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:47,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:27:47,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-13 23:27:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:47,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:47,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:47,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:47,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:47,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:47,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:47,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:47,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:47,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:47,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:47,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-13 23:27:47,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:47,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:47,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:47,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:47,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:47,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:47,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:47,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:47,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:47,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:47,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-13 23:27:47,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:47,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:47,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:47,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:47,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:47,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:47,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:47,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:47,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:47,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-13 23:27:47,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:47,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:47,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:47,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:47,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:47,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:47,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:47,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:47,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:47,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:47,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:47,948 INFO L134 CoverageAnalysis]: Checked inductivity of 262 backedges. 8 proven. 117 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-13 23:27:47,948 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1553320884] [2020-10-13 23:27:47,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:47,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-13 23:27:47,948 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920360375] [2020-10-13 23:27:47,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-13 23:27:47,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:47,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-13 23:27:47,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-13 23:27:47,949 INFO L87 Difference]: Start difference. First operand 132 states and 152 transitions. Second operand 13 states. [2020-10-13 23:27:48,128 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:48,128 INFO L93 Difference]: Finished difference Result 252 states and 298 transitions. [2020-10-13 23:27:48,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-13 23:27:48,130 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 92 [2020-10-13 23:27:48,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:48,132 INFO L225 Difference]: With dead ends: 252 [2020-10-13 23:27:48,132 INFO L226 Difference]: Without dead ends: 145 [2020-10-13 23:27:48,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 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 23:27:48,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-13 23:27:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 140. [2020-10-13 23:27:48,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-13 23:27:48,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 162 transitions. [2020-10-13 23:27:48,158 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 162 transitions. Word has length 92 [2020-10-13 23:27:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:48,159 INFO L479 AbstractCegarLoop]: Abstraction has 140 states and 162 transitions. [2020-10-13 23:27:48,159 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-13 23:27:48,159 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 162 transitions. [2020-10-13 23:27:48,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2020-10-13 23:27:48,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:48,162 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:48,162 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-13 23:27:48,162 INFO L427 AbstractCegarLoop]: === Iteration 23 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:48,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:48,163 INFO L82 PathProgramCache]: Analyzing trace with hash -115821487, now seen corresponding path program 8 times [2020-10-13 23:27:48,163 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:48,163 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37139947] [2020-10-13 23:27:48,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:48,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:48,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:50,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-13 23:27:53,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:27:53,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:27:53,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-13 23:27:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-13 23:27:53,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-13 23:27:53,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:53,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:53,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:53,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:53,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:53,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:53,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-13 23:27:53,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:53,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:53,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:53,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-13 23:27:53,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:53,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:53,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:53,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:53,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:53,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-13 23:27:53,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:53,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:53,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:53,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:53,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:53,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-13 23:27:53,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:53,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:53,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:53,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:27:53,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:53,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:27:53,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:53,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:53,306 INFO L134 CoverageAnalysis]: Checked inductivity of 309 backedges. 8 proven. 145 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2020-10-13 23:27:53,306 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37139947] [2020-10-13 23:27:53,307 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:53,307 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-13 23:27:53,307 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1830113199] [2020-10-13 23:27:53,307 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-13 23:27:53,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:53,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-13 23:27:53,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:27:53,308 INFO L87 Difference]: Start difference. First operand 140 states and 162 transitions. Second operand 14 states. [2020-10-13 23:27:53,457 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:53,457 INFO L93 Difference]: Finished difference Result 266 states and 316 transitions. [2020-10-13 23:27:53,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-13 23:27:53,458 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 97 [2020-10-13 23:27:53,458 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:53,459 INFO L225 Difference]: With dead ends: 266 [2020-10-13 23:27:53,459 INFO L226 Difference]: Without dead ends: 153 [2020-10-13 23:27:53,460 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-13 23:27:53,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-13 23:27:53,471 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 148. [2020-10-13 23:27:53,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 148 states. [2020-10-13 23:27:53,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 172 transitions. [2020-10-13 23:27:53,473 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 172 transitions. Word has length 97 [2020-10-13 23:27:53,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:53,473 INFO L479 AbstractCegarLoop]: Abstraction has 148 states and 172 transitions. [2020-10-13 23:27:53,473 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-13 23:27:53,473 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 172 transitions. [2020-10-13 23:27:53,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-13 23:27:53,474 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:53,474 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:53,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-13 23:27:53,475 INFO L427 AbstractCegarLoop]: === Iteration 24 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:53,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:53,475 INFO L82 PathProgramCache]: Analyzing trace with hash -814277488, now seen corresponding path program 9 times [2020-10-13 23:27:53,475 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:53,476 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097618965] [2020-10-13 23:27:53,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:53,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:53,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:55,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:55,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:58,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:58,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-13 23:27:58,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:27:58,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:27:58,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:58,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:58,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:27:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:27:58,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-13 23:27:58,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:58,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:27:58,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:58,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:58,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:58,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:27:58,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:58,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:58,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:58,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:27:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:58,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:27:58,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:58,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:27:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:58,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:58,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:58,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:58,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:58,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:58,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:58,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:58,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:58,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:58,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:58,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 23:27:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:58,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:58,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:58,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:58,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:58,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:58,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:27:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:58,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:58,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:58,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:58,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:58,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:27:58,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:58,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:58,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:58,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:58,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 23:27:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:58,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:58,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:27:58,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:27:58,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:27:58,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:27:58,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:27:58,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:27:58,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:27:58,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:27:58,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:27:58,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:27:58,798 INFO L134 CoverageAnalysis]: Checked inductivity of 361 backedges. 28 proven. 131 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-13 23:27:58,799 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097618965] [2020-10-13 23:27:58,799 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:27:58,799 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:27:58,799 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1987417437] [2020-10-13 23:27:58,799 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:27:58,800 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:27:58,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:27:58,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:27:58,800 INFO L87 Difference]: Start difference. First operand 148 states and 172 transitions. Second operand 19 states. [2020-10-13 23:27:59,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:27:59,651 INFO L93 Difference]: Finished difference Result 164 states and 189 transitions. [2020-10-13 23:27:59,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:27:59,652 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 102 [2020-10-13 23:27:59,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:27:59,654 INFO L225 Difference]: With dead ends: 164 [2020-10-13 23:27:59,654 INFO L226 Difference]: Without dead ends: 162 [2020-10-13 23:27:59,655 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:27:59,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-10-13 23:27:59,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 113. [2020-10-13 23:27:59,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-13 23:27:59,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2020-10-13 23:27:59,665 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 102 [2020-10-13 23:27:59,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:27:59,666 INFO L479 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2020-10-13 23:27:59,666 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:27:59,666 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2020-10-13 23:27:59,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 23:27:59,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:27:59,667 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:27:59,667 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-13 23:27:59,668 INFO L427 AbstractCegarLoop]: === Iteration 25 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:27:59,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:27:59,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1869448265, now seen corresponding path program 5 times [2020-10-13 23:27:59,668 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:27:59,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [179334747] [2020-10-13 23:27:59,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:27:59,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:27:59,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:27:59,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 23:28:04,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:28:04,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:28:04,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:28:04,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:28:04,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-13 23:28:04,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:04,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:04,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:04,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:04,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:04,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:28:04,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:04,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:04,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:04,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:04,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 23:28:04,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:04,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:04,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:04,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:04,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:04,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:28:04,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:04,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:04,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:04,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 23:28:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:04,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:04,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:04,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:04,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:04,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 23:28:04,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:04,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:04,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:04,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:04,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:04,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:04,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:04,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:04,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:04,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:04,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:05,013 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 10 proven. 169 refuted. 0 times theorem prover too weak. 218 trivial. 0 not checked. [2020-10-13 23:28:05,014 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [179334747] [2020-10-13 23:28:05,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:05,014 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:28:05,014 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137532105] [2020-10-13 23:28:05,015 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:28:05,015 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:05,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:28:05,015 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:28:05,015 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand 19 states. [2020-10-13 23:28:05,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:05,885 INFO L93 Difference]: Finished difference Result 165 states and 190 transitions. [2020-10-13 23:28:05,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:28:05,886 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 110 [2020-10-13 23:28:05,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:05,888 INFO L225 Difference]: With dead ends: 165 [2020-10-13 23:28:05,889 INFO L226 Difference]: Without dead ends: 163 [2020-10-13 23:28:05,890 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=83, Invalid=787, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:28:05,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 163 states. [2020-10-13 23:28:05,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 163 to 157. [2020-10-13 23:28:05,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-13 23:28:05,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 181 transitions. [2020-10-13 23:28:05,904 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 181 transitions. Word has length 110 [2020-10-13 23:28:05,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:05,904 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 181 transitions. [2020-10-13 23:28:05,904 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:28:05,904 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 181 transitions. [2020-10-13 23:28:05,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-13 23:28:05,906 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:05,906 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 10, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:05,906 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-13 23:28:05,906 INFO L427 AbstractCegarLoop]: === Iteration 26 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:05,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:05,907 INFO L82 PathProgramCache]: Analyzing trace with hash 1884966983, now seen corresponding path program 10 times [2020-10-13 23:28:05,907 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:05,907 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254540595] [2020-10-13 23:28:05,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:05,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:05,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:08,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:10,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:10,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-13 23:28:10,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:28:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-13 23:28:10,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:10,919 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-13 23:28:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 35 [2020-10-13 23:28:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-13 23:28:10,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:11,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:11,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:11,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:11,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:11,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:11,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:11,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:11,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:11,032 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:11,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:11,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:11,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-13 23:28:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:11,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:11,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:11,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:11,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:11,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:11,036 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:11,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:11,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:11,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-13 23:28:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:11,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:11,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:11,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:11,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:11,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-13 23:28:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:11,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:11,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:11,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:11,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:11,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:11,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:11,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:11,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:11,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:11,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:11,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-13 23:28:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:11,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:11,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:11,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:11,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:11,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:11,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:11,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:11,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:11,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:11,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:11,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-13 23:28:11,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:11,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:11,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:11,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:11,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:11,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:11,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:11,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:11,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:11,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:11,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:11,054 INFO L134 CoverageAnalysis]: Checked inductivity of 397 backedges. 10 proven. 176 refuted. 0 times theorem prover too weak. 211 trivial. 0 not checked. [2020-10-13 23:28:11,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254540595] [2020-10-13 23:28:11,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:11,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-13 23:28:11,055 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [89912009] [2020-10-13 23:28:11,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-13 23:28:11,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:11,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-13 23:28:11,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:28:11,056 INFO L87 Difference]: Start difference. First operand 157 states and 181 transitions. Second operand 15 states. [2020-10-13 23:28:11,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:11,242 INFO L93 Difference]: Finished difference Result 298 states and 352 transitions. [2020-10-13 23:28:11,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-13 23:28:11,242 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 110 [2020-10-13 23:28:11,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:11,244 INFO L225 Difference]: With dead ends: 298 [2020-10-13 23:28:11,244 INFO L226 Difference]: Without dead ends: 170 [2020-10-13 23:28:11,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-13 23:28:11,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-13 23:28:11,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 165. [2020-10-13 23:28:11,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-13 23:28:11,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 191 transitions. [2020-10-13 23:28:11,259 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 191 transitions. Word has length 110 [2020-10-13 23:28:11,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:11,259 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 191 transitions. [2020-10-13 23:28:11,259 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-13 23:28:11,259 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 191 transitions. [2020-10-13 23:28:11,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-13 23:28:11,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:11,261 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:11,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-13 23:28:11,262 INFO L427 AbstractCegarLoop]: === Iteration 27 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:11,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:11,262 INFO L82 PathProgramCache]: Analyzing trace with hash 658206756, now seen corresponding path program 11 times [2020-10-13 23:28:11,262 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:11,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1963552866] [2020-10-13 23:28:11,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:14,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:14,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:16,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:16,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-10-13 23:28:16,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:28:16,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-13 23:28:16,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:16,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:28:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:28:16,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-13 23:28:16,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:16,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:16,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:16,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:16,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:16,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:16,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:16,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:16,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:16,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:16,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:16,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:28:16,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:16,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:16,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:16,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:16,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:16,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:16,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:16,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:16,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:16,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:16,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:28:16,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:16,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:16,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:16,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:16,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:16,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:16,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:16,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:16,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:16,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:28:16,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:16,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:16,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:16,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:16,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:16,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:16,600 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:16,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:16,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:28:16,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:16,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:16,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:16,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:16,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:16,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:16,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:16,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:16,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:16,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:28:16,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:16,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:16,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:16,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:16,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:16,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:16,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:16,627 INFO L134 CoverageAnalysis]: Checked inductivity of 454 backedges. 30 proven. 183 refuted. 0 times theorem prover too weak. 241 trivial. 0 not checked. [2020-10-13 23:28:16,627 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1963552866] [2020-10-13 23:28:16,627 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:16,627 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:28:16,628 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638778934] [2020-10-13 23:28:16,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:28:16,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:16,628 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:28:16,628 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=379, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:28:16,629 INFO L87 Difference]: Start difference. First operand 165 states and 191 transitions. Second operand 21 states. [2020-10-13 23:28:17,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:17,709 INFO L93 Difference]: Finished difference Result 181 states and 208 transitions. [2020-10-13 23:28:17,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:28:17,710 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 115 [2020-10-13 23:28:17,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:17,712 INFO L225 Difference]: With dead ends: 181 [2020-10-13 23:28:17,712 INFO L226 Difference]: Without dead ends: 179 [2020-10-13 23:28:17,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:28:17,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2020-10-13 23:28:17,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 126. [2020-10-13 23:28:17,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-13 23:28:17,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2020-10-13 23:28:17,724 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 115 [2020-10-13 23:28:17,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:17,724 INFO L479 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2020-10-13 23:28:17,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:28:17,724 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2020-10-13 23:28:17,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 23:28:17,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:17,726 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:17,726 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-13 23:28:17,726 INFO L427 AbstractCegarLoop]: === Iteration 28 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:17,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:17,726 INFO L82 PathProgramCache]: Analyzing trace with hash -153886243, now seen corresponding path program 6 times [2020-10-13 23:28:17,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:17,727 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605991639] [2020-10-13 23:28:17,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:17,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:17,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:17,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:22,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:22,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 23:28:22,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:28:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 23:28:22,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:22,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:28:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:28:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-13 23:28:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:23,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:23,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:23,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:23,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:23,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:23,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:23,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:23,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:23,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:23,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:23,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:28:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:23,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:23,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:23,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:23,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:23,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:23,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:23,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:23,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:23,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:23,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:28:23,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:23,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:23,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:23,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:23,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:23,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:23,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:23,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:23,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:28:23,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:23,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:23,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:23,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:23,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:23,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:23,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:23,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:23,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:23,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:23,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:28:23,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:23,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:23,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:23,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:23,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:23,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:23,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:23,124 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:23,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:28:23,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:23,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:23,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:23,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:23,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:23,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:23,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:23,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:23,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:23,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:23,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:23,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:23,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 23:28:23,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:23,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:23,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:23,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:23,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:23,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:23,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:23,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:23,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:23,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:23,149 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 12 proven. 225 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2020-10-13 23:28:23,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605991639] [2020-10-13 23:28:23,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:23,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:28:23,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480678996] [2020-10-13 23:28:23,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:28:23,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:23,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:28:23,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:28:23,151 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand 21 states. [2020-10-13 23:28:24,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:24,252 INFO L93 Difference]: Finished difference Result 182 states and 209 transitions. [2020-10-13 23:28:24,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:28:24,253 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 123 [2020-10-13 23:28:24,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:24,255 INFO L225 Difference]: With dead ends: 182 [2020-10-13 23:28:24,255 INFO L226 Difference]: Without dead ends: 180 [2020-10-13 23:28:24,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=96, Invalid=1026, Unknown=0, NotChecked=0, Total=1122 [2020-10-13 23:28:24,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-13 23:28:24,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2020-10-13 23:28:24,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-13 23:28:24,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 200 transitions. [2020-10-13 23:28:24,271 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 200 transitions. Word has length 123 [2020-10-13 23:28:24,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:24,271 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 200 transitions. [2020-10-13 23:28:24,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:28:24,271 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 200 transitions. [2020-10-13 23:28:24,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-13 23:28:24,273 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:24,273 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 11, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:24,273 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-13 23:28:24,273 INFO L427 AbstractCegarLoop]: === Iteration 29 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:24,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:24,274 INFO L82 PathProgramCache]: Analyzing trace with hash -1414803493, now seen corresponding path program 12 times [2020-10-13 23:28:24,274 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:24,274 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324202031] [2020-10-13 23:28:24,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:24,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:24,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:27,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:27,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:29,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:29,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-13 23:28:29,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:28:29,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:28:29,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:29,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-13 23:28:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-10-13 23:28:29,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-13 23:28:29,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:29,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:29,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:29,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:29,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:29,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:29,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:29,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:29,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:29,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:29,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:29,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:29,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:29,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-13 23:28:29,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:29,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:29,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:29,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:29,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:29,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:29,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:29,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-13 23:28:29,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:29,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:29,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:29,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:29,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:29,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:29,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:29,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:29,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:29,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:29,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:29,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-13 23:28:29,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:29,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:29,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:29,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:29,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:29,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:29,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:29,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-13 23:28:29,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:29,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:29,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:29,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:29,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:29,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:29,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:29,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:29,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:29,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:29,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-13 23:28:29,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:29,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:29,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:29,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:29,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:29,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:29,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:29,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:29,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:29,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:29,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:29,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 23:28:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:29,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:29,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:29,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:29,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:29,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:29,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:29,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:29,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:29,462 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 12 proven. 210 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2020-10-13 23:28:29,462 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324202031] [2020-10-13 23:28:29,462 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:29,463 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-13 23:28:29,463 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1108838497] [2020-10-13 23:28:29,463 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-13 23:28:29,463 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:29,464 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-13 23:28:29,464 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-13 23:28:29,464 INFO L87 Difference]: Start difference. First operand 174 states and 200 transitions. Second operand 16 states. [2020-10-13 23:28:29,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:29,675 INFO L93 Difference]: Finished difference Result 330 states and 388 transitions. [2020-10-13 23:28:29,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-13 23:28:29,676 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2020-10-13 23:28:29,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:29,678 INFO L225 Difference]: With dead ends: 330 [2020-10-13 23:28:29,678 INFO L226 Difference]: Without dead ends: 187 [2020-10-13 23:28:29,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 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 23:28:29,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-10-13 23:28:29,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 182. [2020-10-13 23:28:29,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-13 23:28:29,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 210 transitions. [2020-10-13 23:28:29,695 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 210 transitions. Word has length 123 [2020-10-13 23:28:29,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:29,696 INFO L479 AbstractCegarLoop]: Abstraction has 182 states and 210 transitions. [2020-10-13 23:28:29,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-13 23:28:29,696 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 210 transitions. [2020-10-13 23:28:29,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-13 23:28:29,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:29,698 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:29,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-13 23:28:29,698 INFO L427 AbstractCegarLoop]: === Iteration 30 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:29,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:29,698 INFO L82 PathProgramCache]: Analyzing trace with hash -2002515998, now seen corresponding path program 13 times [2020-10-13 23:28:29,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:29,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [797779651] [2020-10-13 23:28:29,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:29,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:29,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:29,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:33,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:33,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:34,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:34,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-13 23:28:34,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:28:34,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:28:34,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:34,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:28:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:28:34,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-13 23:28:34,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:35,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:35,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:35,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:35,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:35,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:35,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:35,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:35,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:35,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:28:35,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:35,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:35,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:35,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:35,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:35,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:35,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:35,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:35,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:35,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:35,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:35,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:28:35,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:35,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:35,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:35,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:35,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:35,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:35,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:35,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:35,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:35,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 23:28:35,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:35,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:35,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:35,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:35,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:35,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:35,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:35,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:35,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:35,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:35,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:28:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:35,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:35,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:35,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:35,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:35,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:35,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:35,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:35,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:35,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:35,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 23:28:35,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:35,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:35,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:35,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:35,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:35,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:35,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:35,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:35,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:35,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:35,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 23:28:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:35,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:35,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:35,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:35,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:35,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:35,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:35,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:35,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:35,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:35,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:35,155 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 32 proven. 242 refuted. 0 times theorem prover too weak. 286 trivial. 0 not checked. [2020-10-13 23:28:35,155 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [797779651] [2020-10-13 23:28:35,155 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:35,156 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:28:35,156 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558369348] [2020-10-13 23:28:35,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:28:35,156 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:35,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:28:35,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=461, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:28:35,157 INFO L87 Difference]: Start difference. First operand 182 states and 210 transitions. Second operand 23 states. [2020-10-13 23:28:36,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:36,454 INFO L93 Difference]: Finished difference Result 198 states and 227 transitions. [2020-10-13 23:28:36,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:28:36,455 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 128 [2020-10-13 23:28:36,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:36,457 INFO L225 Difference]: With dead ends: 198 [2020-10-13 23:28:36,457 INFO L226 Difference]: Without dead ends: 196 [2020-10-13 23:28:36,458 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=1150, Unknown=0, NotChecked=0, Total=1260 [2020-10-13 23:28:36,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-10-13 23:28:36,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 139. [2020-10-13 23:28:36,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-13 23:28:36,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 154 transitions. [2020-10-13 23:28:36,471 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 154 transitions. Word has length 128 [2020-10-13 23:28:36,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:36,471 INFO L479 AbstractCegarLoop]: Abstraction has 139 states and 154 transitions. [2020-10-13 23:28:36,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:28:36,472 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 154 transitions. [2020-10-13 23:28:36,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 23:28:36,473 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:36,473 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 13, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:36,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-13 23:28:36,473 INFO L427 AbstractCegarLoop]: === Iteration 31 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:36,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:36,474 INFO L82 PathProgramCache]: Analyzing trace with hash 685160859, now seen corresponding path program 7 times [2020-10-13 23:28:36,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:36,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938380921] [2020-10-13 23:28:36,474 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:36,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:36,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:36,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:40,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:41,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:41,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 23:28:41,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-13 23:28:41,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:28:41,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:41,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:28:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:28:41,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-13 23:28:41,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:41,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:41,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:41,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:41,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:41,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:41,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:41,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:41,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:41,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:41,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:41,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:41,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:28:41,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:41,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:41,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:41,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:28:41,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:41,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:41,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:41,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:41,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:28:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:41,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:41,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:41,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:41,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:41,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:41,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:41,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:41,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:41,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:41,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:41,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:41,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 23:28:41,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:41,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:41,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:41,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:41,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:28:41,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:41,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:41,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:41,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:41,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:28:41,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:41,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:41,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:41,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:41,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:41,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:41,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:41,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:41,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:41,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:41,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:41,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 23:28:41,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:41,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:41,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:41,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:41,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:41,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-13 23:28:41,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:41,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:41,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:41,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:41,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:41,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 23:28:41,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:41,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:41,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:41,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:41,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:41,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:41,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:41,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:41,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 23:28:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:41,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:42,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:42,001 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:42,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:42,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-13 23:28:42,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:42,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:42,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-13 23:28:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:42,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-13 23:28:42,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:42,086 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 14 proven. 288 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2020-10-13 23:28:42,087 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938380921] [2020-10-13 23:28:42,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:42,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:28:42,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154068428] [2020-10-13 23:28:42,091 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:28:42,092 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:42,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:28:42,093 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:28:42,093 INFO L87 Difference]: Start difference. First operand 139 states and 154 transitions. Second operand 23 states. [2020-10-13 23:28:43,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:43,653 INFO L93 Difference]: Finished difference Result 199 states and 228 transitions. [2020-10-13 23:28:43,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:28:43,654 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 136 [2020-10-13 23:28:43,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:43,656 INFO L225 Difference]: With dead ends: 199 [2020-10-13 23:28:43,656 INFO L226 Difference]: Without dead ends: 197 [2020-10-13 23:28:43,657 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=104, Invalid=1228, Unknown=0, NotChecked=0, Total=1332 [2020-10-13 23:28:43,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2020-10-13 23:28:43,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 191. [2020-10-13 23:28:43,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-13 23:28:43,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 219 transitions. [2020-10-13 23:28:43,676 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 219 transitions. Word has length 136 [2020-10-13 23:28:43,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:43,676 INFO L479 AbstractCegarLoop]: Abstraction has 191 states and 219 transitions. [2020-10-13 23:28:43,676 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:28:43,676 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 219 transitions. [2020-10-13 23:28:43,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-13 23:28:43,678 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:43,678 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 13, 12, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:43,678 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-13 23:28:43,679 INFO L427 AbstractCegarLoop]: === Iteration 32 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:43,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:43,679 INFO L82 PathProgramCache]: Analyzing trace with hash -1923626599, now seen corresponding path program 14 times [2020-10-13 23:28:43,679 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:43,679 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1834268382] [2020-10-13 23:28:43,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:43,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:43,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:43,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:47,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-13 23:28:48,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-13 23:28:48,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:28:48,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-13 23:28:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-13 23:28:48,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-13 23:28:48,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:48,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:48,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:48,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:48,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:48,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-13 23:28:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:48,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,881 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:48,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-13 23:28:48,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-13 23:28:48,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:48,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-13 23:28:48,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:48,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:48,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-13 23:28:48,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:48,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:48,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-13 23:28:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:48,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 23:28:48,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:48,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:48,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 23:28:48,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:48,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:48,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:48,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:48,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:48,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:48,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:28:48,947 INFO L134 CoverageAnalysis]: Checked inductivity of 612 backedges. 14 proven. 247 refuted. 0 times theorem prover too weak. 351 trivial. 0 not checked. [2020-10-13 23:28:48,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1834268382] [2020-10-13 23:28:48,948 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:48,948 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-13 23:28:48,949 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920826134] [2020-10-13 23:28:48,949 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-13 23:28:48,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:48,950 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-13 23:28:48,950 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-13 23:28:48,950 INFO L87 Difference]: Start difference. First operand 191 states and 219 transitions. Second operand 17 states. [2020-10-13 23:28:49,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:49,216 INFO L93 Difference]: Finished difference Result 362 states and 424 transitions. [2020-10-13 23:28:49,216 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-13 23:28:49,217 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 136 [2020-10-13 23:28:49,217 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:49,219 INFO L225 Difference]: With dead ends: 362 [2020-10-13 23:28:49,219 INFO L226 Difference]: Without dead ends: 204 [2020-10-13 23:28:49,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 17 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 23:28:49,221 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-13 23:28:49,252 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 199. [2020-10-13 23:28:49,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-10-13 23:28:49,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 229 transitions. [2020-10-13 23:28:49,257 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 229 transitions. Word has length 136 [2020-10-13 23:28:49,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:49,257 INFO L479 AbstractCegarLoop]: Abstraction has 199 states and 229 transitions. [2020-10-13 23:28:49,257 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-13 23:28:49,258 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 229 transitions. [2020-10-13 23:28:49,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-13 23:28:49,259 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:49,259 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 14, 14, 13, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:49,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-13 23:28:49,259 INFO L427 AbstractCegarLoop]: === Iteration 33 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:49,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:49,260 INFO L82 PathProgramCache]: Analyzing trace with hash -1011562066, now seen corresponding path program 15 times [2020-10-13 23:28:49,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:49,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [195536456] [2020-10-13 23:28:49,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:49,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:49,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-13 23:28:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:28:54,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-13 23:28:54,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:54,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-13 23:28:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-10-13 23:28:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-13 23:28:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:54,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:54,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:54,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:54,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:54,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:54,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:54,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:54,470 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:54,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:54,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:54,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:54,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:54,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-13 23:28:54,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:54,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:54,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:54,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:54,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:54,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:54,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:54,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:54,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:54,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-13 23:28:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:54,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:54,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:54,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:54,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:54,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:54,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:54,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:54,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:54,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-13 23:28:54,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:54,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:54,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:54,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:54,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:54,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:54,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:54,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:54,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:54,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:54,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-13 23:28:54,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:54,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:54,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:54,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:54,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:54,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:54,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:54,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:54,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:54,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-13 23:28:54,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:54,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:54,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:54,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:54,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:54,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:54,485 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:54,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:54,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:54,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:28:54,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:54,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:54,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:54,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:54,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:54,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:54,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:54,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:54,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:54,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 23:28:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:54,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:54,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:54,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:54,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:54,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:54,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:54,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 679 backedges. 14 proven. 287 refuted. 0 times theorem prover too weak. 378 trivial. 0 not checked. [2020-10-13 23:28:54,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [195536456] [2020-10-13 23:28:54,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:54,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-13 23:28:54,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519598375] [2020-10-13 23:28:54,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-13 23:28:54,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:54,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-13 23:28:54,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-13 23:28:54,501 INFO L87 Difference]: Start difference. First operand 199 states and 229 transitions. Second operand 18 states. [2020-10-13 23:28:54,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:28:54,720 INFO L93 Difference]: Finished difference Result 376 states and 442 transitions. [2020-10-13 23:28:54,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-13 23:28:54,723 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 141 [2020-10-13 23:28:54,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:28:54,725 INFO L225 Difference]: With dead ends: 376 [2020-10-13 23:28:54,725 INFO L226 Difference]: Without dead ends: 212 [2020-10-13 23:28:54,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 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 23:28:54,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-10-13 23:28:54,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 207. [2020-10-13 23:28:54,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 207 states. [2020-10-13 23:28:54,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 239 transitions. [2020-10-13 23:28:54,750 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 239 transitions. Word has length 141 [2020-10-13 23:28:54,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:28:54,750 INFO L479 AbstractCegarLoop]: Abstraction has 207 states and 239 transitions. [2020-10-13 23:28:54,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-13 23:28:54,751 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 239 transitions. [2020-10-13 23:28:54,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-13 23:28:54,753 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:28:54,753 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 15, 15, 14, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:28:54,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-13 23:28:54,753 INFO L427 AbstractCegarLoop]: === Iteration 34 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:28:54,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:28:54,754 INFO L82 PathProgramCache]: Analyzing trace with hash 699191421, now seen corresponding path program 16 times [2020-10-13 23:28:54,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:28:54,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1570761918] [2020-10-13 23:28:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:28:54,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:54,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:54,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:59,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-13 23:28:59,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:28:59,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-13 23:28:59,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:59,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:59,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-13 23:28:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-10-13 23:28:59,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-13 23:28:59,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:59,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:28:59,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:59,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:59,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:28:59,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:59,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:59,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:59,965 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:28:59,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:59,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:59,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-13 23:28:59,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:59,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:59,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:59,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:59,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:28:59,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:59,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:59,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:59,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:59,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:59,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-13 23:28:59,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:59,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:59,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:59,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:59,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:59,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:59,973 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:59,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:59,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:59,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-13 23:28:59,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:59,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:59,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:59,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:59,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:59,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:59,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:59,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:59,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:59,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:59,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-13 23:28:59,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:59,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:59,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:59,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:59,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:59,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:59,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:59,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-13 23:28:59,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:59,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:59,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:59,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:59,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:59,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:59,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:59,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:59,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:59,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 23:28:59,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:59,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:59,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:59,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:59,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:59,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:59,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:59,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:59,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:59,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:59,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:59,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 23:28:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:28:59,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:28:59,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:28:59,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:28:59,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:28:59,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:28:59,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:28:59,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:28:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:28:59,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:28:59,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:28:59,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:28:59,995 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 14 proven. 330 refuted. 0 times theorem prover too weak. 407 trivial. 0 not checked. [2020-10-13 23:28:59,996 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1570761918] [2020-10-13 23:28:59,996 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:28:59,996 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-13 23:28:59,996 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1772090742] [2020-10-13 23:28:59,996 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-13 23:28:59,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:28:59,997 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-13 23:28:59,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-13 23:28:59,997 INFO L87 Difference]: Start difference. First operand 207 states and 239 transitions. Second operand 19 states. [2020-10-13 23:29:00,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:00,253 INFO L93 Difference]: Finished difference Result 390 states and 460 transitions. [2020-10-13 23:29:00,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-13 23:29:00,254 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 146 [2020-10-13 23:29:00,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:00,255 INFO L225 Difference]: With dead ends: 390 [2020-10-13 23:29:00,255 INFO L226 Difference]: Without dead ends: 220 [2020-10-13 23:29:00,256 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 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 23:29:00,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2020-10-13 23:29:00,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 215. [2020-10-13 23:29:00,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-13 23:29:00,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 249 transitions. [2020-10-13 23:29:00,275 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 249 transitions. Word has length 146 [2020-10-13 23:29:00,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:00,275 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 249 transitions. [2020-10-13 23:29:00,275 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-13 23:29:00,276 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 249 transitions. [2020-10-13 23:29:00,277 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-10-13 23:29:00,277 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:00,277 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 16, 16, 15, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:00,277 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-13 23:29:00,277 INFO L427 AbstractCegarLoop]: === Iteration 35 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:00,277 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:00,278 INFO L82 PathProgramCache]: Analyzing trace with hash -467014966, now seen corresponding path program 17 times [2020-10-13 23:29:00,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:00,278 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496951583] [2020-10-13 23:29:00,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:00,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:00,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:00,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:05,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-13 23:29:05,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:05,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-13 23:29:05,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:05,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-13 23:29:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-13 23:29:05,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-13 23:29:05,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:05,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:05,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:05,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:05,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:05,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:05,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:05,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:05,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:05,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:05,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:05,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:05,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-13 23:29:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:05,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:05,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:05,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:05,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:05,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:05,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-13 23:29:05,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:05,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:05,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:05,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:05,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:05,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:05,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:05,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:05,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:05,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-13 23:29:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:05,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:05,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:05,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:05,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:05,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:05,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:05,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:05,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:05,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-13 23:29:05,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:05,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:05,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:05,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:05,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:05,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:05,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:05,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-13 23:29:05,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:05,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:05,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:05,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:05,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:05,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:05,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:05,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:05,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:05,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:29:05,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:05,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:05,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:05,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:05,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:05,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:05,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:05,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:05,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:05,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:29:05,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:05,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:05,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:05,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:05,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:05,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:05,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:05,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:05,540 INFO L134 CoverageAnalysis]: Checked inductivity of 828 backedges. 14 proven. 376 refuted. 0 times theorem prover too weak. 438 trivial. 0 not checked. [2020-10-13 23:29:05,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496951583] [2020-10-13 23:29:05,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:05,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-13 23:29:05,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669741077] [2020-10-13 23:29:05,542 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-13 23:29:05,542 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:05,542 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-13 23:29:05,542 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:29:05,543 INFO L87 Difference]: Start difference. First operand 215 states and 249 transitions. Second operand 20 states. [2020-10-13 23:29:05,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:05,795 INFO L93 Difference]: Finished difference Result 404 states and 478 transitions. [2020-10-13 23:29:05,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-13 23:29:05,795 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 151 [2020-10-13 23:29:05,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:05,798 INFO L225 Difference]: With dead ends: 404 [2020-10-13 23:29:05,798 INFO L226 Difference]: Without dead ends: 228 [2020-10-13 23:29:05,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-13 23:29:05,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2020-10-13 23:29:05,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 223. [2020-10-13 23:29:05,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 223 states. [2020-10-13 23:29:05,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 259 transitions. [2020-10-13 23:29:05,816 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 259 transitions. Word has length 151 [2020-10-13 23:29:05,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:05,817 INFO L479 AbstractCegarLoop]: Abstraction has 223 states and 259 transitions. [2020-10-13 23:29:05,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-13 23:29:05,817 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 259 transitions. [2020-10-13 23:29:05,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-10-13 23:29:05,818 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:05,818 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 17, 17, 16, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:05,819 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-13 23:29:05,819 INFO L427 AbstractCegarLoop]: === Iteration 36 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:05,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:05,819 INFO L82 PathProgramCache]: Analyzing trace with hash -1985865887, now seen corresponding path program 18 times [2020-10-13 23:29:05,819 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:05,819 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [529935006] [2020-10-13 23:29:05,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:05,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:05,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:10,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:10,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-13 23:29:10,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:10,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-13 23:29:10,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:10,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:10,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-13 23:29:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-13 23:29:10,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-13 23:29:10,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:11,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:11,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:11,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:11,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:11,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:11,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:11,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:11,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:11,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:11,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:11,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-13 23:29:11,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:11,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:11,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:11,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:11,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:11,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:11,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:11,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:11,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-13 23:29:11,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:11,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:11,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:11,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:11,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:11,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:11,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:11,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:11,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:11,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:11,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-13 23:29:11,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:11,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:11,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:11,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:11,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:11,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:11,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:11,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:11,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:11,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-13 23:29:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:11,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:11,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:11,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:11,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:11,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:11,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:11,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:11,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:11,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:11,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-13 23:29:11,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:11,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:11,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:11,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:11,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:11,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:11,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:11,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:11,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:11,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:11,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:29:11,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:11,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:11,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:11,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:11,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:11,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:11,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:11,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:11,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:11,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:11,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-13 23:29:11,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:11,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:11,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:11,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:11,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:11,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:11,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:11,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:11,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:11,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:11,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:11,125 INFO L134 CoverageAnalysis]: Checked inductivity of 910 backedges. 14 proven. 425 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-13 23:29:11,126 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [529935006] [2020-10-13 23:29:11,126 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:11,126 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-13 23:29:11,126 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159119191] [2020-10-13 23:29:11,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-13 23:29:11,127 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:11,127 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-13 23:29:11,127 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-13 23:29:11,127 INFO L87 Difference]: Start difference. First operand 223 states and 259 transitions. Second operand 21 states. [2020-10-13 23:29:11,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:11,385 INFO L93 Difference]: Finished difference Result 418 states and 496 transitions. [2020-10-13 23:29:11,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-13 23:29:11,385 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 156 [2020-10-13 23:29:11,386 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:11,387 INFO L225 Difference]: With dead ends: 418 [2020-10-13 23:29:11,387 INFO L226 Difference]: Without dead ends: 236 [2020-10-13 23:29:11,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 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 23:29:11,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2020-10-13 23:29:11,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 231. [2020-10-13 23:29:11,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 231 states. [2020-10-13 23:29:11,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 269 transitions. [2020-10-13 23:29:11,410 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 269 transitions. Word has length 156 [2020-10-13 23:29:11,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:11,411 INFO L479 AbstractCegarLoop]: Abstraction has 231 states and 269 transitions. [2020-10-13 23:29:11,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-13 23:29:11,411 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 269 transitions. [2020-10-13 23:29:11,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-13 23:29:11,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:11,412 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 18, 18, 17, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:11,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-13 23:29:11,413 INFO L427 AbstractCegarLoop]: === Iteration 37 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:11,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:11,413 INFO L82 PathProgramCache]: Analyzing trace with hash 142978022, now seen corresponding path program 19 times [2020-10-13 23:29:11,413 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:11,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1719709912] [2020-10-13 23:29:11,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:11,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:11,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:16,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:16,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-13 23:29:16,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:16,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:29:16,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:16,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-13 23:29:16,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-13 23:29:16,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-13 23:29:16,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:16,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:16,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:16,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:16,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:16,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:16,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:16,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:16,689 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:16,689 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:16,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:16,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:16,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:16,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-13 23:29:16,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:16,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:16,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:16,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:16,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:16,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:16,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:16,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:16,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:16,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:16,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:16,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:16,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-13 23:29:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:16,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:16,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:16,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:16,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:16,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:16,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:16,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:16,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:16,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:16,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-13 23:29:16,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:16,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:16,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:16,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:16,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:16,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:16,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:16,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:16,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-13 23:29:16,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:16,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:16,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:16,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:16,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:16,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:16,701 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:16,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:16,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:16,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:16,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-13 23:29:16,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:16,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:16,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:16,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:16,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 23:29:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:16,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:16,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:16,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:16,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:16,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:16,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:16,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:16,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:16,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:16,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 23:29:16,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:16,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:16,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:16,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:16,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:16,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:16,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:16,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:16,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:16,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:16,721 INFO L134 CoverageAnalysis]: Checked inductivity of 997 backedges. 14 proven. 477 refuted. 0 times theorem prover too weak. 506 trivial. 0 not checked. [2020-10-13 23:29:16,721 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1719709912] [2020-10-13 23:29:16,721 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:16,722 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-13 23:29:16,722 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290596040] [2020-10-13 23:29:16,722 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-13 23:29:16,722 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:16,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-13 23:29:16,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-13 23:29:16,723 INFO L87 Difference]: Start difference. First operand 231 states and 269 transitions. Second operand 22 states. [2020-10-13 23:29:16,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:17,000 INFO L93 Difference]: Finished difference Result 432 states and 514 transitions. [2020-10-13 23:29:17,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-13 23:29:17,000 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 161 [2020-10-13 23:29:17,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:17,002 INFO L225 Difference]: With dead ends: 432 [2020-10-13 23:29:17,002 INFO L226 Difference]: Without dead ends: 244 [2020-10-13 23:29:17,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 17 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 23:29:17,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2020-10-13 23:29:17,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 239. [2020-10-13 23:29:17,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-10-13 23:29:17,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 279 transitions. [2020-10-13 23:29:17,023 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 279 transitions. Word has length 161 [2020-10-13 23:29:17,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:17,023 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 279 transitions. [2020-10-13 23:29:17,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-13 23:29:17,023 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 279 transitions. [2020-10-13 23:29:17,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-13 23:29:17,024 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:17,025 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 19, 19, 18, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:17,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-13 23:29:17,025 INFO L427 AbstractCegarLoop]: === Iteration 38 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:17,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:17,025 INFO L82 PathProgramCache]: Analyzing trace with hash 545906245, now seen corresponding path program 20 times [2020-10-13 23:29:17,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:17,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1687178986] [2020-10-13 23:29:17,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:17,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:17,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:17,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:22,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-13 23:29:22,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:22,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-13 23:29:22,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:22,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:22,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-13 23:29:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-13 23:29:22,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-13 23:29:22,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:22,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:22,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:22,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:22,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:22,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:22,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:22,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:22,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:22,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:22,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-13 23:29:22,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:22,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:22,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:22,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:22,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:22,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:22,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:22,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:22,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:22,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-13 23:29:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:22,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:22,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:22,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:22,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:22,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:22,338 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:22,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:22,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:22,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-13 23:29:22,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:22,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:22,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:22,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:22,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:22,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:22,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:22,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:22,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-13 23:29:22,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:22,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:22,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:22,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:22,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:22,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:22,346 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:22,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:22,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:22,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:22,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-13 23:29:22,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:22,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:22,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:22,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:22,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:22,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:22,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 23:29:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:22,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:22,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:22,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:22,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:22,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:22,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:22,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:22,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:22,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 23:29:22,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:22,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:22,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:22,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:22,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:22,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:22,361 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:22,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:22,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:22,379 INFO L134 CoverageAnalysis]: Checked inductivity of 1089 backedges. 14 proven. 532 refuted. 0 times theorem prover too weak. 543 trivial. 0 not checked. [2020-10-13 23:29:22,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1687178986] [2020-10-13 23:29:22,380 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:22,380 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-13 23:29:22,380 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410485364] [2020-10-13 23:29:22,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-13 23:29:22,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:22,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-13 23:29:22,383 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-13 23:29:22,383 INFO L87 Difference]: Start difference. First operand 239 states and 279 transitions. Second operand 23 states. [2020-10-13 23:29:22,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:22,656 INFO L93 Difference]: Finished difference Result 446 states and 532 transitions. [2020-10-13 23:29:22,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-13 23:29:22,657 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 166 [2020-10-13 23:29:22,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:22,659 INFO L225 Difference]: With dead ends: 446 [2020-10-13 23:29:22,659 INFO L226 Difference]: Without dead ends: 252 [2020-10-13 23:29:22,660 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 17 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 23:29:22,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-13 23:29:22,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 247. [2020-10-13 23:29:22,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 247 states. [2020-10-13 23:29:22,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 289 transitions. [2020-10-13 23:29:22,680 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 289 transitions. Word has length 166 [2020-10-13 23:29:22,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:22,680 INFO L479 AbstractCegarLoop]: Abstraction has 247 states and 289 transitions. [2020-10-13 23:29:22,681 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-13 23:29:22,681 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 289 transitions. [2020-10-13 23:29:22,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-13 23:29:22,682 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:22,682 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 20, 19, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:22,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-13 23:29:22,683 INFO L427 AbstractCegarLoop]: === Iteration 39 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:22,683 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:22,683 INFO L82 PathProgramCache]: Analyzing trace with hash -1405760254, now seen corresponding path program 21 times [2020-10-13 23:29:22,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:22,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828092447] [2020-10-13 23:29:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:22,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:22,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:22,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:27,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:27,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-13 23:29:27,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:27,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-13 23:29:27,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:27,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-13 23:29:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-13 23:29:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-13 23:29:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:28,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:28,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:28,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:28,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:28,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:28,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:28,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:28,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:28,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:28,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-13 23:29:28,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:28,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:28,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:28,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:28,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:28,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:28,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:28,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:28,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:28,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-13 23:29:28,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:28,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:28,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:28,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:28,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:28,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:28,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:28,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:28,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:28,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:28,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-13 23:29:28,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:28,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:28,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:28,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:28,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:28,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:28,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:28,028 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:28,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:28,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:28,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:28,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-13 23:29:28,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:28,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:28,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:28,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:28,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:28,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:28,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:28,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:28,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:28,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-13 23:29:28,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:28,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:28,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:28,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:28,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:28,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:28,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:28,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:28,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:28,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:28,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-13 23:29:28,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:28,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:28,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:28,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:28,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:28,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:28,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:28,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:28,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:28,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:28,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-13 23:29:28,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:28,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:28,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:28,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:28,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:28,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:28,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:28,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:28,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:28,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:28,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1186 backedges. 14 proven. 590 refuted. 0 times theorem prover too weak. 582 trivial. 0 not checked. [2020-10-13 23:29:28,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828092447] [2020-10-13 23:29:28,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:28,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-13 23:29:28,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980587051] [2020-10-13 23:29:28,054 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-13 23:29:28,054 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:28,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-13 23:29:28,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-13 23:29:28,055 INFO L87 Difference]: Start difference. First operand 247 states and 289 transitions. Second operand 24 states. [2020-10-13 23:29:28,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:28,330 INFO L93 Difference]: Finished difference Result 460 states and 550 transitions. [2020-10-13 23:29:28,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-13 23:29:28,331 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 171 [2020-10-13 23:29:28,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:28,333 INFO L225 Difference]: With dead ends: 460 [2020-10-13 23:29:28,333 INFO L226 Difference]: Without dead ends: 260 [2020-10-13 23:29:28,334 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 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 23:29:28,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2020-10-13 23:29:28,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 255. [2020-10-13 23:29:28,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-10-13 23:29:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 299 transitions. [2020-10-13 23:29:28,351 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 299 transitions. Word has length 171 [2020-10-13 23:29:28,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:28,352 INFO L479 AbstractCegarLoop]: Abstraction has 255 states and 299 transitions. [2020-10-13 23:29:28,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-13 23:29:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 299 transitions. [2020-10-13 23:29:28,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-13 23:29:28,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:28,353 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 21, 21, 20, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:28,353 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-13 23:29:28,353 INFO L427 AbstractCegarLoop]: === Iteration 40 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:28,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:28,353 INFO L82 PathProgramCache]: Analyzing trace with hash -1657379543, now seen corresponding path program 22 times [2020-10-13 23:29:28,354 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:28,354 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [478188381] [2020-10-13 23:29:28,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:28,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:28,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:28,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:33,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:33,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-13 23:29:33,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:33,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-13 23:29:33,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:33,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-13 23:29:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-13 23:29:33,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-13 23:29:33,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:33,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:33,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:33,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:33,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:33,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:33,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:33,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:33,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:33,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:33,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-13 23:29:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:33,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:33,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:33,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:33,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:33,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:33,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:33,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-13 23:29:33,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:33,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:33,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:33,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:33,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:33,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:33,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:33,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:33,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:33,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:33,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-13 23:29:33,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:33,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:33,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:33,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:33,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:33,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:33,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:33,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:33,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:33,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:33,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2020-10-13 23:29:33,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:33,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:33,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:33,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:33,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:33,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:33,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:33,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:33,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:33,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:33,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-13 23:29:33,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:33,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:33,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:33,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:33,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:33,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:33,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:33,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:33,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:33,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:33,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-13 23:29:33,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:33,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:33,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:33,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:33,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:33,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:33,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:33,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:33,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:33,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:33,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2020-10-13 23:29:33,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:33,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:33,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:33,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:33,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:33,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:33,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:33,710 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:33,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:33,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:33,724 INFO L134 CoverageAnalysis]: Checked inductivity of 1288 backedges. 14 proven. 651 refuted. 0 times theorem prover too weak. 623 trivial. 0 not checked. [2020-10-13 23:29:33,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [478188381] [2020-10-13 23:29:33,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:33,725 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-13 23:29:33,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364369007] [2020-10-13 23:29:33,725 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-13 23:29:33,725 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:33,725 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-13 23:29:33,726 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:29:33,726 INFO L87 Difference]: Start difference. First operand 255 states and 299 transitions. Second operand 25 states. [2020-10-13 23:29:33,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:33,993 INFO L93 Difference]: Finished difference Result 474 states and 568 transitions. [2020-10-13 23:29:33,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-13 23:29:33,993 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 176 [2020-10-13 23:29:33,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:33,995 INFO L225 Difference]: With dead ends: 474 [2020-10-13 23:29:33,996 INFO L226 Difference]: Without dead ends: 268 [2020-10-13 23:29:33,997 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-13 23:29:33,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 268 states. [2020-10-13 23:29:34,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 268 to 263. [2020-10-13 23:29:34,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-13 23:29:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 309 transitions. [2020-10-13 23:29:34,012 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 309 transitions. Word has length 176 [2020-10-13 23:29:34,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:34,012 INFO L479 AbstractCegarLoop]: Abstraction has 263 states and 309 transitions. [2020-10-13 23:29:34,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-13 23:29:34,013 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 309 transitions. [2020-10-13 23:29:34,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-13 23:29:34,014 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:34,014 INFO L422 BasicCegarLoop]: trace histogram [22, 22, 22, 22, 21, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:34,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-13 23:29:34,015 INFO L427 AbstractCegarLoop]: === Iteration 41 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:34,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:34,015 INFO L82 PathProgramCache]: Analyzing trace with hash -584577506, now seen corresponding path program 23 times [2020-10-13 23:29:34,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:34,015 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1251205550] [2020-10-13 23:29:34,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:34,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:34,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:34,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:39,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-13 23:29:39,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:39,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-10-13 23:29:39,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:39,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-13 23:29:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-13 23:29:39,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-13 23:29:39,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:39,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:39,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:39,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:39,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:39,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:39,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:39,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:39,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:39,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:39,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-13 23:29:39,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:39,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:39,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:39,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:39,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:39,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:39,426 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:39,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:39,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:39,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-13 23:29:39,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:39,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:39,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:39,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:39,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:39,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:39,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:39,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:39,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-13 23:29:39,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:39,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:39,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:39,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:39,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:39,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:39,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:39,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:39,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:39,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-13 23:29:39,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:39,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:39,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:39,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:39,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:39,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:39,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:39,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:39,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:39,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:39,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-13 23:29:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:39,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:39,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:39,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:39,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:39,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:39,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:39,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:39,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:39,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:39,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2020-10-13 23:29:39,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:39,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:39,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:39,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:39,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:39,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:39,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:39,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:39,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:39,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:39,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2020-10-13 23:29:39,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:39,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:39,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:39,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:39,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:39,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:39,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:39,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:39,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:39,476 INFO L134 CoverageAnalysis]: Checked inductivity of 1395 backedges. 14 proven. 715 refuted. 0 times theorem prover too weak. 666 trivial. 0 not checked. [2020-10-13 23:29:39,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1251205550] [2020-10-13 23:29:39,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:39,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-13 23:29:39,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977887804] [2020-10-13 23:29:39,478 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-13 23:29:39,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:39,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-13 23:29:39,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-13 23:29:39,479 INFO L87 Difference]: Start difference. First operand 263 states and 309 transitions. Second operand 26 states. [2020-10-13 23:29:39,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:39,840 INFO L93 Difference]: Finished difference Result 488 states and 586 transitions. [2020-10-13 23:29:39,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-13 23:29:39,841 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 181 [2020-10-13 23:29:39,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:39,843 INFO L225 Difference]: With dead ends: 488 [2020-10-13 23:29:39,844 INFO L226 Difference]: Without dead ends: 276 [2020-10-13 23:29:39,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 17 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 23:29:39,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2020-10-13 23:29:39,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 271. [2020-10-13 23:29:39,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 271 states. [2020-10-13 23:29:39,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 319 transitions. [2020-10-13 23:29:39,865 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 319 transitions. Word has length 181 [2020-10-13 23:29:39,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:39,866 INFO L479 AbstractCegarLoop]: Abstraction has 271 states and 319 transitions. [2020-10-13 23:29:39,866 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-13 23:29:39,866 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 319 transitions. [2020-10-13 23:29:39,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 187 [2020-10-13 23:29:39,868 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:39,868 INFO L422 BasicCegarLoop]: trace histogram [23, 23, 23, 23, 22, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:39,868 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-13 23:29:39,868 INFO L427 AbstractCegarLoop]: === Iteration 42 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:39,869 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:39,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1308224525, now seen corresponding path program 24 times [2020-10-13 23:29:39,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:39,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838723225] [2020-10-13 23:29:39,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:39,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:44,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:44,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-13 23:29:44,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:44,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-13 23:29:44,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:44,908 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:44,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-13 23:29:44,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 59 [2020-10-13 23:29:44,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-13 23:29:44,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:45,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:45,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:45,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:45,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:45,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:45,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:45,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:45,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:45,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:45,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-13 23:29:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:45,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:45,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:45,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:45,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:45,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:45,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:45,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:45,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:45,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-13 23:29:45,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:45,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:45,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:45,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:45,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:45,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:45,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-13 23:29:45,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:45,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:45,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:45,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:45,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:45,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:45,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:45,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:45,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-13 23:29:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:45,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:45,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:45,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:45,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:45,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:45,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2020-10-13 23:29:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:45,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:45,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:45,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:45,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:45,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:45,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-13 23:29:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:45,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:45,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:45,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:45,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:45,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:45,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2020-10-13 23:29:45,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:45,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:45,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:45,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:45,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:45,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:45,339 INFO L134 CoverageAnalysis]: Checked inductivity of 1507 backedges. 14 proven. 782 refuted. 0 times theorem prover too weak. 711 trivial. 0 not checked. [2020-10-13 23:29:45,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838723225] [2020-10-13 23:29:45,339 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:45,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-13 23:29:45,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722417372] [2020-10-13 23:29:45,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-13 23:29:45,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:45,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-13 23:29:45,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-13 23:29:45,341 INFO L87 Difference]: Start difference. First operand 271 states and 319 transitions. Second operand 27 states. [2020-10-13 23:29:45,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:45,709 INFO L93 Difference]: Finished difference Result 502 states and 604 transitions. [2020-10-13 23:29:45,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-13 23:29:45,710 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 186 [2020-10-13 23:29:45,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:45,712 INFO L225 Difference]: With dead ends: 502 [2020-10-13 23:29:45,712 INFO L226 Difference]: Without dead ends: 284 [2020-10-13 23:29:45,713 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 17 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 23:29:45,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-13 23:29:45,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 279. [2020-10-13 23:29:45,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 279 states. [2020-10-13 23:29:45,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 329 transitions. [2020-10-13 23:29:45,734 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 329 transitions. Word has length 186 [2020-10-13 23:29:45,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:45,734 INFO L479 AbstractCegarLoop]: Abstraction has 279 states and 329 transitions. [2020-10-13 23:29:45,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-13 23:29:45,735 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 329 transitions. [2020-10-13 23:29:45,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2020-10-13 23:29:45,736 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:45,736 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 24, 24, 23, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:45,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-13 23:29:45,737 INFO L427 AbstractCegarLoop]: === Iteration 43 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:45,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:45,737 INFO L82 PathProgramCache]: Analyzing trace with hash -674615494, now seen corresponding path program 25 times [2020-10-13 23:29:45,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:45,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696375493] [2020-10-13 23:29:45,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:45,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:45,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:45,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:50,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:50,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 213 [2020-10-13 23:29:50,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-13 23:29:50,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:50,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-13 23:29:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 61 [2020-10-13 23:29:50,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-13 23:29:50,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:51,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:51,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:51,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:51,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:51,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:51,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:51,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:51,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:51,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:51,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:51,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:51,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-13 23:29:51,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:51,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:51,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:51,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:51,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:51,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:51,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:51,185 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:51,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:51,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:51,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-13 23:29:51,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:51,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:51,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:51,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:51,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:51,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:51,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:51,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:51,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:51,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:51,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-13 23:29:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:51,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:51,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:51,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:51,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:51,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:51,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:51,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:51,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:51,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:51,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-13 23:29:51,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:51,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:51,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:51,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:51,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:51,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:51,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:51,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:51,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-13 23:29:51,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:51,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:51,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:51,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:51,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:51,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:51,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:51,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:51,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2020-10-13 23:29:51,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:51,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:51,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:51,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:51,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:51,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:51,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:51,201 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:51,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:51,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:51,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2020-10-13 23:29:51,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:51,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:51,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:51,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:51,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:51,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:51,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:51,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:51,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:51,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:51,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-13 23:29:51,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1624 backedges. 14 proven. 852 refuted. 0 times theorem prover too weak. 758 trivial. 0 not checked. [2020-10-13 23:29:51,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696375493] [2020-10-13 23:29:51,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:51,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-13 23:29:51,221 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1883880937] [2020-10-13 23:29:51,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-13 23:29:51,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:51,222 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-13 23:29:51,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:29:51,222 INFO L87 Difference]: Start difference. First operand 279 states and 329 transitions. Second operand 28 states. [2020-10-13 23:29:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:51,575 INFO L93 Difference]: Finished difference Result 516 states and 622 transitions. [2020-10-13 23:29:51,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-13 23:29:51,576 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 191 [2020-10-13 23:29:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:51,578 INFO L225 Difference]: With dead ends: 516 [2020-10-13 23:29:51,579 INFO L226 Difference]: Without dead ends: 292 [2020-10-13 23:29:51,580 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-13 23:29:51,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2020-10-13 23:29:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 287. [2020-10-13 23:29:51,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-13 23:29:51,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 339 transitions. [2020-10-13 23:29:51,600 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 339 transitions. Word has length 191 [2020-10-13 23:29:51,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:51,601 INFO L479 AbstractCegarLoop]: Abstraction has 287 states and 339 transitions. [2020-10-13 23:29:51,601 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-13 23:29:51,601 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 339 transitions. [2020-10-13 23:29:51,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 197 [2020-10-13 23:29:51,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:51,603 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 25, 25, 24, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:51,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-13 23:29:51,603 INFO L427 AbstractCegarLoop]: === Iteration 44 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:51,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:51,603 INFO L82 PathProgramCache]: Analyzing trace with hash -2069449999, now seen corresponding path program 26 times [2020-10-13 23:29:51,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:51,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711613550] [2020-10-13 23:29:51,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:51,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:51,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:51,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:56,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:56,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-13 23:29:56,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:29:56,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-13 23:29:56,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:56,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:56,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-13 23:29:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-10-13 23:29:56,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-13 23:29:56,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:29:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:57,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:57,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:57,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:29:57,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:57,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:29:57,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:57,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:29:57,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:57,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:57,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-13 23:29:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:57,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:57,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:57,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:57,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:57,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:57,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-13 23:29:57,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:57,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:57,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:57,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:57,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:57,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:57,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:57,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:57,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:57,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:57,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-13 23:29:57,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:57,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:57,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:57,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:57,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:57,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:57,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:57,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:57,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:57,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:57,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:57,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-13 23:29:57,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:57,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:57,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:57,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:57,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:57,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:57,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:57,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:57,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:57,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2020-10-13 23:29:57,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:57,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:57,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:57,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:57,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:57,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:57,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:57,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:57,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:57,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:57,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:57,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:57,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2020-10-13 23:29:57,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:57,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:57,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:57,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:57,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:57,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:57,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:57,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:57,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:57,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2020-10-13 23:29:57,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:57,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:57,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:29:57,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:29:57,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:29:57,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:29:57,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:29:57,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:29:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:29:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:29:57,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:29:57,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:29:57,127 INFO L134 CoverageAnalysis]: Checked inductivity of 1746 backedges. 14 proven. 925 refuted. 0 times theorem prover too weak. 807 trivial. 0 not checked. [2020-10-13 23:29:57,127 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711613550] [2020-10-13 23:29:57,127 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:29:57,128 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-13 23:29:57,128 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556754412] [2020-10-13 23:29:57,128 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-13 23:29:57,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:29:57,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-13 23:29:57,129 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-13 23:29:57,129 INFO L87 Difference]: Start difference. First operand 287 states and 339 transitions. Second operand 29 states. [2020-10-13 23:29:57,525 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:29:57,525 INFO L93 Difference]: Finished difference Result 530 states and 640 transitions. [2020-10-13 23:29:57,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-13 23:29:57,526 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 196 [2020-10-13 23:29:57,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:29:57,528 INFO L225 Difference]: With dead ends: 530 [2020-10-13 23:29:57,529 INFO L226 Difference]: Without dead ends: 300 [2020-10-13 23:29:57,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 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 23:29:57,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-10-13 23:29:57,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 295. [2020-10-13 23:29:57,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 295 states. [2020-10-13 23:29:57,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 349 transitions. [2020-10-13 23:29:57,550 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 349 transitions. Word has length 196 [2020-10-13 23:29:57,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:29:57,550 INFO L479 AbstractCegarLoop]: Abstraction has 295 states and 349 transitions. [2020-10-13 23:29:57,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-13 23:29:57,551 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 349 transitions. [2020-10-13 23:29:57,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 202 [2020-10-13 23:29:57,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:29:57,552 INFO L422 BasicCegarLoop]: trace histogram [26, 26, 26, 26, 25, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:29:57,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-13 23:29:57,552 INFO L427 AbstractCegarLoop]: === Iteration 45 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:29:57,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:29:57,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1559629738, now seen corresponding path program 27 times [2020-10-13 23:29:57,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:29:57,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1093804716] [2020-10-13 23:29:57,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:29:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:29:57,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:29:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:02,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:02,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-13 23:30:02,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:02,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5044 [2020-10-13 23:30:02,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:02,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-13 23:30:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-13 23:30:02,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-13 23:30:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:03,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:03,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:03,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:03,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:03,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:03,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:03,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:30:03,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:03,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:03,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:03,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:03,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-13 23:30:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:03,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:03,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:03,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:03,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:03,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:03,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:03,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:03,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:03,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:03,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:03,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-13 23:30:03,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:03,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:03,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:03,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:03,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:03,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:03,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:03,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:03,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:03,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-13 23:30:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:03,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:03,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:03,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:03,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:03,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:03,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:03,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:03,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:03,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:03,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-13 23:30:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:03,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:03,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:03,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:03,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:03,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:03,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:03,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:03,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:03,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-13 23:30:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:03,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:03,115 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:03,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:03,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:03,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:03,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:03,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:03,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:03,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-13 23:30:03,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:03,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:03,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:03,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:03,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:03,117 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:03,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:03,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:03,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:03,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2020-10-13 23:30:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:03,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:03,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:03,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:03,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:03,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:03,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:03,137 INFO L134 CoverageAnalysis]: Checked inductivity of 1873 backedges. 14 proven. 1001 refuted. 0 times theorem prover too weak. 858 trivial. 0 not checked. [2020-10-13 23:30:03,137 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1093804716] [2020-10-13 23:30:03,138 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:03,138 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-13 23:30:03,138 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119412147] [2020-10-13 23:30:03,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-13 23:30:03,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:03,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-13 23:30:03,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:30:03,139 INFO L87 Difference]: Start difference. First operand 295 states and 349 transitions. Second operand 30 states. [2020-10-13 23:30:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:03,557 INFO L93 Difference]: Finished difference Result 544 states and 658 transitions. [2020-10-13 23:30:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-13 23:30:03,557 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 201 [2020-10-13 23:30:03,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:03,559 INFO L225 Difference]: With dead ends: 544 [2020-10-13 23:30:03,560 INFO L226 Difference]: Without dead ends: 308 [2020-10-13 23:30:03,562 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-13 23:30:03,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-13 23:30:03,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 303. [2020-10-13 23:30:03,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 303 states. [2020-10-13 23:30:03,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 359 transitions. [2020-10-13 23:30:03,584 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 359 transitions. Word has length 201 [2020-10-13 23:30:03,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:03,585 INFO L479 AbstractCegarLoop]: Abstraction has 303 states and 359 transitions. [2020-10-13 23:30:03,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-13 23:30:03,585 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 359 transitions. [2020-10-13 23:30:03,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-13 23:30:03,586 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:03,586 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 27, 27, 26, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:03,586 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-13 23:30:03,586 INFO L427 AbstractCegarLoop]: === Iteration 46 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:03,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:03,587 INFO L82 PathProgramCache]: Analyzing trace with hash -91293227, now seen corresponding path program 28 times [2020-10-13 23:30:03,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:03,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [17117427] [2020-10-13 23:30:03,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:03,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:03,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:03,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:08,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:08,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 228 [2020-10-13 23:30:08,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:08,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-13 23:30:08,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:08,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-13 23:30:08,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-13 23:30:08,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-13 23:30:08,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:09,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:09,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:09,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:09,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:09,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:09,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:30:09,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:09,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:09,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:09,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:09,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-13 23:30:09,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:09,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:09,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:09,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:09,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:09,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:09,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:09,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:09,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:09,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:09,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-13 23:30:09,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:09,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:09,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:09,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:09,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:09,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:09,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:09,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:09,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:09,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:09,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-13 23:30:09,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:09,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:09,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:09,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:09,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:09,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:09,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:09,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:09,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:09,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-13 23:30:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:09,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:09,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:09,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:09,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:09,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:09,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:09,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:09,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:09,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:09,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-13 23:30:09,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:09,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:09,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:09,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:09,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:09,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:09,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:09,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:09,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:09,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-13 23:30:09,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:09,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:09,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:09,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:09,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:09,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:09,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:09,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:09,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:09,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2020-10-13 23:30:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:09,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:09,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:09,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:09,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:09,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:09,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:09,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:09,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:09,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:09,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:09,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:09,186 INFO L134 CoverageAnalysis]: Checked inductivity of 2005 backedges. 14 proven. 1080 refuted. 0 times theorem prover too weak. 911 trivial. 0 not checked. [2020-10-13 23:30:09,186 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [17117427] [2020-10-13 23:30:09,186 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:09,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-13 23:30:09,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601012041] [2020-10-13 23:30:09,187 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-13 23:30:09,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:09,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-13 23:30:09,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-13 23:30:09,188 INFO L87 Difference]: Start difference. First operand 303 states and 359 transitions. Second operand 31 states. [2020-10-13 23:30:09,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:09,618 INFO L93 Difference]: Finished difference Result 558 states and 676 transitions. [2020-10-13 23:30:09,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-13 23:30:09,619 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 206 [2020-10-13 23:30:09,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:09,621 INFO L225 Difference]: With dead ends: 558 [2020-10-13 23:30:09,621 INFO L226 Difference]: Without dead ends: 316 [2020-10-13 23:30:09,623 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 17 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 23:30:09,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 316 states. [2020-10-13 23:30:09,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 316 to 311. [2020-10-13 23:30:09,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 311 states. [2020-10-13 23:30:09,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 311 states to 311 states and 369 transitions. [2020-10-13 23:30:09,642 INFO L78 Accepts]: Start accepts. Automaton has 311 states and 369 transitions. Word has length 206 [2020-10-13 23:30:09,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:09,642 INFO L479 AbstractCegarLoop]: Abstraction has 311 states and 369 transitions. [2020-10-13 23:30:09,642 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-13 23:30:09,642 INFO L276 IsEmpty]: Start isEmpty. Operand 311 states and 369 transitions. [2020-10-13 23:30:09,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2020-10-13 23:30:09,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:09,644 INFO L422 BasicCegarLoop]: trace histogram [28, 28, 28, 28, 27, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:09,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-13 23:30:09,644 INFO L427 AbstractCegarLoop]: === Iteration 47 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:09,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:09,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1403711118, now seen corresponding path program 29 times [2020-10-13 23:30:09,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:09,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1504274609] [2020-10-13 23:30:09,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:09,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:09,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:09,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:14,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:14,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 233 [2020-10-13 23:30:14,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-13 23:30:14,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-13 23:30:14,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:14,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-13 23:30:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-13 23:30:14,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-13 23:30:14,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:15,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-13 23:30:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:15,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:15,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-13 23:30:15,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:15,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-13 23:30:15,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:15,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:15,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:15,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-13 23:30:15,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:15,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:15,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-13 23:30:15,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:15,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:15,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:15,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:15,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:15,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:15,262 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:15,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:15,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:15,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-13 23:30:15,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:15,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:15,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:15,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:15,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:15,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:15,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:15,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:15,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:15,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-13 23:30:15,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:15,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:15,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:15,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:15,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:15,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:15,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-13 23:30:15,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:15,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:15,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:15,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:15,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:15,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:15,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:15,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:15,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:15,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:15,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-13 23:30:15,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:15,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:15,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:15,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:15,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:15,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:15,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:15,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:15,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:15,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2020-10-13 23:30:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:15,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:15,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:15,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:15,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:15,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:15,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:15,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:15,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:15,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:15,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:15,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2020-10-13 23:30:15,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:15,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-13 23:30:15,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-13 23:30:15,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-13 23:30:15,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-13 23:30:15,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-13 23:30:15,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-13 23:30:15,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-13 23:30:15,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-13 23:30:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-13 23:30:15,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-13 23:30:15,327 INFO L134 CoverageAnalysis]: Checked inductivity of 2142 backedges. 14 proven. 1162 refuted. 0 times theorem prover too weak. 966 trivial. 0 not checked. [2020-10-13 23:30:15,328 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1504274609] [2020-10-13 23:30:15,328 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-13 23:30:15,328 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-13 23:30:15,328 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027434597] [2020-10-13 23:30:15,328 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-13 23:30:15,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-13 23:30:15,329 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-13 23:30:15,329 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:30:15,329 INFO L87 Difference]: Start difference. First operand 311 states and 369 transitions. Second operand 32 states. [2020-10-13 23:30:15,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-13 23:30:15,762 INFO L93 Difference]: Finished difference Result 572 states and 694 transitions. [2020-10-13 23:30:15,762 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-13 23:30:15,762 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 211 [2020-10-13 23:30:15,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-13 23:30:15,764 INFO L225 Difference]: With dead ends: 572 [2020-10-13 23:30:15,765 INFO L226 Difference]: Without dead ends: 324 [2020-10-13 23:30:15,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-13 23:30:15,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-13 23:30:15,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 319. [2020-10-13 23:30:15,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-13 23:30:15,785 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 379 transitions. [2020-10-13 23:30:15,786 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 379 transitions. Word has length 211 [2020-10-13 23:30:15,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-13 23:30:15,786 INFO L479 AbstractCegarLoop]: Abstraction has 319 states and 379 transitions. [2020-10-13 23:30:15,786 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-13 23:30:15,786 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 379 transitions. [2020-10-13 23:30:15,788 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-13 23:30:15,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-13 23:30:15,788 INFO L422 BasicCegarLoop]: trace histogram [29, 29, 29, 29, 28, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-13 23:30:15,788 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-13 23:30:15,788 INFO L427 AbstractCegarLoop]: === Iteration 48 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-13 23:30:15,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-13 23:30:15,789 INFO L82 PathProgramCache]: Analyzing trace with hash 881131705, now seen corresponding path program 30 times [2020-10-13 23:30:15,789 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-13 23:30:15,789 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [164075274] [2020-10-13 23:30:15,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-13 23:30:15,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-13 23:30:15,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-13 23:30:15,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking...