/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=LOWLEXORDER --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 [2020-09-24 21:48:49,404 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:48:49,408 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:48:49,434 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:48:49,434 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:48:49,435 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:48:49,436 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:48:49,438 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:48:49,440 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:48:49,441 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:48:49,442 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:48:49,443 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:48:49,443 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:48:49,444 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:48:49,445 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:48:49,447 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:48:49,448 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:48:49,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:48:49,450 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:48:49,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:48:49,454 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:48:49,455 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:48:49,456 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:48:49,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:48:49,460 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:48:49,460 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:48:49,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:48:49,461 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:48:49,462 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:48:49,463 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:48:49,463 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:48:49,464 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:48:49,465 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:48:49,467 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:48:49,468 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:48:49,468 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:48:49,469 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:48:49,469 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:48:49,469 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:48:49,471 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:48:49,472 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:48:49,473 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 [2020-09-24 21:48:49,499 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:48:49,500 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:48:49,501 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:48:49,501 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:48:49,501 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:48:49,502 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:48:49,502 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:48:49,502 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:48:49,502 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:48:49,502 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:48:49,503 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:48:49,503 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:48:49,503 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:48:49,503 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:48:49,503 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:48:49,504 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:48:49,504 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:48:49,504 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:48:49,504 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:48:49,504 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:48:49,505 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:48:49,505 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:48:49,505 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:48:49,505 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:48:49,505 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:48:49,506 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:48:49,506 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:48:49,506 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:48:49,506 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:48:49,507 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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;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=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:48:49,972 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:48:49,991 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:48:49,995 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:48:49,997 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:48:49,998 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:48:49,999 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 21:48:50,099 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39f2c91f/8e309048d68b4f83a5199166f255ec9d/FLAGda737d126 [2020-09-24 21:48:50,663 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:48:50,663 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/data_structures_set_multi_proc_trivial_ground.i [2020-09-24 21:48:50,672 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39f2c91f/8e309048d68b4f83a5199166f255ec9d/FLAGda737d126 [2020-09-24 21:48:50,992 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d39f2c91f/8e309048d68b4f83a5199166f255ec9d [2020-09-24 21:48:51,006 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:48:51,012 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:48:51,013 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:48:51,013 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:48:51,019 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:48:51,020 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:48:50" (1/1) ... [2020-09-24 21:48:51,026 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51, skipping insertion in model container [2020-09-24 21:48:51,026 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:48:50" (1/1) ... [2020-09-24 21:48:51,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:48:51,072 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:48:51,311 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:48:51,323 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:48:51,363 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:48:51,491 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:48:51,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51 WrapperNode [2020-09-24 21:48:51,493 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:48:51,494 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:48:51,494 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:48:51,494 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:48:51,508 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51" (1/1) ... [2020-09-24 21:48:51,508 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51" (1/1) ... [2020-09-24 21:48:51,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51" (1/1) ... [2020-09-24 21:48:51,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51" (1/1) ... [2020-09-24 21:48:51,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51" (1/1) ... [2020-09-24 21:48:51,541 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51" (1/1) ... [2020-09-24 21:48:51,543 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51" (1/1) ... [2020-09-24 21:48:51,547 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:48:51,547 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:48:51,548 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:48:51,548 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:48:51,549 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51" (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 [2020-09-24 21:48:51,634 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:48:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:48:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:48:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure insert [2020-09-24 21:48:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure elem_exists [2020-09-24 21:48:51,635 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:48:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:48:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:48:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:48:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure insert [2020-09-24 21:48:51,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:48:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure elem_exists [2020-09-24 21:48:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:48:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:48:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:48:51,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:48:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:48:51,638 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:48:52,117 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:48:52,117 INFO L295 CfgBuilder]: Removed 10 assume(true) statements. [2020-09-24 21:48:52,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:48:52 BoogieIcfgContainer [2020-09-24 21:48:52,125 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:48:52,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:48:52,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:48:52,130 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:48:52,130 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:48:50" (1/3) ... [2020-09-24 21:48:52,131 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681c229e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:48:52, skipping insertion in model container [2020-09-24 21:48:52,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:51" (2/3) ... [2020-09-24 21:48:52,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@681c229e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:48:52, skipping insertion in model container [2020-09-24 21:48:52,132 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:48:52" (3/3) ... [2020-09-24 21:48:52,134 INFO L109 eAbstractionObserver]: Analyzing ICFG data_structures_set_multi_proc_trivial_ground.i [2020-09-24 21:48:52,146 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:48:52,158 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:48:52,179 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:48:52,209 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:48:52,209 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:48:52,210 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:48:52,210 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:48:52,210 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:48:52,210 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:48:52,210 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:48:52,210 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:48:52,236 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states. [2020-09-24 21:48:52,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 21:48:52,243 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:48:52,244 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] [2020-09-24 21:48:52,245 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:48:52,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:48:52,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1588916751, now seen corresponding path program 1 times [2020-09-24 21:48:52,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:48:52,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066863868] [2020-09-24 21:48:52,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:48:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:52,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:52,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:52,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:52,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:52,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:48:52,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:48:52,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 568 [2020-09-24 21:48:52,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:48:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:48:52,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:48:52,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:48:53,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:48:53,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:53,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:53,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:53,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:48:53,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:48:53,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:48:53,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:48:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:53,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:48:53,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:53,080 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:48:53,081 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066863868] [2020-09-24 21:48:53,083 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:48:53,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:48:53,084 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958129067] [2020-09-24 21:48:53,090 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:48:53,090 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:48:53,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:48:53,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:48:53,112 INFO L87 Difference]: Start difference. First operand 132 states. Second operand 5 states. [2020-09-24 21:48:53,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:48:53,625 INFO L93 Difference]: Finished difference Result 266 states and 324 transitions. [2020-09-24 21:48:53,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:48:53,628 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-09-24 21:48:53,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:48:53,643 INFO L225 Difference]: With dead ends: 266 [2020-09-24 21:48:53,643 INFO L226 Difference]: Without dead ends: 135 [2020-09-24 21:48:53,649 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 [2020-09-24 21:48:53,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-09-24 21:48:53,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 122. [2020-09-24 21:48:53,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-09-24 21:48:53,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 134 transitions. [2020-09-24 21:48:53,722 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 134 transitions. Word has length 23 [2020-09-24 21:48:53,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:48:53,723 INFO L479 AbstractCegarLoop]: Abstraction has 122 states and 134 transitions. [2020-09-24 21:48:53,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:48:53,723 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 134 transitions. [2020-09-24 21:48:53,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 21:48:53,728 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:48:53,728 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] [2020-09-24 21:48:53,729 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:48:53,729 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:48:53,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:48:53,729 INFO L82 PathProgramCache]: Analyzing trace with hash 23578911, now seen corresponding path program 1 times [2020-09-24 21:48:53,730 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:48:53,730 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [658406168] [2020-09-24 21:48:53,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:48:53,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:53,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:53,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:54,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:54,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:54,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:58,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:58,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-24 21:48:58,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:48:58,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 21:48:58,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:58,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:48:58,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:48:58,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:48:58,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:58,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:48:58,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:58,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:58,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:58,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:48:58,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:48:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:48:58,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:48:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:48:58,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:58,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 21:48:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:58,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:58,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:58,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:58,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:48:58,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:48:58,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 21:48:58,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:58,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:48:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:58,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:48:58,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:58,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 21:48:58,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:58,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:58,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:58,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:48:58,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:48:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 21:48:58,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:58,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:48:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:58,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:48:58,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:59,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:48:59,039 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [658406168] [2020-09-24 21:48:59,039 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:48:59,040 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-24 21:48:59,040 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152490095] [2020-09-24 21:48:59,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 21:48:59,043 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:48:59,043 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 21:48:59,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-09-24 21:48:59,044 INFO L87 Difference]: Start difference. First operand 122 states and 134 transitions. Second operand 14 states. [2020-09-24 21:49:00,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:00,754 INFO L93 Difference]: Finished difference Result 444 states and 522 transitions. [2020-09-24 21:49:00,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-24 21:49:00,755 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 59 [2020-09-24 21:49:00,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:00,762 INFO L225 Difference]: With dead ends: 444 [2020-09-24 21:49:00,763 INFO L226 Difference]: Without dead ends: 366 [2020-09-24 21:49:00,766 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 221 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=183, Invalid=1077, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 21:49:00,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 366 states. [2020-09-24 21:49:00,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 366 to 212. [2020-09-24 21:49:00,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 212 states. [2020-09-24 21:49:00,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 245 transitions. [2020-09-24 21:49:00,800 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 245 transitions. Word has length 59 [2020-09-24 21:49:00,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:00,801 INFO L479 AbstractCegarLoop]: Abstraction has 212 states and 245 transitions. [2020-09-24 21:49:00,801 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 21:49:00,801 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 245 transitions. [2020-09-24 21:49:00,804 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 21:49:00,804 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:00,804 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] [2020-09-24 21:49:00,804 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:49:00,805 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:00,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:00,805 INFO L82 PathProgramCache]: Analyzing trace with hash -1272166002, now seen corresponding path program 1 times [2020-09-24 21:49:00,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:00,806 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988149373] [2020-09-24 21:49:00,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:00,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:00,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:00,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:00,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:01,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:01,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:01,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:02,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:02,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:02,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:05,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:05,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 21:49:05,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:49:05,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:49:05,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:49:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:49:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 21:49:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:05,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:05,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:05,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:05,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:05,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:05,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:49:05,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:05,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:05,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:05,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:05,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 21:49:05,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:05,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:05,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:05,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:05,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:49:05,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 21:49:05,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:49:05,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:05,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:49:05,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:06,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 21:49:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:06,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:06,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:06,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:06,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:06,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 21:49:06,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:06,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:49:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:06,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:49:06,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:49:06,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:49:06,132 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [988149373] [2020-09-24 21:49:06,133 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:06,133 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-09-24 21:49:06,134 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [904770542] [2020-09-24 21:49:06,134 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:49:06,135 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:06,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:49:06,136 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:49:06,142 INFO L87 Difference]: Start difference. First operand 212 states and 245 transitions. Second operand 15 states. [2020-09-24 21:49:07,279 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:07,280 INFO L93 Difference]: Finished difference Result 420 states and 487 transitions. [2020-09-24 21:49:07,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-24 21:49:07,281 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 65 [2020-09-24 21:49:07,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:07,285 INFO L225 Difference]: With dead ends: 420 [2020-09-24 21:49:07,285 INFO L226 Difference]: Without dead ends: 250 [2020-09-24 21:49:07,292 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 184 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=163, Invalid=959, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 21:49:07,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-09-24 21:49:07,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 174. [2020-09-24 21:49:07,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-09-24 21:49:07,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 196 transitions. [2020-09-24 21:49:07,331 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 196 transitions. Word has length 65 [2020-09-24 21:49:07,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:07,334 INFO L479 AbstractCegarLoop]: Abstraction has 174 states and 196 transitions. [2020-09-24 21:49:07,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:49:07,335 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 196 transitions. [2020-09-24 21:49:07,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 21:49:07,346 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:07,346 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] [2020-09-24 21:49:07,346 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:49:07,347 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:07,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:07,347 INFO L82 PathProgramCache]: Analyzing trace with hash -1668970121, now seen corresponding path program 1 times [2020-09-24 21:49:07,347 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:07,348 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1645985860] [2020-09-24 21:49:07,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:07,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:07,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:07,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:07,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:12,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:12,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:12,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:12,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:12,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-09-24 21:49:12,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:49:12,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5031 [2020-09-24 21:49:12,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:49:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:49:12,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 21:49:12,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:12,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:12,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:12,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:12,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:12,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:12,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:12,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:12,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:12,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:12,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 21:49:12,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:12,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:12,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:12,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:12,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:12,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:49:12,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:12,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:12,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:12,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:49:12,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:12,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 21:49:12,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:12,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:12,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:12,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:12,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:12,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 21:49:12,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:49:12,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:12,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:49:12,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:12,607 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:49:12,609 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1645985860] [2020-09-24 21:49:12,609 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:12,610 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-24 21:49:12,610 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039200654] [2020-09-24 21:49:12,611 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:49:12,611 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:12,612 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:49:12,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:49:12,613 INFO L87 Difference]: Start difference. First operand 174 states and 196 transitions. Second operand 10 states. [2020-09-24 21:49:13,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:13,244 INFO L93 Difference]: Finished difference Result 358 states and 409 transitions. [2020-09-24 21:49:13,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 21:49:13,246 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 71 [2020-09-24 21:49:13,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:13,249 INFO L225 Difference]: With dead ends: 358 [2020-09-24 21:49:13,252 INFO L226 Difference]: Without dead ends: 212 [2020-09-24 21:49:13,253 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 [2020-09-24 21:49:13,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2020-09-24 21:49:13,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 177. [2020-09-24 21:49:13,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-24 21:49:13,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2020-09-24 21:49:13,280 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 71 [2020-09-24 21:49:13,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:13,282 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2020-09-24 21:49:13,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:49:13,283 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2020-09-24 21:49:13,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2020-09-24 21:49:13,284 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:13,284 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] [2020-09-24 21:49:13,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:49:13,285 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:13,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:13,285 INFO L82 PathProgramCache]: Analyzing trace with hash 928635750, now seen corresponding path program 1 times [2020-09-24 21:49:13,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:13,290 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1875724404] [2020-09-24 21:49:13,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:13,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:13,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:13,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:13,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:13,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:13,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:13,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:13,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:14,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:18,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:18,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 21:49:18,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 21:49:18,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 21:49:18,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:18,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:49:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-24 21:49:18,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-24 21:49:18,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:18,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:18,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:18,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:18,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:18,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:18,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:18,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:49:18,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:18,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:18,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:18,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:18,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 21:49:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:18,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:18,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:18,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:18,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:18,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:18,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:18,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:18,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-24 21:49:18,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:18,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 21:49:18,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:18,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:18,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:18,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:18,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 21:49:18,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:18,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:49:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:18,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:49:18,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:18,475 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:49:18,475 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1875724404] [2020-09-24 21:49:18,476 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:18,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 21:49:18,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586623412] [2020-09-24 21:49:18,477 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 21:49:18,477 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:18,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 21:49:18,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:49:18,478 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand 12 states. [2020-09-24 21:49:19,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:19,223 INFO L93 Difference]: Finished difference Result 279 states and 314 transitions. [2020-09-24 21:49:19,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 21:49:19,223 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 77 [2020-09-24 21:49:19,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:19,226 INFO L225 Difference]: With dead ends: 279 [2020-09-24 21:49:19,226 INFO L226 Difference]: Without dead ends: 251 [2020-09-24 21:49:19,227 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 [2020-09-24 21:49:19,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2020-09-24 21:49:19,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 203. [2020-09-24 21:49:19,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 203 states. [2020-09-24 21:49:19,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 203 states to 203 states and 228 transitions. [2020-09-24 21:49:19,241 INFO L78 Accepts]: Start accepts. Automaton has 203 states and 228 transitions. Word has length 77 [2020-09-24 21:49:19,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:19,242 INFO L479 AbstractCegarLoop]: Abstraction has 203 states and 228 transitions. [2020-09-24 21:49:19,242 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 21:49:19,242 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states and 228 transitions. [2020-09-24 21:49:19,243 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 21:49:19,244 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:19,244 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] [2020-09-24 21:49:19,244 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:49:19,245 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:19,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:19,245 INFO L82 PathProgramCache]: Analyzing trace with hash -537710077, now seen corresponding path program 1 times [2020-09-24 21:49:19,245 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:19,246 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255110931] [2020-09-24 21:49:19,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:19,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:19,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:19,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:19,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:19,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:19,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 21:49:19,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:49:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 654 [2020-09-24 21:49:19,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:19,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-24 21:49:19,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:19,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:19,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:19,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:19,971 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:19,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:19,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:19,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:49:19,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:19,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:19,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:19,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-24 21:49:19,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:19,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:19,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:19,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:19,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:19,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:49:19,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:49:19,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:19,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:19,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-24 21:49:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:20,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:20,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:20,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:20,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:20,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:49:20,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:20,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-09-24 21:49:20,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:20,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:20,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:20,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:49:20,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:20,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:20,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:49:20,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:20,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:20,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-09-24 21:49:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:20,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:20,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:20,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:20,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:20,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:20,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:20,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:20,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:20,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:20,047 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 21:49:20,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255110931] [2020-09-24 21:49:20,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:49:20,048 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:49:20,048 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032287571] [2020-09-24 21:49:20,049 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:49:20,049 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:20,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:49:20,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:49:20,049 INFO L87 Difference]: Start difference. First operand 203 states and 228 transitions. Second operand 5 states. [2020-09-24 21:49:20,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:20,421 INFO L93 Difference]: Finished difference Result 419 states and 473 transitions. [2020-09-24 21:49:20,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:49:20,422 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-09-24 21:49:20,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:20,424 INFO L225 Difference]: With dead ends: 419 [2020-09-24 21:49:20,425 INFO L226 Difference]: Without dead ends: 235 [2020-09-24 21:49:20,426 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 [2020-09-24 21:49:20,427 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2020-09-24 21:49:20,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 204. [2020-09-24 21:49:20,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-09-24 21:49:20,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 229 transitions. [2020-09-24 21:49:20,440 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 229 transitions. Word has length 102 [2020-09-24 21:49:20,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:20,441 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 229 transitions. [2020-09-24 21:49:20,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:49:20,441 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 229 transitions. [2020-09-24 21:49:20,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-24 21:49:20,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:20,443 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] [2020-09-24 21:49:20,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:49:20,443 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:20,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:20,444 INFO L82 PathProgramCache]: Analyzing trace with hash 1892707860, now seen corresponding path program 1 times [2020-09-24 21:49:20,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:20,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [448088683] [2020-09-24 21:49:20,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:20,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:20,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:20,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:20,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:21,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:21,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-09-24 21:49:21,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:49:21,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1147 [2020-09-24 21:49:21,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:49:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:49:21,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:21,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:21,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:21,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:21,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:21,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:21,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:49:21,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:21,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:21,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:21,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 21:49:21,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:21,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:21,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:21,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:21,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:49:21,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:21,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:21,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:49:21,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:21,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:21,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 21:49:21,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:21,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:21,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:21,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:21,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:21,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:21,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:21,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:21,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:21,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:21,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:21,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-09-24 21:49:21,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:21,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:21,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:21,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:49:21,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:21,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:21,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:21,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:49:21,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:21,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:21,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-09-24 21:49:21,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:21,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:21,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:21,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:21,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:21,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:21,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:21,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:21,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:21,734 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 21:49:21,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [448088683] [2020-09-24 21:49:21,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:21,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:49:21,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757250515] [2020-09-24 21:49:21,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:49:21,736 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:21,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:49:21,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:49:21,737 INFO L87 Difference]: Start difference. First operand 204 states and 229 transitions. Second operand 7 states. [2020-09-24 21:49:22,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:22,211 INFO L93 Difference]: Finished difference Result 426 states and 480 transitions. [2020-09-24 21:49:22,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 21:49:22,212 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 109 [2020-09-24 21:49:22,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:22,215 INFO L225 Difference]: With dead ends: 426 [2020-09-24 21:49:22,215 INFO L226 Difference]: Without dead ends: 242 [2020-09-24 21:49:22,216 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 [2020-09-24 21:49:22,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-09-24 21:49:22,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 211. [2020-09-24 21:49:22,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-09-24 21:49:22,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 236 transitions. [2020-09-24 21:49:22,233 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 236 transitions. Word has length 109 [2020-09-24 21:49:22,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:22,233 INFO L479 AbstractCegarLoop]: Abstraction has 211 states and 236 transitions. [2020-09-24 21:49:22,233 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:49:22,233 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 236 transitions. [2020-09-24 21:49:22,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-09-24 21:49:22,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:22,236 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] [2020-09-24 21:49:22,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:49:22,236 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:22,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:22,237 INFO L82 PathProgramCache]: Analyzing trace with hash 1238084835, now seen corresponding path program 2 times [2020-09-24 21:49:22,237 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:22,237 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075735100] [2020-09-24 21:49:22,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:22,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:22,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:22,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:23,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:23,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 21:49:23,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:49:23,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1641 [2020-09-24 21:49:23,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:49:23,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:23,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-24 21:49:23,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:23,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:23,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:23,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:23,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:23,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:23,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:23,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:49:23,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:23,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:23,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:23,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-24 21:49:23,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:23,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:23,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:23,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:23,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:23,972 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:49:23,972 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:23,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:23,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:49:23,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:23,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:23,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-24 21:49:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:23,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:23,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:23,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:23,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:23,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:23,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:23,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:23,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:23,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:23,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-09-24 21:49:23,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:24,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:24,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:24,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:49:24,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:24,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:24,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:49:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:24,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:24,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 21:49:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:24,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:24,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:24,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:24,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:24,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:24,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:24,035 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 21:49:24,036 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075735100] [2020-09-24 21:49:24,036 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:24,037 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:49:24,037 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172695937] [2020-09-24 21:49:24,037 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:49:24,038 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:24,038 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:49:24,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:49:24,038 INFO L87 Difference]: Start difference. First operand 211 states and 236 transitions. Second operand 9 states. [2020-09-24 21:49:24,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:24,406 INFO L93 Difference]: Finished difference Result 433 states and 487 transitions. [2020-09-24 21:49:24,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 21:49:24,406 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 116 [2020-09-24 21:49:24,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:24,408 INFO L225 Difference]: With dead ends: 433 [2020-09-24 21:49:24,408 INFO L226 Difference]: Without dead ends: 249 [2020-09-24 21:49:24,411 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:49:24,412 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-24 21:49:24,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 218. [2020-09-24 21:49:24,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 218 states. [2020-09-24 21:49:24,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 243 transitions. [2020-09-24 21:49:24,424 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 243 transitions. Word has length 116 [2020-09-24 21:49:24,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:24,424 INFO L479 AbstractCegarLoop]: Abstraction has 218 states and 243 transitions. [2020-09-24 21:49:24,424 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:49:24,424 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 243 transitions. [2020-09-24 21:49:24,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 21:49:24,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:24,429 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] [2020-09-24 21:49:24,429 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:49:24,429 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:24,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:24,429 INFO L82 PathProgramCache]: Analyzing trace with hash -127797452, now seen corresponding path program 3 times [2020-09-24 21:49:24,430 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:24,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754594320] [2020-09-24 21:49:24,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:24,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:24,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:24,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:26,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:26,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 21:49:26,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:49:26,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2007 [2020-09-24 21:49:26,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:49:26,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:26,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 21:49:26,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:26,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:26,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:26,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:26,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:26,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:26,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:49:26,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:26,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:26,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:26,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:26,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:26,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-24 21:49:26,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:26,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:26,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:26,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:26,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:26,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:49:26,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:49:26,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:26,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:26,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-09-24 21:49:26,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:26,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:26,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:26,580 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:26,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:26,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:26,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:26,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:26,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:26,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-09-24 21:49:26,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:26,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:26,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:26,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:49:26,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:26,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:26,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:26,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:49:26,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:26,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:26,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-09-24 21:49:26,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:26,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:26,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:26,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:26,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:26,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:26,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:26,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:26,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:26,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:26,630 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 21:49:26,639 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754594320] [2020-09-24 21:49:26,640 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:26,640 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:49:26,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206767074] [2020-09-24 21:49:26,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:49:26,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:26,644 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:49:26,645 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:49:26,645 INFO L87 Difference]: Start difference. First operand 218 states and 243 transitions. Second operand 11 states. [2020-09-24 21:49:27,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:27,231 INFO L93 Difference]: Finished difference Result 440 states and 494 transitions. [2020-09-24 21:49:27,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:49:27,232 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 123 [2020-09-24 21:49:27,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:27,234 INFO L225 Difference]: With dead ends: 440 [2020-09-24 21:49:27,234 INFO L226 Difference]: Without dead ends: 256 [2020-09-24 21:49:27,236 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 [2020-09-24 21:49:27,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 256 states. [2020-09-24 21:49:27,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 256 to 225. [2020-09-24 21:49:27,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-09-24 21:49:27,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 250 transitions. [2020-09-24 21:49:27,253 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 250 transitions. Word has length 123 [2020-09-24 21:49:27,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:27,254 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 250 transitions. [2020-09-24 21:49:27,254 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:49:27,254 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 250 transitions. [2020-09-24 21:49:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-09-24 21:49:27,256 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:27,256 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] [2020-09-24 21:49:27,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:49:27,256 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:27,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:27,257 INFO L82 PathProgramCache]: Analyzing trace with hash -901537853, now seen corresponding path program 4 times [2020-09-24 21:49:27,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:27,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [81123243] [2020-09-24 21:49:27,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:27,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:27,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:30,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 147 [2020-09-24 21:49:30,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:49:30,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3073 [2020-09-24 21:49:30,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:49:30,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:30,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:49:30,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:30,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:30,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:30,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:30,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:49:30,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:30,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:30,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:30,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 21:49:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:30,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:30,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:30,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:49:30,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:30,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:49:30,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:30,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:30,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-24 21:49:30,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:30,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:30,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:30,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:49:30,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:30,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:30,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:30,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-09-24 21:49:30,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:30,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:49:30,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:30,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:30,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:30,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:49:30,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:30,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:30,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-09-24 21:49:30,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:30,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:30,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:30,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:30,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:30,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:30,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:30,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:30,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:30,554 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 21:49:30,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [81123243] [2020-09-24 21:49:30,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:30,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:49:30,555 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162421140] [2020-09-24 21:49:30,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:49:30,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:30,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:49:30,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:49:30,556 INFO L87 Difference]: Start difference. First operand 225 states and 250 transitions. Second operand 13 states. [2020-09-24 21:49:31,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:31,095 INFO L93 Difference]: Finished difference Result 447 states and 501 transitions. [2020-09-24 21:49:31,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 21:49:31,096 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 130 [2020-09-24 21:49:31,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:31,098 INFO L225 Difference]: With dead ends: 447 [2020-09-24 21:49:31,098 INFO L226 Difference]: Without dead ends: 263 [2020-09-24 21:49:31,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=139, Invalid=367, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:49:31,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2020-09-24 21:49:31,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 232. [2020-09-24 21:49:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2020-09-24 21:49:31,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 257 transitions. [2020-09-24 21:49:31,111 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 257 transitions. Word has length 130 [2020-09-24 21:49:31,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:31,111 INFO L479 AbstractCegarLoop]: Abstraction has 232 states and 257 transitions. [2020-09-24 21:49:31,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:49:31,112 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 257 transitions. [2020-09-24 21:49:31,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-24 21:49:31,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:31,113 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] [2020-09-24 21:49:31,114 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:49:31,114 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:31,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:31,114 INFO L82 PathProgramCache]: Analyzing trace with hash 360515668, now seen corresponding path program 5 times [2020-09-24 21:49:31,115 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:31,115 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525374581] [2020-09-24 21:49:31,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:31,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:31,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:34,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:34,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 21:49:34,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:49:34,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3102 [2020-09-24 21:49:34,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:49:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:34,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 21:49:34,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:34,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:34,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:34,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:34,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:34,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:34,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:49:34,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:34,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:34,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-09-24 21:49:34,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:34,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:34,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:34,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:34,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:34,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:49:34,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:34,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:49:34,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:34,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:34,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-09-24 21:49:34,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:34,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:34,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:34,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:34,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:34,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:34,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:34,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:34,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:34,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-09-24 21:49:34,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:34,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:34,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:34,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:49:34,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:34,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:49:34,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:34,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:34,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:49:34,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:34,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:34,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-09-24 21:49:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:34,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:34,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:34,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:34,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:34,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 21:49:34,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:34,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:34,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:34,434 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-24 21:49:34,435 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525374581] [2020-09-24 21:49:34,435 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:34,435 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:49:34,435 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666349484] [2020-09-24 21:49:34,436 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:49:34,436 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:34,437 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:49:34,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:49:34,437 INFO L87 Difference]: Start difference. First operand 232 states and 257 transitions. Second operand 15 states. [2020-09-24 21:49:35,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:35,139 INFO L93 Difference]: Finished difference Result 454 states and 508 transitions. [2020-09-24 21:49:35,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-24 21:49:35,139 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 137 [2020-09-24 21:49:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:35,141 INFO L225 Difference]: With dead ends: 454 [2020-09-24 21:49:35,141 INFO L226 Difference]: Without dead ends: 270 [2020-09-24 21:49:35,143 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=195, Invalid=507, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:49:35,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2020-09-24 21:49:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 239. [2020-09-24 21:49:35,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 239 states. [2020-09-24 21:49:35,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 264 transitions. [2020-09-24 21:49:35,156 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 264 transitions. Word has length 137 [2020-09-24 21:49:35,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:35,156 INFO L479 AbstractCegarLoop]: Abstraction has 239 states and 264 transitions. [2020-09-24 21:49:35,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:49:35,156 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 264 transitions. [2020-09-24 21:49:35,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2020-09-24 21:49:35,158 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:35,158 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 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] [2020-09-24 21:49:35,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:49:35,159 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:35,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:35,159 INFO L82 PathProgramCache]: Analyzing trace with hash -1192686941, now seen corresponding path program 6 times [2020-09-24 21:49:35,159 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:35,160 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095749005] [2020-09-24 21:49:35,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:35,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:35,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:35,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:38,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:38,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 21:49:38,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:49:38,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3748 [2020-09-24 21:49:38,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:49:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:38,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 21:49:38,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:39,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:39,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:39,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:39,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:39,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:49:39,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:39,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:49:39,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:39,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:39,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:39,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 21:49:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:39,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:39,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:39,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-09-24 21:49:39,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:49:39,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:49:39,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:39,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:39,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-24 21:49:39,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:39,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:39,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:39,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 21:49:39,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:39,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:49:39,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 21:49:39,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:39,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:39,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-09-24 21:49:39,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:39,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:39,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:39,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:49:39,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:39,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:49:39,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-24 21:49:39,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:39,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:49:39,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-09-24 21:49:39,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:39,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking...