/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:47:09,642 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:47:09,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:47:09,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:47:09,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:47:09,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:47:09,676 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:47:09,678 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:47:09,680 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:47:09,681 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:47:09,682 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:47:09,684 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:47:09,684 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:47:09,685 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:47:09,687 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:47:09,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:47:09,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:47:09,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:47:09,692 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:47:09,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:47:09,700 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:47:09,704 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:47:09,707 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:47:09,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:47:09,711 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:47:09,716 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:47:09,716 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:47:09,717 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:47:09,720 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:47:09,721 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:47:09,721 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:47:09,722 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:47:09,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:47:09,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:47:09,727 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:47:09,727 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:47:09,730 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:47:09,731 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:47:09,731 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:47:09,732 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:47:09,734 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:47:09,735 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 23:47:09,784 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:47:09,785 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:47:09,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:47:09,787 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:47:09,787 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:47:09,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:47:09,788 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:47:09,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:47:09,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:47:09,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:47:09,790 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:47:09,790 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:47:09,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:47:09,791 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:47:09,791 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:47:09,791 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:47:09,791 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:47:09,791 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:47:09,792 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:47:09,792 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:47:09,792 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:47:09,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:47:09,793 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:47:09,793 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:47:09,793 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:47:09,793 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:47:09,793 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:47:09,794 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:47:09,794 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:47:09,794 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-24 23:47:10,268 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:47:10,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:47:10,290 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:47:10,292 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:47:10,292 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:47:10,294 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-24 23:47:10,386 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8471d83b/9cd31d60353b45e0a74add6a28ac94c1/FLAGecb94f7ac [2020-09-24 23:47:10,908 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:47:10,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-24 23:47:10,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8471d83b/9cd31d60353b45e0a74add6a28ac94c1/FLAGecb94f7ac [2020-09-24 23:47:11,256 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a8471d83b/9cd31d60353b45e0a74add6a28ac94c1 [2020-09-24 23:47:11,270 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:47:11,276 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:47:11,278 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:47:11,278 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:47:11,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:47:11,285 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:47:11" (1/1) ... [2020-09-24 23:47:11,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@180772d7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11, skipping insertion in model container [2020-09-24 23:47:11,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:47:11" (1/1) ... [2020-09-24 23:47:11,301 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:47:11,328 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:47:11,565 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:47:11,572 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:47:11,588 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:47:11,604 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:47:11,605 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11 WrapperNode [2020-09-24 23:47:11,605 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:47:11,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:47:11,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:47:11,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:47:11,621 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11" (1/1) ... [2020-09-24 23:47:11,622 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11" (1/1) ... [2020-09-24 23:47:11,628 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11" (1/1) ... [2020-09-24 23:47:11,628 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11" (1/1) ... [2020-09-24 23:47:11,633 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11" (1/1) ... [2020-09-24 23:47:11,635 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11" (1/1) ... [2020-09-24 23:47:11,637 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11" (1/1) ... [2020-09-24 23:47:11,638 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:47:11,638 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:47:11,639 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:47:11,639 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:47:11,640 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11" (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 23:47:11,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:47:11,806 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:47:11,806 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 23:47:11,807 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:47:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:47:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:47:11,807 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 23:47:11,808 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:47:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:47:11,809 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:47:12,049 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:47:12,049 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 23:47:12,055 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:47:12 BoogieIcfgContainer [2020-09-24 23:47:12,056 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:47:12,057 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:47:12,057 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:47:12,061 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:47:12,062 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:47:11" (1/3) ... [2020-09-24 23:47:12,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f260b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:47:12, skipping insertion in model container [2020-09-24 23:47:12,063 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:47:11" (2/3) ... [2020-09-24 23:47:12,063 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f260b4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:47:12, skipping insertion in model container [2020-09-24 23:47:12,064 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:47:12" (3/3) ... [2020-09-24 23:47:12,066 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-24 23:47:12,079 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:47:12,092 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:47:12,135 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:47:12,188 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:47:12,188 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:47:12,189 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:47:12,189 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:47:12,189 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:47:12,189 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:47:12,189 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:47:12,190 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:47:12,220 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 23:47:12,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 23:47:12,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:12,230 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:12,231 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:12,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 23:47:12,248 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:12,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [707335143] [2020-09-24 23:47:12,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:12,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:12,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:12,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:47:12,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:12,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 23:47:12,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 23:47:12,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:47:12,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:12,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:12,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:12,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:12,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:47:12,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:12,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:12,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:12,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:12,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:12,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:12,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:12,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:12,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:12,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:12,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 23:47:12,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:12,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:12,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:12,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:12,603 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 23:47:12,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [707335143] [2020-09-24 23:47:12,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:47:12,607 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:47:12,608 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1710003618] [2020-09-24 23:47:12,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:47:12,616 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:12,632 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:47:12,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:47:12,636 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 23:47:12,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:12,761 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 23:47:12,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:47:12,763 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 23:47:12,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:12,777 INFO L225 Difference]: With dead ends: 44 [2020-09-24 23:47:12,777 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 23:47:12,782 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 23:47:12,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 23:47:12,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 23:47:12,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:47:12,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:47:12,847 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 23:47:12,847 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:12,848 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:47:12,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:47:12,848 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:47:12,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 23:47:12,851 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:12,851 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 23:47:12,852 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:47:12,852 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:12,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:12,852 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 23:47:12,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:12,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616902719] [2020-09-24 23:47:12,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:12,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:13,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:13,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 23:47:13,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 23:47:13,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:13,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:13,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:13,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:13,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:13,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:13,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:13,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:13,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:47:13,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:13,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:13,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:13,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:13,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:13,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:13,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:13,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:13,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:13,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:13,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 23:47:13,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:47:13,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:13,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:13,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:13,153 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 23:47:13,153 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616902719] [2020-09-24 23:47:13,158 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:47:13,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 23:47:13,159 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585978360] [2020-09-24 23:47:13,161 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 23:47:13,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:13,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 23:47:13,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 23:47:13,164 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 23:47:13,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:13,246 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 23:47:13,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 23:47:13,247 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 23:47:13,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:13,249 INFO L225 Difference]: With dead ends: 36 [2020-09-24 23:47:13,249 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 23:47:13,251 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 23:47:13,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 23:47:13,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 23:47:13,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 23:47:13,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 23:47:13,260 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 23:47:13,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:13,260 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 23:47:13,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 23:47:13,261 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 23:47:13,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 23:47:13,263 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:13,263 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 23:47:13,263 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:47:13,264 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:13,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:13,264 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 23:47:13,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:13,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635862821] [2020-09-24 23:47:13,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:13,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:13,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:13,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:13,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:13,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:13,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 23:47:13,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:13,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-09-24 23:47:13,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:13,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:13,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:47:13,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 23:47:13,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:13,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:13,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:13,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:13,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:13,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:47:13,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:13,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:13,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:13,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:13,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:13,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:14,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:47:14,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:14,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-09-24 23:47:14,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:14,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 23:47:14,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:14,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:14,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:14,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:14,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:14,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:14,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 23:47:14,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:14,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:14,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:14,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:47:14,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:14,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:14,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:14,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:14,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 23:47:14,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:14,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:14,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:14,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:14,248 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 23:47:14,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635862821] [2020-09-24 23:47:14,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:14,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:47:14,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1654092159] [2020-09-24 23:47:14,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:47:14,250 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:14,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:47:14,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:47:14,251 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 23:47:14,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:14,402 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 23:47:14,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 23:47:14,403 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 23:47:14,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:14,406 INFO L225 Difference]: With dead ends: 44 [2020-09-24 23:47:14,406 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 23:47:14,407 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 23:47:14,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 23:47:14,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 23:47:14,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 23:47:14,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 23:47:14,418 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 23:47:14,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:14,419 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 23:47:14,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:47:14,419 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 23:47:14,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 23:47:14,421 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:14,421 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 23:47:14,422 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:47:14,422 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:14,422 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:14,422 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 23:47:14,423 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:14,423 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1323092349] [2020-09-24 23:47:14,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:14,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:14,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:14,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:14,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 23:47:14,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:47:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 543 [2020-09-24 23:47:14,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 23:47:14,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:14,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:15,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:15,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:15,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:47:15,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:15,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:15,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:15,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:15,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:15,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:15,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:15,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 23:47:15,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:47:15,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 536 [2020-09-24 23:47:15,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:15,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:15,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:15,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:47:15,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:15,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:15,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:15,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:15,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:15,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:15,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 23:47:15,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:15,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:15,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:15,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:15,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:15,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:15,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:15,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:47:15,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:15,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:15,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:15,683 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 23:47:15,685 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1323092349] [2020-09-24 23:47:15,686 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:15,686 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 23:47:15,687 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379268345] [2020-09-24 23:47:15,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 23:47:15,689 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:15,689 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 23:47:15,691 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 23:47:15,691 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 7 states. [2020-09-24 23:47:15,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:15,832 INFO L93 Difference]: Finished difference Result 88 states and 137 transitions. [2020-09-24 23:47:15,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 23:47:15,833 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 23:47:15,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:15,836 INFO L225 Difference]: With dead ends: 88 [2020-09-24 23:47:15,836 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 23:47:15,838 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:47:15,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 23:47:15,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-24 23:47:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 23:47:15,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 69 transitions. [2020-09-24 23:47:15,854 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 69 transitions. Word has length 35 [2020-09-24 23:47:15,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:15,855 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 69 transitions. [2020-09-24 23:47:15,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 23:47:15,855 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 69 transitions. [2020-09-24 23:47:15,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 23:47:15,858 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:15,859 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 23:47:15,859 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 23:47:15,859 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:15,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:15,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 23:47:15,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:15,861 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572818300] [2020-09-24 23:47:15,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:15,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:15,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:15,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:16,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:16,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:20,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:20,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 23:47:20,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:47:20,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:47:20,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:20,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:47:20,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:20,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:20,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:20,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:20,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:20,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:20,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:20,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 23:47:20,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:20,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:20,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:20,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:20,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:20,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:20,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:20,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:20,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:21,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:21,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:21,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:24,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 23:47:24,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 23:47:24,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3177 [2020-09-24 23:47:24,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:24,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:47:24,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:24,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:24,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:24,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:24,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 23:47:24,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:24,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-09-24 23:47:24,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:47:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:24,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:47:24,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:24,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:24,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:24,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:24,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:24,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:47:24,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:24,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:24,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:24,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 23:47:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:24,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:24,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:24,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:24,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:47:24,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:24,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:24,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:24,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:24,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 23:47:24,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:24,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,408 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:24,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:24,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:24,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 23:47:24,409 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:24,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:24,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:24,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:24,418 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 9 proven. 29 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 23:47:24,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572818300] [2020-09-24 23:47:24,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:24,419 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 23:47:24,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442044051] [2020-09-24 23:47:24,420 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 23:47:24,420 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:24,421 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 23:47:24,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 23:47:24,421 INFO L87 Difference]: Start difference. First operand 50 states and 69 transitions. Second operand 9 states. [2020-09-24 23:47:24,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:24,553 INFO L93 Difference]: Finished difference Result 128 states and 198 transitions. [2020-09-24 23:47:24,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:47:24,554 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 23:47:24,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:24,558 INFO L225 Difference]: With dead ends: 128 [2020-09-24 23:47:24,558 INFO L226 Difference]: Without dead ends: 84 [2020-09-24 23:47:24,560 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 23:47:24,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-24 23:47:24,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 76. [2020-09-24 23:47:24,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 23:47:24,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 105 transitions. [2020-09-24 23:47:24,576 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 105 transitions. Word has length 51 [2020-09-24 23:47:24,577 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:24,577 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 105 transitions. [2020-09-24 23:47:24,577 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 23:47:24,577 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 105 transitions. [2020-09-24 23:47:24,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 23:47:24,581 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:24,581 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:24,582 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 23:47:24,582 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:24,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:24,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1161869885, now seen corresponding path program 2 times [2020-09-24 23:47:24,583 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:24,583 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1641640581] [2020-09-24 23:47:24,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:24,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:24,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:24,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:25,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:25,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:25,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:25,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:25,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:26,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:27,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:29,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 23:47:29,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 23:47:29,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 23:47:29,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:29,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:47:29,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:29,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:29,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:29,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:29,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:29,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:47:29,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:29,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:29,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:29,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:29,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:29,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:29,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:29,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:29,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:30,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:30,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:30,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:30,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:30,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:30,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:30,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:34,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 23:47:34,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 23:47:34,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 23:47:34,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 23:47:34,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:47:34,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 23:47:34,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:34,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:34,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:34,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:35,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:47:35,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 23:47:35,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 553 [2020-09-24 23:47:35,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:35,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:35,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:47:35,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:35,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:35,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:35,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:35,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:35,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:35,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 23:47:35,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:35,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:35,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:35,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:35,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:35,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:35,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:35,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:35,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:35,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:35,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:35,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:47:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:35,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:35,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:37,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:37,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:47:37,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 23:47:37,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1709 [2020-09-24 23:47:37,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:37,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 23:47:37,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:47:37,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:37,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:37,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:37,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:37,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:37,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:47:37,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:37,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:37,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:37,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:37,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:37,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:37,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:37,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:37,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:37,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:47:37,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:37,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 23:47:37,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:47:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:37,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:47:37,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:37,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:37,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:37,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:37,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:37,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:37,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:37,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:47:37,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 23:47:37,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:37,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:37,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:37,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:37,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:37,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:37,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:37,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:37,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:37,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 23:47:37,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:37,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:37,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:37,644 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 78 proven. 78 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-24 23:47:37,644 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1641640581] [2020-09-24 23:47:37,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:37,645 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 23:47:37,645 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823358963] [2020-09-24 23:47:37,645 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 23:47:37,646 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:37,646 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 23:47:37,646 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-24 23:47:37,646 INFO L87 Difference]: Start difference. First operand 76 states and 105 transitions. Second operand 16 states. [2020-09-24 23:47:37,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:37,997 INFO L93 Difference]: Finished difference Result 148 states and 250 transitions. [2020-09-24 23:47:37,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 23:47:37,998 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 87 [2020-09-24 23:47:37,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:38,000 INFO L225 Difference]: With dead ends: 148 [2020-09-24 23:47:38,000 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 23:47:38,001 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2020-09-24 23:47:38,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 23:47:38,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-24 23:47:38,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-24 23:47:38,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 95 transitions. [2020-09-24 23:47:38,012 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 95 transitions. Word has length 87 [2020-09-24 23:47:38,013 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:38,013 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 95 transitions. [2020-09-24 23:47:38,013 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 23:47:38,013 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 95 transitions. [2020-09-24 23:47:38,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 23:47:38,016 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:38,017 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:38,017 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 23:47:38,017 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:38,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:38,017 INFO L82 PathProgramCache]: Analyzing trace with hash 1836419539, now seen corresponding path program 3 times [2020-09-24 23:47:38,018 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:38,018 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1474010684] [2020-09-24 23:47:38,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:38,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:38,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:38,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:38,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:38,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:38,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:38,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:39,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:42,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:43,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 23:47:43,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 23:47:43,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 23:47:43,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:43,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:43,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:43,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 23:47:43,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:43,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:43,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:43,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:43,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:43,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:43,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:47:43,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:43,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:43,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:43,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:43,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:43,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:43,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:43,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:45,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:48,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 23:47:48,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 23:47:48,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:47:48,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 23:47:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 23:47:48,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 23:47:48,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:48,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:48,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:48,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:48,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 23:47:50,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 23:47:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2462 [2020-09-24 23:47:50,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:50,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 23:47:50,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:50,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:50,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:50,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 23:47:50,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:50,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 23:47:50,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:50,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:50,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:47:50,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:50,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-24 23:47:50,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:47:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:50,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 23:47:50,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:50,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:50,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:47:50,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 23:47:50,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:50,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:50,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:50,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:50,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:50,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:50,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:50,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 23:47:50,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:50,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:50,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:51,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 23:47:51,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 23:47:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 270 [2020-09-24 23:47:51,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 23:47:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 23:47:51,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 23:47:51,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:51,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 23:47:51,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:51,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 23:47:51,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:51,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 23:47:51,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:51,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:47:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:51,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 23:47:51,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:51,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 23:47:51,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:51,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:51,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 23:47:51,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:51,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 23:47:51,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:47:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:51,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 23:47:51,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:51,384 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 96 proven. 62 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-24 23:47:51,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1474010684] [2020-09-24 23:47:51,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:47:51,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-24 23:47:51,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492655058] [2020-09-24 23:47:51,388 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-24 23:47:51,388 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:47:51,388 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-24 23:47:51,389 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2020-09-24 23:47:51,389 INFO L87 Difference]: Start difference. First operand 76 states and 95 transitions. Second operand 14 states. [2020-09-24 23:47:51,695 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:47:51,695 INFO L93 Difference]: Finished difference Result 133 states and 179 transitions. [2020-09-24 23:47:51,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 23:47:51,696 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 87 [2020-09-24 23:47:51,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:47:51,698 INFO L225 Difference]: With dead ends: 133 [2020-09-24 23:47:51,698 INFO L226 Difference]: Without dead ends: 63 [2020-09-24 23:47:51,699 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 24 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=115, Invalid=305, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:47:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-24 23:47:51,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-09-24 23:47:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-24 23:47:51,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 66 transitions. [2020-09-24 23:47:51,707 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 66 transitions. Word has length 87 [2020-09-24 23:47:51,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:47:51,707 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 66 transitions. [2020-09-24 23:47:51,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-24 23:47:51,707 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 66 transitions. [2020-09-24 23:47:51,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 23:47:51,709 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:47:51,709 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:47:51,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 23:47:51,709 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:47:51,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:47:51,710 INFO L82 PathProgramCache]: Analyzing trace with hash 1885389560, now seen corresponding path program 4 times [2020-09-24 23:47:51,710 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:47:51,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [533591918] [2020-09-24 23:47:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:47:51,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:51,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:51,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:54,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:54,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:54,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-24 23:47:56,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 23:47:56,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 23:47:56,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:47:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 23:47:56,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 23:47:56,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:47:56,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:47:56,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 23:47:56,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:47:56,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 23:47:56,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:47:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:47:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:47:56,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:47:56,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:47:56,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 23:47:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:47:56,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:56,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:57,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:57,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:57,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:57,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:58,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:59,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:47:59,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:48:01,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking...