/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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:23:52,124 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:23:52,129 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:23:52,176 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:23:52,177 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:23:52,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:23:52,191 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:23:52,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:23:52,199 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:23:52,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:23:52,206 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:23:52,207 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:23:52,207 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:23:52,209 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:23:52,210 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:23:52,213 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:23:52,216 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:23:52,217 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:23:52,219 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:23:52,227 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:23:52,230 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:23:52,232 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:23:52,233 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:23:52,234 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:23:52,239 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:23:52,240 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:23:52,240 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:23:52,243 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:23:52,244 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:23:52,246 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:23:52,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:23:52,247 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:23:52,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:23:52,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:23:52,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:23:52,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:23:52,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:23:52,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:23:52,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:23:52,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:23:52,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:23:52,256 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:23:52,308 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:23:52,309 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:23:52,311 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:23:52,311 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:23:52,312 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:23:52,312 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:23:52,312 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:23:52,313 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:23:52,313 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:23:52,313 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:23:52,314 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:23:52,315 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:23:52,315 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:23:52,315 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:23:52,316 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:23:52,316 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:23:52,316 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:23:52,316 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:23:52,316 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:23:52,317 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:23:52,317 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:23:52,317 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:52,317 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:23:52,318 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:23:52,318 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:23:52,318 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:23:52,318 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:23:52,318 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:23:52,319 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:23:52,319 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:23:52,762 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:23:52,782 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:23:52,786 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:23:52,788 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:23:52,789 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:23:52,790 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2020-09-24 20:23:52,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/315d17f33/e0600a37184a4f15bda19a5fe1e22117/FLAG0333fb9ad [2020-09-24 20:23:53,447 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:23:53,449 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-1.c [2020-09-24 20:23:53,458 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/315d17f33/e0600a37184a4f15bda19a5fe1e22117/FLAG0333fb9ad [2020-09-24 20:23:53,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/315d17f33/e0600a37184a4f15bda19a5fe1e22117 [2020-09-24 20:23:53,802 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:23:53,809 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:23:53,811 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:53,811 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:23:53,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:23:53,819 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:53" (1/1) ... [2020-09-24 20:23:53,824 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f0616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:53, skipping insertion in model container [2020-09-24 20:23:53,825 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:53" (1/1) ... [2020-09-24 20:23:53,835 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:23:53,860 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:54,066 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:54,072 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:54,093 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:54,112 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:54,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54 WrapperNode [2020-09-24 20:23:54,113 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:54,113 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:54,114 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:54,114 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:54,133 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54" (1/1) ... [2020-09-24 20:23:54,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54" (1/1) ... [2020-09-24 20:23:54,140 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54" (1/1) ... [2020-09-24 20:23:54,140 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54" (1/1) ... [2020-09-24 20:23:54,145 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54" (1/1) ... [2020-09-24 20:23:54,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54" (1/1) ... [2020-09-24 20:23:54,149 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54" (1/1) ... [2020-09-24 20:23:54,150 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:54,151 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:54,151 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:54,151 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:54,152 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:54,309 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 20:23:54,310 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 20:23:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:54,310 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:54,553 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:54,554 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:54,559 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:54 BoogieIcfgContainer [2020-09-24 20:23:54,560 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:54,561 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:54,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:54,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:54,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:23:53" (1/3) ... [2020-09-24 20:23:54,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4fa513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:54, skipping insertion in model container [2020-09-24 20:23:54,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:54" (2/3) ... [2020-09-24 20:23:54,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e4fa513 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:54, skipping insertion in model container [2020-09-24 20:23:54,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:54" (3/3) ... [2020-09-24 20:23:54,576 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-1.c [2020-09-24 20:23:54,614 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:54,641 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:54,688 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:54,722 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:54,723 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:54,723 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:54,723 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:54,723 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:54,723 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:54,723 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:54,724 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:54,745 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 20:23:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:23:54,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:54,754 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:54,754 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:54,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:54,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 20:23:54,771 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:54,771 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610968148] [2020-09-24 20:23:54,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:54,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:54,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:55,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:23:55,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:55,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 20:23:55,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:55,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:55,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:23:55,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:55,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-24 20:23:55,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:55,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:55,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:55,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:55,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:55,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:55,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:55,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:55,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:55,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:55,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:55,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:55,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:55,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:55,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:55,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:23:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:55,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:23:55,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:55,246 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:55,247 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610968148] [2020-09-24 20:23:55,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:55,250 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:55,251 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650045943] [2020-09-24 20:23:55,263 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:55,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:55,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:55,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:55,287 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 20:23:55,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:55,388 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 20:23:55,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:23:55,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:23:55,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:55,405 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:23:55,405 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:23:55,410 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:55,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:23:55,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:23:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:55,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:55,473 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 20:23:55,473 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:55,474 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:55,474 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:55,474 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:55,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:23:55,477 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:55,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:55,477 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:23:55,478 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:55,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:55,478 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 20:23:55,478 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:55,479 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2117502016] [2020-09-24 20:23:55,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:55,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:55,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:55,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:55,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:55,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-24 20:23:55,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:23:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:55,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:23:55,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:55,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:55,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:55,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:55,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:55,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:55,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:55,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:55,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:55,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:55,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:55,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:55,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:55,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 20:23:55,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:23:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:55,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:55,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:55,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:23:55,842 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2117502016] [2020-09-24 20:23:55,843 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:55,843 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:55,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [602074978] [2020-09-24 20:23:55,845 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:55,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:55,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:55,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:55,847 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 20:23:55,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:55,891 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 20:23:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:23:55,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 20:23:55,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:55,894 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:23:55,894 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:23:55,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:55,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:23:55,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 20:23:55,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:55,904 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 20:23:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:55,904 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:55,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:55,905 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:55,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:23:55,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:55,907 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:55,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:55,907 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:55,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:55,908 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 20:23:55,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:55,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1961406309] [2020-09-24 20:23:55,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:55,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:55,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:55,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:23:57,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:57,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1900 [2020-09-24 20:23:57,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:57,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:23:57,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:23:57,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:57,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:57,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:57,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:57,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:57,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:57,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:57,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:57,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:57,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:57,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:57,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:58,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:58,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-24 20:23:58,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:58,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:58,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:23:58,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:58,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:58,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:58,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:58,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:23:58,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:23:58,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:58,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:23:58,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:58,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:58,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:58,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:58,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:23:58,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:58,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:58,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:58,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:58,304 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 20:23:58,305 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1961406309] [2020-09-24 20:23:58,306 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:58,308 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:23:58,309 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773826972] [2020-09-24 20:23:58,310 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:58,310 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:58,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:58,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:58,312 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 20:23:58,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:58,480 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-09-24 20:23:58,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:23:58,483 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 20:23:58,484 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:58,488 INFO L225 Difference]: With dead ends: 48 [2020-09-24 20:23:58,488 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:23:58,491 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:58,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:23:58,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-09-24 20:23:58,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 20:23:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 20:23:58,515 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 20:23:58,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:58,516 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 20:23:58,516 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:58,516 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 20:23:58,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:23:58,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:58,522 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] [2020-09-24 20:23:58,522 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:58,522 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:58,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:58,525 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-24 20:23:58,525 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:58,525 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953049420] [2020-09-24 20:23:58,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:01,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:24:01,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:24:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3379 [2020-09-24 20:24:01,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:24:01,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:24:01,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:01,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:01,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:01,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:01,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:01,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:01,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:24:01,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:01,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:01,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:01,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:01,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:01,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:01,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:02,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:24:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1011 [2020-09-24 20:24:02,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:02,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:24:02,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:03,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:03,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:03,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:03,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:03,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 20:24:03,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:03,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:03,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:03,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:03,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:03,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:03,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:03,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:24:03,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:03,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:03,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:03,145 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 20:24:03,146 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953049420] [2020-09-24 20:24:03,146 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:03,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:24:03,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92236835] [2020-09-24 20:24:03,148 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:24:03,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:03,149 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:24:03,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:24:03,150 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2020-09-24 20:24:03,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:03,276 INFO L93 Difference]: Finished difference Result 60 states and 77 transitions. [2020-09-24 20:24:03,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:24:03,278 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 20:24:03,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:03,282 INFO L225 Difference]: With dead ends: 60 [2020-09-24 20:24:03,285 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 20:24:03,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:03,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 20:24:03,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 44. [2020-09-24 20:24:03,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 20:24:03,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-24 20:24:03,310 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-24 20:24:03,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:03,311 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-24 20:24:03,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:24:03,311 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-24 20:24:03,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:24:03,315 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:03,315 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] [2020-09-24 20:24:03,315 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:24:03,319 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:03,319 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:03,319 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-24 20:24:03,319 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:03,320 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [593174176] [2020-09-24 20:24:03,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:03,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:24:04,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:04,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 928 [2020-09-24 20:24:04,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:04,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:24:04,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:04,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:04,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:04,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:04,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:04,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:04,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:04,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:04,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:04,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 20:24:04,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:04,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:24:04,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:04,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:04,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:04,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:24:04,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:04,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:04,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:04,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:04,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:24:04,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:04,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,454 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 20:24:04,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [593174176] [2020-09-24 20:24:04,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:04,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:24:04,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397993870] [2020-09-24 20:24:04,457 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:24:04,457 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:04,457 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:24:04,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:24:04,458 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 8 states. [2020-09-24 20:24:04,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:04,603 INFO L93 Difference]: Finished difference Result 76 states and 113 transitions. [2020-09-24 20:24:04,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:24:04,604 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 20:24:04,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:04,606 INFO L225 Difference]: With dead ends: 76 [2020-09-24 20:24:04,606 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 20:24:04,607 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:04,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 20:24:04,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-09-24 20:24:04,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:24:04,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-24 20:24:04,623 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 34 [2020-09-24 20:24:04,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:04,623 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-24 20:24:04,624 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:24:04,624 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-24 20:24:04,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:24:04,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:04,629 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:04,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:24:04,630 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:04,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:04,630 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 20:24:04,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:04,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950688435] [2020-09-24 20:24:04,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:04,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:06,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:24:06,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:06,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1614 [2020-09-24 20:24:06,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:06,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:24:06,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:06,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:06,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:06,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:06,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:06,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:06,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:24:06,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:06,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:06,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:06,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:06,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:06,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:06,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:06,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:24:06,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:06,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-09-24 20:24:06,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:06,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:06,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:06,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:06,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:06,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:06,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:06,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:06,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:06,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:24:06,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:06,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:06,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:06,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:06,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:06,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:06,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:06,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:06,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:24:06,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:06,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:06,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:06,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:06,966 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:24:06,966 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950688435] [2020-09-24 20:24:06,967 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:06,967 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:24:06,967 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352120400] [2020-09-24 20:24:06,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:24:06,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:06,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:24:06,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:24:06,968 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 8 states. [2020-09-24 20:24:07,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:07,106 INFO L93 Difference]: Finished difference Result 94 states and 146 transitions. [2020-09-24 20:24:07,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:24:07,107 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-24 20:24:07,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:07,109 INFO L225 Difference]: With dead ends: 94 [2020-09-24 20:24:07,109 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 20:24:07,110 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:07,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 20:24:07,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2020-09-24 20:24:07,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:24:07,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 99 transitions. [2020-09-24 20:24:07,125 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 99 transitions. Word has length 35 [2020-09-24 20:24:07,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:07,126 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 99 transitions. [2020-09-24 20:24:07,126 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:24:07,126 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2020-09-24 20:24:07,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:24:07,130 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:07,130 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:07,130 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:24:07,130 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:07,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:07,131 INFO L82 PathProgramCache]: Analyzing trace with hash 1485744477, now seen corresponding path program 3 times [2020-09-24 20:24:07,131 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:07,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276186104] [2020-09-24 20:24:07,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:07,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:12,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:24:12,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:24:12,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:12,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:24:12,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:24:12,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:12,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:12,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:12,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:12,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:12,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:12,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:12,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:12,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:12,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:14,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:24:14,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2085 [2020-09-24 20:24:14,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:24:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:14,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:14,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:14,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:14,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:14,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:14,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:24:14,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:14,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:14,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:14,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:14,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:14,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:14,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:14,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:14,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:24:14,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:14,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:14,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:14,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:14,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:14,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:14,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:14,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:14,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:24:14,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:14,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:14,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:14,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:14,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:14,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:14,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:14,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:14,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:14,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:24:14,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:14,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:14,584 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 24 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 20:24:14,584 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276186104] [2020-09-24 20:24:14,584 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:14,585 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 20:24:14,586 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294767203] [2020-09-24 20:24:14,586 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 20:24:14,586 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:14,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 20:24:14,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:24:14,587 INFO L87 Difference]: Start difference. First operand 62 states and 99 transitions. Second operand 13 states. [2020-09-24 20:24:14,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:14,839 INFO L93 Difference]: Finished difference Result 102 states and 154 transitions. [2020-09-24 20:24:14,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:24:14,841 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-09-24 20:24:14,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:14,844 INFO L225 Difference]: With dead ends: 102 [2020-09-24 20:24:14,846 INFO L226 Difference]: Without dead ends: 96 [2020-09-24 20:24:14,848 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-09-24 20:24:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-09-24 20:24:14,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 60. [2020-09-24 20:24:14,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 20:24:14,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 90 transitions. [2020-09-24 20:24:14,881 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 90 transitions. Word has length 51 [2020-09-24 20:24:14,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:14,883 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 90 transitions. [2020-09-24 20:24:14,883 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 20:24:14,883 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 90 transitions. [2020-09-24 20:24:14,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:24:14,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:14,896 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:14,896 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:24:14,897 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:14,897 INFO L82 PathProgramCache]: Analyzing trace with hash -1240721474, now seen corresponding path program 4 times [2020-09-24 20:24:14,897 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:14,898 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606137838] [2020-09-24 20:24:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:14,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:14,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:19,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:19,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:24:19,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:19,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:19,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:24:19,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:24:19,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:19,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:19,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:19,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:19,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:19,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:19,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:24:19,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:19,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:19,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:19,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:19,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:19,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:24,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:24:24,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:24,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 20:24:24,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:24,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:24,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:24:24,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:24,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:24,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:24,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:25,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:25,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:25,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:24:25,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:25,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:25,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:25,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:25,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:25,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:25,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:25,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:24:25,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:24:25,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-09-24 20:24:25,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:25,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:25,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:24:25,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:25,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:25,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:25,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:25,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:25,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:25,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:24:25,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:25,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:25,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:25,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:25,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:25,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:25,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:25,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:25,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:25,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:24:25,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:25,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:25,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:25,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:24:25,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 21 proven. 20 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 20:24:25,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606137838] [2020-09-24 20:24:25,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:25,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:24:25,385 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672773381] [2020-09-24 20:24:25,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:24:25,386 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:25,386 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:24:25,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:24:25,387 INFO L87 Difference]: Start difference. First operand 60 states and 90 transitions. Second operand 9 states. [2020-09-24 20:24:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:25,518 INFO L93 Difference]: Finished difference Result 130 states and 253 transitions. [2020-09-24 20:24:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:24:25,519 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 20:24:25,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:25,522 INFO L225 Difference]: With dead ends: 130 [2020-09-24 20:24:25,522 INFO L226 Difference]: Without dead ends: 124 [2020-09-24 20:24:25,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:25,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-09-24 20:24:25,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 86. [2020-09-24 20:24:25,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 20:24:25,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 157 transitions. [2020-09-24 20:24:25,541 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 157 transitions. Word has length 52 [2020-09-24 20:24:25,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:25,542 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 157 transitions. [2020-09-24 20:24:25,542 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:24:25,542 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 157 transitions. [2020-09-24 20:24:25,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-24 20:24:25,544 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:25,544 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:25,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:24:25,545 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:25,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:25,545 INFO L82 PathProgramCache]: Analyzing trace with hash -1745465149, now seen corresponding path program 5 times [2020-09-24 20:24:25,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:25,546 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991877042] [2020-09-24 20:24:25,546 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:25,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:30,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-09-24 20:24:30,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:30,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:24:30,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:24:30,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:24:30,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:30,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:30,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:30,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:30,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:30,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:30,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:30,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:30,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:30,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:30,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:30,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:30,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:31,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:31,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:31,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:31,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:31,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-24 20:24:35,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:35,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 20:24:35,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:24:35,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-24 20:24:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:35,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:24:35,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:35,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-09-24 20:24:35,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:24:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:35,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:35,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:35,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:35,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:24:35,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:35,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:35,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:35,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:35,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:24:35,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:24:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:37,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:39,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:24:39,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3693 [2020-09-24 20:24:39,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:24:39,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:39,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:39,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:39,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:39,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:39,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:39,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:24:39,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:39,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:39,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:39,515 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:39,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:39,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:39,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:39,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:24:39,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-09-24 20:24:39,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:39,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:24:39,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:39,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:39,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:39,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:39,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:39,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:39,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:39,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:39,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:24:39,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:39,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:39,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:39,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:39,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:39,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:39,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:39,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:39,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:24:39,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:39,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:39,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:24:39,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:39,925 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 83 proven. 58 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-09-24 20:24:39,931 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [991877042] [2020-09-24 20:24:39,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:39,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:24:39,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1760639423] [2020-09-24 20:24:39,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:24:39,933 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:39,933 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:24:39,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:24:39,934 INFO L87 Difference]: Start difference. First operand 86 states and 157 transitions. Second operand 10 states. [2020-09-24 20:24:40,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:40,225 INFO L93 Difference]: Finished difference Result 196 states and 403 transitions. [2020-09-24 20:24:40,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-24 20:24:40,226 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-24 20:24:40,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:40,229 INFO L225 Difference]: With dead ends: 196 [2020-09-24 20:24:40,229 INFO L226 Difference]: Without dead ends: 116 [2020-09-24 20:24:40,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=219, Unknown=0, NotChecked=0, Total=306 [2020-09-24 20:24:40,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2020-09-24 20:24:40,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 95. [2020-09-24 20:24:40,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-09-24 20:24:40,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 160 transitions. [2020-09-24 20:24:40,262 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 160 transitions. Word has length 85 [2020-09-24 20:24:40,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:40,264 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 160 transitions. [2020-09-24 20:24:40,265 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:24:40,265 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 160 transitions. [2020-09-24 20:24:40,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-24 20:24:40,269 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:40,269 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:40,269 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:24:40,269 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:40,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:40,270 INFO L82 PathProgramCache]: Analyzing trace with hash 100073883, now seen corresponding path program 6 times [2020-09-24 20:24:40,270 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:40,270 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1389776189] [2020-09-24 20:24:40,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:40,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:40,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:43,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking...