/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/recursive-simple/id_o100.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:34:31,952 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:34:31,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:34:31,983 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:34:31,983 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:34:31,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:34:31,986 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:34:31,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:34:31,994 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:34:31,995 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:34:31,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:34:32,000 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:34:32,000 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:34:32,001 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:34:32,004 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:34:32,006 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:34:32,007 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:34:32,010 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:34:32,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:34:32,017 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:34:32,021 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:34:32,022 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:34:32,024 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:34:32,025 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:34:32,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:34:32,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:34:32,031 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:34:32,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:34:32,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:34:32,037 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:34:32,037 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:34:32,047 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:34:32,051 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:34:32,052 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:34:32,053 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:34:32,054 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:34:32,054 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:34:32,055 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:34:32,055 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:34:32,056 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:34:32,058 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:34:32,059 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 21:34:32,087 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:34:32,087 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:34:32,089 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:34:32,089 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:34:32,089 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:34:32,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:34:32,090 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:34:32,090 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:34:32,090 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:34:32,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:34:32,090 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:34:32,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:34:32,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:34:32,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:34:32,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:34:32,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:34:32,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:34:32,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:34:32,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:34:32,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:34:32,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:34:32,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:34:32,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:34:32,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:34:32,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:34:32,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:34:32,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:34:32,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:34:32,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:34:32,095 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 21:34:32,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:34:32,600 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:34:32,604 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:34:32,606 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:34:32,607 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:34:32,608 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-24 21:34:32,702 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68182ef63/65ac26e669eb404e9d447c0499f2f26a/FLAG88a345b79 [2020-09-24 21:34:33,236 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:34:33,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_o100.c [2020-09-24 21:34:33,244 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68182ef63/65ac26e669eb404e9d447c0499f2f26a/FLAG88a345b79 [2020-09-24 21:34:33,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/68182ef63/65ac26e669eb404e9d447c0499f2f26a [2020-09-24 21:34:33,602 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:34:33,611 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:34:33,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:34:33,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:34:33,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:34:33,622 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:34:33" (1/1) ... [2020-09-24 21:34:33,627 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ef58f51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33, skipping insertion in model container [2020-09-24 21:34:33,627 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:34:33" (1/1) ... [2020-09-24 21:34:33,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:34:33,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:34:33,878 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:34:33,884 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:34:33,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:34:33,914 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:34:33,914 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33 WrapperNode [2020-09-24 21:34:33,914 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:34:33,915 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:34:33,915 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:34:33,915 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:34:33,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33" (1/1) ... [2020-09-24 21:34:33,930 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33" (1/1) ... [2020-09-24 21:34:33,935 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33" (1/1) ... [2020-09-24 21:34:33,935 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33" (1/1) ... [2020-09-24 21:34:34,021 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33" (1/1) ... [2020-09-24 21:34:34,024 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33" (1/1) ... [2020-09-24 21:34:34,025 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33" (1/1) ... [2020-09-24 21:34:34,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:34:34,027 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:34:34,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:34:34,028 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:34:34,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33" (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 21:34:34,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:34:34,110 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:34:34,110 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-24 21:34:34,111 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:34:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-24 21:34:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:34:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-24 21:34:34,111 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:34:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:34:34,112 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:34:34,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:34:34,308 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:34:34,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:34:34 BoogieIcfgContainer [2020-09-24 21:34:34,313 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:34:34,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:34:34,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:34:34,321 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:34:34,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:34:33" (1/3) ... [2020-09-24 21:34:34,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3b549c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:34:34, skipping insertion in model container [2020-09-24 21:34:34,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:34:33" (2/3) ... [2020-09-24 21:34:34,323 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d3b549c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:34:34, skipping insertion in model container [2020-09-24 21:34:34,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:34:34" (3/3) ... [2020-09-24 21:34:34,326 INFO L109 eAbstractionObserver]: Analyzing ICFG id_o100.c [2020-09-24 21:34:34,354 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:34:34,373 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:34:34,398 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:34:34,431 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:34:34,431 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:34:34,431 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:34:34,431 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:34:34,431 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:34:34,432 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:34:34,432 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:34:34,432 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:34:34,456 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-09-24 21:34:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:34:34,464 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:34,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:34,466 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:34,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:34,476 INFO L82 PathProgramCache]: Analyzing trace with hash -1651991454, now seen corresponding path program 1 times [2020-09-24 21:34:34,484 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:34,485 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350901363] [2020-09-24 21:34:34,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:34,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:34,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:34,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:34,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:34:34,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:34,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 21:34:34,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:34:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:34:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:34:34,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:34,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:34,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:34,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:34,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:34,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:34,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:34:34,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:34,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:34,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:34,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:34,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:34,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:34,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:34,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:34,799 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:34,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:34,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:34:34,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:34,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:34,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:34,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:34,845 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 21:34:34,846 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1350901363] [2020-09-24 21:34:34,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:34:34,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:34:34,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61452624] [2020-09-24 21:34:34,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:34:34,854 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:34,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:34:34,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:34:34,871 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-09-24 21:34:34,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:34,961 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-24 21:34:34,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:34:34,963 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:34:34,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:34,978 INFO L225 Difference]: With dead ends: 37 [2020-09-24 21:34:34,978 INFO L226 Difference]: Without dead ends: 22 [2020-09-24 21:34:34,983 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 21:34:35,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-09-24 21:34:35,032 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-09-24 21:34:35,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-24 21:34:35,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 23 transitions. [2020-09-24 21:34:35,038 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 23 transitions. Word has length 16 [2020-09-24 21:34:35,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:35,038 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 23 transitions. [2020-09-24 21:34:35,039 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:34:35,039 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 23 transitions. [2020-09-24 21:34:35,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-09-24 21:34:35,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:35,041 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] [2020-09-24 21:34:35,042 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:34:35,042 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:35,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:35,043 INFO L82 PathProgramCache]: Analyzing trace with hash 189324707, now seen corresponding path program 1 times [2020-09-24 21:34:35,043 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:35,044 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1401341410] [2020-09-24 21:34:35,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:35,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:35,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:34:35,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:35,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-09-24 21:34:35,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:34:35,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 21:34:35,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 21:34:35,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:35,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:35,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:35,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:35,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:35,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:35,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:35,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:34:35,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:35,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:35,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:35,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:35,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:35,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:35,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:35,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:34:35,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 21:34:35,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:34:35,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:35,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:35,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:35,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:35,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:35,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:35,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 21:34:35,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:35,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:35,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:35,579 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 21:34:35,581 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1401341410] [2020-09-24 21:34:35,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:35,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:34:35,582 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475977975] [2020-09-24 21:34:35,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:34:35,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:35,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:34:35,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:34:35,587 INFO L87 Difference]: Start difference. First operand 22 states and 23 transitions. Second operand 7 states. [2020-09-24 21:34:35,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:35,693 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-09-24 21:34:35,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 21:34:35,694 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 23 [2020-09-24 21:34:35,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:35,696 INFO L225 Difference]: With dead ends: 31 [2020-09-24 21:34:35,696 INFO L226 Difference]: Without dead ends: 26 [2020-09-24 21:34:35,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:34:35,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-24 21:34:35,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-24 21:34:35,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-24 21:34:35,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-24 21:34:35,712 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 23 [2020-09-24 21:34:35,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:35,713 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-24 21:34:35,713 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:34:35,713 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-24 21:34:35,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-24 21:34:35,717 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:35,717 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:35,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:34:35,718 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:35,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:35,719 INFO L82 PathProgramCache]: Analyzing trace with hash -1416732684, now seen corresponding path program 2 times [2020-09-24 21:34:35,719 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:35,719 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252512242] [2020-09-24 21:34:35,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:35,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:35,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:36,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-09-24 21:34:36,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:36,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-24 21:34:36,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:34:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-09-24 21:34:36,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 21:34:36,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:36,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:36,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:36,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:36,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:34:36,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:36,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:36,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:36,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:36,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:34:36,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:36,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-24 21:34:36,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:36,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:36,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:36,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:36,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:36,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:36,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:36,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:34:36,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:36,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 21:34:36,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:36,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:36,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:34:36,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:36,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:36,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:36,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:36,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:36,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:36,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 21:34:36,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:36,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:36,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:36,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:34:36,443 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 21:34:36,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252512242] [2020-09-24 21:34:36,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:36,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:34:36,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023449251] [2020-09-24 21:34:36,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:34:36,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:36,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:34:36,449 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:34:36,449 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 9 states. [2020-09-24 21:34:36,562 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:36,563 INFO L93 Difference]: Finished difference Result 35 states and 36 transitions. [2020-09-24 21:34:36,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 21:34:36,564 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 30 [2020-09-24 21:34:36,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:36,565 INFO L225 Difference]: With dead ends: 35 [2020-09-24 21:34:36,565 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:34:36,566 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:34:36,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:34:36,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 21:34:36,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 21:34:36,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 31 transitions. [2020-09-24 21:34:36,573 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 31 transitions. Word has length 30 [2020-09-24 21:34:36,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:36,574 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 31 transitions. [2020-09-24 21:34:36,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:34:36,574 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 31 transitions. [2020-09-24 21:34:36,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-24 21:34:36,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:36,576 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:36,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:34:36,576 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:36,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:36,577 INFO L82 PathProgramCache]: Analyzing trace with hash -209476043, now seen corresponding path program 3 times [2020-09-24 21:34:36,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:36,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911637793] [2020-09-24 21:34:36,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:36,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:36,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:36,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-09-24 21:34:36,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:36,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-09-24 21:34:36,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:34:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-09-24 21:34:36,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:34:36,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:36,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:36,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:36,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:36,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:36,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:36,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:36,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:36,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:36,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:36,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:36,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:36,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:37,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:37,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:34:37,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:37,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 21:34:37,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:37,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:34:37,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:37,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:37,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:37,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:37,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:37,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:34:37,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:37,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-24 21:34:37,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:37,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:37,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:37,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:37,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:37,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:37,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:37,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:37,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:34:37,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:37,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 21:34:37,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:37,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:34:37,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:37,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:37,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:37,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:37,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:37,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 21:34:37,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:37,377 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 21:34:37,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911637793] [2020-09-24 21:34:37,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:37,378 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:34:37,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404227420] [2020-09-24 21:34:37,379 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:34:37,379 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:37,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:34:37,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:34:37,380 INFO L87 Difference]: Start difference. First operand 30 states and 31 transitions. Second operand 11 states. [2020-09-24 21:34:37,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:37,553 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-24 21:34:37,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:34:37,554 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 37 [2020-09-24 21:34:37,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:37,555 INFO L225 Difference]: With dead ends: 39 [2020-09-24 21:34:37,555 INFO L226 Difference]: Without dead ends: 34 [2020-09-24 21:34:37,556 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:34:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-24 21:34:37,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2020-09-24 21:34:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 21:34:37,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2020-09-24 21:34:37,563 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 37 [2020-09-24 21:34:37,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:37,564 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2020-09-24 21:34:37,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:34:37,564 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2020-09-24 21:34:37,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 21:34:37,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:37,566 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:37,566 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:34:37,566 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:37,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:37,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1007399302, now seen corresponding path program 4 times [2020-09-24 21:34:37,567 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:37,568 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [393752438] [2020-09-24 21:34:37,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:37,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:37,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:37,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:37,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-24 21:34:37,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:37,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-09-24 21:34:37,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:34:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 38 [2020-09-24 21:34:37,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 21:34:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:37,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:37,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:37,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:37,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:37,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:37,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:37,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:34:37,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:37,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:37,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:37,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:37,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:37,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:37,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:38,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:38,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:34:38,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:38,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-09-24 21:34:38,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:34:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:38,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:34:38,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:38,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:38,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:38,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:38,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:38,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:34:38,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:38,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-24 21:34:38,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:38,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:38,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:34:38,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:38,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:38,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:38,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:38,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:38,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:34:38,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:38,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 21:34:38,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:38,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:38,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:38,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:38,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:38,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:38,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:34:38,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:38,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 21:34:38,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:38,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:38,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:34:38,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:38,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:38,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:38,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:38,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:38,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:38,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:34:38,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:38,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:38,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:38,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-24 21:34:38,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [393752438] [2020-09-24 21:34:38,755 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:38,755 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 21:34:38,756 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [899966503] [2020-09-24 21:34:38,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 21:34:38,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:38,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 21:34:38,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-09-24 21:34:38,757 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand 13 states. [2020-09-24 21:34:38,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:38,945 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-09-24 21:34:38,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-24 21:34:38,945 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 44 [2020-09-24 21:34:38,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:38,947 INFO L225 Difference]: With dead ends: 43 [2020-09-24 21:34:38,947 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:34:38,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:34:38,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:34:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-24 21:34:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 21:34:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-24 21:34:38,955 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 44 [2020-09-24 21:34:38,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:38,956 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-24 21:34:38,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 21:34:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-24 21:34:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:34:38,958 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:38,958 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:38,958 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:34:38,958 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:38,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:38,959 INFO L82 PathProgramCache]: Analyzing trace with hash -1787659065, now seen corresponding path program 5 times [2020-09-24 21:34:38,959 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:38,960 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471898589] [2020-09-24 21:34:38,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:38,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:38,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:39,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:39,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 21:34:39,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:39,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-09-24 21:34:39,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 21:34:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-24 21:34:39,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 21:34:39,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:39,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:39,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:39,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:39,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:39,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:39,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:39,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:39,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:39,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:39,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:39,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:39,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:39,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:34:39,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:39,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-09-24 21:34:39,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:39,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:34:39,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:39,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:39,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:39,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:39,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:34:39,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:39,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 21:34:39,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:34:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:39,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:34:39,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:39,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:39,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:39,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:40,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:40,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:34:40,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:40,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-24 21:34:40,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:40,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:40,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:34:40,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:40,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:40,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:40,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:40,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:34:40,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:40,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 21:34:40,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:40,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:40,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:40,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:40,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:40,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:40,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:40,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:40,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:40,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:34:40,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:40,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 21:34:40,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:40,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:34:40,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:40,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:40,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:40,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:40,408 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:40,408 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:40,408 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:34:40,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:40,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:40,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:40,444 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-24 21:34:40,445 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471898589] [2020-09-24 21:34:40,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:40,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-24 21:34:40,446 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017698008] [2020-09-24 21:34:40,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-24 21:34:40,446 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:40,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-24 21:34:40,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:34:40,447 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 15 states. [2020-09-24 21:34:40,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:40,680 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-24 21:34:40,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 21:34:40,681 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 51 [2020-09-24 21:34:40,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:40,683 INFO L225 Difference]: With dead ends: 47 [2020-09-24 21:34:40,683 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 21:34:40,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:34:40,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 21:34:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 21:34:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 21:34:40,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-09-24 21:34:40,691 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 51 [2020-09-24 21:34:40,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:40,691 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-09-24 21:34:40,691 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-24 21:34:40,692 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-09-24 21:34:40,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-24 21:34:40,693 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:40,693 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:40,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:34:40,693 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:40,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:40,694 INFO L82 PathProgramCache]: Analyzing trace with hash -1360883432, now seen corresponding path program 6 times [2020-09-24 21:34:40,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:40,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77903092] [2020-09-24 21:34:40,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:40,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:41,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:41,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:34:41,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:41,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-24 21:34:41,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:34:41,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-09-24 21:34:41,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:34:41,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:41,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:41,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:41,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:41,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:41,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:41,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:41,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:41,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:41,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:41,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:41,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:41,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:41,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:34:41,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 421 [2020-09-24 21:34:41,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:34:41,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:41,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:34:41,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:41,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:41,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:41,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:42,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:42,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:34:42,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:42,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-09-24 21:34:42,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:42,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:34:42,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:42,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:42,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:42,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:42,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:42,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:34:42,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:42,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-24 21:34:42,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:34:42,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:42,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:34:42,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:42,395 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:42,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:42,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:42,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:34:42,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:42,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 21:34:42,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:42,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:34:42,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:42,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:42,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:42,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:42,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:42,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:34:42,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:42,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-09-24 21:34:42,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:42,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:42,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:42,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:42,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:42,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:42,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:42,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:34:42,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:42,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 21:34:42,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:42,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:34:42,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:42,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:42,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:42,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:42,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:42,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:42,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:42,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:34:42,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:42,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:42,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:42,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:42,861 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-24 21:34:42,861 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77903092] [2020-09-24 21:34:42,862 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:42,862 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 21:34:42,863 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133569008] [2020-09-24 21:34:42,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:34:42,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:42,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:34:42,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:34:42,866 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 17 states. [2020-09-24 21:34:43,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:43,173 INFO L93 Difference]: Finished difference Result 51 states and 52 transitions. [2020-09-24 21:34:43,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:34:43,173 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-09-24 21:34:43,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:43,176 INFO L225 Difference]: With dead ends: 51 [2020-09-24 21:34:43,176 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 21:34:43,177 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=59, Invalid=493, Unknown=0, NotChecked=0, Total=552 [2020-09-24 21:34:43,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 21:34:43,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-24 21:34:43,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 21:34:43,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-24 21:34:43,192 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 58 [2020-09-24 21:34:43,192 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:43,193 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-24 21:34:43,195 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:34:43,195 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-24 21:34:43,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-24 21:34:43,197 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:43,197 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:43,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:34:43,197 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:43,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:43,199 INFO L82 PathProgramCache]: Analyzing trace with hash -807968423, now seen corresponding path program 7 times [2020-09-24 21:34:43,199 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:43,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443808109] [2020-09-24 21:34:43,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:43,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:43,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:43,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:43,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-24 21:34:43,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 631 [2020-09-24 21:34:43,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 21:34:43,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-09-24 21:34:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 21:34:43,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:43,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:43,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:43,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:43,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:43,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:43,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:43,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:43,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:43,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:43,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:43,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:43,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:44,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:44,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:34:44,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:44,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-09-24 21:34:44,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:34:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:44,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:34:44,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:44,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:44,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:44,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:44,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:44,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:34:44,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:44,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 372 [2020-09-24 21:34:44,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:34:44,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:44,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:34:44,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:44,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:44,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:44,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:45,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:45,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:34:45,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:45,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 21:34:45,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:45,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:34:45,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:45,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:45,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:45,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:45,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:45,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:34:45,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:45,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-09-24 21:34:45,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:34:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:45,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:34:45,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:45,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:45,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:45,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:45,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:45,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:34:45,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-09-24 21:34:45,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:34:45,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:45,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:45,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:45,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:45,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:45,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:34:45,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:45,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-24 21:34:45,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:45,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:45,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:45,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:45,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:45,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:45,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:45,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:45,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:34:45,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:45,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 21:34:45,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:45,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:45,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:34:45,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:45,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:45,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:45,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:45,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:45,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:45,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:45,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:34:45,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:45,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:45,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:45,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:45,946 INFO L134 CoverageAnalysis]: Checked inductivity of 175 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-24 21:34:45,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443808109] [2020-09-24 21:34:45,947 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:45,947 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-24 21:34:45,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051132128] [2020-09-24 21:34:45,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-24 21:34:45,949 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:45,949 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-24 21:34:45,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-09-24 21:34:45,950 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 19 states. [2020-09-24 21:34:46,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:46,325 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-09-24 21:34:46,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-24 21:34:46,325 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-09-24 21:34:46,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:46,327 INFO L225 Difference]: With dead ends: 55 [2020-09-24 21:34:46,327 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 21:34:46,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:34:46,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 21:34:46,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-09-24 21:34:46,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 21:34:46,334 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-09-24 21:34:46,334 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 65 [2020-09-24 21:34:46,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:46,335 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-09-24 21:34:46,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-24 21:34:46,335 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-09-24 21:34:46,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-24 21:34:46,336 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:46,336 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:46,337 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 21:34:46,337 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:46,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:46,337 INFO L82 PathProgramCache]: Analyzing trace with hash -705364310, now seen corresponding path program 8 times [2020-09-24 21:34:46,337 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:46,338 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1578279683] [2020-09-24 21:34:46,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:46,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:47,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:47,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 21:34:47,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:47,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-09-24 21:34:47,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-24 21:34:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-24 21:34:47,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 21:34:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:47,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:47,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:47,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:47,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:47,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:47,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:47,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:47,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:47,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:47,141 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:47,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:47,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:47,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:47,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:47,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:34:47,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-09-24 21:34:47,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:47,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:34:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:34:47,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:47,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:47,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:48,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:48,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:34:48,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:48,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 472 [2020-09-24 21:34:48,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:48,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:34:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:48,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:34:48,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:48,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:48,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:48,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:48,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:48,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:34:48,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-24 21:34:48,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:34:48,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:48,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:34:48,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:48,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:48,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:49,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:49,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:34:49,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:49,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 272 [2020-09-24 21:34:49,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:49,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:34:49,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:49,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:49,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:49,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:49,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:49,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:34:49,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:49,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-24 21:34:49,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:49,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:34:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:34:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:49,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:49,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:49,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:49,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:34:49,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:49,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 21:34:49,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:49,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:34:49,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:49,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:49,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:49,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:49,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:34:49,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:49,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 21:34:49,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:49,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:49,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:49,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:49,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:49,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:49,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:49,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:49,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:34:49,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:49,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-24 21:34:49,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:49,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:34:49,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:49,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:49,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:49,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:49,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:49,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:49,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:49,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 21:34:49,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:49,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:49,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:49,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:34:49,893 INFO L134 CoverageAnalysis]: Checked inductivity of 228 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-24 21:34:49,894 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1578279683] [2020-09-24 21:34:49,894 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:49,895 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-24 21:34:49,895 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [207260113] [2020-09-24 21:34:49,896 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 21:34:49,896 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:49,896 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 21:34:49,897 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-09-24 21:34:49,897 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 21 states. [2020-09-24 21:34:50,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:50,468 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-24 21:34:50,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 21:34:50,469 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 72 [2020-09-24 21:34:50,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:50,471 INFO L225 Difference]: With dead ends: 59 [2020-09-24 21:34:50,471 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 21:34:50,475 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=75, Invalid=795, Unknown=0, NotChecked=0, Total=870 [2020-09-24 21:34:50,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 21:34:50,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 21:34:50,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 21:34:50,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 55 transitions. [2020-09-24 21:34:50,490 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 55 transitions. Word has length 72 [2020-09-24 21:34:50,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:50,493 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 55 transitions. [2020-09-24 21:34:50,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 21:34:50,493 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 55 transitions. [2020-09-24 21:34:50,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-09-24 21:34:50,497 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:50,497 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:50,497 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 21:34:50,497 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:50,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:50,498 INFO L82 PathProgramCache]: Analyzing trace with hash -1418439701, now seen corresponding path program 9 times [2020-09-24 21:34:50,501 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:50,501 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867146017] [2020-09-24 21:34:50,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:50,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:50,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:51,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:51,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 106 [2020-09-24 21:34:51,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:51,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 896 [2020-09-24 21:34:51,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-24 21:34:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 63 [2020-09-24 21:34:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:34:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:51,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:51,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:51,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:51,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:51,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:51,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:51,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:51,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:51,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:51,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:51,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:51,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:51,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:52,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:52,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 21:34:52,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:52,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-09-24 21:34:52,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 21:34:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:52,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:34:52,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:52,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:52,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:52,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:53,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:53,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:34:53,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:53,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 708 [2020-09-24 21:34:53,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:53,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:34:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:53,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:34:53,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:53,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:53,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:53,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:53,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:34:53,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:53,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 459 [2020-09-24 21:34:53,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:34:53,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:53,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:34:53,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:53,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:53,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:53,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:54,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:54,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:34:54,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:54,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 339 [2020-09-24 21:34:54,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:34:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:54,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:34:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:54,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:54,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:54,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:54,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:54,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:34:54,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:54,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-24 21:34:54,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:54,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:34:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:54,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:34:54,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:54,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:54,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:54,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:54,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:34:54,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 21:34:54,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:34:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:54,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:34:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:54,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:54,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:54,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:54,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:34:54,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-09-24 21:34:54,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:54,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:34:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:34:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:54,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:54,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:54,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:55,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:55,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:34:55,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:55,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-24 21:34:55,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:55,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:55,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:34:55,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:55,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:55,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:55,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:55,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:55,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:34:55,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:55,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 21:34:55,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:55,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:55,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:34:55,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:55,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:55,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:55,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:55,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:55,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:55,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:34:55,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:55,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:34:55,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:55,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:34:55,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:55,253 INFO L134 CoverageAnalysis]: Checked inductivity of 288 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-24 21:34:55,253 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867146017] [2020-09-24 21:34:55,253 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:55,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-24 21:34:55,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709238004] [2020-09-24 21:34:55,254 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-24 21:34:55,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:55,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-24 21:34:55,255 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-09-24 21:34:55,256 INFO L87 Difference]: Start difference. First operand 54 states and 55 transitions. Second operand 23 states. [2020-09-24 21:34:55,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:55,771 INFO L93 Difference]: Finished difference Result 63 states and 64 transitions. [2020-09-24 21:34:55,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-24 21:34:55,772 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 79 [2020-09-24 21:34:55,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:55,773 INFO L225 Difference]: With dead ends: 63 [2020-09-24 21:34:55,773 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 21:34:55,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=83, Invalid=973, Unknown=0, NotChecked=0, Total=1056 [2020-09-24 21:34:55,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 21:34:55,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-24 21:34:55,788 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 21:34:55,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-24 21:34:55,791 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 79 [2020-09-24 21:34:55,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:55,792 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-24 21:34:55,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-24 21:34:55,792 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-24 21:34:55,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 21:34:55,793 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:55,793 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:55,794 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 21:34:55,797 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:55,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:55,797 INFO L82 PathProgramCache]: Analyzing trace with hash -182126020, now seen corresponding path program 10 times [2020-09-24 21:34:55,797 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:55,798 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967463809] [2020-09-24 21:34:55,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:55,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:56,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:56,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-24 21:34:56,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:56,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-09-24 21:34:56,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:56,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-24 21:34:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-09-24 21:34:56,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 21:34:56,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:56,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:56,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:56,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:56,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:56,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:56,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:56,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:34:56,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:56,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:56,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:56,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:34:56,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:57,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:57,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:57,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 21:34:57,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:57,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-09-24 21:34:57,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 21:34:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:57,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 21:34:57,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:57,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:58,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:58,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:58,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:58,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 21:34:58,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:58,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 705 [2020-09-24 21:34:58,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:58,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 21:34:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:58,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:34:58,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 21:34:58,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:58,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:58,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:59,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:59,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:34:59,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:59,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-24 21:34:59,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:34:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:59,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:34:59,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:59,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:59,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:59,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:59,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:59,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:34:59,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:59,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-24 21:34:59,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:59,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:34:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:59,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:34:59,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:59,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:34:59,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:59,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:00,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:00,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:35:00,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-24 21:35:00,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:35:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:00,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:35:00,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:00,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:00,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:00,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:00,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:00,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:35:00,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-09-24 21:35:00,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:35:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:00,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:35:00,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:00,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:00,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:00,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:00,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:00,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:35:00,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:00,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 21:35:00,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:35:00,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:00,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:35:00,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:00,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:00,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:00,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:00,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:00,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:35:00,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:00,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 21:35:00,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:35:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:00,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:35:00,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:00,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:00,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:00,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:00,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:00,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:35:00,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:00,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 21:35:00,963 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:35:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:00,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:35:00,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:01,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:01,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:01,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:01,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:01,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:35:01,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:01,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:35:01,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:35:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:01,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:35:01,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:01,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:01,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:01,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:01,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:35:01,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:01,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:35:01,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:01,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:35:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:01,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:01,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:01,222 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-24 21:35:01,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967463809] [2020-09-24 21:35:01,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:35:01,223 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-24 21:35:01,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041880317] [2020-09-24 21:35:01,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-24 21:35:01,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:01,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-24 21:35:01,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-09-24 21:35:01,224 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 25 states. [2020-09-24 21:35:01,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:01,920 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-24 21:35:01,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-24 21:35:01,920 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 86 [2020-09-24 21:35:01,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:01,921 INFO L225 Difference]: With dead ends: 67 [2020-09-24 21:35:01,922 INFO L226 Difference]: Without dead ends: 62 [2020-09-24 21:35:01,923 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=91, Invalid=1169, Unknown=0, NotChecked=0, Total=1260 [2020-09-24 21:35:01,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-24 21:35:01,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-09-24 21:35:01,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 21:35:01,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-09-24 21:35:01,940 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 86 [2020-09-24 21:35:01,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:01,940 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-09-24 21:35:01,941 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-24 21:35:01,944 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-09-24 21:35:01,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-09-24 21:35:01,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:01,945 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:35:01,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 21:35:01,945 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:01,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:01,946 INFO L82 PathProgramCache]: Analyzing trace with hash 1527469181, now seen corresponding path program 11 times [2020-09-24 21:35:01,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:01,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1453342529] [2020-09-24 21:35:01,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:01,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:01,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:03,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:03,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-09-24 21:35:03,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:03,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1190 [2020-09-24 21:35:03,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-24 21:35:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 21:35:03,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:35:03,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:03,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:03,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:03,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:03,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:35:03,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:03,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:35:03,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:03,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:03,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:03,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:35:03,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:03,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:04,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:04,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 21:35:04,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-09-24 21:35:04,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 21:35:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:04,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 21:35:04,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:04,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:04,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:05,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:05,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 21:35:05,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:05,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 801 [2020-09-24 21:35:05,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:05,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 21:35:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:05,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 21:35:05,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:05,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:05,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:05,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:05,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:05,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 21:35:05,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-09-24 21:35:05,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 21:35:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:05,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:35:05,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:05,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:05,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:06,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:06,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:35:06,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:06,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-24 21:35:06,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:06,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:35:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:06,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:35:06,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:06,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:06,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:06,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:06,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:06,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:35:06,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:06,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 396 [2020-09-24 21:35:06,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:35:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:06,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:35:06,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:06,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:06,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:06,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:07,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:07,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:35:07,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:07,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-09-24 21:35:07,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:07,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:35:07,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:07,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:35:07,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:07,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:07,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:07,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:07,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:07,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:35:07,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:07,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-09-24 21:35:07,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:35:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:07,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:35:07,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:07,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:07,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:07,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:07,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:07,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:35:07,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:07,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-09-24 21:35:07,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:35:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:07,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:35:07,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:07,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:07,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:07,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:07,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:07,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:35:07,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-24 21:35:07,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:35:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:07,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:35:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:07,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:07,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:07,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:07,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:07,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:35:07,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:07,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 21:35:07,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:35:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:07,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:35:07,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:07,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:07,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:07,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:35:07,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:35:07,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:35:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:07,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:35:07,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:07,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:07,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:07,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:07,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:35:07,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:07,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:35:07,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:35:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:07,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:07,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:08,076 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-24 21:35:08,077 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1453342529] [2020-09-24 21:35:08,077 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:35:08,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-24 21:35:08,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434247294] [2020-09-24 21:35:08,077 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-24 21:35:08,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:08,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-24 21:35:08,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-09-24 21:35:08,079 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 27 states. [2020-09-24 21:35:08,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:08,924 INFO L93 Difference]: Finished difference Result 71 states and 72 transitions. [2020-09-24 21:35:08,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-24 21:35:08,925 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 93 [2020-09-24 21:35:08,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:08,927 INFO L225 Difference]: With dead ends: 71 [2020-09-24 21:35:08,927 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 21:35:08,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=99, Invalid=1383, Unknown=0, NotChecked=0, Total=1482 [2020-09-24 21:35:08,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 21:35:08,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-24 21:35:08,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 21:35:08,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-24 21:35:08,933 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 93 [2020-09-24 21:35:08,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:08,934 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-24 21:35:08,934 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-24 21:35:08,934 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-24 21:35:08,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2020-09-24 21:35:08,935 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:08,935 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:35:08,935 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-24 21:35:08,935 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:08,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:08,936 INFO L82 PathProgramCache]: Analyzing trace with hash -1034648626, now seen corresponding path program 12 times [2020-09-24 21:35:08,936 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:08,936 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368505254] [2020-09-24 21:35:08,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:08,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:08,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:10,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:10,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 21:35:10,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1254 [2020-09-24 21:35:10,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-24 21:35:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 78 [2020-09-24 21:35:10,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-24 21:35:10,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:10,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:10,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:10,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:35:10,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:10,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:35:10,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:10,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:10,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:35:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:10,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:11,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:11,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 21:35:11,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:11,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1102 [2020-09-24 21:35:11,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:11,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 21:35:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:11,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 21:35:11,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:11,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:11,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:11,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:12,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:12,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 21:35:12,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:12,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 963 [2020-09-24 21:35:12,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:12,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 21:35:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:12,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 21:35:12,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:12,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:12,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:13,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:13,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 21:35:13,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:13,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-09-24 21:35:13,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:13,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 21:35:13,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:13,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 21:35:13,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:13,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:13,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:13,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:13,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:13,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 21:35:13,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-09-24 21:35:13,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 21:35:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:13,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:35:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:14,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:14,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:14,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:14,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:14,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:35:14,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:14,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-09-24 21:35:14,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:35:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:14,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:35:14,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:14,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:14,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:14,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:15,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:15,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:35:15,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:15,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-09-24 21:35:15,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:35:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:35:15,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:15,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:15,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:15,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:15,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:15,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:35:15,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:15,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-09-24 21:35:15,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:15,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:35:15,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:15,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:35:15,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:15,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:15,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:15,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:15,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:15,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:35:15,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:15,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-24 21:35:15,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:35:15,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:15,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:35:15,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:15,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:15,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:15,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:15,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:35:15,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:15,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-24 21:35:15,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:35:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:15,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:35:15,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:15,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:15,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:15,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:16,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:16,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:35:16,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 21:35:16,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:35:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:16,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:35:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:16,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:16,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:16,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:16,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:16,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:35:16,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:16,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 21:35:16,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:35:16,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:16,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:35:16,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:16,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:16,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:16,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:16,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:35:16,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:16,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:35:16,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:35:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:16,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:35:16,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:16,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:16,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:16,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:16,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:35:16,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:16,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 21:35:16,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:35:16,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:16,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:16,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:16,554 INFO L134 CoverageAnalysis]: Checked inductivity of 510 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2020-09-24 21:35:16,555 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368505254] [2020-09-24 21:35:16,555 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:35:16,555 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-24 21:35:16,556 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084856303] [2020-09-24 21:35:16,556 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-24 21:35:16,557 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:16,557 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-24 21:35:16,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:35:16,558 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 29 states. [2020-09-24 21:35:17,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:35:17,523 INFO L93 Difference]: Finished difference Result 75 states and 76 transitions. [2020-09-24 21:35:17,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-24 21:35:17,524 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 100 [2020-09-24 21:35:17,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:35:17,525 INFO L225 Difference]: With dead ends: 75 [2020-09-24 21:35:17,525 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 21:35:17,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=107, Invalid=1615, Unknown=0, NotChecked=0, Total=1722 [2020-09-24 21:35:17,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 21:35:17,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-24 21:35:17,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 21:35:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 71 transitions. [2020-09-24 21:35:17,532 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 71 transitions. Word has length 100 [2020-09-24 21:35:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:35:17,533 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 71 transitions. [2020-09-24 21:35:17,533 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-24 21:35:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 71 transitions. [2020-09-24 21:35:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-24 21:35:17,534 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:35:17,534 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:35:17,534 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-24 21:35:17,535 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:35:17,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:35:17,535 INFO L82 PathProgramCache]: Analyzing trace with hash 996041487, now seen corresponding path program 13 times [2020-09-24 21:35:17,535 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:35:17,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1761397208] [2020-09-24 21:35:17,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:35:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:17,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:19,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:19,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 21:35:19,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:19,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1490 [2020-09-24 21:35:19,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-24 21:35:19,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-09-24 21:35:19,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 21:35:19,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:19,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:35:19,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:19,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:19,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:19,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:35:19,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:35:19,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:35:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:35:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:19,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-09-24 21:35:19,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:19,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:20,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:20,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-24 21:35:20,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:20,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1341 [2020-09-24 21:35:20,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-24 21:35:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:20,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-24 21:35:20,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:20,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:20,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:21,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:21,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 21:35:21,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:21,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-09-24 21:35:21,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-24 21:35:21,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:21,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-24 21:35:21,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:21,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:21,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:22,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:22,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 21:35:22,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:22,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1105 [2020-09-24 21:35:22,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-24 21:35:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:22,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-09-24 21:35:22,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:22,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:22,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:23,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:23,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-24 21:35:23,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:23,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-09-24 21:35:23,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 21:35:23,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:23,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-24 21:35:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:23,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:23,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:24,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:24,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 21:35:24,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:24,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-09-24 21:35:24,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-24 21:35:24,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-09-24 21:35:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:24,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:24,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:24,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:24,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:24,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-24 21:35:24,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:24,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 479 [2020-09-24 21:35:24,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:24,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-24 21:35:24,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:24,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:35:24,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:24,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:24,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:24,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:25,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:25,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-24 21:35:25,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:25,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 383 [2020-09-24 21:35:25,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-24 21:35:25,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:25,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-24 21:35:25,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:25,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:25,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:25,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:25,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:25,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-24 21:35:25,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:25,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-09-24 21:35:25,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:25,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 21:35:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:25,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-24 21:35:25,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:25,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:25,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:25,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:25,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 21:35:25,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:25,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 21:35:25,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-24 21:35:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:25,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:35:25,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:25,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:25,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:25,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:26,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:26,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 21:35:26,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 21:35:26,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:35:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:26,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 21:35:26,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:35:26,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:26,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:26,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:26,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:26,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-24 21:35:26,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:26,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-24 21:35:26,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:26,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:35:26,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:26,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:35:26,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:26,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:26,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:26,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:26,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-24 21:35:26,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-24 21:35:26,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:35:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:26,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-24 21:35:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:26,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:26,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:26,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:26,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:26,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-24 21:35:26,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:26,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 21:35:26,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:35:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:26,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 21:35:26,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:26,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-24 21:35:26,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:35:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:35:26,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:35:26,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:35:26,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:35:26,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:35:26,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:35:26,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:35:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:35:26,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:35:26,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:35:26,696 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2020-09-24 21:35:26,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1761397208] [2020-09-24 21:35:26,697 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:35:26,697 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-24 21:35:26,697 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105560797] [2020-09-24 21:35:26,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-24 21:35:26,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:35:26,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-24 21:35:26,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-09-24 21:35:26,698 INFO L87 Difference]: Start difference. First operand 70 states and 71 transitions. Second operand 31 states.