/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=NARROWEST --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/fibo_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:01:24,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:01:24,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:01:24,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:01:24,855 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:01:24,857 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:01:24,858 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:01:24,860 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:01:24,863 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:01:24,864 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:01:24,865 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:01:24,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:01:24,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:01:24,868 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:01:24,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:01:24,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:01:24,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:01:24,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:01:24,875 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:01:24,877 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:01:24,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:01:24,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:01:24,885 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:01:24,886 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:01:24,893 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:01:24,893 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:01:24,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:01:24,899 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:01:24,899 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:01:24,902 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:01:24,902 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:01:24,905 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:01:24,906 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:01:24,907 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:01:24,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:01:24,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:01:24,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:01:24,910 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:01:24,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:01:24,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:01:24,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:01:24,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 02:01:24,978 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:01:24,979 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:01:24,980 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:01:24,981 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:01:24,982 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:01:24,982 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:01:24,982 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:01:24,982 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:01:24,983 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:01:24,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:01:24,984 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:01:24,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:01:24,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:01:24,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:01:24,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:01:24,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:01:24,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:01:24,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:01:24,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:01:24,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:01:24,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:01:24,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:01:24,988 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:01:24,988 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:01:24,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:01:24,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:01:24,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:01:24,989 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:01:24,989 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:01:24,989 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:01:25,473 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:01:25,500 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:01:25,507 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:01:25,511 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:01:25,511 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:01:25,512 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-25 02:01:25,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c57821241/26dbf6fb6a2e4c6fa8c59dad30cabb63/FLAG6a4915bbe [2020-09-25 02:01:26,116 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:01:26,117 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-25 02:01:26,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c57821241/26dbf6fb6a2e4c6fa8c59dad30cabb63/FLAG6a4915bbe [2020-09-25 02:01:26,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c57821241/26dbf6fb6a2e4c6fa8c59dad30cabb63 [2020-09-25 02:01:26,482 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:01:26,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:01:26,490 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:26,490 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:01:26,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:01:26,496 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:26" (1/1) ... [2020-09-25 02:01:26,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26, skipping insertion in model container [2020-09-25 02:01:26,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:01:26" (1/1) ... [2020-09-25 02:01:26,510 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:01:26,536 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:01:26,757 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:26,762 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:01:26,783 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:01:26,802 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:01:26,802 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26 WrapperNode [2020-09-25 02:01:26,803 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:01:26,804 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:01:26,804 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:01:26,804 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:01:26,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26" (1/1) ... [2020-09-25 02:01:26,824 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26" (1/1) ... [2020-09-25 02:01:26,830 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26" (1/1) ... [2020-09-25 02:01:26,831 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26" (1/1) ... [2020-09-25 02:01:26,836 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26" (1/1) ... [2020-09-25 02:01:26,838 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26" (1/1) ... [2020-09-25 02:01:26,839 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26" (1/1) ... [2020-09-25 02:01:26,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:01:26,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:01:26,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:01:26,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:01:26,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:01:27,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:01:27,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:01:27,010 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 02:01:27,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:01:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:01:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:01:27,010 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 02:01:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:01:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:01:27,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:01:27,223 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:01:27,223 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 02:01:27,228 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:27 BoogieIcfgContainer [2020-09-25 02:01:27,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:01:27,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:01:27,231 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:01:27,235 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:01:27,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:01:26" (1/3) ... [2020-09-25 02:01:27,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:27, skipping insertion in model container [2020-09-25 02:01:27,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:01:26" (2/3) ... [2020-09-25 02:01:27,237 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:01:27, skipping insertion in model container [2020-09-25 02:01:27,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:01:27" (3/3) ... [2020-09-25 02:01:27,240 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-2.c [2020-09-25 02:01:27,253 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:01:27,265 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:01:27,316 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:01:27,363 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:01:27,363 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:01:27,363 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:01:27,364 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:01:27,364 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:01:27,364 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:01:27,364 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:01:27,364 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:01:27,390 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 02:01:27,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 02:01:27,407 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:27,408 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:27,409 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:27,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:27,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 02:01:27,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:27,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-25 02:01:27,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:27,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 02:01:27,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:27,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 02:01:27,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:27,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:27,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:01:27,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:01:27,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:27,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:27,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:27,677 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:27,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:27,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:27,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:27,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:27,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:27,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:27,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:27,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:27,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 02:01:27,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:27,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:27,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:27,739 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:01:27,740 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-25 02:01:27,743 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:27,743 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:27,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271617329] [2020-09-25 02:01:27,751 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:27,752 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:27,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:27,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:27,774 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 02:01:27,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:27,900 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 02:01:27,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:01:27,903 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 02:01:27,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:27,923 INFO L225 Difference]: With dead ends: 44 [2020-09-25 02:01:27,924 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 02:01:27,933 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:27,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 02:01:28,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 02:01:28,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:28,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:28,025 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 02:01:28,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:28,027 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:28,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:28,028 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:28,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 02:01:28,034 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:28,035 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:28,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:01:28,036 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:28,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:28,036 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 02:01:28,037 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:28,038 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140226502] [2020-09-25 02:01:28,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:28,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:28,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:28,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 02:01:28,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:28,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-25 02:01:28,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:28,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:28,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:28,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:28,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:28,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:28,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:28,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:28,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:28,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:28,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:28,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:28,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:28,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:28,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:28,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:28,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:28,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:28,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 02:01:28,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:28,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:28,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 02:01:28,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140226502] [2020-09-25 02:01:28,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:28,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:01:28,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489057866] [2020-09-25 02:01:28,314 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:01:28,315 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:28,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:01:28,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:01:28,316 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 02:01:28,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:28,389 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 02:01:28,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:01:28,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 02:01:28,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:28,392 INFO L225 Difference]: With dead ends: 36 [2020-09-25 02:01:28,392 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:28,393 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:28,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:28,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 02:01:28,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 02:01:28,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 02:01:28,402 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 02:01:28,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:28,403 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 02:01:28,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:01:28,403 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 02:01:28,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:01:28,405 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:28,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:28,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:01:28,406 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:28,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:28,406 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 02:01:28,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:28,407 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105747770] [2020-09-25 02:01:28,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:28,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:28,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:28,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 02:01:29,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:29,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 624 [2020-09-25 02:01:29,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 02:01:29,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:29,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:01:29,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:29,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:29,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:29,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:29,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 02:01:29,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 02:01:29,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 02:01:29,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:29,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:29,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 02:01:29,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:01:29,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 02:01:29,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:29,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:01:29,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:29,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 02:01:29,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:29,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 02:01:29,267 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105747770] [2020-09-25 02:01:29,267 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:29,267 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 02:01:29,268 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161316821] [2020-09-25 02:01:29,269 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:01:29,270 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:29,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:01:29,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:01:29,275 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 02:01:29,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:29,391 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 02:01:29,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:29,392 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 02:01:29,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:29,393 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:01:29,393 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 02:01:29,395 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:01:29,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 02:01:29,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 02:01:29,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 02:01:29,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 02:01:29,404 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 02:01:29,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:29,404 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 02:01:29,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:01:29,404 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 02:01:29,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 02:01:29,406 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:29,406 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:29,407 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:01:29,407 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:29,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:29,408 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 02:01:29,408 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:29,408 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089872852] [2020-09-25 02:01:29,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:29,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 02:01:29,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:29,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 428 [2020-09-25 02:01:29,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:29,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:29,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:29,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:29,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:29,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:29,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:29,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:29,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:29,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:29,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:29,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:29,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:29,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:30,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:30,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:30,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-25 02:01:30,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:30,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:30,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:30,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:30,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:30,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:30,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:30,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:30,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:30,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 02:01:30,271 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:30,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:30,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:30,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:30,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:30,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:30,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:30,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:30,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:30,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:30,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 02:01:30,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:30,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:30,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:30,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:30,331 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:01:30,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089872852] [2020-09-25 02:01:30,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:30,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:01:30,335 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824946301] [2020-09-25 02:01:30,337 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:01:30,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:30,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:01:30,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:01:30,340 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 02:01:30,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:30,445 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 02:01:30,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:30,447 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 02:01:30,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:30,449 INFO L225 Difference]: With dead ends: 42 [2020-09-25 02:01:30,449 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 02:01:30,451 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:01:30,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 02:01:30,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 02:01:30,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 02:01:30,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 02:01:30,465 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 02:01:30,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:30,466 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 02:01:30,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:01:30,466 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 02:01:30,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:01:30,474 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:30,474 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:30,475 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 02:01:30,476 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:30,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:30,477 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 02:01:30,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:30,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635439392] [2020-09-25 02:01:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:30,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:30,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 02:01:31,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:31,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 546 [2020-09-25 02:01:31,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:31,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 02:01:31,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:31,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:31,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:31,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:01:31,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:31,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:31,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:31,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 02:01:31,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 02:01:31,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 531 [2020-09-25 02:01:31,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:31,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 02:01:31,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:31,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:31,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:31,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:31,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 02:01:31,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:31,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:31,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:31,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:31,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:31,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:31,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:31,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 02:01:31,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:31,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:01:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:31,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:31,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 02:01:31,753 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635439392] [2020-09-25 02:01:31,754 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:01:31,754 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 02:01:31,755 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442790311] [2020-09-25 02:01:31,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 02:01:31,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:31,756 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 02:01:31,757 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 02:01:31,757 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 8 states. [2020-09-25 02:01:31,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:31,918 INFO L93 Difference]: Finished difference Result 75 states and 95 transitions. [2020-09-25 02:01:31,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 02:01:31,921 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 02:01:31,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:31,925 INFO L225 Difference]: With dead ends: 75 [2020-09-25 02:01:31,925 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:01:31,927 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 02:01:31,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:01:31,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:01:31,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:01:31,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:01:31,944 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 02:01:31,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:31,945 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:01:31,945 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 02:01:31,945 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:01:31,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 02:01:31,947 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:31,947 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:31,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 02:01:31,948 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:31,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:31,948 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 02:01:31,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:31,949 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1121156424] [2020-09-25 02:01:31,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:31,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:31,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:32,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:34,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 02:01:34,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:34,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2108 [2020-09-25 02:01:34,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:34,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:01:34,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:34,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:34,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:34,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:34,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:34,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:34,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:34,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:34,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:34,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:34,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:34,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:34,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:34,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:36,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:36,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1933 [2020-09-25 02:01:36,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:36,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:36,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:36,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:36,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:36,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:36,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:36,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:36,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 02:01:36,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:36,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:36,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:36,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:36,130 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:36,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:36,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:36,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:36,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:36,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:36,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:36,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:36,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:36,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:36,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:36,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:36,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:01:36,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:36,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:36,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:36,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:36,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:36,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:36,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:36,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:36,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:01:36,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:36,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 02:01:36,209 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1121156424] [2020-09-25 02:01:36,210 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:36,210 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 02:01:36,210 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665550503] [2020-09-25 02:01:36,212 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 02:01:36,212 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:36,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 02:01:36,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 02:01:36,213 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 02:01:36,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:36,351 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-09-25 02:01:36,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 02:01:36,352 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 02:01:36,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:36,354 INFO L225 Difference]: With dead ends: 52 [2020-09-25 02:01:36,354 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 02:01:36,356 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 02:01:36,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 02:01:36,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-25 02:01:36,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 02:01:36,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 02:01:36,371 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-25 02:01:36,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:36,374 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 02:01:36,374 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 02:01:36,374 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 02:01:36,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 02:01:36,377 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:36,377 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:36,380 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 02:01:36,380 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:36,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:36,381 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 02:01:36,381 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:36,381 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1171374008] [2020-09-25 02:01:36,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:36,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:36,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:39,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:41,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 02:01:41,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:01:41,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 02:01:41,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:41,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:41,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 02:01:41,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:41,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:41,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:41,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:41,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:41,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:41,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:41,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:41,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:41,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:41,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:41,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:42,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:46,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 02:01:46,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:01:46,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 02:01:46,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:01:46,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:46,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 02:01:46,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:01:46,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:46,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:46,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:46,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:46,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:01:46,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-09-25 02:01:46,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 02:01:46,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:46,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:01:46,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:46,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:46,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:46,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:46,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:46,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:01:46,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:46,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:46,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:46,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:47,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:47,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:47,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:47,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:47,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:47,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:01:47,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:47,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:47,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:01:47,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:47,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:47,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:47,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:47,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:01:47,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:01:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 644 [2020-09-25 02:01:47,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 02:01:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:01:47,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 02:01:47,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:47,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:47,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:47,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:47,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:01:47,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:47,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 02:01:47,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:01:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:47,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 02:01:47,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:47,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:47,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:47,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:47,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:47,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:47,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 02:01:47,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:47,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:47,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:47,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:01:47,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:47,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:47,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:01:47,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:01:47,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:47,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:47,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:47,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:01:47,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:47,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:47,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:47,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:01:47,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:01:47,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 02:01:47,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:01:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:47,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:01:47,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:47,830 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 69 proven. 81 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-09-25 02:01:47,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1171374008] [2020-09-25 02:01:47,831 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:01:47,831 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 02:01:47,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700927928] [2020-09-25 02:01:47,832 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 02:01:47,832 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:01:47,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 02:01:47,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 02:01:47,833 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 12 states. [2020-09-25 02:01:48,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:01:48,063 INFO L93 Difference]: Finished difference Result 96 states and 132 transitions. [2020-09-25 02:01:48,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 02:01:48,064 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 87 [2020-09-25 02:01:48,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:01:48,066 INFO L225 Difference]: With dead ends: 96 [2020-09-25 02:01:48,066 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 02:01:48,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2020-09-25 02:01:48,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 02:01:48,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-25 02:01:48,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 02:01:48,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-09-25 02:01:48,076 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 87 [2020-09-25 02:01:48,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:01:48,077 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-09-25 02:01:48,077 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 02:01:48,077 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-09-25 02:01:48,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 02:01:48,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:01:48,079 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:01:48,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 02:01:48,079 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:01:48,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:01:48,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 02:01:48,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:01:48,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [77002844] [2020-09-25 02:01:48,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:01:48,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:48,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:48,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:49,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:50,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:50,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:53,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 02:01:53,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 02:01:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 02:01:53,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:01:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:01:53,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-25 02:01:53,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:53,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:01:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:53,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:53,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:01:53,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:01:53,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:01:53,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:01:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:01:53,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:01:53,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:53,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:01:53,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:53,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:53,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:56,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:57,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:01:58,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 02:01:58,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 02:01:58,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:01:58,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:01:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:01:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:01:58,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 02:01:58,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:01:58,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:01:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:01:58,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:01:58,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:02,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:02,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 02:02:02,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4555 [2020-09-25 02:02:02,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:02,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:02:02,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:02,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:02,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:02,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:02,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:03,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:03,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-09-25 02:02:03,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:03,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:03,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:03,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:03,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 02:02:03,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:03,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:03,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:03,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:03,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:03,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:03,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 02:02:03,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:03,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:03,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:03,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:03,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:03,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:03,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:03,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:02:03,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:03,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:03,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:03,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:02:03,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:03,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:03,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:04,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:04,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:04,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:05,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:08,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 02:02:08,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 02:02:08,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 02:02:08,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 02:02:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:08,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 02:02:08,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:08,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:08,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:08,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:08,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:09,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 02:02:09,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 02:02:09,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1212 [2020-09-25 02:02:09,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 02:02:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:09,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 02:02:09,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:09,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:09,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:09,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 02:02:09,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:02:09,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 229 [2020-09-25 02:02:09,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 02:02:09,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:09,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 02:02:09,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:09,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:09,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:09,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:09,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 02:02:09,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:02:09,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:09,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 02:02:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:09,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 02:02:09,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:02:09,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 02:02:09,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:09,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:09,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:02:09,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:09,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 02:02:09,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:09,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:09,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 02:02:09,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:09,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 02:02:09,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:09,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:09,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:09,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:09,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 02:02:09,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:09,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 02:02:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:09,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:09,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:09,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 02:02:09,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:09,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:09,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:09,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 02:02:09,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:09,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 02:02:09,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:02:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 02:02:09,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 02:02:09,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:10,009 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 172 proven. 184 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-09-25 02:02:10,009 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [77002844] [2020-09-25 02:02:10,009 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 02:02:10,009 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 02:02:10,010 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746643273] [2020-09-25 02:02:10,011 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 02:02:10,011 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:02:10,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 02:02:10,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-09-25 02:02:10,012 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 16 states. [2020-09-25 02:02:10,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:02:10,559 INFO L93 Difference]: Finished difference Result 112 states and 146 transitions. [2020-09-25 02:02:10,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 02:02:10,560 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2020-09-25 02:02:10,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:02:10,562 INFO L225 Difference]: With dead ends: 112 [2020-09-25 02:02:10,562 INFO L226 Difference]: Without dead ends: 70 [2020-09-25 02:02:10,563 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=139, Invalid=461, Unknown=0, NotChecked=0, Total=600 [2020-09-25 02:02:10,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-25 02:02:10,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 70. [2020-09-25 02:02:10,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 02:02:10,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 80 transitions. [2020-09-25 02:02:10,573 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 80 transitions. Word has length 123 [2020-09-25 02:02:10,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:02:10,574 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 80 transitions. [2020-09-25 02:02:10,574 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 02:02:10,574 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 80 transitions. [2020-09-25 02:02:10,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 02:02:10,575 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:02:10,576 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:02:10,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 02:02:10,576 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:02:10,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:02:10,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1001388386, now seen corresponding path program 5 times [2020-09-25 02:02:10,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:02:10,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1019621660] [2020-09-25 02:02:10,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:02:10,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:10,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:10,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:10,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:10,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:11,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:15,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:15,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-09-25 02:02:15,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 02:02:15,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-09-25 02:02:15,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:15,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 02:02:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 02:02:15,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 02:02:15,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:15,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:02:15,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:15,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:15,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:15,687 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 02:02:15,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:02:15,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 02:02:15,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:15,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:02:15,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:02:15,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:02:15,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:15,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 02:02:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:15,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:15,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:15,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:16,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:17,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:02:20,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-09-25 02:02:20,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 02:02:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 02:02:20,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:02:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 02:02:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 02:02:20,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 02:02:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 02:02:20,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 02:02:20,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:02:20,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:20,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:02:21,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking...