/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=DEEPEST --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 [2020-09-25 00:54:04,480 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:54:04,485 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:54:04,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:54:04,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:54:04,536 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:54:04,538 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:54:04,541 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:54:04,543 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:54:04,546 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:54:04,547 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:54:04,548 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:54:04,548 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:54:04,551 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:54:04,554 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:54:04,555 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:54:04,557 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:54:04,558 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:54:04,559 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:54:04,567 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:54:04,569 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:54:04,570 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:54:04,571 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:54:04,572 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:54:04,584 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:54:04,584 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:54:04,585 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:54:04,586 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:54:04,593 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:54:04,594 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:54:04,594 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:54:04,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:54:04,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:54:04,599 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:54:04,600 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:54:04,600 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:54:04,601 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:54:04,601 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:54:04,601 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:54:04,602 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:54:04,603 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:54:04,604 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:54:04,648 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:54:04,649 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:54:04,650 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:54:04,651 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:54:04,651 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:54:04,651 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:54:04,651 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:54:04,652 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:54:04,652 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:54:04,652 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:54:04,653 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:54:04,653 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:54:04,653 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:54:04,654 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:54:04,654 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:54:04,654 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:54:04,654 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:54:04,655 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:54:04,655 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:54:04,655 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:54:04,655 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:54:04,655 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:54:04,656 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:54:04,656 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:54:04,656 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:54:04,656 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:54:04,656 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:54:04,657 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:54:04,657 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:54:04,657 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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;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=DEEPEST;log-additional-information=true; [2020-09-25 00:54:05,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:54:05,133 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:54:05,138 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:54:05,140 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:54:05,141 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:54:05,142 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 00:54:05,231 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a74e6634e/608b1290ff0a4471be0068f2669035ff/FLAGcfa04e01b [2020-09-25 00:54:05,748 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:54:05,749 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-25 00:54:05,756 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a74e6634e/608b1290ff0a4471be0068f2669035ff/FLAGcfa04e01b [2020-09-25 00:54:06,096 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a74e6634e/608b1290ff0a4471be0068f2669035ff [2020-09-25 00:54:06,108 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:54:06,112 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:54:06,113 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:06,113 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:54:06,118 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:54:06,119 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:06" (1/1) ... [2020-09-25 00:54:06,124 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06, skipping insertion in model container [2020-09-25 00:54:06,124 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:54:06" (1/1) ... [2020-09-25 00:54:06,134 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:54:06,160 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:54:06,376 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:06,382 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:54:06,402 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:54:06,420 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:54:06,420 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06 WrapperNode [2020-09-25 00:54:06,420 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:54:06,421 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:54:06,421 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:54:06,422 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:54:06,439 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06" (1/1) ... [2020-09-25 00:54:06,440 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06" (1/1) ... [2020-09-25 00:54:06,446 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06" (1/1) ... [2020-09-25 00:54:06,446 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06" (1/1) ... [2020-09-25 00:54:06,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06" (1/1) ... [2020-09-25 00:54:06,453 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06" (1/1) ... [2020-09-25 00:54:06,454 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06" (1/1) ... [2020-09-25 00:54:06,456 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:54:06,456 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:54:06,456 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:54:06,456 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:54:06,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:54:06,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:54:06,655 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:54:06,656 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 00:54:06,657 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:54:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:54:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:54:06,657 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 00:54:06,658 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:54:06,659 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:54:06,660 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:54:06,871 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:54:06,871 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 00:54:06,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:06 BoogieIcfgContainer [2020-09-25 00:54:06,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:54:06,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:54:06,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:54:06,882 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:54:06,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:54:06" (1/3) ... [2020-09-25 00:54:06,883 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:06, skipping insertion in model container [2020-09-25 00:54:06,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:54:06" (2/3) ... [2020-09-25 00:54:06,884 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:54:06, skipping insertion in model container [2020-09-25 00:54:06,884 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:54:06" (3/3) ... [2020-09-25 00:54:06,887 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-25 00:54:06,899 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:54:06,909 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:54:06,953 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:54:07,022 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:54:07,022 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:54:07,022 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:54:07,022 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:54:07,023 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:54:07,023 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:54:07,023 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:54:07,023 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:54:07,042 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 00:54:07,050 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 00:54:07,050 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:07,051 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:07,052 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:07,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:07,059 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 00:54:07,068 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:07,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-25 00:54:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:07,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:07,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:07,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:07,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 00:54:07,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:07,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 00:54:07,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:07,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:07,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:54:07,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:54:07,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:54:07,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:07,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:07,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:07,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:07,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:07,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:07,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:07,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:07,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:07,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:07,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:07,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:07,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:07,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:07,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:07,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:07,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:07,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:54:07,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:07,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:07,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:07,388 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:54:07,389 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-25 00:54:07,391 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:54:07,392 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:54:07,393 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271617329] [2020-09-25 00:54:07,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:54:07,399 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:07,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:54:07,413 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:54:07,415 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 00:54:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:07,540 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 00:54:07,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:54:07,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 00:54:07,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:07,555 INFO L225 Difference]: With dead ends: 44 [2020-09-25 00:54:07,555 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 00:54:07,559 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:07,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 00:54:07,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 00:54:07,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:54:07,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:54:07,617 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 00:54:07,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:07,618 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:54:07,618 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:54:07,619 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:54:07,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 00:54:07,621 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:07,621 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:07,622 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:54:07,622 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:07,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:07,622 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 00:54:07,623 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:07,623 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140226502] [2020-09-25 00:54:07,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:07,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:07,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 00:54:07,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:07,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 00:54:07,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:07,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:54:07,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:07,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:07,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:07,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:07,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:07,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:07,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:07,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:07,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:07,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:07,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:07,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:07,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:07,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:07,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:07,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:07,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:07,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:07,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 00:54:07,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:07,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:07,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:07,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:07,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:54:07,854 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140226502] [2020-09-25 00:54:07,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:54:07,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:54:07,855 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489057866] [2020-09-25 00:54:07,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:54:07,857 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:07,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:54:07,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:54:07,858 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 00:54:07,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:07,925 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 00:54:07,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 00:54:07,926 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 00:54:07,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:07,928 INFO L225 Difference]: With dead ends: 36 [2020-09-25 00:54:07,928 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:54:07,929 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:07,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:54:07,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 00:54:07,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 00:54:07,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 00:54:07,937 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 00:54:07,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:07,938 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 00:54:07,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:54:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 00:54:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:54:07,940 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:07,940 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:07,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:54:07,941 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:07,941 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 00:54:07,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:07,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105747770] [2020-09-25 00:54:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:08,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 00:54:08,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 622 [2020-09-25 00:54:08,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 00:54:08,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:08,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 00:54:08,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:08,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:08,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:08,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:08,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:08,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:08,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:08,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:08,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:08,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:08,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:08,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:08,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 00:54:08,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:08,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 00:54:08,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:08,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 00:54:08,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:08,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:08,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:08,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:08,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:08,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:08,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:08,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:54:08,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:08,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:08,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:08,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 00:54:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:08,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:08,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:08,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:08,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:08,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:08,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 00:54:08,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:08,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:08,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:54:08,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105747770] [2020-09-25 00:54:08,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:08,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 00:54:08,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161316821] [2020-09-25 00:54:08,784 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:54:08,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:08,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:54:08,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:08,790 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-25 00:54:08,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:08,889 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-25 00:54:08,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:08,890 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-25 00:54:08,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:08,892 INFO L225 Difference]: With dead ends: 52 [2020-09-25 00:54:08,892 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 00:54:08,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:54:08,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 00:54:08,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 00:54:08,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 00:54:08,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 00:54:08,901 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-25 00:54:08,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:08,902 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 00:54:08,902 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:54:08,902 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 00:54:08,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 00:54:08,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:08,904 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:08,905 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 00:54:08,905 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:08,905 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:08,905 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-25 00:54:08,906 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:08,906 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089872852] [2020-09-25 00:54:08,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:08,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:09,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 00:54:09,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:09,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-25 00:54:09,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:09,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:54:09,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 00:54:09,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:09,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:09,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:09,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:09,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:09,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:09,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:09,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:09,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:09,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:09,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:09,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:09,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:09,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:09,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:09,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:09,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-09-25 00:54:09,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:09,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:09,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:54:09,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:09,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:09,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:09,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:09,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:09,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:09,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 00:54:09,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:09,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:09,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:09,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:09,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:09,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:09,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:09,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:09,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:09,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:54:09,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:09,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:09,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:09,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:09,717 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 00:54:09,717 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089872852] [2020-09-25 00:54:09,718 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:09,718 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:54:09,718 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824946301] [2020-09-25 00:54:09,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:54:09,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:09,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:54:09,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:54:09,720 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 00:54:09,797 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:09,797 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-25 00:54:09,798 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:09,798 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 00:54:09,798 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:09,800 INFO L225 Difference]: With dead ends: 42 [2020-09-25 00:54:09,800 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 00:54:09,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:54:09,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 00:54:09,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-25 00:54:09,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-25 00:54:09,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-25 00:54:09,821 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-25 00:54:09,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:09,821 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-25 00:54:09,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:54:09,822 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-25 00:54:09,823 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 00:54:09,823 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:09,823 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:09,824 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 00:54:09,824 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:09,824 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:09,824 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 00:54:09,824 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:09,825 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635439392] [2020-09-25 00:54:09,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:09,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:09,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:09,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:10,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 00:54:10,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 00:54:10,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 474 [2020-09-25 00:54:10,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:10,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:10,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:54:10,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:54:10,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:10,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:10,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:10,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:10,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:10,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:10,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:10,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:10,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:10,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:10,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:10,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 00:54:10,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:10,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 00:54:10,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:10,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:54:10,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 00:54:10,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:10,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:10,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:10,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:10,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:10,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:10,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 00:54:10,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:10,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:10,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:10,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:10,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:10,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:10,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:10,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:10,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:10,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 00:54:10,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:10,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:10,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:10,600 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 00:54:10,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635439392] [2020-09-25 00:54:10,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:10,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 00:54:10,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094786935] [2020-09-25 00:54:10,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 00:54:10,603 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:10,603 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 00:54:10,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 00:54:10,603 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 6 states. [2020-09-25 00:54:10,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:10,727 INFO L93 Difference]: Finished difference Result 72 states and 93 transitions. [2020-09-25 00:54:10,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 00:54:10,728 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-25 00:54:10,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:10,731 INFO L225 Difference]: With dead ends: 72 [2020-09-25 00:54:10,731 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 00:54:10,732 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:54:10,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 00:54:10,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 00:54:10,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 00:54:10,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 00:54:10,749 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 35 [2020-09-25 00:54:10,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:10,750 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 00:54:10,750 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 00:54:10,750 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 00:54:10,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 00:54:10,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:10,755 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:10,755 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 00:54:10,756 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:10,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:10,756 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-25 00:54:10,756 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:10,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [835400812] [2020-09-25 00:54:10,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:10,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:10,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:12,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:12,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 00:54:12,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:12,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1992 [2020-09-25 00:54:12,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:54:12,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 00:54:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:12,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:12,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:12,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:12,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:12,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:12,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:12,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:12,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:12,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:12,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:12,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:12,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:14,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:14,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:54:14,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:14,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1801 [2020-09-25 00:54:14,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:14,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:54:14,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:14,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:14,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:14,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:14,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:14,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:14,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:14,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 00:54:14,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:14,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:54:14,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:14,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:14,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:14,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:14,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:14,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:14,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:54:14,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:14,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:14,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:14,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:14,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:14,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:14,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:14,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:14,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:14,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:14,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:14,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:14,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:14,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:14,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:14,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:14,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:14,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:14,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 00:54:14,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:14,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:14,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:14,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:14,759 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 00:54:14,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [835400812] [2020-09-25 00:54:14,760 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:14,761 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 00:54:14,761 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1499078658] [2020-09-25 00:54:14,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 00:54:14,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:14,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 00:54:14,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:54:14,763 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 7 states. [2020-09-25 00:54:14,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:14,892 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 00:54:14,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:54:14,892 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-25 00:54:14,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:14,894 INFO L225 Difference]: With dead ends: 50 [2020-09-25 00:54:14,894 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 00:54:14,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:54:14,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 00:54:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 38. [2020-09-25 00:54:14,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 00:54:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-25 00:54:14,909 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 52 [2020-09-25 00:54:14,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:14,910 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-25 00:54:14,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 00:54:14,910 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-25 00:54:14,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:54:14,913 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:14,913 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:14,914 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 00:54:14,914 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:14,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:14,914 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 3 times [2020-09-25 00:54:14,915 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:14,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787376836] [2020-09-25 00:54:14,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:14,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:14,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:14,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:15,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:15,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:15,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:15,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:15,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:18,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:19,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:19,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 00:54:19,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 00:54:19,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-25 00:54:19,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:19,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:54:19,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:54:19,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 00:54:19,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:19,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:19,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:19,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:19,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:19,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:19,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:19,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:19,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:19,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:19,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:19,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:19,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:19,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:20,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:20,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:20,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:20,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:20,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:20,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:20,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:21,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:21,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:24,996 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:24,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 00:54:24,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 00:54:24,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:54:24,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:54:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:54:24,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 00:54:24,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:25,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:25,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:25,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:25,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:25,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:25,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-09-25 00:54:25,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:25,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:54:25,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:54:25,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:25,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:25,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:25,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:25,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:25,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 00:54:25,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:25,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:25,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:25,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:25,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:25,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:25,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:25,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:25,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:54:25,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:25,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:25,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:25,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:25,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:25,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:27,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:27,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:54:27,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 00:54:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2453 [2020-09-25 00:54:27,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:27,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 00:54:27,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:27,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:27,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:27,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:27,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:27,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:27,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:27,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:27,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 00:54:27,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:54:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:27,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:54:27,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:27,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:27,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:27,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:27,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:27,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:27,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:27,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 00:54:27,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:27,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:27,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:27,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:27,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:27,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:27,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:27,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:27,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:27,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:27,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:54:27,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:27,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:27,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:27,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:27,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:27,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:27,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:27,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:27,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:54:27,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:27,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:27,981 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 78 proven. 70 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-25 00:54:27,982 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787376836] [2020-09-25 00:54:27,982 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:27,982 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 00:54:27,983 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1297742353] [2020-09-25 00:54:27,985 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 00:54:27,985 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:27,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 00:54:27,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-25 00:54:27,986 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 10 states. [2020-09-25 00:54:28,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:28,208 INFO L93 Difference]: Finished difference Result 84 states and 113 transitions. [2020-09-25 00:54:28,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 00:54:28,209 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-25 00:54:28,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:28,210 INFO L225 Difference]: With dead ends: 84 [2020-09-25 00:54:28,213 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 00:54:28,216 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 00:54:28,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 00:54:28,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-25 00:54:28,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 00:54:28,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 00:54:28,231 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 87 [2020-09-25 00:54:28,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:28,231 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 00:54:28,231 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 00:54:28,231 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 00:54:28,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-25 00:54:28,235 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:28,235 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:28,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 00:54:28,235 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:28,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:28,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 4 times [2020-09-25 00:54:28,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:28,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1813433700] [2020-09-25 00:54:28,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:28,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:29,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:30,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:30,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:33,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-25 00:54:33,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 00:54:33,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:54:33,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 00:54:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 00:54:33,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 00:54:33,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:33,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:33,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:33,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:33,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:33,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:33,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:33,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:33,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:33,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:33,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:33,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:33,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:35,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:35,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:35,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:35,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:35,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:35,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:38,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 00:54:38,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 00:54:38,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 00:54:38,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:38,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 00:54:38,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:54:38,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 00:54:38,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:38,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:38,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:38,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:38,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:39,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:54:39,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1183 [2020-09-25 00:54:39,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:39,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:54:39,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:39,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:39,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:39,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:39,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:39,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 00:54:39,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:39,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:54:39,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:54:39,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:39,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:39,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:39,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:39,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:39,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:39,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 00:54:39,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:39,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:39,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:39,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:39,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:39,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:39,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:39,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:39,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:39,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:54:39,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:39,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:39,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 00:54:39,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:39,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:39,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:39,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:39,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:54:39,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:39,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:39,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:39,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 00:54:39,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:39,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:39,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:40,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:40,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:41,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:41,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:41,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:42,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:42,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:42,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:44,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:44,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 00:54:44,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-25 00:54:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:54:44,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 00:54:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 00:54:44,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 00:54:44,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:44,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:44,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:44,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:44,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:45,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:45,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:54:45,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:54:45,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1076 [2020-09-25 00:54:45,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:45,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 00:54:45,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:45,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:54:45,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:46,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:46,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:46,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:46,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:46,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:46,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:46,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:54:46,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:46,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:46,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:54:46,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:46,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:46,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:46,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:46,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:46,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:46,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:46,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:46,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:46,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:46,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:46,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:46,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:46,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:46,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:46,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:46,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:46,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:46,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:46,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:46,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:46,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:46,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:46,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:46,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:46,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:46,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:46,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:46,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 00:54:46,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:46,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:46,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 00:54:46,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:46,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 00:54:46,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:46,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:46,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:46,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:46,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:46,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:54:46,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 00:54:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:46,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:46,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:46,183 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 194 proven. 138 refuted. 0 times theorem prover too weak. 151 trivial. 0 not checked. [2020-09-25 00:54:46,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1813433700] [2020-09-25 00:54:46,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:46,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 00:54:46,184 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692387123] [2020-09-25 00:54:46,185 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 00:54:46,185 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:46,185 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 00:54:46,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 00:54:46,186 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 12 states. [2020-09-25 00:54:46,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:46,551 INFO L93 Difference]: Finished difference Result 124 states and 171 transitions. [2020-09-25 00:54:46,552 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 00:54:46,552 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2020-09-25 00:54:46,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:46,556 INFO L225 Difference]: With dead ends: 124 [2020-09-25 00:54:46,556 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 00:54:46,557 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=137, Invalid=369, Unknown=0, NotChecked=0, Total=506 [2020-09-25 00:54:46,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 00:54:46,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 65. [2020-09-25 00:54:46,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-25 00:54:46,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 77 transitions. [2020-09-25 00:54:46,572 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 77 transitions. Word has length 123 [2020-09-25 00:54:46,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:46,573 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 77 transitions. [2020-09-25 00:54:46,573 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 00:54:46,573 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 77 transitions. [2020-09-25 00:54:46,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 00:54:46,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:46,574 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:46,574 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 00:54:46,575 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:46,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:46,575 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 5 times [2020-09-25 00:54:46,575 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:46,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2043977888] [2020-09-25 00:54:46,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:46,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:46,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:46,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:46,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:46,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:51,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 00:54:51,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:54:51,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 00:54:51,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:51,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 00:54:51,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-25 00:54:51,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:51,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:54:51,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:51,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:51,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 00:54:51,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:51,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 00:54:51,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:51,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:51,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:51,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:51,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:51,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 00:54:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:51,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:51,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:53,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:56,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 00:54:56,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 00:54:56,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 00:54:56,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 00:54:56,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 00:54:56,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-25 00:54:56,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:56,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:56,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:56,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 00:54:58,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:54:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1589 [2020-09-25 00:54:58,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 00:54:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 00:54:58,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:58,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:58,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 00:54:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-25 00:54:58,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 00:54:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 00:54:58,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:58,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:58,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:58,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:58,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 00:54:58,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:58,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:58,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:58,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:58,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:58,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 00:54:58,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 00:54:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:58,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:58,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 00:54:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:58,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:58,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 00:54:58,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 00:54:58,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:58,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 00:54:58,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 00:54:58,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:58,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 00:54:58,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:54:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 00:54:58,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:58,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 00:54:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:54:58,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:58,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 00:54:58,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:58,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:58,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 00:54:58,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:54:58,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 00:54:58,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:54:58,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 00:54:58,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 00:54:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:54:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:54:58,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:54:58,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:54:58,587 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 26 proven. 106 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 00:54:58,587 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2043977888] [2020-09-25 00:54:58,587 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 00:54:58,587 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 00:54:58,588 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495825652] [2020-09-25 00:54:58,588 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 00:54:58,588 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:54:58,588 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 00:54:58,589 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-25 00:54:58,589 INFO L87 Difference]: Start difference. First operand 65 states and 77 transitions. Second operand 9 states. [2020-09-25 00:54:58,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:54:58,751 INFO L93 Difference]: Finished difference Result 81 states and 95 transitions. [2020-09-25 00:54:58,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 00:54:58,752 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-25 00:54:58,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:54:58,753 INFO L225 Difference]: With dead ends: 81 [2020-09-25 00:54:58,753 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 00:54:58,754 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-25 00:54:58,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 00:54:58,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 71. [2020-09-25 00:54:58,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 00:54:58,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 84 transitions. [2020-09-25 00:54:58,765 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 84 transitions. Word has length 87 [2020-09-25 00:54:58,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:54:58,766 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 84 transitions. [2020-09-25 00:54:58,766 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 00:54:58,766 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 84 transitions. [2020-09-25 00:54:58,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 00:54:58,768 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:54:58,768 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 6, 6, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:54:58,768 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 00:54:58,769 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:54:58,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:54:58,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1001388386, now seen corresponding path program 6 times [2020-09-25 00:54:58,769 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:54:58,769 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [506573010] [2020-09-25 00:54:58,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:54:58,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:54:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:58,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:54:59,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:00,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:55:01,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking...