/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:33:46,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:33:46,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:33:46,068 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:33:46,069 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:33:46,076 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:33:46,078 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:33:46,082 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:33:46,084 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:33:46,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:33:46,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:33:46,090 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:33:46,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:33:46,093 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:33:46,095 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:33:46,096 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:33:46,098 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:33:46,100 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:33:46,101 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:33:46,109 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:33:46,112 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:33:46,113 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:33:46,114 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:33:46,115 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:33:46,131 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:33:46,131 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:33:46,131 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:33:46,132 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:33:46,133 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:33:46,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:33:46,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:33:46,138 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:33:46,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:33:46,143 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:33:46,145 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:33:46,145 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:33:46,146 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:33:46,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:33:46,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:33:46,147 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:33:46,148 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:33:46,150 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 21:33:46,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:33:46,192 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:33:46,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:33:46,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:33:46,194 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:33:46,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:33:46,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:33:46,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:33:46,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:33:46,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:33:46,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:33:46,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:33:46,196 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:33:46,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:33:46,197 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:33:46,197 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:33:46,197 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:33:46,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:33:46,198 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:33:46,198 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:33:46,198 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:33:46,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:33:46,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:33:46,199 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:33:46,199 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:33:46,199 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:33:46,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:33:46,199 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:33:46,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:33:46,200 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:33:46,620 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:33:46,646 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:33:46,650 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:33:46,653 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:33:46,653 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:33:46,654 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-24 21:33:46,743 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/053f3158b/fae4a77896e6408eb7482fac9072e3f6/FLAG93df28152 [2020-09-24 21:33:47,256 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:33:47,257 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_7-2.c [2020-09-24 21:33:47,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/053f3158b/fae4a77896e6408eb7482fac9072e3f6/FLAG93df28152 [2020-09-24 21:33:47,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/053f3158b/fae4a77896e6408eb7482fac9072e3f6 [2020-09-24 21:33:47,609 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:33:47,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:33:47,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:33:47,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:33:47,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:33:47,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:33:47" (1/1) ... [2020-09-24 21:33:47,625 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 24.09 09:33:47, skipping insertion in model container [2020-09-24 21:33:47,625 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:33:47" (1/1) ... [2020-09-24 21:33:47,634 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:33:47,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:33:47,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:33:47,871 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:33:47,890 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:33:47,905 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:33:47,906 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47 WrapperNode [2020-09-24 21:33:47,906 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:33:47,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:33:47,907 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:33:47,907 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:33:47,920 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47" (1/1) ... [2020-09-24 21:33:47,921 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47" (1/1) ... [2020-09-24 21:33:47,927 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47" (1/1) ... [2020-09-24 21:33:47,927 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47" (1/1) ... [2020-09-24 21:33:47,931 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47" (1/1) ... [2020-09-24 21:33:47,934 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47" (1/1) ... [2020-09-24 21:33:47,935 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47" (1/1) ... [2020-09-24 21:33:47,937 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:33:47,937 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:33:47,937 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:33:47,937 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:33:47,938 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:33:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:33:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:33:48,097 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 21:33:48,098 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:33:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:33:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:33:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 21:33:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:33:48,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:33:48,099 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:33:48,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:33:48,315 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 21:33:48,321 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:33:48 BoogieIcfgContainer [2020-09-24 21:33:48,321 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:33:48,322 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:33:48,323 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:33:48,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:33:48,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:33:47" (1/3) ... [2020-09-24 21:33:48,329 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 24.09 09:33:48, skipping insertion in model container [2020-09-24 21:33:48,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:33:47" (2/3) ... [2020-09-24 21:33:48,329 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 24.09 09:33:48, skipping insertion in model container [2020-09-24 21:33:48,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:33:48" (3/3) ... [2020-09-24 21:33:48,332 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_7-2.c [2020-09-24 21:33:48,345 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:33:48,354 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:33:48,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:33:48,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:33:48,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:33:48,435 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:33:48,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:33:48,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:33:48,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:33:48,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:33:48,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:33:48,461 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 21:33:48,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 21:33:48,471 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:48,472 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:48,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:48,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:48,481 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 21:33:48,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:48,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-24 21:33:48,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:48,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:48,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 21:33:48,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:33:48,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-24 21:33:48,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:48,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:48,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:48,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:33:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:33:48,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:48,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:48,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:48,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:48,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:48,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:48,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:48,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:48,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:48,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:48,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:48,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:48,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 21:33:48,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:48,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:48,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:48,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:48,946 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:33:48,947 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-24 21:33:48,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:33:48,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:33:48,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4854562] [2020-09-24 21:33:48,958 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:33:48,958 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:48,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:33:48,977 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:33:48,980 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 21:33:49,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:49,111 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 21:33:49,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:33:49,114 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 21:33:49,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:49,128 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:33:49,128 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 21:33:49,133 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 [2020-09-24 21:33:49,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 21:33:49,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 21:33:49,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:33:49,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:33:49,191 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 21:33:49,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:49,191 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:33:49,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:33:49,192 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:33:49,194 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 21:33:49,194 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:49,195 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:33:49,195 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:33:49,195 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:49,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:49,196 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 21:33:49,196 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:49,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [354402084] [2020-09-24 21:33:49,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:49,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:49,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:49,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 21:33:49,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:33:49,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-24 21:33:49,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:49,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:49,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 21:33:49,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:49,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:49,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:49,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:49,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:49,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 21:33:49,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:49,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:49,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:49,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:49,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:49,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:49,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:49,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:49,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:49,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 21:33:49,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:33:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:49,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:33:49,511 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [354402084] [2020-09-24 21:33:49,511 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:33:49,511 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:33:49,512 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679489058] [2020-09-24 21:33:49,514 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:33:49,514 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:49,514 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:33:49,514 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:33:49,515 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 21:33:49,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:49,580 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 21:33:49,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:33:49,581 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 21:33:49,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:49,582 INFO L225 Difference]: With dead ends: 36 [2020-09-24 21:33:49,582 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 21:33:49,584 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 [2020-09-24 21:33:49,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 21:33:49,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 21:33:49,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 21:33:49,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 21:33:49,593 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 21:33:49,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:49,593 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 21:33:49,594 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:33:49,594 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 21:33:49,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 21:33:49,596 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:49,596 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] [2020-09-24 21:33:49,596 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:33:49,597 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:49,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:49,597 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 21:33:49,597 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:49,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1646418088] [2020-09-24 21:33:49,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:49,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:49,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:49,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:51,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:33:51,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:33:51,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1751 [2020-09-24 21:33:51,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:51,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:51,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:51,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 21:33:51,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:51,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:51,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:51,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:51,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:51,389 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:51,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:51,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:51,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:51,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:51,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:51,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:33:51,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:33:51,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-24 21:33:51,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:51,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:51,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:33:51,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:51,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:51,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:51,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:51,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:51,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:51,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:33:51,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:51,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:51,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:51,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:33:51,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:51,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:51,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:33:51,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:51,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:33:51,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:51,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:33:51,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:33:51,710 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1646418088] [2020-09-24 21:33:51,715 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:51,716 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:33:51,716 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037490036] [2020-09-24 21:33:51,717 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:33:51,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:51,718 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:33:51,719 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:33:51,719 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 21:33:51,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:51,898 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 21:33:51,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:33:51,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 21:33:51,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:51,900 INFO L225 Difference]: With dead ends: 44 [2020-09-24 21:33:51,901 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 21:33:51,901 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:33:51,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 21:33:51,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 21:33:51,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 21:33:51,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 21:33:51,912 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 21:33:51,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:51,913 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 21:33:51,913 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:33:51,913 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 21:33:51,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:33:51,915 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:51,915 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] [2020-09-24 21:33:51,915 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:33:51,916 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:51,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:51,916 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 21:33:51,916 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:51,917 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [738987674] [2020-09-24 21:33:51,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:51,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:51,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:51,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:52,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:53,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 21:33:53,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:33:53,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1664 [2020-09-24 21:33:53,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:53,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:53,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:53,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 21:33:53,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:53,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:53,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:53,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:53,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:53,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:53,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:33:53,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:53,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:53,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:53,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:53,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:53,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:53,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:54,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 21:33:54,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:33:54,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-09-24 21:33:54,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:33:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:33:54,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:33:54,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:54,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:33:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:54,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:54,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:54,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:54,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:33:54,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:33:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:54,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:33:54,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:33:54,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:33:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:54,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:54,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:33:54,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:54,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 21:33:54,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:33:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:54,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:33:54,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:54,193 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 21:33:54,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [738987674] [2020-09-24 21:33:54,196 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:33:54,196 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 21:33:54,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114528516] [2020-09-24 21:33:54,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 21:33:54,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:33:54,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 21:33:54,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:33:54,200 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-24 21:33:54,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:33:54,335 INFO L93 Difference]: Finished difference Result 76 states and 100 transitions. [2020-09-24 21:33:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 21:33:54,336 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 21:33:54,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:33:54,339 INFO L225 Difference]: With dead ends: 76 [2020-09-24 21:33:54,339 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 21:33:54,340 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 [2020-09-24 21:33:54,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 21:33:54,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 56. [2020-09-24 21:33:54,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 21:33:54,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 75 transitions. [2020-09-24 21:33:54,355 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 75 transitions. Word has length 35 [2020-09-24 21:33:54,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:33:54,355 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 75 transitions. [2020-09-24 21:33:54,355 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 21:33:54,355 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 75 transitions. [2020-09-24 21:33:54,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 21:33:54,358 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:33:54,359 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-24 21:33:54,359 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:33:54,359 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:33:54,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:33:54,359 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 21:33:54,360 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:33:54,360 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228018613] [2020-09-24 21:33:54,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:33:54,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:54,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:54,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:57,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:59,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 21:33:59,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:33:59,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:33:59,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:33:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:33:59,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 21:33:59,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:59,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:33:59,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:33:59,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:33:59,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:33:59,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:33:59,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:33:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:33:59,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:33:59,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:33:59,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:33:59,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:33:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:33:59,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:33:59,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:00,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:03,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 21:34:03,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:34:03,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3622 [2020-09-24 21:34:03,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:34:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:34:03,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:34:03,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:03,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:03,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:03,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:34:03,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:34:03,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-24 21:34:03,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:03,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:34:03,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:03,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:03,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:03,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:03,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:03,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:34:03,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:03,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:34:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:03,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:34:03,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:03,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:03,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:03,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:34:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:34:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:03,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:34:03,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:03,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:03,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:34:03,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:03,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:34:03,201 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:03,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:34:03,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:03,211 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 6 proven. 31 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 21:34:03,211 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228018613] [2020-09-24 21:34:03,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:03,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:34:03,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662334098] [2020-09-24 21:34:03,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:34:03,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:03,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:34:03,213 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:34:03,214 INFO L87 Difference]: Start difference. First operand 56 states and 75 transitions. Second operand 8 states. [2020-09-24 21:34:03,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:03,341 INFO L93 Difference]: Finished difference Result 102 states and 144 transitions. [2020-09-24 21:34:03,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:34:03,344 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 21:34:03,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:03,346 INFO L225 Difference]: With dead ends: 102 [2020-09-24 21:34:03,346 INFO L226 Difference]: Without dead ends: 52 [2020-09-24 21:34:03,351 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:34:03,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-24 21:34:03,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 46. [2020-09-24 21:34:03,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 21:34:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-09-24 21:34:03,370 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 51 [2020-09-24 21:34:03,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:03,371 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-09-24 21:34:03,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:34:03,371 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-09-24 21:34:03,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 21:34:03,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:03,375 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] [2020-09-24 21:34:03,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:34:03,376 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:03,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:03,376 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 21:34:03,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:03,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118224156] [2020-09-24 21:34:03,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:03,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:03,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:03,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:04,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:08,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:08,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 21:34:08,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:34:08,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 21:34:08,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:08,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:34:08,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:34:08,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:34:08,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:08,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:08,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:08,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:08,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:08,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:08,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:08,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:08,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:08,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:08,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:08,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:34:08,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:08,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:08,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:08,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:09,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:09,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 21:34:09,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:34:09,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1314 [2020-09-24 21:34:09,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:34:09,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:34:09,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:34:09,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:09,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:09,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:09,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:10,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 21:34:10,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:34:10,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-24 21:34:10,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 21:34:10,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:10,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 21:34:10,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:10,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:10,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:10,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:10,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:34:10,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:10,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 21:34:10,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:10,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:34:10,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:10,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 21:34:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:10,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:10,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:10,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:10,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 21:34:10,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:10,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:34:10,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:10,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 21:34:10,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:10,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:10,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:34:10,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:10,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:34:10,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:10,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:34:10,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:10,191 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 31 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 21:34:10,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118224156] [2020-09-24 21:34:10,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:10,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:34:10,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1051465672] [2020-09-24 21:34:10,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:34:10,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:10,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:34:10,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:34:10,194 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 9 states. [2020-09-24 21:34:10,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:10,341 INFO L93 Difference]: Finished difference Result 72 states and 91 transitions. [2020-09-24 21:34:10,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 21:34:10,342 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 21:34:10,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:10,346 INFO L225 Difference]: With dead ends: 72 [2020-09-24 21:34:10,347 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 21:34:10,348 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-24 21:34:10,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 21:34:10,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2020-09-24 21:34:10,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-24 21:34:10,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 75 transitions. [2020-09-24 21:34:10,370 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 75 transitions. Word has length 52 [2020-09-24 21:34:10,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:10,370 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 75 transitions. [2020-09-24 21:34:10,371 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:34:10,371 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 75 transitions. [2020-09-24 21:34:10,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-09-24 21:34:10,375 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:10,376 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:10,376 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 21:34:10,376 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:10,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:10,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1607002557, now seen corresponding path program 3 times [2020-09-24 21:34:10,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:10,377 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011126318] [2020-09-24 21:34:10,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:10,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:10,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:10,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:11,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:12,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:13,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:13,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:14,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:14,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:15,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-24 21:34:15,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-09-24 21:34:15,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-09-24 21:34:15,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:34:15,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:34:15,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 21:34:15,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:15,437 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:15,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:15,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:15,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:15,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:15,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:15,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:15,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:15,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:34:15,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:15,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:16,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:16,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:16,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:20,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-24 21:34:20,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 21:34:20,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-09-24 21:34:20,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:34:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 21:34:20,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-24 21:34:20,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:20,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:20,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:20,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:21,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:21,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:22,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:22,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:34:22,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 21:34:22,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2239 [2020-09-24 21:34:22,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 21:34:22,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:22,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:34:22,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:22,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:22,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:22,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:22,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:23,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:34:23,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:34:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-09-24 21:34:23,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:34:23,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:23,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 21:34:23,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:23,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:23,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:23,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:23,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:23,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:34:23,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:23,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:23,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:34:23,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:34:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:23,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:23,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:23,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:23,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:34:23,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:23,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:23,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:34:23,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:23,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:34:23,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:23,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:23,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:23,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:23,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:34:23,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:23,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:23,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:34:23,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:34:23,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 21:34:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:23,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:23,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:24,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:24,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:25,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:25,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:25,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:26,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:28,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:28,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:34:28,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 21:34:28,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 21:34:28,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:34:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 21:34:28,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-24 21:34:28,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:28,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:28,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:28,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:28,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:28,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:28,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:28,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:30,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:30,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 21:34:30,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:34:30,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1655 [2020-09-24 21:34:30,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:34:30,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:30,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 21:34:30,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:30,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:30,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:30,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:30,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:30,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:30,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 21:34:30,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:34:30,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 21:34:30,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:30,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:30,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 21:34:30,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:30,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 21:34:30,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:30,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:30,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:30,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:30,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:34:30,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:30,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:30,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:30,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 21:34:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:30,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:30,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:30,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:30,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:30,201 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 21:34:30,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:30,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:30,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:30,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 21:34:30,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:30,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:30,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:30,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 21:34:30,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:30,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 21:34:30,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:30,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:30,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:34:30,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:30,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-09-24 21:34:30,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:30,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:30,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:30,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:34:30,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:30,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 21:34:30,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:34:30,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:30,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:34:30,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:30,269 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 109 proven. 181 refuted. 0 times theorem prover too weak. 163 trivial. 0 not checked. [2020-09-24 21:34:30,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011126318] [2020-09-24 21:34:30,270 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:34:30,270 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-24 21:34:30,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787530797] [2020-09-24 21:34:30,271 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-24 21:34:30,272 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:34:30,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-24 21:34:30,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=214, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:34:30,272 INFO L87 Difference]: Start difference. First operand 58 states and 75 transitions. Second operand 17 states. [2020-09-24 21:34:30,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:34:30,922 INFO L93 Difference]: Finished difference Result 132 states and 210 transitions. [2020-09-24 21:34:30,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-24 21:34:30,924 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 119 [2020-09-24 21:34:30,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:34:30,928 INFO L225 Difference]: With dead ends: 132 [2020-09-24 21:34:30,928 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 21:34:30,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=191, Invalid=565, Unknown=0, NotChecked=0, Total=756 [2020-09-24 21:34:30,931 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 21:34:30,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 70. [2020-09-24 21:34:30,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 21:34:30,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 87 transitions. [2020-09-24 21:34:30,942 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 87 transitions. Word has length 119 [2020-09-24 21:34:30,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:34:30,943 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 87 transitions. [2020-09-24 21:34:30,943 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-24 21:34:30,943 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 87 transitions. [2020-09-24 21:34:30,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-24 21:34:30,946 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:34:30,946 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 17, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 7, 7, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:34:30,947 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 21:34:30,947 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:34:30,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:34:30,947 INFO L82 PathProgramCache]: Analyzing trace with hash 532445701, now seen corresponding path program 4 times [2020-09-24 21:34:30,948 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:34:30,948 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [367036785] [2020-09-24 21:34:30,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:34:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:31,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:31,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:31,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:31,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:31,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:31,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:32,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:32,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:32,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:33,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:34,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:34,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:34,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:35,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:35,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-09-24 21:34:35,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-24 21:34:35,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-09-24 21:34:35,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 21:34:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:34:35,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 21:34:35,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:36,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:34:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:36,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:34:36,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 21:34:36,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:34:36,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 21:34:36,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:34:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:34:36,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:34:36,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:34:36,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:34:36,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 21:34:36,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:34:36,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:36,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:37,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:37,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:34:37,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking...