/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 SingleStatement --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:02:53,311 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:02:53,315 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:02:53,341 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:02:53,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:02:53,343 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:02:53,345 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:02:53,347 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:02:53,349 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:02:53,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:02:53,351 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:02:53,352 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:02:53,353 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:02:53,354 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:02:53,355 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:02:53,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:02:53,358 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:02:53,359 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:02:53,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:02:53,363 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:02:53,365 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:02:53,366 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:02:53,367 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:02:53,368 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:02:53,371 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:02:53,372 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:02:53,372 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:02:53,373 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:02:53,373 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:02:53,375 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:02:53,375 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:02:53,376 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:02:53,377 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:02:53,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:02:53,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:02:53,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:02:53,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:02:53,381 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:02:53,381 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:02:53,382 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:02:53,383 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:02:53,384 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 [2020-09-25 00:02:53,418 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:02:53,419 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:02:53,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:02:53,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:02:53,421 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:02:53,421 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:02:53,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:02:53,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:02:53,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:02:53,422 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:02:53,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:02:53,422 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:02:53,422 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:02:53,422 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:02:53,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:02:53,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:02:53,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:02:53,423 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:02:53,423 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:02:53,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:02:53,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:02:53,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:02:53,424 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:02:53,424 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:02:53,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:02:53,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:02:53,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:02:53,425 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:02:53,425 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:02:53,426 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 -> SingleStatement 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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=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=SHALLOWEST;log-additional-information=true; [2020-09-25 00:02:53,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:02:53,982 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:02:53,987 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:02:53,989 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:02:53,989 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:02:53,991 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 00:02:54,090 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18dd93af9/6353992fddff4a578feb1e5704b79fbd/FLAGde86141b6 [2020-09-25 00:02:54,656 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:02:54,657 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-25 00:02:54,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18dd93af9/6353992fddff4a578feb1e5704b79fbd/FLAGde86141b6 [2020-09-25 00:02:54,987 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/18dd93af9/6353992fddff4a578feb1e5704b79fbd [2020-09-25 00:02:55,002 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:02:55,010 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:02:55,011 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:02:55,011 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:02:55,016 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:02:55,017 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:02:54" (1/1) ... [2020-09-25 00:02:55,022 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cbfe068 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55, skipping insertion in model container [2020-09-25 00:02:55,022 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:02:54" (1/1) ... [2020-09-25 00:02:55,032 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:02:55,061 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:02:55,301 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:02:55,316 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:02:55,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:02:55,459 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:02:55,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55 WrapperNode [2020-09-25 00:02:55,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:02:55,460 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:02:55,461 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:02:55,461 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:02:55,477 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55" (1/1) ... [2020-09-25 00:02:55,478 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55" (1/1) ... [2020-09-25 00:02:55,489 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55" (1/1) ... [2020-09-25 00:02:55,490 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55" (1/1) ... [2020-09-25 00:02:55,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55" (1/1) ... [2020-09-25 00:02:55,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55" (1/1) ... [2020-09-25 00:02:55,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55" (1/1) ... [2020-09-25 00:02:55,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:02:55,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:02:55,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:02:55,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:02:55,519 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55" (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 [2020-09-25 00:02:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:02:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:02:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:02:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-25 00:02:55,605 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-25 00:02:55,606 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:02:55,606 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:02:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:02:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:02:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-25 00:02:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:02:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-25 00:02:55,607 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:02:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:02:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:02:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:02:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:02:55,608 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:02:56,137 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:02:56,137 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-25 00:02:56,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:56 BoogieIcfgContainer [2020-09-25 00:02:56,145 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:02:56,146 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:02:56,147 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:02:56,150 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:02:56,151 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:02:54" (1/3) ... [2020-09-25 00:02:56,151 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4315bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:02:56, skipping insertion in model container [2020-09-25 00:02:56,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:02:55" (2/3) ... [2020-09-25 00:02:56,152 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4315bf98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:02:56, skipping insertion in model container [2020-09-25 00:02:56,152 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:02:56" (3/3) ... [2020-09-25 00:02:56,155 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-25 00:02:56,167 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:02:56,178 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:02:56,199 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:02:56,232 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:02:56,232 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:02:56,232 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:02:56,232 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:02:56,233 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:02:56,233 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:02:56,233 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:02:56,233 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:02:56,258 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-25 00:02:56,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-25 00:02:56,266 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:02:56,267 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:02:56,267 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:02:56,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:02:56,274 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-25 00:02:56,283 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:02:56,284 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1287864233] [2020-09-25 00:02:56,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:02:56,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:02:56,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:02:56,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:02:56,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:02:56,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:02:56,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:02:56,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:02:56,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-25 00:02:56,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:02:56,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:02:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:02:56,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:02:56,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 00:02:57,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:02:57,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:02:57,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:02:57,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:02:57,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:02:57,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:02:57,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:02:57,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:02:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:02:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:02:57,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:02:57,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:02:57,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:02:57,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1287864233] [2020-09-25 00:02:57,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:02:57,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:02:57,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667028428] [2020-09-25 00:02:57,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:02:57,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:02:57,106 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:02:57,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:02:57,110 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 5 states. [2020-09-25 00:02:57,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:02:57,555 INFO L93 Difference]: Finished difference Result 266 states and 324 transitions. [2020-09-25 00:02:57,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:02:57,557 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-09-25 00:02:57,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:02:57,572 INFO L225 Difference]: With dead ends: 266 [2020-09-25 00:02:57,572 INFO L226 Difference]: Without dead ends: 135 [2020-09-25 00:02:57,578 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:02:57,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-25 00:02:57,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-09-25 00:02:57,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-25 00:02:57,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2020-09-25 00:02:57,642 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 23 [2020-09-25 00:02:57,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:02:57,643 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2020-09-25 00:02:57,643 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:02:57,644 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2020-09-25 00:02:57,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 00:02:57,648 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:02:57,648 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:02:57,648 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:02:57,649 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:02:57,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:02:57,649 INFO L82 PathProgramCache]: Analyzing trace with hash 23578911, now seen corresponding path program 1 times [2020-09-25 00:02:57,650 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:02:57,650 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1185615249] [2020-09-25 00:02:57,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:02:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:02:57,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:02:57,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:02:57,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:02:57,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:02:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:02:58,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:02,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:02,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 00:03:02,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:03:02,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:03:02,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:03:02,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:03:02,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 00:03:02,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:02,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:02,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:02,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:02,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:02,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:02,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:02,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:03:02,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:02,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:02,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:02,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:02,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:03:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:02,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:02,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:02,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:02,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:02,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:03:02,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 00:03:02,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:02,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:02,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:02,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:03:02,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:02,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 00:03:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:02,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:02,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:02,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:02,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:02,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 00:03:02,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:02,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:03:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:02,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:03:02,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:02,909 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:02,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1185615249] [2020-09-25 00:03:02,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:02,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 00:03:02,911 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516632421] [2020-09-25 00:03:02,913 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:03:02,913 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:02,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:03:02,914 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:03:02,914 INFO L87 Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 11 states. [2020-09-25 00:03:03,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:03,917 INFO L93 Difference]: Finished difference Result 341 states and 389 transitions. [2020-09-25 00:03:03,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 00:03:03,918 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 59 [2020-09-25 00:03:03,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:03,924 INFO L225 Difference]: With dead ends: 341 [2020-09-25 00:03:03,924 INFO L226 Difference]: Without dead ends: 263 [2020-09-25 00:03:03,926 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=102, Invalid=498, Unknown=0, NotChecked=0, Total=600 [2020-09-25 00:03:03,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-25 00:03:03,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 162. [2020-09-25 00:03:03,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-25 00:03:03,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 182 transitions. [2020-09-25 00:03:03,949 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 182 transitions. Word has length 59 [2020-09-25 00:03:03,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:03,950 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 182 transitions. [2020-09-25 00:03:03,950 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:03:03,950 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 182 transitions. [2020-09-25 00:03:03,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 00:03:03,953 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:03,953 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:03,953 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:03:03,953 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:03,954 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:03,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1272166002, now seen corresponding path program 1 times [2020-09-25 00:03:03,954 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:03,955 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235802656] [2020-09-25 00:03:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:03,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:03,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:04,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:04,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:04,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:05,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:05,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:05,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:05,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:08,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:08,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 00:03:08,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 00:03:08,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:03:08,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:08,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 00:03:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:03:08,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 00:03:08,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:09,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:09,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:09,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:09,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:09,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:09,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:03:09,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:09,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:09,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:09,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:09,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:03:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:09,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:09,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:09,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:09,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:09,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:03:09,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:09,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:09,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:03:09,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:09,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 00:03:09,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:09,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:09,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:09,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:09,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:09,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 00:03:09,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:03:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:09,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:03:09,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:09,220 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:09,221 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235802656] [2020-09-25 00:03:09,221 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:09,221 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:03:09,222 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431187802] [2020-09-25 00:03:09,222 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:03:09,223 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:09,223 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:03:09,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:03:09,224 INFO L87 Difference]: Start difference. First operand 162 states and 182 transitions. Second operand 13 states. [2020-09-25 00:03:10,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:10,079 INFO L93 Difference]: Finished difference Result 317 states and 358 transitions. [2020-09-25 00:03:10,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:03:10,080 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 65 [2020-09-25 00:03:10,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:10,082 INFO L225 Difference]: With dead ends: 317 [2020-09-25 00:03:10,083 INFO L226 Difference]: Without dead ends: 207 [2020-09-25 00:03:10,085 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:03:10,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-09-25 00:03:10,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 152. [2020-09-25 00:03:10,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-09-25 00:03:10,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 169 transitions. [2020-09-25 00:03:10,108 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 169 transitions. Word has length 65 [2020-09-25 00:03:10,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:10,108 INFO L479 AbstractCegarLoop]: Abstraction has 152 states and 169 transitions. [2020-09-25 00:03:10,108 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:03:10,109 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 169 transitions. [2020-09-25 00:03:10,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 00:03:10,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:10,111 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:10,112 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:03:10,112 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:10,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:10,112 INFO L82 PathProgramCache]: Analyzing trace with hash -1668970121, now seen corresponding path program 1 times [2020-09-25 00:03:10,113 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:10,113 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [316813731] [2020-09-25 00:03:10,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:10,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:10,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:10,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:10,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:10,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:10,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:15,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:15,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-25 00:03:15,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:03:15,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 00:03:15,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:15,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:03:15,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:03:15,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 00:03:15,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:15,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:15,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:15,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:15,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:15,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:15,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:15,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:03:15,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:15,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:15,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:03:15,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:15,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:15,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:15,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:15,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:15,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:03:15,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:15,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:03:15,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:15,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 00:03:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:15,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:15,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:15,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:15,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:15,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 00:03:15,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:15,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:03:15,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:15,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:03:15,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 13 [2020-09-25 00:03:15,330 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 00:03:15,331 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [316813731] [2020-09-25 00:03:15,331 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:15,332 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-25 00:03:15,332 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070818837] [2020-09-25 00:03:15,333 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:03:15,333 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:15,333 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:03:15,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:03:15,335 INFO L87 Difference]: Start difference. First operand 152 states and 169 transitions. Second operand 10 states. [2020-09-25 00:03:15,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:15,896 INFO L93 Difference]: Finished difference Result 282 states and 317 transitions. [2020-09-25 00:03:15,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 00:03:15,897 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-25 00:03:15,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:15,898 INFO L225 Difference]: With dead ends: 282 [2020-09-25 00:03:15,901 INFO L226 Difference]: Without dead ends: 182 [2020-09-25 00:03:15,902 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=277, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:03:15,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2020-09-25 00:03:15,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 153. [2020-09-25 00:03:15,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2020-09-25 00:03:15,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 169 transitions. [2020-09-25 00:03:15,926 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 169 transitions. Word has length 71 [2020-09-25 00:03:15,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:15,927 INFO L479 AbstractCegarLoop]: Abstraction has 153 states and 169 transitions. [2020-09-25 00:03:15,929 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:03:15,929 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 169 transitions. [2020-09-25 00:03:15,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-25 00:03:15,930 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:15,930 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:15,931 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:03:15,931 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:15,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:15,931 INFO L82 PathProgramCache]: Analyzing trace with hash 928635750, now seen corresponding path program 1 times [2020-09-25 00:03:15,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:15,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [732597330] [2020-09-25 00:03:15,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:15,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:15,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:15,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:16,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:16,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:16,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:16,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:16,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:17,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:20,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:20,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 00:03:20,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:03:20,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:03:20,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:03:20,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:03:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 00:03:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:21,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:21,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:21,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:21,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:21,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:21,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:21,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:21,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:21,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:21,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:21,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:21,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:03:21,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:21,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:21,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:21,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:21,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:21,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:03:21,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:21,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:21,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:03:21,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:21,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 00:03:21,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:21,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:21,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:21,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:21,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:21,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:03:21,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:03:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:21,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:03:21,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:21,153 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 00:03:21,154 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [732597330] [2020-09-25 00:03:21,154 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:21,154 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:03:21,154 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588419193] [2020-09-25 00:03:21,156 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:03:21,157 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:21,157 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:03:21,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:03:21,157 INFO L87 Difference]: Start difference. First operand 153 states and 169 transitions. Second operand 12 states. [2020-09-25 00:03:21,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:21,900 INFO L93 Difference]: Finished difference Result 216 states and 239 transitions. [2020-09-25 00:03:21,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:03:21,901 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-09-25 00:03:21,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:21,903 INFO L225 Difference]: With dead ends: 216 [2020-09-25 00:03:21,903 INFO L226 Difference]: Without dead ends: 188 [2020-09-25 00:03:21,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=532, Unknown=0, NotChecked=0, Total=650 [2020-09-25 00:03:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-09-25 00:03:21,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 149. [2020-09-25 00:03:21,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-09-25 00:03:21,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 164 transitions. [2020-09-25 00:03:21,914 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 164 transitions. Word has length 77 [2020-09-25 00:03:21,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:21,914 INFO L479 AbstractCegarLoop]: Abstraction has 149 states and 164 transitions. [2020-09-25 00:03:21,914 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:03:21,914 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 164 transitions. [2020-09-25 00:03:21,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 00:03:21,916 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:21,916 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:21,917 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:03:21,917 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:21,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:21,917 INFO L82 PathProgramCache]: Analyzing trace with hash 864486983, now seen corresponding path program 1 times [2020-09-25 00:03:21,918 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:21,918 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448445262] [2020-09-25 00:03:21,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:21,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:21,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:21,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:21,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:22,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:23,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:26,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:26,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-09-25 00:03:26,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:03:26,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:03:26,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:26,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:03:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 00:03:26,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 00:03:26,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:26,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:26,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:26,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:26,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:27,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:27,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:27,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:03:27,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:27,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:27,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:27,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:27,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:27,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:03:27,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:27,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:27,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:27,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:27,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:27,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:03:27,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:27,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:27,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 00:03:27,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:27,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 00:03:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:27,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:27,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:27,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:27,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:27,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 00:03:27,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:03:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:27,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:03:27,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:27,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 00:03:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:27,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:27,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:27,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:27,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:27,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:03:27,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:27,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:03:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:03:27,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 00:03:27,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:27,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-09-25 00:03:27,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:27,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:27,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:27,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:27,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:27,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:03:27,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:27,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:27,217 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 00:03:27,217 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448445262] [2020-09-25 00:03:27,217 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:27,217 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:03:27,218 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078836113] [2020-09-25 00:03:27,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:03:27,218 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:27,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:03:27,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:03:27,219 INFO L87 Difference]: Start difference. First operand 149 states and 164 transitions. Second operand 12 states. [2020-09-25 00:03:28,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:28,062 INFO L93 Difference]: Finished difference Result 316 states and 355 transitions. [2020-09-25 00:03:28,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 00:03:28,062 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 99 [2020-09-25 00:03:28,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:28,066 INFO L225 Difference]: With dead ends: 316 [2020-09-25 00:03:28,066 INFO L226 Difference]: Without dead ends: 219 [2020-09-25 00:03:28,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2020-09-25 00:03:28,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 219 states. [2020-09-25 00:03:28,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 219 to 171. [2020-09-25 00:03:28,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-09-25 00:03:28,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 190 transitions. [2020-09-25 00:03:28,076 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 190 transitions. Word has length 99 [2020-09-25 00:03:28,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:28,077 INFO L479 AbstractCegarLoop]: Abstraction has 171 states and 190 transitions. [2020-09-25 00:03:28,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:03:28,077 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 190 transitions. [2020-09-25 00:03:28,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 00:03:28,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:28,078 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:28,078 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:03:28,079 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:28,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:28,079 INFO L82 PathProgramCache]: Analyzing trace with hash -537710077, now seen corresponding path program 1 times [2020-09-25 00:03:28,079 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:28,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1492757685] [2020-09-25 00:03:28,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:28,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:28,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 00:03:28,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:03:28,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 577 [2020-09-25 00:03:28,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:28,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:28,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 00:03:28,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:28,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:28,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:28,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:28,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:28,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:28,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:03:28,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:28,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:28,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:28,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:28,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-25 00:03:28,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:28,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:28,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:28,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:28,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:03:28,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:03:28,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:28,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:28,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-25 00:03:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:28,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:28,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:28,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:28,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:28,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:28,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:28,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:28,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:28,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-25 00:03:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:28,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 00:03:28,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:28,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:03:28,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:28,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:03:28,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:28,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:28,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-25 00:03:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:28,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:28,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:28,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:28,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:28,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:28,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:28,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:28,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:28,812 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 00:03:28,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1492757685] [2020-09-25 00:03:28,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:28,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:03:28,814 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339002811] [2020-09-25 00:03:28,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:03:28,815 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:28,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:03:28,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:03:28,816 INFO L87 Difference]: Start difference. First operand 171 states and 190 transitions. Second operand 5 states. [2020-09-25 00:03:29,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:29,162 INFO L93 Difference]: Finished difference Result 355 states and 397 transitions. [2020-09-25 00:03:29,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:03:29,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-09-25 00:03:29,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:29,164 INFO L225 Difference]: With dead ends: 355 [2020-09-25 00:03:29,164 INFO L226 Difference]: Without dead ends: 203 [2020-09-25 00:03:29,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:03:29,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2020-09-25 00:03:29,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 172. [2020-09-25 00:03:29,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-09-25 00:03:29,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 191 transitions. [2020-09-25 00:03:29,177 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 191 transitions. Word has length 102 [2020-09-25 00:03:29,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:29,178 INFO L479 AbstractCegarLoop]: Abstraction has 172 states and 191 transitions. [2020-09-25 00:03:29,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:03:29,178 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 191 transitions. [2020-09-25 00:03:29,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-25 00:03:29,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:29,180 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:29,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:03:29,180 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:29,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:29,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1892707860, now seen corresponding path program 1 times [2020-09-25 00:03:29,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:29,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [849085035] [2020-09-25 00:03:29,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:29,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:29,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:29,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:30,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-25 00:03:30,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:03:30,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1121 [2020-09-25 00:03:30,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:03:30,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:30,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:03:30,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:30,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:30,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:30,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:30,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:30,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:30,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:03:30,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:30,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:30,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:30,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:30,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 00:03:30,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:30,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:30,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:30,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:30,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:03:30,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:03:30,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:30,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:30,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-25 00:03:30,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:30,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:30,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:30,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:30,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:30,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:30,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:30,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:30,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-25 00:03:30,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:30,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:30,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 00:03:30,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:30,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:03:30,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:03:30,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:30,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:30,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-25 00:03:30,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:30,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:30,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:30,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:30,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:30,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:30,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:30,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:30,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:30,450 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 00:03:30,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [849085035] [2020-09-25 00:03:30,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:30,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:03:30,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051935050] [2020-09-25 00:03:30,452 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:03:30,452 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:30,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:03:30,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:03:30,453 INFO L87 Difference]: Start difference. First operand 172 states and 191 transitions. Second operand 7 states. [2020-09-25 00:03:30,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:30,794 INFO L93 Difference]: Finished difference Result 362 states and 404 transitions. [2020-09-25 00:03:30,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:03:30,794 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-25 00:03:30,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:30,796 INFO L225 Difference]: With dead ends: 362 [2020-09-25 00:03:30,796 INFO L226 Difference]: Without dead ends: 210 [2020-09-25 00:03:30,799 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:03:30,799 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2020-09-25 00:03:30,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 179. [2020-09-25 00:03:30,814 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-25 00:03:30,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 198 transitions. [2020-09-25 00:03:30,816 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 198 transitions. Word has length 109 [2020-09-25 00:03:30,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:30,816 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 198 transitions. [2020-09-25 00:03:30,817 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:03:30,817 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 198 transitions. [2020-09-25 00:03:30,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-25 00:03:30,819 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:30,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:30,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:03:30,820 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:30,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:30,821 INFO L82 PathProgramCache]: Analyzing trace with hash 1238084835, now seen corresponding path program 2 times [2020-09-25 00:03:30,822 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:30,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519418665] [2020-09-25 00:03:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:30,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:30,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:32,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 00:03:32,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:03:32,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1447 [2020-09-25 00:03:32,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:03:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:32,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 00:03:32,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:32,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:32,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:32,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:32,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:32,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:32,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 00:03:32,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:32,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:32,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:32,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-25 00:03:32,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:32,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:32,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:32,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:32,348 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:03:32,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:03:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:32,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:32,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-25 00:03:32,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:32,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:32,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:32,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:32,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:32,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:32,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:32,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:32,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-25 00:03:32,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:32,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:32,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 00:03:32,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:32,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:03:32,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:32,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:03:32,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:32,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:32,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-25 00:03:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:32,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:32,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:32,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:32,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:03:32,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:32,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:32,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:32,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:32,421 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 00:03:32,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519418665] [2020-09-25 00:03:32,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:32,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:03:32,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371208961] [2020-09-25 00:03:32,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:03:32,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:32,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:03:32,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:03:32,425 INFO L87 Difference]: Start difference. First operand 179 states and 198 transitions. Second operand 9 states. [2020-09-25 00:03:32,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:32,988 INFO L93 Difference]: Finished difference Result 369 states and 411 transitions. [2020-09-25 00:03:32,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 00:03:32,989 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-09-25 00:03:32,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:32,991 INFO L225 Difference]: With dead ends: 369 [2020-09-25 00:03:32,991 INFO L226 Difference]: Without dead ends: 217 [2020-09-25 00:03:32,992 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-25 00:03:32,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-09-25 00:03:33,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 186. [2020-09-25 00:03:33,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 186 states. [2020-09-25 00:03:33,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 186 states to 186 states and 205 transitions. [2020-09-25 00:03:33,006 INFO L78 Accepts]: Start accepts. Automaton has 186 states and 205 transitions. Word has length 116 [2020-09-25 00:03:33,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:33,007 INFO L479 AbstractCegarLoop]: Abstraction has 186 states and 205 transitions. [2020-09-25 00:03:33,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:03:33,007 INFO L276 IsEmpty]: Start isEmpty. Operand 186 states and 205 transitions. [2020-09-25 00:03:33,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 00:03:33,009 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:33,009 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:33,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:03:33,009 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:33,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:33,010 INFO L82 PathProgramCache]: Analyzing trace with hash -127797452, now seen corresponding path program 3 times [2020-09-25 00:03:33,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:33,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [785013988] [2020-09-25 00:03:33,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:33,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:33,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:33,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:33,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:35,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:35,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-25 00:03:35,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:03:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2160 [2020-09-25 00:03:35,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:03:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:35,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:03:35,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:35,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:35,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:35,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:35,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:35,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:35,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:03:35,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:35,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:35,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:35,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:35,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 00:03:35,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:35,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:35,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:35,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:35,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:35,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:03:35,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:35,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:35,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:03:35,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:35,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:35,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-25 00:03:35,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:35,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:35,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:35,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:35,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:35,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:35,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:35,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:35,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:35,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-25 00:03:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:35,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:35,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:35,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 00:03:35,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:35,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:03:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:35,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:35,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-25 00:03:35,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:35,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:35,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:35,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:35,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:35,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:35,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:35,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:35,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:35,359 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 00:03:35,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [785013988] [2020-09-25 00:03:35,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:35,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 00:03:35,360 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618361823] [2020-09-25 00:03:35,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 00:03:35,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:35,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 00:03:35,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 00:03:35,362 INFO L87 Difference]: Start difference. First operand 186 states and 205 transitions. Second operand 11 states. [2020-09-25 00:03:35,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:35,840 INFO L93 Difference]: Finished difference Result 376 states and 418 transitions. [2020-09-25 00:03:35,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 00:03:35,841 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-09-25 00:03:35,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:35,842 INFO L225 Difference]: With dead ends: 376 [2020-09-25 00:03:35,843 INFO L226 Difference]: Without dead ends: 224 [2020-09-25 00:03:35,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=249, Unknown=0, NotChecked=0, Total=342 [2020-09-25 00:03:35,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-09-25 00:03:35,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 193. [2020-09-25 00:03:35,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-09-25 00:03:35,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 212 transitions. [2020-09-25 00:03:35,859 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 212 transitions. Word has length 123 [2020-09-25 00:03:35,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:35,860 INFO L479 AbstractCegarLoop]: Abstraction has 193 states and 212 transitions. [2020-09-25 00:03:35,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 00:03:35,860 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 212 transitions. [2020-09-25 00:03:35,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-25 00:03:35,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:35,862 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:35,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 00:03:35,862 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:35,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:35,863 INFO L82 PathProgramCache]: Analyzing trace with hash -901537853, now seen corresponding path program 4 times [2020-09-25 00:03:35,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:35,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309137420] [2020-09-25 00:03:35,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:35,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:35,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:35,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:38,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:38,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-25 00:03:38,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:03:38,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3010 [2020-09-25 00:03:38,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:03:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:38,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:03:38,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:38,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:38,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:38,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:38,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:38,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:03:38,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:38,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:03:38,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:38,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:38,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:38,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:38,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:39,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-25 00:03:39,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:39,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:39,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-25 00:03:39,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:03:39,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 00:03:39,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:39,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:39,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-25 00:03:39,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:39,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:39,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:39,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:39,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:03:39,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:39,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:39,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:39,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:39,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-25 00:03:39,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:39,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:39,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:39,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 00:03:39,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:39,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:03:39,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 00:03:39,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:39,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:39,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-25 00:03:39,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:39,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:39,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 00:03:39,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:39,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:03:39,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:39,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:39,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-25 00:03:39,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:39,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:39,062 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 00:03:39,062 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309137420] [2020-09-25 00:03:39,063 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:03:39,063 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 00:03:39,063 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541396137] [2020-09-25 00:03:39,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 00:03:39,064 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:39,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 00:03:39,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:03:39,064 INFO L87 Difference]: Start difference. First operand 193 states and 212 transitions. Second operand 13 states. [2020-09-25 00:03:39,635 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:39,635 INFO L93 Difference]: Finished difference Result 383 states and 425 transitions. [2020-09-25 00:03:39,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-25 00:03:39,636 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-09-25 00:03:39,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:39,638 INFO L225 Difference]: With dead ends: 383 [2020-09-25 00:03:39,638 INFO L226 Difference]: Without dead ends: 231 [2020-09-25 00:03:39,639 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:03:39,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-09-25 00:03:39,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 200. [2020-09-25 00:03:39,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-09-25 00:03:39,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 219 transitions. [2020-09-25 00:03:39,658 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 219 transitions. Word has length 130 [2020-09-25 00:03:39,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:39,658 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 219 transitions. [2020-09-25 00:03:39,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 00:03:39,658 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 219 transitions. [2020-09-25 00:03:39,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 00:03:39,660 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:39,660 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:39,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 00:03:39,661 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:39,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:39,661 INFO L82 PathProgramCache]: Analyzing trace with hash 360515668, now seen corresponding path program 5 times [2020-09-25 00:03:39,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:39,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098605079] [2020-09-25 00:03:39,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:39,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:39,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:39,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:39,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking...