/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/Fibonacci02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:22:58,118 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:22:58,122 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:22:58,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:22:58,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:22:58,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:22:58,176 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:22:58,184 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:22:58,188 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:22:58,191 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:22:58,192 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:22:58,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:22:58,194 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:22:58,194 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:22:58,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:22:58,199 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:22:58,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:22:58,204 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:22:58,206 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:22:58,213 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:22:58,216 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:22:58,219 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:22:58,220 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:22:58,221 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:22:58,227 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:22:58,227 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:22:58,227 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:22:58,230 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:22:58,231 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:22:58,232 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:22:58,233 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:22:58,233 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:22:58,234 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:22:58,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:22:58,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:22:58,237 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:22:58,238 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:22:58,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:22:58,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:22:58,240 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:22:58,241 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:22:58,242 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 20:22:58,296 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:22:58,297 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:22:58,300 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:22:58,300 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:22:58,300 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:22:58,300 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:22:58,301 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:22:58,301 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:22:58,301 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:22:58,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:22:58,303 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:22:58,303 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:22:58,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:22:58,304 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:22:58,304 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:22:58,304 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:22:58,304 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:22:58,305 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:22:58,305 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:22:58,305 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:22:58,305 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:22:58,306 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:22:58,306 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:22:58,306 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:22:58,306 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:22:58,306 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:22:58,307 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:22:58,307 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:22:58,307 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:22:58,307 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 20:22:58,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:22:58,811 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:22:58,817 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:22:58,820 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:22:58,821 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:22:58,822 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci02.c [2020-09-24 20:22:58,911 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84b1983a8/6ff8c6c99fbb440d97db2a4e0dc38796/FLAGee3c926ee [2020-09-24 20:22:59,493 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:22:59,494 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci02.c [2020-09-24 20:22:59,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84b1983a8/6ff8c6c99fbb440d97db2a4e0dc38796/FLAGee3c926ee [2020-09-24 20:22:59,847 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/84b1983a8/6ff8c6c99fbb440d97db2a4e0dc38796 [2020-09-24 20:22:59,861 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:22:59,867 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:22:59,868 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:22:59,869 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:22:59,873 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:22:59,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:59" (1/1) ... [2020-09-24 20:22:59,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@194bd3d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:22:59, skipping insertion in model container [2020-09-24 20:22:59,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:22:59" (1/1) ... [2020-09-24 20:22:59,888 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:22:59,911 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:00,128 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:00,134 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:00,154 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:00,172 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:00,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00 WrapperNode [2020-09-24 20:23:00,173 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:00,174 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:00,174 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:00,174 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:00,192 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,193 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,204 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,207 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (1/1) ... [2020-09-24 20:23:00,209 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:00,210 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:00,210 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:00,210 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:00,212 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (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 20:23:00,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:00,377 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:00,377 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-24 20:23:00,377 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-24 20:23:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:00,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:00,575 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:00,576 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:00,581 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:00 BoogieIcfgContainer [2020-09-24 20:23:00,582 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:00,583 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:00,583 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:00,587 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:00,588 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:22:59" (1/3) ... [2020-09-24 20:23:00,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739b4cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:00, skipping insertion in model container [2020-09-24 20:23:00,589 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:00" (2/3) ... [2020-09-24 20:23:00,589 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@739b4cbb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:00, skipping insertion in model container [2020-09-24 20:23:00,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:00" (3/3) ... [2020-09-24 20:23:00,592 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci02.c [2020-09-24 20:23:00,611 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:00,622 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:00,649 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:00,688 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:00,689 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:00,689 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:00,689 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:00,689 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:00,689 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:00,690 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:00,692 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:00,721 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 20:23:00,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:23:00,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:00,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:00,736 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:00,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:00,746 INFO L82 PathProgramCache]: Analyzing trace with hash 2085313281, now seen corresponding path program 1 times [2020-09-24 20:23:00,761 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:00,761 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1253705585] [2020-09-24 20:23:00,762 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:00,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:00,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:00,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:23:00,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:00,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 20:23:00,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:00,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:23:00,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:01,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:01,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:01,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:01,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:01,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:01,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:01,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:01,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 20:23:01,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:01,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:01,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:01,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:01,108 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 20:23:01,109 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1253705585] [2020-09-24 20:23:01,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:01,112 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:01,113 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369598507] [2020-09-24 20:23:01,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:01,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:01,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:01,133 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:01,135 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 20:23:01,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:01,253 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 20:23:01,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:01,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:23:01,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:01,268 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:23:01,269 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:23:01,273 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:01,292 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:23:01,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:23:01,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:01,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:01,327 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 20:23:01,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:01,328 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:01,328 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:01,328 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:01,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:23:01,331 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:01,331 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 20:23:01,332 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:23:01,332 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:01,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:01,332 INFO L82 PathProgramCache]: Analyzing trace with hash -93144392, now seen corresponding path program 1 times [2020-09-24 20:23:01,332 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:01,333 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070733998] [2020-09-24 20:23:01,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:01,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-24 20:23:01,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:01,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:01,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:01,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:01,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:01,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:23:01,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:01,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:01,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:01,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:01,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:01,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:01,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-24 20:23:01,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:23:01,634 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 20:23:01,634 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070733998] [2020-09-24 20:23:01,635 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:01,635 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:01,635 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739603326] [2020-09-24 20:23:01,637 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:01,639 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:01,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:01,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:01,640 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 20:23:01,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:01,710 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 20:23:01,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:01,711 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 20:23:01,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:01,713 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:23:01,713 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:23:01,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:01,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:23:01,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 20:23:01,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:01,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:01,724 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 20:23:01,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:01,724 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:01,724 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:01,724 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:01,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:23:01,726 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:01,726 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 20:23:01,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:01,727 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:01,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:01,727 INFO L82 PathProgramCache]: Analyzing trace with hash 37359445, now seen corresponding path program 1 times [2020-09-24 20:23:01,728 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:01,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1107183558] [2020-09-24 20:23:01,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:01,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:01,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:23:02,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:02,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 557 [2020-09-24 20:23:02,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:02,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:02,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 20:23:02,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:02,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:02,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:02,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:02,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:02,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:02,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 20:23:02,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:02,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:02,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:23:02,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:02,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:02,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:02,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:02,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:02,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:02,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:02,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:02,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:02,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:23:02,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:02,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:02,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:02,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:23:02,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1107183558] [2020-09-24 20:23:02,712 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:02,712 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:23:02,713 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34639919] [2020-09-24 20:23:02,715 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:02,715 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:02,715 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:02,716 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:02,716 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 20:23:02,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:02,817 INFO L93 Difference]: Finished difference Result 62 states and 79 transitions. [2020-09-24 20:23:02,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:02,818 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 20:23:02,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:02,820 INFO L225 Difference]: With dead ends: 62 [2020-09-24 20:23:02,820 INFO L226 Difference]: Without dead ends: 40 [2020-09-24 20:23:02,821 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:02,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-24 20:23:02,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-09-24 20:23:02,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 20:23:02,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2020-09-24 20:23:02,832 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 33 [2020-09-24 20:23:02,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:02,832 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2020-09-24 20:23:02,833 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:02,833 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2020-09-24 20:23:02,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:23:02,835 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:02,835 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 20:23:02,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:02,836 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:02,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:02,836 INFO L82 PathProgramCache]: Analyzing trace with hash -878558549, now seen corresponding path program 1 times [2020-09-24 20:23:02,837 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:02,837 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1985706664] [2020-09-24 20:23:02,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:02,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:23:03,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:03,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-09-24 20:23:03,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:23:03,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:23:03,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:03,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:03,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:03,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:03,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:03,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-24 20:23:03,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:03,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:23:03,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,548 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:03,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:03,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:23:03,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:03,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:03,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:03,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:03,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:03,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:23:03,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:03,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:03,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:03,659 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:23:03,659 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1985706664] [2020-09-24 20:23:03,660 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:03,660 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:23:03,660 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [950995211] [2020-09-24 20:23:03,661 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:23:03,661 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:03,661 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:23:03,662 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:03,662 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2020-09-24 20:23:03,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:03,806 INFO L93 Difference]: Finished difference Result 80 states and 105 transitions. [2020-09-24 20:23:03,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:03,807 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 20:23:03,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:03,810 INFO L225 Difference]: With dead ends: 80 [2020-09-24 20:23:03,810 INFO L226 Difference]: Without dead ends: 48 [2020-09-24 20:23:03,811 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:23:03,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-24 20:23:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-09-24 20:23:03,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 20:23:03,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-09-24 20:23:03,826 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 35 [2020-09-24 20:23:03,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:03,827 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-09-24 20:23:03,827 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:23:03,828 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-09-24 20:23:03,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:23:03,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:03,834 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 20:23:03,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:03,834 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:03,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:03,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1945698440, now seen corresponding path program 1 times [2020-09-24 20:23:03,839 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:03,839 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [571501301] [2020-09-24 20:23:03,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:03,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:04,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:23:08,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:08,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:23:08,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:08,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:23:08,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 20:23:08,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:08,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:08,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:08,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:08,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:08,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:08,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:08,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:08,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:08,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:08,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:08,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:23:09,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:09,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 20:23:09,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:09,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:23:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:09,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:09,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:09,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:09,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:09,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:09,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:09,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 20:23:09,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:09,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:09,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:09,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:10,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:10,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:10,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:10,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:10,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:10,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:10,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:10,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:10,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:10,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:23:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:10,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:10,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:10,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:23:10,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:10,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:10,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:10,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:10,110 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 28 proven. 11 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:23:10,111 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [571501301] [2020-09-24 20:23:10,111 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:10,111 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:23:10,112 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708825277] [2020-09-24 20:23:10,112 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:23:10,112 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:10,113 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:23:10,113 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:23:10,113 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 8 states. [2020-09-24 20:23:10,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:10,294 INFO L93 Difference]: Finished difference Result 92 states and 123 transitions. [2020-09-24 20:23:10,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:23:10,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 20:23:10,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:10,297 INFO L225 Difference]: With dead ends: 92 [2020-09-24 20:23:10,297 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 20:23:10,299 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:23:10,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 20:23:10,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 50. [2020-09-24 20:23:10,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-24 20:23:10,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 63 transitions. [2020-09-24 20:23:10,310 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 63 transitions. Word has length 51 [2020-09-24 20:23:10,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:10,311 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 63 transitions. [2020-09-24 20:23:10,311 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:23:10,311 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 63 transitions. [2020-09-24 20:23:10,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:23:10,314 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:10,314 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 20:23:10,314 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:23:10,314 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:10,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:10,315 INFO L82 PathProgramCache]: Analyzing trace with hash 1009539825, now seen corresponding path program 2 times [2020-09-24 20:23:10,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:10,315 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [346652842] [2020-09-24 20:23:10,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:10,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:10,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:10,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:23:12,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:12,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-09-24 20:23:12,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:12,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:23:12,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:12,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:12,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:12,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:12,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:12,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:12,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:12,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:12,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:12,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:12,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:14,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:14,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1880 [2020-09-24 20:23:14,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:14,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:14,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:23:14,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:14,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:14,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-24 20:23:14,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:14,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:14,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:14,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:23:14,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:14,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:14,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:14,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:23:14,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:14,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:14,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:14,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:14,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:14,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:14,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:14,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:14,518 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 10 proven. 28 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 20:23:14,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [346652842] [2020-09-24 20:23:14,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:14,520 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:23:14,520 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111310053] [2020-09-24 20:23:14,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:23:14,521 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:14,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:23:14,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:23:14,522 INFO L87 Difference]: Start difference. First operand 50 states and 63 transitions. Second operand 8 states. [2020-09-24 20:23:14,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:14,686 INFO L93 Difference]: Finished difference Result 114 states and 172 transitions. [2020-09-24 20:23:14,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:23:14,688 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 52 [2020-09-24 20:23:14,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:14,695 INFO L225 Difference]: With dead ends: 114 [2020-09-24 20:23:14,696 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 20:23:14,698 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:23:14,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 20:23:14,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 64. [2020-09-24 20:23:14,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-09-24 20:23:14,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 88 transitions. [2020-09-24 20:23:14,726 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 88 transitions. Word has length 52 [2020-09-24 20:23:14,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:14,727 INFO L479 AbstractCegarLoop]: Abstraction has 64 states and 88 transitions. [2020-09-24 20:23:14,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:23:14,727 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 88 transitions. [2020-09-24 20:23:14,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 20:23:14,735 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:14,736 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:14,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:23:14,736 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:14,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:14,736 INFO L82 PathProgramCache]: Analyzing trace with hash 2065276260, now seen corresponding path program 3 times [2020-09-24 20:23:14,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:14,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [14643191] [2020-09-24 20:23:14,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:14,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:15,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:16,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:19,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:23:19,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:23:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:23:19,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:23:19,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:23:19,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:19,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:19,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:19,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:19,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:19,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:19,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:19,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:19,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:19,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:19,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:19,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:19,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:19,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:20,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:21,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:23:21,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:21,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2137 [2020-09-24 20:23:21,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:21,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:21,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:21,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:23:21,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:21,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:21,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:21,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:22,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:23,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:23,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1064 [2020-09-24 20:23:23,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:23:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:23,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:23,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:23,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:23,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:23,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:23,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:23,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-09-24 20:23:23,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:23,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:23,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:23,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:23,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:23,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:23,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:23,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:23:23,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:23,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:23,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:23,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:23,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:23,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:23,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:23,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:23,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:23,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:23,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:23,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:23,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:23,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:23,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:23,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:23,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:23,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:23,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:23,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:23,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:23,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:23,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:23,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:23,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:23:23,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:23,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:23,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:23,514 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 62 proven. 31 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 20:23:23,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [14643191] [2020-09-24 20:23:23,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:23,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:23:23,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613406479] [2020-09-24 20:23:23,518 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:23:23,519 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:23,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:23:23,520 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:23,520 INFO L87 Difference]: Start difference. First operand 64 states and 88 transitions. Second operand 9 states. [2020-09-24 20:23:23,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:23,746 INFO L93 Difference]: Finished difference Result 129 states and 188 transitions. [2020-09-24 20:23:23,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:23:23,747 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 70 [2020-09-24 20:23:23,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:23,748 INFO L225 Difference]: With dead ends: 129 [2020-09-24 20:23:23,749 INFO L226 Difference]: Without dead ends: 67 [2020-09-24 20:23:23,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=162, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:23:23,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-24 20:23:23,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-24 20:23:23,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-24 20:23:23,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-09-24 20:23:23,759 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 70 [2020-09-24 20:23:23,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:23,759 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-09-24 20:23:23,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:23:23,760 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-09-24 20:23:23,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 20:23:23,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:23,761 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:23,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:23:23,762 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:23,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:23,762 INFO L82 PathProgramCache]: Analyzing trace with hash -132768542, now seen corresponding path program 4 times [2020-09-24 20:23:23,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:23,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [819598494] [2020-09-24 20:23:23,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:23,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:23,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:28,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 20:23:28,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:28,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:23:28,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:28,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:23:28,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:28,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:28,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:28,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:28,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:28,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:28,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:28,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:28,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:28,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:28,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:28,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:28,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:28,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:30,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:33,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 20:23:33,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:33,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 20:23:33,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:33,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:23:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:33,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 20:23:33,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:33,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:33,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:33,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:33,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:35,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1638 [2020-09-24 20:23:35,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:35,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:35,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:35,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 20:23:35,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:35,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:35,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:35,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 20:23:35,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:35,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:35,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:35,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:35,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:35,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:35,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:35,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:35,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:35,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:35,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:35,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:23:35,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:35,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:35,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:35,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:35,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:35,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:35,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:35,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:35,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:35,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:35,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:35,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:35,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:35,895 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 30 proven. 105 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-09-24 20:23:35,896 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [819598494] [2020-09-24 20:23:35,896 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:35,896 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:23:35,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1837410089] [2020-09-24 20:23:35,897 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:23:35,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:35,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:23:35,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:23:35,898 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 9 states. [2020-09-24 20:23:36,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:36,090 INFO L93 Difference]: Finished difference Result 145 states and 187 transitions. [2020-09-24 20:23:36,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:23:36,092 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-24 20:23:36,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:36,094 INFO L225 Difference]: With dead ends: 145 [2020-09-24 20:23:36,094 INFO L226 Difference]: Without dead ends: 92 [2020-09-24 20:23:36,095 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:23:36,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-24 20:23:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 86. [2020-09-24 20:23:36,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 20:23:36,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 106 transitions. [2020-09-24 20:23:36,106 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 106 transitions. Word has length 87 [2020-09-24 20:23:36,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:36,107 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 106 transitions. [2020-09-24 20:23:36,107 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:23:36,107 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 106 transitions. [2020-09-24 20:23:36,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 20:23:36,109 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:36,109 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:36,109 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:23:36,109 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:36,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:36,110 INFO L82 PathProgramCache]: Analyzing trace with hash 1701259204, now seen corresponding path program 5 times [2020-09-24 20:23:36,110 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:36,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [754594320] [2020-09-24 20:23:36,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:36,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:36,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:36,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:41,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 20:23:41,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 20:23:41,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:41,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:23:41,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:41,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:41,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:41,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:41,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:41,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:41,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:41,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:41,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:41,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:41,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:41,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:44,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:45,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:46,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:46,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 20:23:46,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:23:46,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:23:46,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:23:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-24 20:23:46,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:46,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:46,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:46,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:46,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:46,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:46,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:47,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:51,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:51,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 20:23:51,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:23:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:23:51,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:23:51,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-09-24 20:23:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:51,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:51,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:51,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:51,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:51,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:53,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:53,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1814 [2020-09-24 20:23:53,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:23:53,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:23:53,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:53,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:53,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-09-24 20:23:53,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:23:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:23:53,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,360 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:53,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:23:53,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:53,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:53,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:53,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:53,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:53,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:53,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:23:53,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:23:53,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:53,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 20:23:53,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:53,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:23:53,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:53,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:23:53,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:53,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:53,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:53,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:53,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-09-24 20:23:53,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:23:53,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 20:23:53,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:23:53,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:23:53,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:53,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:53,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:53,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:53,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:53,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:53,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:53,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:53,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:53,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:23:53,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:53,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:53,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:53,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:53,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:53,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:53,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:53,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:53,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:53,576 INFO L134 CoverageAnalysis]: Checked inductivity of 646 backedges. 63 proven. 277 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2020-09-24 20:23:53,577 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [754594320] [2020-09-24 20:23:53,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:53,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:23:53,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249396815] [2020-09-24 20:23:53,578 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:23:53,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:53,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:23:53,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:23:53,579 INFO L87 Difference]: Start difference. First operand 86 states and 106 transitions. Second operand 10 states. [2020-09-24 20:23:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:53,809 INFO L93 Difference]: Finished difference Result 201 states and 262 transitions. [2020-09-24 20:23:53,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 20:23:53,810 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 140 [2020-09-24 20:23:53,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:53,816 INFO L225 Difference]: With dead ends: 201 [2020-09-24 20:23:53,816 INFO L226 Difference]: Without dead ends: 195 [2020-09-24 20:23:53,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-09-24 20:23:53,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-09-24 20:23:53,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 177. [2020-09-24 20:23:53,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-24 20:23:53,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 234 transitions. [2020-09-24 20:23:53,854 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 234 transitions. Word has length 140 [2020-09-24 20:23:53,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:53,854 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 234 transitions. [2020-09-24 20:23:53,855 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:23:53,855 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 234 transitions. [2020-09-24 20:23:53,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-24 20:23:53,862 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:53,862 INFO L422 BasicCegarLoop]: trace histogram [25, 25, 20, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 8, 8, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:53,862 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:23:53,862 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:53,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:53,862 INFO L82 PathProgramCache]: Analyzing trace with hash -217722271, now seen corresponding path program 6 times [2020-09-24 20:23:53,863 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:53,863 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1748895968] [2020-09-24 20:23:53,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:53,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:53,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:54,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking...