/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 SequenceOfStatements --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 --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/sum60-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 18:31:56,904 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 18:31:56,907 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 18:31:56,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 18:31:56,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 18:31:56,933 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 18:31:56,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 18:31:56,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 18:31:56,938 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 18:31:56,942 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 18:31:56,943 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 18:31:56,944 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 18:31:56,947 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 18:31:56,948 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 18:31:56,949 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 18:31:56,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 18:31:56,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 18:31:56,954 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 18:31:56,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 18:31:56,957 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 18:31:56,958 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 18:31:56,959 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 18:31:56,960 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 18:31:56,961 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 18:31:56,963 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 18:31:56,964 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 18:31:56,964 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 18:31:56,965 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 18:31:56,965 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 18:31:56,966 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 18:31:56,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 18:31:56,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 18:31:56,968 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 18:31:56,969 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 18:31:56,970 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 18:31:56,970 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 18:31:56,971 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 18:31:56,971 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 18:31:56,971 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 18:31:56,972 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 18:31:56,973 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 18:31:56,974 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 [2020-10-12 18:31:56,997 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 18:31:56,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 18:31:56,999 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 18:31:56,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 18:31:56,999 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 18:31:57,000 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 18:31:57,000 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 18:31:57,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 18:31:57,000 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 18:31:57,000 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 18:31:57,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 18:31:57,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 18:31:57,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 18:31:57,001 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 18:31:57,001 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 18:31:57,002 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 18:31:57,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 18:31:57,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 18:31:57,002 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 18:31:57,002 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 18:31:57,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 18:31:57,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 18:31:57,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 18:31:57,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 18:31:57,003 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 18:31:57,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 18:31:57,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 18:31:57,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 18:31:57,004 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 18:31:57,004 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 -> SequenceOfStatements 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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=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;unknown-allowed=true; [2020-10-12 18:31:57,322 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 18:31:57,334 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 18:31:57,338 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 18:31:57,339 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 18:31:57,340 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 18:31:57,341 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/sum60-2.i [2020-10-12 18:31:57,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/570054b7c/0aaf25067b9f435798bcc071fed0be04/FLAGfcf0ecf7a [2020-10-12 18:31:57,859 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 18:31:57,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/sum60-2.i [2020-10-12 18:31:57,867 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/570054b7c/0aaf25067b9f435798bcc071fed0be04/FLAGfcf0ecf7a [2020-10-12 18:31:58,264 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/570054b7c/0aaf25067b9f435798bcc071fed0be04 [2020-10-12 18:31:58,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 18:31:58,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 18:31:58,281 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 18:31:58,281 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 18:31:58,285 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 18:31:58,286 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:31:58" (1/1) ... [2020-10-12 18:31:58,289 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5bf15244 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58, skipping insertion in model container [2020-10-12 18:31:58,289 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 06:31:58" (1/1) ... [2020-10-12 18:31:58,298 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 18:31:58,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 18:31:58,537 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:31:58,549 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 18:31:58,573 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 18:31:58,590 INFO L208 MainTranslator]: Completed translation [2020-10-12 18:31:58,591 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58 WrapperNode [2020-10-12 18:31:58,591 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 18:31:58,592 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 18:31:58,592 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 18:31:58,592 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 18:31:58,683 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58" (1/1) ... [2020-10-12 18:31:58,683 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58" (1/1) ... [2020-10-12 18:31:58,692 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58" (1/1) ... [2020-10-12 18:31:58,693 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58" (1/1) ... [2020-10-12 18:31:58,702 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58" (1/1) ... [2020-10-12 18:31:58,708 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58" (1/1) ... [2020-10-12 18:31:58,709 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58" (1/1) ... [2020-10-12 18:31:58,712 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 18:31:58,712 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 18:31:58,712 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 18:31:58,713 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 18:31:58,714 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58" (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 [2020-10-12 18:31:58,787 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 18:31:58,788 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 18:31:58,788 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-12 18:31:58,788 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 18:31:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 18:31:58,788 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 18:31:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-12 18:31:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 18:31:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 18:31:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 18:31:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 18:31:58,789 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 18:31:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 18:31:58,790 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 18:31:59,148 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 18:31:59,148 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-12 18:31:59,152 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:31:59 BoogieIcfgContainer [2020-10-12 18:31:59,152 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 18:31:59,154 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 18:31:59,154 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 18:31:59,157 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 18:31:59,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 06:31:58" (1/3) ... [2020-10-12 18:31:59,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a05b2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:31:59, skipping insertion in model container [2020-10-12 18:31:59,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 06:31:58" (2/3) ... [2020-10-12 18:31:59,159 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a05b2a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 06:31:59, skipping insertion in model container [2020-10-12 18:31:59,159 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 06:31:59" (3/3) ... [2020-10-12 18:31:59,161 INFO L109 eAbstractionObserver]: Analyzing ICFG sum60-2.i [2020-10-12 18:31:59,172 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 18:31:59,179 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 18:31:59,193 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 18:31:59,218 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 18:31:59,218 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 18:31:59,218 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 18:31:59,219 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 18:31:59,219 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 18:31:59,219 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 18:31:59,219 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 18:31:59,220 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 18:31:59,239 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-12 18:31:59,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-12 18:31:59,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:31:59,247 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:31:59,248 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:31:59,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:31:59,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1461178031, now seen corresponding path program 1 times [2020-10-12 18:31:59,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:31:59,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [883337929] [2020-10-12 18:31:59,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:31:59,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:31:59,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:31:59,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:32:00,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:32:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1063 [2020-10-12 18:32:00,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:32:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:00,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-12 18:32:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 18:32:00,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:00,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:00,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:00,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 18:32:00,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:00,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:00,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:00,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:32:00,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:00,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:32:00,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:32:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:00,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:32:00,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:32:00,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:32:00,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:00,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-12 18:32:00,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:32:00,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:00,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:32:00,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:32:00,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:00,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:00,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:00,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:32:00,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:00,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 18:32:00,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:32:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:00,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 18:32:00,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:00,898 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:32:00,899 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [883337929] [2020-10-12 18:32:00,901 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 18:32:00,902 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-10-12 18:32:00,903 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1583333002] [2020-10-12 18:32:00,907 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:32:00,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:00,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:32:00,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:32:00,925 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 11 states. [2020-10-12 18:32:01,216 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:01,217 INFO L93 Difference]: Finished difference Result 83 states and 120 transitions. [2020-10-12 18:32:01,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:32:01,219 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 32 [2020-10-12 18:32:01,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:01,230 INFO L225 Difference]: With dead ends: 83 [2020-10-12 18:32:01,230 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 18:32:01,235 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:32:01,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 18:32:01,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 37. [2020-10-12 18:32:01,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:32:01,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-10-12 18:32:01,295 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 32 [2020-10-12 18:32:01,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:01,296 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-10-12 18:32:01,296 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:32:01,296 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-10-12 18:32:01,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 18:32:01,300 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:01,300 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:01,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 18:32:01,301 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:01,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:01,302 INFO L82 PathProgramCache]: Analyzing trace with hash -222611607, now seen corresponding path program 1 times [2020-10-12 18:32:01,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:01,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1285766746] [2020-10-12 18:32:01,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:01,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:32:02,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:32:02,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1226 [2020-10-12 18:32:02,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:32:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 36 [2020-10-12 18:32:02,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:32:02,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:02,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 18:32:02,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:02,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:02,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:02,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:32:02,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:02,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:02,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:32:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:02,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:32:02,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-10-12 18:32:02,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-12 18:32:02,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:02,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-12 18:32:02,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 18:32:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:02,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-12 18:32:02,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-12 18:32:02,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:02,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-12 18:32:02,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:02,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-12 18:32:02,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:02,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 18:32:02,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:02,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 18:32:02,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:02,663 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-12 18:32:02,664 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1285766746] [2020-10-12 18:32:02,665 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:02,665 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-12 18:32:02,665 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [528980549] [2020-10-12 18:32:02,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 18:32:02,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:02,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 18:32:02,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 18:32:02,671 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 5 states. [2020-10-12 18:32:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:02,781 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-10-12 18:32:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 18:32:02,781 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-10-12 18:32:02,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:02,783 INFO L225 Difference]: With dead ends: 58 [2020-10-12 18:32:02,783 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 18:32:02,785 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:32:02,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 18:32:02,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 29. [2020-10-12 18:32:02,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-12 18:32:02,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 33 transitions. [2020-10-12 18:32:02,806 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 33 transitions. Word has length 34 [2020-10-12 18:32:02,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:02,806 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 33 transitions. [2020-10-12 18:32:02,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 18:32:02,807 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 33 transitions. [2020-10-12 18:32:02,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-12 18:32:02,810 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:02,811 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:02,811 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 18:32:02,811 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:02,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:02,814 INFO L82 PathProgramCache]: Analyzing trace with hash -1311690489, now seen corresponding path program 2 times [2020-10-12 18:32:02,814 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:02,815 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2011197226] [2020-10-12 18:32:02,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:02,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:03,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:07,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:07,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:32:07,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-12 18:32:07,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 18:32:07,858 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:32:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 18:32:07,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-12 18:32:07,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:08,244 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 32 [2020-10-12 18:32:08,393 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 32 [2020-10-12 18:32:09,020 WARN L193 SmtUtils]: Spent 568.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 77 [2020-10-12 18:32:09,266 WARN L193 SmtUtils]: Spent 156.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 45 [2020-10-12 18:32:09,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:09,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:09,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:09,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:09,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:09,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:09,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:32:09,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:09,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:09,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:09,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:09,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:09,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:09,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:09,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:09,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:32:09,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 18:32:09,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:32:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:09,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:32:09,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:10,138 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 51 [2020-10-12 18:32:10,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 18:32:10,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:10,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:10,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:10,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:32:10,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:10,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-12 18:32:10,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:32:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:10,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:32:10,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:11,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:32:11,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:11,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:11,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:11,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:32:11,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:11,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-12 18:32:11,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:11,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:32:11,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:32:11,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:11,820 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 6 proven. 40 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-12 18:32:11,821 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2011197226] [2020-10-12 18:32:11,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:11,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:32:11,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137848142] [2020-10-12 18:32:11,825 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:32:11,825 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:11,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:32:11,827 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:32:11,827 INFO L87 Difference]: Start difference. First operand 29 states and 33 transitions. Second operand 18 states. [2020-10-12 18:32:13,354 WARN L193 SmtUtils]: Spent 611.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 71 [2020-10-12 18:32:14,322 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-12 18:32:14,635 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 47 DAG size of output: 45 [2020-10-12 18:32:14,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:14,826 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-12 18:32:14,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:32:14,827 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 44 [2020-10-12 18:32:14,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:14,829 INFO L225 Difference]: With dead ends: 56 [2020-10-12 18:32:14,829 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 18:32:14,830 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:32:14,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 18:32:14,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-10-12 18:32:14,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-12 18:32:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-10-12 18:32:14,851 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 44 [2020-10-12 18:32:14,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:14,852 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-10-12 18:32:14,852 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:32:14,852 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-10-12 18:32:14,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-12 18:32:14,856 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:14,856 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:14,857 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-12 18:32:14,857 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:14,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:14,857 INFO L82 PathProgramCache]: Analyzing trace with hash -813487707, now seen corresponding path program 3 times [2020-10-12 18:32:14,858 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:14,858 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340820684] [2020-10-12 18:32:14,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:14,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:14,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:14,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:15,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:32:19,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:32:19,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:32:19,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:32:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-12 18:32:19,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:32:19,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:19,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:19,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:19,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:19,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:32:19,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:19,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:19,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:19,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:32:19,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:19,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:32:19,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:32:19,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:19,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:32:19,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-12 18:32:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:19,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:19,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-12 18:32:19,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-12 18:32:19,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 18:32:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 18:32:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:19,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-12 18:32:19,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:19,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:20,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:20,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-12 18:32:20,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:20,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-12 18:32:20,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 18:32:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:20,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-12 18:32:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:20,030 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-12 18:32:20,030 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340820684] [2020-10-12 18:32:20,030 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:20,031 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 18:32:20,031 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930893636] [2020-10-12 18:32:20,032 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 18:32:20,032 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:20,032 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 18:32:20,033 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 18:32:20,033 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 7 states. [2020-10-12 18:32:20,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:20,162 INFO L93 Difference]: Finished difference Result 65 states and 85 transitions. [2020-10-12 18:32:20,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 18:32:20,162 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 46 [2020-10-12 18:32:20,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:20,163 INFO L225 Difference]: With dead ends: 65 [2020-10-12 18:32:20,163 INFO L226 Difference]: Without dead ends: 34 [2020-10-12 18:32:20,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=45, Invalid=65, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:32:20,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-12 18:32:20,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2020-10-12 18:32:20,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-12 18:32:20,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-12 18:32:20,175 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 46 [2020-10-12 18:32:20,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:20,175 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-12 18:32:20,176 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 18:32:20,176 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-12 18:32:20,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-12 18:32:20,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:20,182 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:20,183 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-12 18:32:20,183 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:20,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:20,183 INFO L82 PathProgramCache]: Analyzing trace with hash 916686915, now seen corresponding path program 4 times [2020-10-12 18:32:20,184 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:20,184 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [103176002] [2020-10-12 18:32:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:20,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:20,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:20,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:20,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:21,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:25,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:32:25,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:32:25,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:32:25,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:32:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:32:25,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:25,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:25,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:25,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:25,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:25,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:25,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:25,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:25,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:25,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:25,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:25,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:25,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:25,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:25,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:32:25,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:25,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-12 18:32:25,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:25,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:32:25,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:25,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:32:25,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:25,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-12 18:32:25,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:25,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:25,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:32:25,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:25,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-12 18:32:25,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:32:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:25,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:32:25,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-12 18:32:25,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:25,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:25,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 18:32:25,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:25,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 18:32:25,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:25,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 18:32:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:25,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 18:32:25,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:25,384 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 48 proven. 96 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-12 18:32:25,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [103176002] [2020-10-12 18:32:25,385 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:25,385 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-12 18:32:25,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423192435] [2020-10-12 18:32:25,386 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-12 18:32:25,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:25,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-12 18:32:25,387 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-12 18:32:25,387 INFO L87 Difference]: Start difference. First operand 33 states and 37 transitions. Second operand 8 states. [2020-10-12 18:32:25,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:25,540 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-12 18:32:25,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 18:32:25,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-10-12 18:32:25,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:25,542 INFO L225 Difference]: With dead ends: 60 [2020-10-12 18:32:25,542 INFO L226 Difference]: Without dead ends: 36 [2020-10-12 18:32:25,543 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:32:25,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-12 18:32:25,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2020-10-12 18:32:25,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-12 18:32:25,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-10-12 18:32:25,553 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 56 [2020-10-12 18:32:25,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:25,553 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-10-12 18:32:25,553 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-12 18:32:25,554 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-10-12 18:32:25,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-12 18:32:25,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:25,558 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:25,558 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-12 18:32:25,558 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:25,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:25,559 INFO L82 PathProgramCache]: Analyzing trace with hash -1264663007, now seen corresponding path program 5 times [2020-10-12 18:32:25,559 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:25,560 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1828661830] [2020-10-12 18:32:25,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:25,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:25,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:25,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:29,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:30,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:30,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:32:30,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:32:30,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:32:30,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:30,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:32:30,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-10-12 18:32:30,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:32:30,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:30,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:30,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:30,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:30,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:30,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:30,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:30,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:32:30,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:30,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:30,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:30,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:30,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:30,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:30,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:30,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:30,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:32:30,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:30,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-12 18:32:30,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:32:30,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:30,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:32:30,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:30,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-12 18:32:30,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:30,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:30,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:30,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:30,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:32:30,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:30,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-12 18:32:30,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:30,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:32:30,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:30,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:32:30,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:30,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-12 18:32:30,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:30,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:30,803 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:30,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-12 18:32:30,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:30,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-12 18:32:30,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-12 18:32:30,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:30,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-12 18:32:30,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:30,814 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 75 proven. 150 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-12 18:32:30,814 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1828661830] [2020-10-12 18:32:30,815 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:30,815 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-12 18:32:30,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992472150] [2020-10-12 18:32:30,816 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-12 18:32:30,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:30,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-12 18:32:30,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-12 18:32:30,817 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 9 states. [2020-10-12 18:32:30,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:30,984 INFO L93 Difference]: Finished difference Result 64 states and 74 transitions. [2020-10-12 18:32:30,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-12 18:32:30,984 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 62 [2020-10-12 18:32:30,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:30,985 INFO L225 Difference]: With dead ends: 64 [2020-10-12 18:32:30,985 INFO L226 Difference]: Without dead ends: 38 [2020-10-12 18:32:30,986 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=126, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:32:30,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-12 18:32:30,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2020-10-12 18:32:30,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-12 18:32:30,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-10-12 18:32:30,992 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 62 [2020-10-12 18:32:30,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:30,993 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-10-12 18:32:30,993 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-12 18:32:30,993 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-10-12 18:32:30,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-12 18:32:30,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:30,994 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:30,994 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-12 18:32:30,994 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:30,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:30,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1251206527, now seen corresponding path program 6 times [2020-10-12 18:32:30,995 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:30,995 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1045890762] [2020-10-12 18:32:30,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:31,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:31,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:31,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:35,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:36,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:32:36,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:32:36,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:32:36,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:32:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:36,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:32:36,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:36,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:36,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:36,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:36,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:36,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:36,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:36,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:36,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:36,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:36,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:36,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:32:36,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:36,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-12 18:32:36,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:36,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:32:36,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:36,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:32:36,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:32:36,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-12 18:32:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:36,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:36,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:32:36,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:36,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 18:32:36,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:36,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:32:36,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:36,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:32:36,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:36,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-12 18:32:36,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:36,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-12 18:32:36,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:36,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-12 18:32:36,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-12 18:32:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:36,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-12 18:32:36,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:36,237 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 108 proven. 216 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2020-10-12 18:32:36,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1045890762] [2020-10-12 18:32:36,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:36,238 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-12 18:32:36,238 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80054045] [2020-10-12 18:32:36,239 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-12 18:32:36,239 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:36,239 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-12 18:32:36,240 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-12 18:32:36,240 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-10-12 18:32:36,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:36,442 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-10-12 18:32:36,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-12 18:32:36,442 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 68 [2020-10-12 18:32:36,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:36,443 INFO L225 Difference]: With dead ends: 68 [2020-10-12 18:32:36,443 INFO L226 Difference]: Without dead ends: 40 [2020-10-12 18:32:36,444 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=108, Invalid=164, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:32:36,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-12 18:32:36,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 39. [2020-10-12 18:32:36,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 18:32:36,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 18:32:36,451 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 68 [2020-10-12 18:32:36,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:36,451 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 18:32:36,451 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-12 18:32:36,451 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 18:32:36,452 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2020-10-12 18:32:36,452 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:36,452 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:36,453 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-12 18:32:36,453 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:36,453 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:36,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1668499037, now seen corresponding path program 7 times [2020-10-12 18:32:36,454 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:36,454 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1353774144] [2020-10-12 18:32:36,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:36,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:36,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:36,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:41,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 86 [2020-10-12 18:32:41,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:32:41,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:32:41,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:41,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:32:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 39 [2020-10-12 18:32:41,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:32:41,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:41,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:41,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:41,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:41,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:41,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:41,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 18:32:41,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:41,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:41,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:41,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:41,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:41,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:41,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:32:41,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-12 18:32:41,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:32:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:41,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:32:41,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:41,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-12 18:32:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:41,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:41,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:32:41,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-12 18:32:41,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:32:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:41,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:32:41,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:41,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-12 18:32:41,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:41,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:41,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:41,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-12 18:32:41,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:41,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-12 18:32:41,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:41,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-12 18:32:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:41,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-12 18:32:41,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:41,764 INFO L134 CoverageAnalysis]: Checked inductivity of 498 backedges. 147 proven. 294 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-10-12 18:32:41,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1353774144] [2020-10-12 18:32:41,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:41,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-12 18:32:41,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360711766] [2020-10-12 18:32:41,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-12 18:32:41,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-12 18:32:41,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-12 18:32:41,767 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 11 states. [2020-10-12 18:32:41,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:41,990 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-12 18:32:41,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-12 18:32:41,991 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 74 [2020-10-12 18:32:41,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:41,992 INFO L225 Difference]: With dead ends: 72 [2020-10-12 18:32:41,992 INFO L226 Difference]: Without dead ends: 42 [2020-10-12 18:32:41,993 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=135, Invalid=207, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:32:41,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-12 18:32:41,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2020-10-12 18:32:41,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-12 18:32:41,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-12 18:32:41,998 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 74 [2020-10-12 18:32:41,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:41,999 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-12 18:32:41,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-12 18:32:41,999 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-12 18:32:42,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-10-12 18:32:42,000 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:42,000 INFO L422 BasicCegarLoop]: trace histogram [24, 24, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:42,001 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-12 18:32:42,001 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:42,001 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:42,001 INFO L82 PathProgramCache]: Analyzing trace with hash -691713861, now seen corresponding path program 8 times [2020-10-12 18:32:42,001 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:42,002 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1256339766] [2020-10-12 18:32:42,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:42,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:46,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:47,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-12 18:32:47,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-12 18:32:47,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:32:47,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:32:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 68 [2020-10-12 18:32:47,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:32:47,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:47,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:47,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:47,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:47,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:47,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:47,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:47,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:47,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:47,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:47,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:47,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:47,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:47,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:47,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:47,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:32:47,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:47,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-12 18:32:47,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:32:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:47,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:32:47,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:47,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-12 18:32:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:47,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-12 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:47,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:32:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:47,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:32:47,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:47,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-12 18:32:47,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:47,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:47,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 18:32:47,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:47,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-12 18:32:47,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-12 18:32:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:47,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-12 18:32:47,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:47,281 INFO L134 CoverageAnalysis]: Checked inductivity of 639 backedges. 192 proven. 384 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-10-12 18:32:47,281 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1256339766] [2020-10-12 18:32:47,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:47,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-12 18:32:47,282 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2033091375] [2020-10-12 18:32:47,282 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-12 18:32:47,283 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:47,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-12 18:32:47,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-12 18:32:47,283 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 12 states. [2020-10-12 18:32:47,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:47,544 INFO L93 Difference]: Finished difference Result 76 states and 86 transitions. [2020-10-12 18:32:47,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-12 18:32:47,545 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 80 [2020-10-12 18:32:47,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:47,546 INFO L225 Difference]: With dead ends: 76 [2020-10-12 18:32:47,546 INFO L226 Difference]: Without dead ends: 44 [2020-10-12 18:32:47,548 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=165, Invalid=255, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:32:47,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-12 18:32:47,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-12 18:32:47,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-12 18:32:47,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-12 18:32:47,555 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 80 [2020-10-12 18:32:47,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:47,555 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-12 18:32:47,555 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-12 18:32:47,555 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-12 18:32:47,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-12 18:32:47,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:47,556 INFO L422 BasicCegarLoop]: trace histogram [27, 27, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:47,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-12 18:32:47,557 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:47,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:47,557 INFO L82 PathProgramCache]: Analyzing trace with hash -559264615, now seen corresponding path program 9 times [2020-10-12 18:32:47,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:47,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1291101413] [2020-10-12 18:32:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:47,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:52,571 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-12 18:32:52,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:52,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:32:52,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:32:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:32:52,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:32:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:52,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:52,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:52,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:52,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 18:32:52,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:52,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:52,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:52,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:52,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:52,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:52,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:32:52,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:52,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-12 18:32:52,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:32:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:52,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:32:52,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:52,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-12 18:32:52,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:52,868 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:32:52,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:52,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-12 18:32:52,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:32:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:32:52,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:52,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-12 18:32:52,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:52,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:52,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:52,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-12 18:32:52,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-12 18:32:52,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-12 18:32:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-12 18:32:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:52,960 INFO L134 CoverageAnalysis]: Checked inductivity of 798 backedges. 243 proven. 486 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-12 18:32:52,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1291101413] [2020-10-12 18:32:52,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:52,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-12 18:32:52,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956687955] [2020-10-12 18:32:52,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-12 18:32:52,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:52,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-12 18:32:52,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-12 18:32:52,962 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-12 18:32:53,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:53,242 INFO L93 Difference]: Finished difference Result 80 states and 90 transitions. [2020-10-12 18:32:53,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-12 18:32:53,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 86 [2020-10-12 18:32:53,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:53,244 INFO L225 Difference]: With dead ends: 80 [2020-10-12 18:32:53,244 INFO L226 Difference]: Without dead ends: 46 [2020-10-12 18:32:53,245 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=198, Invalid=308, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:32:53,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-12 18:32:53,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-12 18:32:53,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-12 18:32:53,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 49 transitions. [2020-10-12 18:32:53,251 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 49 transitions. Word has length 86 [2020-10-12 18:32:53,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:53,252 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 49 transitions. [2020-10-12 18:32:53,252 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-12 18:32:53,252 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 49 transitions. [2020-10-12 18:32:53,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-12 18:32:53,253 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:53,253 INFO L422 BasicCegarLoop]: trace histogram [30, 30, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:53,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-12 18:32:53,254 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:53,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:53,254 INFO L82 PathProgramCache]: Analyzing trace with hash -1915047433, now seen corresponding path program 10 times [2020-10-12 18:32:53,254 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:53,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700602874] [2020-10-12 18:32:53,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:53,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:53,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:53,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:53,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:58,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-12 18:32:58,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:32:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-12 18:32:58,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:32:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-10-12 18:32:58,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:32:58,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:58,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:32:58,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:58,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:58,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:32:58,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:32:58,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:32:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:32:58,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:32:58,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:58,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:32:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:58,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:58,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:58,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:58,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-12 18:32:58,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:32:58,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:58,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:32:58,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-12 18:32:58,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:58,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:58,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:32:58,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-12 18:32:58,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:32:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:58,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:32:58,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:58,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-12 18:32:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:58,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:32:58,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-12 18:32:58,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-12 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-12 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-12 18:32:58,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:32:58,613 INFO L134 CoverageAnalysis]: Checked inductivity of 975 backedges. 300 proven. 600 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2020-10-12 18:32:58,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700602874] [2020-10-12 18:32:58,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:32:58,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-12 18:32:58,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [686414781] [2020-10-12 18:32:58,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-12 18:32:58,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:32:58,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-12 18:32:58,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-12 18:32:58,616 INFO L87 Difference]: Start difference. First operand 45 states and 49 transitions. Second operand 14 states. [2020-10-12 18:32:58,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:32:58,935 INFO L93 Difference]: Finished difference Result 84 states and 94 transitions. [2020-10-12 18:32:58,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-12 18:32:58,936 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 92 [2020-10-12 18:32:58,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:32:58,937 INFO L225 Difference]: With dead ends: 84 [2020-10-12 18:32:58,937 INFO L226 Difference]: Without dead ends: 48 [2020-10-12 18:32:58,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=234, Invalid=366, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:32:58,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-12 18:32:58,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 47. [2020-10-12 18:32:58,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-12 18:32:58,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 51 transitions. [2020-10-12 18:32:58,947 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 51 transitions. Word has length 92 [2020-10-12 18:32:58,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:32:58,947 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 51 transitions. [2020-10-12 18:32:58,947 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-12 18:32:58,947 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 51 transitions. [2020-10-12 18:32:58,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-12 18:32:58,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:32:58,948 INFO L422 BasicCegarLoop]: trace histogram [33, 33, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:32:58,949 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-12 18:32:58,949 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:32:58,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:32:58,949 INFO L82 PathProgramCache]: Analyzing trace with hash -978921259, now seen corresponding path program 11 times [2020-10-12 18:32:58,949 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:32:58,950 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066270035] [2020-10-12 18:32:58,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:32:58,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:32:58,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:32:58,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:03,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:03,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-12 18:33:03,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:03,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:33:03,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:03,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:33:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-10-12 18:33:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:33:03,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:03,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:03,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:03,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:03,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:03,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:03,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:03,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:03,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:03,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:03,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:03,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:03,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:03,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:03,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:04,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:33:04,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-12 18:33:04,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:33:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:04,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:33:04,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:04,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-12 18:33:04,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:04,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:04,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:33:04,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:04,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-12 18:33:04,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:04,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:33:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:04,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:33:04,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:04,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-12 18:33:04,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:04,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:04,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-12 18:33:04,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:04,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-12 18:33:04,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-12 18:33:04,322 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:04,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-12 18:33:04,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:04,337 INFO L134 CoverageAnalysis]: Checked inductivity of 1170 backedges. 363 proven. 726 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-12 18:33:04,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066270035] [2020-10-12 18:33:04,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:04,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-12 18:33:04,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1732077130] [2020-10-12 18:33:04,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-12 18:33:04,338 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:04,338 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-12 18:33:04,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-12 18:33:04,339 INFO L87 Difference]: Start difference. First operand 47 states and 51 transitions. Second operand 15 states. [2020-10-12 18:33:04,687 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:04,687 INFO L93 Difference]: Finished difference Result 88 states and 98 transitions. [2020-10-12 18:33:04,688 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-12 18:33:04,688 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 98 [2020-10-12 18:33:04,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:04,689 INFO L225 Difference]: With dead ends: 88 [2020-10-12 18:33:04,690 INFO L226 Difference]: Without dead ends: 50 [2020-10-12 18:33:04,691 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=273, Invalid=429, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:33:04,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-12 18:33:04,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-12 18:33:04,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-12 18:33:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-12 18:33:04,697 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 98 [2020-10-12 18:33:04,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:04,697 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-12 18:33:04,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-12 18:33:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-12 18:33:04,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-12 18:33:04,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:04,698 INFO L422 BasicCegarLoop]: trace histogram [36, 36, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:04,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-12 18:33:04,699 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:04,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:04,699 INFO L82 PathProgramCache]: Analyzing trace with hash -1409867469, now seen corresponding path program 12 times [2020-10-12 18:33:04,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:04,700 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [246413580] [2020-10-12 18:33:04,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:04,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:04,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:09,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-12 18:33:09,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:09,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-12 18:33:09,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:33:09,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 49 [2020-10-12 18:33:09,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:33:09,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:09,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:09,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:09,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:09,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:09,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:09,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:09,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:09,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:09,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:09,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:09,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:09,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:33:09,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-12 18:33:09,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:33:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:09,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:33:09,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:09,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-12 18:33:09,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:09,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:10,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:10,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:33:10,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-12 18:33:10,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:33:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:10,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:33:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:10,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-12 18:33:10,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:10,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:10,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-12 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-12 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-12 18:33:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-12 18:33:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:10,194 INFO L134 CoverageAnalysis]: Checked inductivity of 1383 backedges. 432 proven. 864 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-12 18:33:10,194 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [246413580] [2020-10-12 18:33:10,194 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:10,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-12 18:33:10,195 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243236683] [2020-10-12 18:33:10,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-12 18:33:10,196 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:10,196 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-12 18:33:10,200 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-12 18:33:10,200 INFO L87 Difference]: Start difference. First operand 49 states and 53 transitions. Second operand 16 states. [2020-10-12 18:33:10,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:10,575 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2020-10-12 18:33:10,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-12 18:33:10,576 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 104 [2020-10-12 18:33:10,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:10,577 INFO L225 Difference]: With dead ends: 92 [2020-10-12 18:33:10,577 INFO L226 Difference]: Without dead ends: 52 [2020-10-12 18:33:10,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=315, Invalid=497, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:33:10,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-12 18:33:10,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 51. [2020-10-12 18:33:10,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-12 18:33:10,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 55 transitions. [2020-10-12 18:33:10,585 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 55 transitions. Word has length 104 [2020-10-12 18:33:10,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:10,585 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 55 transitions. [2020-10-12 18:33:10,585 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-12 18:33:10,585 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 55 transitions. [2020-10-12 18:33:10,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-12 18:33:10,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:10,587 INFO L422 BasicCegarLoop]: trace histogram [39, 39, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:10,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-12 18:33:10,587 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:10,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:10,587 INFO L82 PathProgramCache]: Analyzing trace with hash -1588860143, now seen corresponding path program 13 times [2020-10-12 18:33:10,588 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:10,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714850594] [2020-10-12 18:33:10,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:10,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:10,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:10,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:15,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:15,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 122 [2020-10-12 18:33:15,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:15,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:33:15,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:33:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 51 [2020-10-12 18:33:15,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:33:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:15,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:15,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:15,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:15,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:15,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:15,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:15,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:15,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:15,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:15,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:15,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:15,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:15,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:15,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:33:15,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:15,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 18:33:15,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:15,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:33:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:15,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:33:15,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:33:16,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-12 18:33:16,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:16,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:16,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:16,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:33:16,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:16,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 18:33:16,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:16,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:33:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:16,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:33:16,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:33:16,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-12 18:33:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:16,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:16,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:16,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:16,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 18:33:16,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:16,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-10-12 18:33:16,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:16,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-12 18:33:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-12 18:33:16,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:33:16,533 INFO L134 CoverageAnalysis]: Checked inductivity of 1614 backedges. 507 proven. 1014 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-12 18:33:16,535 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714850594] [2020-10-12 18:33:16,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:16,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-12 18:33:16,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635968099] [2020-10-12 18:33:16,537 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-12 18:33:16,537 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:16,537 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-12 18:33:16,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-12 18:33:16,538 INFO L87 Difference]: Start difference. First operand 51 states and 55 transitions. Second operand 17 states. [2020-10-12 18:33:17,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:17,013 INFO L93 Difference]: Finished difference Result 96 states and 106 transitions. [2020-10-12 18:33:17,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-12 18:33:17,013 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 110 [2020-10-12 18:33:17,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:17,014 INFO L225 Difference]: With dead ends: 96 [2020-10-12 18:33:17,015 INFO L226 Difference]: Without dead ends: 54 [2020-10-12 18:33:17,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=360, Invalid=570, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:33:17,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-12 18:33:17,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 53. [2020-10-12 18:33:17,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-12 18:33:17,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-10-12 18:33:17,026 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 110 [2020-10-12 18:33:17,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:17,028 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-10-12 18:33:17,028 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-12 18:33:17,028 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-10-12 18:33:17,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-12 18:33:17,029 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:17,029 INFO L422 BasicCegarLoop]: trace histogram [42, 42, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:17,030 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-12 18:33:17,030 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:17,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:17,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1229089169, now seen corresponding path program 14 times [2020-10-12 18:33:17,031 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:17,031 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [807464295] [2020-10-12 18:33:17,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:17,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:17,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:17,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:17,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:17,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:22,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-12 18:33:22,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-12 18:33:22,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:33:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 53 [2020-10-12 18:33:22,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:33:22,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:22,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:22,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:22,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:22,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:22,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:22,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:22,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:22,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:22,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:22,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:22,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:33:22,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:22,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-12 18:33:22,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:22,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:33:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:22,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:33:22,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:22,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-12 18:33:22,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:22,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:22,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:33:22,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:22,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-12 18:33:22,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:33:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:22,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:33:22,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:33:22,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-12 18:33:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:22,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:22,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:22,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-12 18:33:22,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:22,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-12 18:33:22,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:22,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-12 18:33:22,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:22,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-12 18:33:22,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:22,832 INFO L134 CoverageAnalysis]: Checked inductivity of 1863 backedges. 588 proven. 1176 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2020-10-12 18:33:22,832 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [807464295] [2020-10-12 18:33:22,832 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:22,833 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-12 18:33:22,833 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2763341] [2020-10-12 18:33:22,835 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-12 18:33:22,835 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:22,835 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-12 18:33:22,836 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-12 18:33:22,836 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 18 states. [2020-10-12 18:33:23,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:23,241 INFO L93 Difference]: Finished difference Result 100 states and 110 transitions. [2020-10-12 18:33:23,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-12 18:33:23,242 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 116 [2020-10-12 18:33:23,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:23,243 INFO L225 Difference]: With dead ends: 100 [2020-10-12 18:33:23,243 INFO L226 Difference]: Without dead ends: 56 [2020-10-12 18:33:23,244 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=408, Invalid=648, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:33:23,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-12 18:33:23,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 55. [2020-10-12 18:33:23,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-12 18:33:23,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-10-12 18:33:23,258 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 116 [2020-10-12 18:33:23,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:23,258 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-10-12 18:33:23,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-12 18:33:23,259 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-10-12 18:33:23,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-12 18:33:23,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:23,260 INFO L422 BasicCegarLoop]: trace histogram [45, 45, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:23,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-12 18:33:23,260 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:23,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:23,261 INFO L82 PathProgramCache]: Analyzing trace with hash -1543732403, now seen corresponding path program 15 times [2020-10-12 18:33:23,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:23,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1868925685] [2020-10-12 18:33:23,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:23,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:23,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:23,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:23,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:23,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:28,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-12 18:33:28,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:28,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-12 18:33:28,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:33:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 55 [2020-10-12 18:33:28,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:33:28,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:28,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:28,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:28,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:28,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:28,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:28,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:28,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:28,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:28,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:28,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:28,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:28,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:28,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:33:28,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:28,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-10-12 18:33:28,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:33:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:28,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:33:28,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 18:33:28,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-12 18:33:28,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:28,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:28,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:33:28,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:28,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 18:33:28,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:33:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:28,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:33:28,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:28,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-12 18:33:28,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:28,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:28,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:29,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:29,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-12 18:33:29,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:29,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 18:33:29,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-12 18:33:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:29,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-12 18:33:29,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:29,076 INFO L134 CoverageAnalysis]: Checked inductivity of 2130 backedges. 675 proven. 1350 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2020-10-12 18:33:29,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1868925685] [2020-10-12 18:33:29,076 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:29,077 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-12 18:33:29,077 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822153332] [2020-10-12 18:33:29,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-12 18:33:29,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:29,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-12 18:33:29,078 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-12 18:33:29,078 INFO L87 Difference]: Start difference. First operand 55 states and 59 transitions. Second operand 19 states. [2020-10-12 18:33:29,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:29,534 INFO L93 Difference]: Finished difference Result 104 states and 114 transitions. [2020-10-12 18:33:29,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-12 18:33:29,535 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 122 [2020-10-12 18:33:29,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:29,536 INFO L225 Difference]: With dead ends: 104 [2020-10-12 18:33:29,536 INFO L226 Difference]: Without dead ends: 58 [2020-10-12 18:33:29,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=459, Invalid=731, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:33:29,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-12 18:33:29,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 57. [2020-10-12 18:33:29,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-12 18:33:29,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-12 18:33:29,553 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 122 [2020-10-12 18:33:29,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:29,553 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-12 18:33:29,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-12 18:33:29,554 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-12 18:33:29,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-12 18:33:29,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:29,556 INFO L422 BasicCegarLoop]: trace histogram [48, 48, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:29,556 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-12 18:33:29,556 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:29,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:29,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1028723115, now seen corresponding path program 16 times [2020-10-12 18:33:29,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:29,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [526508365] [2020-10-12 18:33:29,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:29,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:29,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:29,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:34,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:34,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-10-12 18:33:34,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:34,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:33:34,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:34,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:33:34,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-10-12 18:33:34,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:33:34,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:34,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:34,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:34,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:34,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:34,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:34,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:34,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:34,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:34,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:34,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:34,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:34,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:34,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:34,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:34,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:34,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:33:34,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:34,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-12 18:33:34,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:33:34,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:34,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:33:34,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:34,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-12 18:33:34,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:34,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:35,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:35,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:33:35,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:35,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-12 18:33:35,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:33:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:35,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:33:35,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:35,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-12 18:33:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:35,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:35,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:35,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:35,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-12 18:33:35,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:35,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-12 18:33:35,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-12 18:33:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:35,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-12 18:33:35,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:35,189 INFO L134 CoverageAnalysis]: Checked inductivity of 2415 backedges. 768 proven. 1536 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-12 18:33:35,189 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [526508365] [2020-10-12 18:33:35,190 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:35,190 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-12 18:33:35,190 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17433114] [2020-10-12 18:33:35,190 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-12 18:33:35,190 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:35,191 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-12 18:33:35,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-12 18:33:35,191 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 20 states. [2020-10-12 18:33:35,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:35,669 INFO L93 Difference]: Finished difference Result 108 states and 118 transitions. [2020-10-12 18:33:35,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-12 18:33:35,670 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 128 [2020-10-12 18:33:35,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:35,670 INFO L225 Difference]: With dead ends: 108 [2020-10-12 18:33:35,671 INFO L226 Difference]: Without dead ends: 60 [2020-10-12 18:33:35,672 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=513, Invalid=819, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:33:35,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-12 18:33:35,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-12 18:33:35,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-12 18:33:35,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 63 transitions. [2020-10-12 18:33:35,678 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 63 transitions. Word has length 128 [2020-10-12 18:33:35,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:35,679 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 63 transitions. [2020-10-12 18:33:35,683 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-12 18:33:35,683 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 63 transitions. [2020-10-12 18:33:35,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-12 18:33:35,685 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:35,685 INFO L422 BasicCegarLoop]: trace histogram [51, 51, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:35,685 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-12 18:33:35,685 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:35,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:35,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1771807113, now seen corresponding path program 17 times [2020-10-12 18:33:35,686 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:35,687 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386557025] [2020-10-12 18:33:35,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:35,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:35,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:35,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:40,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:40,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-12 18:33:40,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:40,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-12 18:33:40,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:40,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:33:40,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:33:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:40,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:40,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:40,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:40,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:40,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:40,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:40,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:33:40,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:40,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:40,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:40,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:40,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:40,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:40,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:40,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:33:40,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:40,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-12 18:33:40,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:33:40,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:40,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:33:40,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:41,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-12 18:33:41,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:41,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:41,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:41,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:41,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:33:41,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:41,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 18:33:41,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:33:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:41,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:33:41,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:41,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-12 18:33:41,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:41,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:41,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:41,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-12 18:33:41,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:41,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-12 18:33:41,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-12 18:33:41,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:41,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-12 18:33:41,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:41,429 INFO L134 CoverageAnalysis]: Checked inductivity of 2718 backedges. 867 proven. 1734 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2020-10-12 18:33:41,429 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386557025] [2020-10-12 18:33:41,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:41,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-12 18:33:41,430 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53649209] [2020-10-12 18:33:41,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-12 18:33:41,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:41,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-12 18:33:41,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-12 18:33:41,432 INFO L87 Difference]: Start difference. First operand 59 states and 63 transitions. Second operand 21 states. [2020-10-12 18:33:42,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:42,002 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2020-10-12 18:33:42,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-12 18:33:42,002 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-10-12 18:33:42,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:42,004 INFO L225 Difference]: With dead ends: 112 [2020-10-12 18:33:42,004 INFO L226 Difference]: Without dead ends: 62 [2020-10-12 18:33:42,005 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=570, Invalid=912, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:33:42,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-12 18:33:42,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 61. [2020-10-12 18:33:42,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-10-12 18:33:42,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 65 transitions. [2020-10-12 18:33:42,011 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 65 transitions. Word has length 134 [2020-10-12 18:33:42,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:42,011 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 65 transitions. [2020-10-12 18:33:42,011 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-12 18:33:42,011 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 65 transitions. [2020-10-12 18:33:42,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-12 18:33:42,013 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:42,013 INFO L422 BasicCegarLoop]: trace histogram [54, 54, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:42,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-12 18:33:42,013 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:42,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:42,014 INFO L82 PathProgramCache]: Analyzing trace with hash -1739287833, now seen corresponding path program 18 times [2020-10-12 18:33:42,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:42,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [285601758] [2020-10-12 18:33:42,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:42,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:42,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:42,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:42,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:42,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:47,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-10-12 18:33:47,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-12 18:33:47,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:33:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:47,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:33:47,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:47,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:47,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:47,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:47,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:47,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:47,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:47,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:47,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:47,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:47,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:47,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:47,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:33:47,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:47,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-12 18:33:47,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:33:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:47,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:33:47,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:47,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-12 18:33:47,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:47,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:47,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:33:47,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:47,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 18:33:47,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:47,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:33:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:47,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:33:47,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:47,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-12 18:33:47,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:47,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:47,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:47,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-12 18:33:47,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:47,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-12 18:33:47,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-12 18:33:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:47,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-12 18:33:47,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:47,804 INFO L134 CoverageAnalysis]: Checked inductivity of 3039 backedges. 972 proven. 1944 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-12 18:33:47,805 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [285601758] [2020-10-12 18:33:47,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:47,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-12 18:33:47,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2032087137] [2020-10-12 18:33:47,806 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-12 18:33:47,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:47,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-12 18:33:47,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-12 18:33:47,807 INFO L87 Difference]: Start difference. First operand 61 states and 65 transitions. Second operand 22 states. [2020-10-12 18:33:48,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:48,356 INFO L93 Difference]: Finished difference Result 116 states and 126 transitions. [2020-10-12 18:33:48,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-12 18:33:48,357 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 140 [2020-10-12 18:33:48,357 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:48,358 INFO L225 Difference]: With dead ends: 116 [2020-10-12 18:33:48,358 INFO L226 Difference]: Without dead ends: 64 [2020-10-12 18:33:48,360 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=630, Invalid=1010, Unknown=0, NotChecked=0, Total=1640 [2020-10-12 18:33:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-12 18:33:48,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 63. [2020-10-12 18:33:48,369 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-12 18:33:48,370 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 67 transitions. [2020-10-12 18:33:48,370 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 67 transitions. Word has length 140 [2020-10-12 18:33:48,370 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:48,370 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 67 transitions. [2020-10-12 18:33:48,370 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-12 18:33:48,370 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 67 transitions. [2020-10-12 18:33:48,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-12 18:33:48,375 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:48,375 INFO L422 BasicCegarLoop]: trace histogram [57, 57, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:48,375 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-12 18:33:48,375 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:48,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:48,376 INFO L82 PathProgramCache]: Analyzing trace with hash -1215543867, now seen corresponding path program 19 times [2020-10-12 18:33:48,376 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:48,376 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [928419888] [2020-10-12 18:33:48,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:48,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:48,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:48,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:48,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:53,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:53,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-10-12 18:33:53,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-12 18:33:53,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:33:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:33:53,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:33:53,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:53,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:53,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:53,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:53,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:53,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:53,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:53,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:53,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:53,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:53,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:53,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:53,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:53,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:53,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:33:53,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:53,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-12 18:33:53,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:33:53,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:53,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:33:53,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:53,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-12 18:33:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:53,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:53,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:54,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:33:54,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-10-12 18:33:54,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:33:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:54,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:33:54,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:54,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-12 18:33:54,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:54,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-12 18:33:54,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:33:54,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-12 18:33:54,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-12 18:33:54,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:33:54,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-12 18:33:54,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 3378 backedges. 1083 proven. 2166 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2020-10-12 18:33:54,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [928419888] [2020-10-12 18:33:54,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:33:54,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-12 18:33:54,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6645219] [2020-10-12 18:33:54,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-12 18:33:54,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:33:54,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-12 18:33:54,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=273, Unknown=0, NotChecked=0, Total=506 [2020-10-12 18:33:54,292 INFO L87 Difference]: Start difference. First operand 63 states and 67 transitions. Second operand 23 states. [2020-10-12 18:33:54,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:33:54,889 INFO L93 Difference]: Finished difference Result 120 states and 130 transitions. [2020-10-12 18:33:54,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-12 18:33:54,890 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 146 [2020-10-12 18:33:54,890 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:33:54,891 INFO L225 Difference]: With dead ends: 120 [2020-10-12 18:33:54,891 INFO L226 Difference]: Without dead ends: 66 [2020-10-12 18:33:54,892 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=693, Invalid=1113, Unknown=0, NotChecked=0, Total=1806 [2020-10-12 18:33:54,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-12 18:33:54,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 65. [2020-10-12 18:33:54,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-12 18:33:54,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 69 transitions. [2020-10-12 18:33:54,898 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 69 transitions. Word has length 146 [2020-10-12 18:33:54,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:33:54,898 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 69 transitions. [2020-10-12 18:33:54,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-12 18:33:54,899 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 69 transitions. [2020-10-12 18:33:54,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-12 18:33:54,900 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:33:54,900 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:33:54,900 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-12 18:33:54,901 INFO L427 AbstractCegarLoop]: === Iteration 21 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:33:54,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:33:54,901 INFO L82 PathProgramCache]: Analyzing trace with hash -1444210141, now seen corresponding path program 20 times [2020-10-12 18:33:54,901 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:33:54,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097945111] [2020-10-12 18:33:54,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:33:54,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:54,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:54,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:59,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:59,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-12 18:33:59,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:33:59,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-12 18:33:59,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:59,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:33:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 65 [2020-10-12 18:33:59,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:33:59,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:59,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:33:59,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:59,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:33:59,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:33:59,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:33:59,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:33:59,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:33:59,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:33:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:33:59,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:33:59,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:33:59,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:33:59,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:33:59,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:33:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:00,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:00,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:34:00,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:00,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-12 18:34:00,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:34:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:00,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:34:00,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-12 18:34:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:00,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:00,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:00,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:34:00,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:00,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-12 18:34:00,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:34:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:00,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:34:00,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:00,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-12 18:34:00,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:00,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:00,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:00,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:00,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-12 18:34:00,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:00,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-12 18:34:00,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-12 18:34:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:00,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-12 18:34:00,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:00,926 INFO L134 CoverageAnalysis]: Checked inductivity of 3735 backedges. 1200 proven. 2400 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2020-10-12 18:34:00,926 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097945111] [2020-10-12 18:34:00,926 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:00,926 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-12 18:34:00,927 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922709583] [2020-10-12 18:34:00,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-12 18:34:00,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:00,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-12 18:34:00,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=255, Invalid=297, Unknown=0, NotChecked=0, Total=552 [2020-10-12 18:34:00,928 INFO L87 Difference]: Start difference. First operand 65 states and 69 transitions. Second operand 24 states. [2020-10-12 18:34:01,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:01,589 INFO L93 Difference]: Finished difference Result 124 states and 134 transitions. [2020-10-12 18:34:01,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-12 18:34:01,589 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 152 [2020-10-12 18:34:01,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:01,591 INFO L225 Difference]: With dead ends: 124 [2020-10-12 18:34:01,591 INFO L226 Difference]: Without dead ends: 68 [2020-10-12 18:34:01,592 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=759, Invalid=1221, Unknown=0, NotChecked=0, Total=1980 [2020-10-12 18:34:01,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-12 18:34:01,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 67. [2020-10-12 18:34:01,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-12 18:34:01,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 71 transitions. [2020-10-12 18:34:01,597 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 71 transitions. Word has length 152 [2020-10-12 18:34:01,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:01,598 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 71 transitions. [2020-10-12 18:34:01,598 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-12 18:34:01,598 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 71 transitions. [2020-10-12 18:34:01,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 159 [2020-10-12 18:34:01,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:01,600 INFO L422 BasicCegarLoop]: trace histogram [63, 63, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:01,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-12 18:34:01,600 INFO L427 AbstractCegarLoop]: === Iteration 22 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:01,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:01,600 INFO L82 PathProgramCache]: Analyzing trace with hash 1018261505, now seen corresponding path program 21 times [2020-10-12 18:34:01,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:01,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615990806] [2020-10-12 18:34:01,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:01,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:01,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:01,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:01,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:06,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:06,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 170 [2020-10-12 18:34:06,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:06,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-12 18:34:06,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:34:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:06,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:34:06,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:06,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:06,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:06,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:06,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:06,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:06,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:06,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:06,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:06,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:06,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:06,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:06,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:06,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:06,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:34:06,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:06,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-12 18:34:06,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:34:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:06,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:34:06,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:07,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-12 18:34:07,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:07,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:07,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:07,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:34:07,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 18:34:07,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:34:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:07,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:34:07,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:07,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-12 18:34:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:07,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:07,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:07,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:07,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-12 18:34:07,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:07,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-12 18:34:07,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-12 18:34:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:07,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-12 18:34:07,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:07,613 INFO L134 CoverageAnalysis]: Checked inductivity of 4110 backedges. 1323 proven. 2646 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2020-10-12 18:34:07,614 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615990806] [2020-10-12 18:34:07,614 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:07,614 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-12 18:34:07,614 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094440200] [2020-10-12 18:34:07,615 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-12 18:34:07,615 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:07,615 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-12 18:34:07,615 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=278, Invalid=322, Unknown=0, NotChecked=0, Total=600 [2020-10-12 18:34:07,616 INFO L87 Difference]: Start difference. First operand 67 states and 71 transitions. Second operand 25 states. [2020-10-12 18:34:08,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:08,325 INFO L93 Difference]: Finished difference Result 128 states and 138 transitions. [2020-10-12 18:34:08,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-12 18:34:08,329 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 158 [2020-10-12 18:34:08,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:08,330 INFO L225 Difference]: With dead ends: 128 [2020-10-12 18:34:08,330 INFO L226 Difference]: Without dead ends: 70 [2020-10-12 18:34:08,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=828, Invalid=1334, Unknown=0, NotChecked=0, Total=2162 [2020-10-12 18:34:08,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-10-12 18:34:08,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 69. [2020-10-12 18:34:08,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-12 18:34:08,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 73 transitions. [2020-10-12 18:34:08,345 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 73 transitions. Word has length 158 [2020-10-12 18:34:08,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:08,345 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 73 transitions. [2020-10-12 18:34:08,345 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-12 18:34:08,346 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 73 transitions. [2020-10-12 18:34:08,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-12 18:34:08,347 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:08,347 INFO L422 BasicCegarLoop]: trace histogram [66, 66, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:08,347 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-12 18:34:08,348 INFO L427 AbstractCegarLoop]: === Iteration 23 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:08,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:08,348 INFO L82 PathProgramCache]: Analyzing trace with hash -1648908449, now seen corresponding path program 22 times [2020-10-12 18:34:08,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:08,350 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [902248622] [2020-10-12 18:34:08,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:08,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:08,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:08,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:08,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:08,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:13,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:13,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-12 18:34:13,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:13,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-12 18:34:13,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:13,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:34:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:13,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:34:13,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:13,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:13,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:13,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:13,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:13,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:13,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:13,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:13,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:13,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:13,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:13,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:13,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:13,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:13,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:13,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:34:13,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-12 18:34:13,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:34:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:13,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:34:13,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:13,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-12 18:34:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:13,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:13,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:14,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:14,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:34:14,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:14,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-12 18:34:14,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:34:14,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:14,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:34:14,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:14,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-12 18:34:14,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:14,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:14,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:14,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:14,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-12 18:34:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-12 18:34:14,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-12 18:34:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-12 18:34:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:14,499 INFO L134 CoverageAnalysis]: Checked inductivity of 4503 backedges. 1452 proven. 2904 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2020-10-12 18:34:14,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [902248622] [2020-10-12 18:34:14,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:14,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-12 18:34:14,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303030485] [2020-10-12 18:34:14,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-12 18:34:14,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:14,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-12 18:34:14,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=302, Invalid=348, Unknown=0, NotChecked=0, Total=650 [2020-10-12 18:34:14,501 INFO L87 Difference]: Start difference. First operand 69 states and 73 transitions. Second operand 26 states. [2020-10-12 18:34:15,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:15,250 INFO L93 Difference]: Finished difference Result 132 states and 142 transitions. [2020-10-12 18:34:15,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-12 18:34:15,251 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 164 [2020-10-12 18:34:15,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:15,252 INFO L225 Difference]: With dead ends: 132 [2020-10-12 18:34:15,252 INFO L226 Difference]: Without dead ends: 72 [2020-10-12 18:34:15,255 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=900, Invalid=1452, Unknown=0, NotChecked=0, Total=2352 [2020-10-12 18:34:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-12 18:34:15,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 71. [2020-10-12 18:34:15,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-12 18:34:15,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2020-10-12 18:34:15,263 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 164 [2020-10-12 18:34:15,263 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:15,263 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2020-10-12 18:34:15,263 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-12 18:34:15,263 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2020-10-12 18:34:15,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-12 18:34:15,264 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:15,265 INFO L422 BasicCegarLoop]: trace histogram [69, 69, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:15,265 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-12 18:34:15,265 INFO L427 AbstractCegarLoop]: === Iteration 24 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:15,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:15,266 INFO L82 PathProgramCache]: Analyzing trace with hash 1366171709, now seen corresponding path program 23 times [2020-10-12 18:34:15,266 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:15,266 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [713569083] [2020-10-12 18:34:15,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:15,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:15,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:15,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:15,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:15,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:20,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:20,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-12 18:34:20,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-12 18:34:20,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:34:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:20,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:34:20,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:20,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:20,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:20,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:20,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:20,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:20,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:20,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:20,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:20,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:20,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:20,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:20,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:20,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:20,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:34:20,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:20,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-10-12 18:34:20,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:34:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:20,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:34:20,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:20,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-12 18:34:20,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:20,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:20,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:21,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:21,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:34:21,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:21,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-12 18:34:21,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:21,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:34:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:21,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:34:21,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:21,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-12 18:34:21,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:21,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:21,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:21,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:21,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-12 18:34:21,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:21,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 263 [2020-10-12 18:34:21,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-12 18:34:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:21,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-12 18:34:21,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:21,360 INFO L134 CoverageAnalysis]: Checked inductivity of 4914 backedges. 1587 proven. 3174 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-12 18:34:21,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [713569083] [2020-10-12 18:34:21,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:21,360 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-12 18:34:21,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122437901] [2020-10-12 18:34:21,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-12 18:34:21,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:21,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-12 18:34:21,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=327, Invalid=375, Unknown=0, NotChecked=0, Total=702 [2020-10-12 18:34:21,362 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 27 states. [2020-10-12 18:34:22,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:22,042 INFO L93 Difference]: Finished difference Result 136 states and 146 transitions. [2020-10-12 18:34:22,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-12 18:34:22,044 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 170 [2020-10-12 18:34:22,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:22,045 INFO L225 Difference]: With dead ends: 136 [2020-10-12 18:34:22,045 INFO L226 Difference]: Without dead ends: 74 [2020-10-12 18:34:22,047 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=975, Invalid=1575, Unknown=0, NotChecked=0, Total=2550 [2020-10-12 18:34:22,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-12 18:34:22,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2020-10-12 18:34:22,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-12 18:34:22,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2020-10-12 18:34:22,055 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 170 [2020-10-12 18:34:22,055 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:22,055 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2020-10-12 18:34:22,055 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-12 18:34:22,055 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2020-10-12 18:34:22,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-12 18:34:22,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:22,057 INFO L422 BasicCegarLoop]: trace histogram [72, 72, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:22,057 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-12 18:34:22,057 INFO L427 AbstractCegarLoop]: === Iteration 25 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:22,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:22,057 INFO L82 PathProgramCache]: Analyzing trace with hash -1461896549, now seen corresponding path program 24 times [2020-10-12 18:34:22,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:22,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986786080] [2020-10-12 18:34:22,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:22,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:22,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:22,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:22,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:22,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:27,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:27,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-10-12 18:34:27,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:27,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-12 18:34:27,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:34:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:27,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:34:27,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:27,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:27,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:27,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:27,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:27,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:27,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:34:27,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:27,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:27,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:27,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:27,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:27,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:27,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:27,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:27,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:34:27,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:27,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-12 18:34:27,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:34:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:27,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:34:27,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:27,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-12 18:34:27,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:27,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:27,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:27,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:27,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:34:27,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-12 18:34:27,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:34:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:34:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:27,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-12 18:34:27,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:28,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:28,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:28,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:28,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-12 18:34:28,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:28,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-12 18:34:28,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-12 18:34:28,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:28,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-12 18:34:28,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:28,274 INFO L134 CoverageAnalysis]: Checked inductivity of 5343 backedges. 1728 proven. 3456 refuted. 0 times theorem prover too weak. 159 trivial. 0 not checked. [2020-10-12 18:34:28,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986786080] [2020-10-12 18:34:28,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:28,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-12 18:34:28,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64921595] [2020-10-12 18:34:28,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-12 18:34:28,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:28,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-12 18:34:28,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=353, Invalid=403, Unknown=0, NotChecked=0, Total=756 [2020-10-12 18:34:28,277 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 28 states. [2020-10-12 18:34:29,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:29,125 INFO L93 Difference]: Finished difference Result 140 states and 150 transitions. [2020-10-12 18:34:29,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-12 18:34:29,125 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 176 [2020-10-12 18:34:29,126 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:29,127 INFO L225 Difference]: With dead ends: 140 [2020-10-12 18:34:29,127 INFO L226 Difference]: Without dead ends: 76 [2020-10-12 18:34:29,128 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1053, Invalid=1703, Unknown=0, NotChecked=0, Total=2756 [2020-10-12 18:34:29,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-12 18:34:29,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 75. [2020-10-12 18:34:29,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-12 18:34:29,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2020-10-12 18:34:29,133 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 176 [2020-10-12 18:34:29,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:29,134 INFO L479 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2020-10-12 18:34:29,134 INFO L480 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-12 18:34:29,134 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2020-10-12 18:34:29,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-12 18:34:29,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:29,135 INFO L422 BasicCegarLoop]: trace histogram [75, 75, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:29,136 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-12 18:34:29,136 INFO L427 AbstractCegarLoop]: === Iteration 26 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:29,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:29,136 INFO L82 PathProgramCache]: Analyzing trace with hash -1213901191, now seen corresponding path program 25 times [2020-10-12 18:34:29,136 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:29,136 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440403437] [2020-10-12 18:34:29,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:29,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:29,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:29,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:34,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:34,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-12 18:34:34,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:34,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-12 18:34:34,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:34,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:34:34,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:34,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:34:34,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:34,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:34,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:34,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:34,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:34,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:34,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:34,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:34,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:34,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:34,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:34,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:34,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:34,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:34:34,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:34,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-12 18:34:34,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:34:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:34,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:34:34,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:34,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-12 18:34:34,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:34,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:35,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:35,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:34:35,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-12 18:34:35,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:34:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:34:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:35,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-12 18:34:35,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:35,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:35,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:35,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:35,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-12 18:34:35,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-12 18:34:35,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-12 18:34:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-12 18:34:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:35,295 INFO L134 CoverageAnalysis]: Checked inductivity of 5790 backedges. 1875 proven. 3750 refuted. 0 times theorem prover too weak. 165 trivial. 0 not checked. [2020-10-12 18:34:35,296 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440403437] [2020-10-12 18:34:35,296 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:35,296 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-12 18:34:35,296 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1726161265] [2020-10-12 18:34:35,297 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-12 18:34:35,297 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:35,297 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-12 18:34:35,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=380, Invalid=432, Unknown=0, NotChecked=0, Total=812 [2020-10-12 18:34:35,297 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 29 states. [2020-10-12 18:34:36,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:36,121 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-10-12 18:34:36,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-12 18:34:36,121 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 182 [2020-10-12 18:34:36,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:36,122 INFO L225 Difference]: With dead ends: 144 [2020-10-12 18:34:36,123 INFO L226 Difference]: Without dead ends: 78 [2020-10-12 18:34:36,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 325 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1134, Invalid=1836, Unknown=0, NotChecked=0, Total=2970 [2020-10-12 18:34:36,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-12 18:34:36,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 77. [2020-10-12 18:34:36,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-12 18:34:36,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 81 transitions. [2020-10-12 18:34:36,129 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 81 transitions. Word has length 182 [2020-10-12 18:34:36,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:36,129 INFO L479 AbstractCegarLoop]: Abstraction has 77 states and 81 transitions. [2020-10-12 18:34:36,129 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-12 18:34:36,130 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 81 transitions. [2020-10-12 18:34:36,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2020-10-12 18:34:36,131 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:36,131 INFO L422 BasicCegarLoop]: trace histogram [78, 78, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:36,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-12 18:34:36,131 INFO L427 AbstractCegarLoop]: === Iteration 27 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:36,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:36,132 INFO L82 PathProgramCache]: Analyzing trace with hash -906046505, now seen corresponding path program 26 times [2020-10-12 18:34:36,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:36,132 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1503627709] [2020-10-12 18:34:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:36,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:36,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:36,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:36,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:41,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:41,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-12 18:34:41,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:41,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-12 18:34:41,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:34:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-10-12 18:34:41,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:34:41,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:41,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:41,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:41,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:41,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:41,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:41,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:41,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:41,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:41,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:41,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:41,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:41,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:41,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:41,485 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:34:41,485 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-12 18:34:41,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:34:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:41,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:34:41,486 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:41,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-12 18:34:41,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:41,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:42,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:42,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:34:42,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:42,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-12 18:34:42,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:42,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:34:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:42,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:34:42,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:42,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-12 18:34:42,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:42,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:42,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:42,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-12 18:34:42,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:42,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-12 18:34:42,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-12 18:34:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:42,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-12 18:34:42,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:42,539 INFO L134 CoverageAnalysis]: Checked inductivity of 6255 backedges. 2028 proven. 4056 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2020-10-12 18:34:42,539 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1503627709] [2020-10-12 18:34:42,539 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:42,540 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-12 18:34:42,540 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146746486] [2020-10-12 18:34:42,540 INFO L459 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-12 18:34:42,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:42,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-12 18:34:42,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=408, Invalid=462, Unknown=0, NotChecked=0, Total=870 [2020-10-12 18:34:42,541 INFO L87 Difference]: Start difference. First operand 77 states and 81 transitions. Second operand 30 states. [2020-10-12 18:34:43,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:43,734 INFO L93 Difference]: Finished difference Result 148 states and 158 transitions. [2020-10-12 18:34:43,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-12 18:34:43,735 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 188 [2020-10-12 18:34:43,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:43,736 INFO L225 Difference]: With dead ends: 148 [2020-10-12 18:34:43,736 INFO L226 Difference]: Without dead ends: 80 [2020-10-12 18:34:43,738 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 351 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1218, Invalid=1974, Unknown=0, NotChecked=0, Total=3192 [2020-10-12 18:34:43,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-12 18:34:43,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 79. [2020-10-12 18:34:43,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-12 18:34:43,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 83 transitions. [2020-10-12 18:34:43,744 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 83 transitions. Word has length 188 [2020-10-12 18:34:43,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:43,745 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 83 transitions. [2020-10-12 18:34:43,745 INFO L480 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-12 18:34:43,745 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 83 transitions. [2020-10-12 18:34:43,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-10-12 18:34:43,746 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:43,746 INFO L422 BasicCegarLoop]: trace histogram [81, 81, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:43,747 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-12 18:34:43,747 INFO L427 AbstractCegarLoop]: === Iteration 28 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:43,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:43,747 INFO L82 PathProgramCache]: Analyzing trace with hash 1522143925, now seen corresponding path program 27 times [2020-10-12 18:34:43,747 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:43,748 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1137163063] [2020-10-12 18:34:43,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:43,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:43,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:43,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:43,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:43,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:48,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:48,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-12 18:34:48,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-12 18:34:48,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:48,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:34:48,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:48,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:48,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:48,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:48,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:48,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:48,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-12 18:34:48,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:48,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:48,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:48,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:48,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:48,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:49,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:49,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:34:49,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:49,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-10-12 18:34:49,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:49,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:49,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:49,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:34:49,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:49,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-12 18:34:49,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:49,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:49,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:49,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:49,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:34:49,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:49,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 238 [2020-10-12 18:34:49,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:49,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:49,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:34:49,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:49,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-12 18:34:49,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:49,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:49,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:50,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:50,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-12 18:34:50,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-12 18:34:50,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-12 18:34:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-12 18:34:50,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:50,121 INFO L134 CoverageAnalysis]: Checked inductivity of 6738 backedges. 2187 proven. 4374 refuted. 0 times theorem prover too weak. 177 trivial. 0 not checked. [2020-10-12 18:34:50,122 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1137163063] [2020-10-12 18:34:50,122 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:50,122 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-12 18:34:50,122 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204063877] [2020-10-12 18:34:50,123 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-12 18:34:50,123 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:50,123 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-12 18:34:50,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=437, Invalid=493, Unknown=0, NotChecked=0, Total=930 [2020-10-12 18:34:50,124 INFO L87 Difference]: Start difference. First operand 79 states and 83 transitions. Second operand 31 states. [2020-10-12 18:34:51,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:51,012 INFO L93 Difference]: Finished difference Result 152 states and 162 transitions. [2020-10-12 18:34:51,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-12 18:34:51,012 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 194 [2020-10-12 18:34:51,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:51,013 INFO L225 Difference]: With dead ends: 152 [2020-10-12 18:34:51,013 INFO L226 Difference]: Without dead ends: 82 [2020-10-12 18:34:51,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 378 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1305, Invalid=2117, Unknown=0, NotChecked=0, Total=3422 [2020-10-12 18:34:51,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-12 18:34:51,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 81. [2020-10-12 18:34:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-10-12 18:34:51,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-10-12 18:34:51,022 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 194 [2020-10-12 18:34:51,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:51,023 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-10-12 18:34:51,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-12 18:34:51,023 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-10-12 18:34:51,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-12 18:34:51,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:51,026 INFO L422 BasicCegarLoop]: trace histogram [84, 84, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:51,026 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-12 18:34:51,026 INFO L427 AbstractCegarLoop]: === Iteration 29 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:51,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:51,026 INFO L82 PathProgramCache]: Analyzing trace with hash -1992330477, now seen corresponding path program 28 times [2020-10-12 18:34:51,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:51,027 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576846804] [2020-10-12 18:34:51,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:51,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:51,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:51,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-12 18:34:56,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:34:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-12 18:34:56,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:34:56,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:34:56,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:56,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:34:56,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:34:56,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:34:56,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:34:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:34:56,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:34:56,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:56,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:34:56,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:56,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:34:56,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:34:56,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-12 18:34:56,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:56,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:56,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:34:56,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:56,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-12 18:34:56,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:56,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:56,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:57,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:34:57,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-12 18:34:57,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:34:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:57,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-12 18:34:57,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:57,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:57,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:57,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:34:57,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 66 [2020-10-12 18:34:57,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:34:57,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 289 [2020-10-12 18:34:57,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:34:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-12 18:34:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:34:57,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-12 18:34:57,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:34:57,593 INFO L134 CoverageAnalysis]: Checked inductivity of 7239 backedges. 2352 proven. 4704 refuted. 0 times theorem prover too weak. 183 trivial. 0 not checked. [2020-10-12 18:34:57,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576846804] [2020-10-12 18:34:57,594 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:34:57,594 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-12 18:34:57,594 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317557124] [2020-10-12 18:34:57,594 INFO L459 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-12 18:34:57,594 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:34:57,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-12 18:34:57,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=467, Invalid=525, Unknown=0, NotChecked=0, Total=992 [2020-10-12 18:34:57,595 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 32 states. [2020-10-12 18:34:58,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:34:58,625 INFO L93 Difference]: Finished difference Result 156 states and 166 transitions. [2020-10-12 18:34:58,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-12 18:34:58,625 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 200 [2020-10-12 18:34:58,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:34:58,626 INFO L225 Difference]: With dead ends: 156 [2020-10-12 18:34:58,627 INFO L226 Difference]: Without dead ends: 84 [2020-10-12 18:34:58,628 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 406 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1395, Invalid=2265, Unknown=0, NotChecked=0, Total=3660 [2020-10-12 18:34:58,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-10-12 18:34:58,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 83. [2020-10-12 18:34:58,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-12 18:34:58,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 87 transitions. [2020-10-12 18:34:58,633 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 87 transitions. Word has length 200 [2020-10-12 18:34:58,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:34:58,634 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 87 transitions. [2020-10-12 18:34:58,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-12 18:34:58,634 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 87 transitions. [2020-10-12 18:34:58,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-12 18:34:58,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:34:58,636 INFO L422 BasicCegarLoop]: trace histogram [87, 87, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:34:58,636 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-12 18:34:58,636 INFO L427 AbstractCegarLoop]: === Iteration 30 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:34:58,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:34:58,636 INFO L82 PathProgramCache]: Analyzing trace with hash 261051633, now seen corresponding path program 29 times [2020-10-12 18:34:58,636 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:34:58,637 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [748033160] [2020-10-12 18:34:58,637 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:34:58,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:34:58,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:58,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:34:58,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:03,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:03,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 218 [2020-10-12 18:35:03,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:35:03,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-12 18:35:03,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:03,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:35:03,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-12 18:35:03,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:35:03,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:03,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:03,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:03,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:03,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:03,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:03,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:03,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:35:03,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:03,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:03,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:03,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:03,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:35:03,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:03,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:04,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:04,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:35:04,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-12 18:35:04,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:35:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:04,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:35:04,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:04,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-12 18:35:04,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:04,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:04,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:04,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:35:04,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:04,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 286 [2020-10-12 18:35:04,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:35:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:04,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:35:04,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:04,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-12 18:35:04,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:04,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:05,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:05,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-12 18:35:05,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:05,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-12 18:35:05,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-12 18:35:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:05,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-12 18:35:05,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:05,353 INFO L134 CoverageAnalysis]: Checked inductivity of 7758 backedges. 2523 proven. 5046 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-12 18:35:05,354 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [748033160] [2020-10-12 18:35:05,354 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:35:05,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33] total 33 [2020-10-12 18:35:05,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783932207] [2020-10-12 18:35:05,355 INFO L459 AbstractCegarLoop]: Interpolant automaton has 33 states [2020-10-12 18:35:05,355 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:05,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2020-10-12 18:35:05,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=498, Invalid=558, Unknown=0, NotChecked=0, Total=1056 [2020-10-12 18:35:05,356 INFO L87 Difference]: Start difference. First operand 83 states and 87 transitions. Second operand 33 states. [2020-10-12 18:35:06,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:06,362 INFO L93 Difference]: Finished difference Result 160 states and 170 transitions. [2020-10-12 18:35:06,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-10-12 18:35:06,363 INFO L78 Accepts]: Start accepts. Automaton has 33 states. Word has length 206 [2020-10-12 18:35:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:06,364 INFO L225 Difference]: With dead ends: 160 [2020-10-12 18:35:06,364 INFO L226 Difference]: Without dead ends: 86 [2020-10-12 18:35:06,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 435 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1488, Invalid=2418, Unknown=0, NotChecked=0, Total=3906 [2020-10-12 18:35:06,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-12 18:35:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-12 18:35:06,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-12 18:35:06,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-10-12 18:35:06,371 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 206 [2020-10-12 18:35:06,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:06,371 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-10-12 18:35:06,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 33 states. [2020-10-12 18:35:06,372 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-10-12 18:35:06,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 213 [2020-10-12 18:35:06,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:06,373 INFO L422 BasicCegarLoop]: trace histogram [90, 90, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:06,373 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-12 18:35:06,373 INFO L427 AbstractCegarLoop]: === Iteration 31 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:06,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:06,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1203627953, now seen corresponding path program 30 times [2020-10-12 18:35:06,374 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:06,374 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2083229662] [2020-10-12 18:35:06,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:06,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:06,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:06,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:06,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:06,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:11,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:11,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-12 18:35:11,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:35:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-12 18:35:11,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:35:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-12 18:35:11,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:35:11,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:11,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:11,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:11,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:11,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:11,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:35:11,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:11,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:11,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:11,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:35:11,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:11,858 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-12 18:35:11,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:35:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:11,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:35:11,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:12,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-12 18:35:12,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:12,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:12,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:12,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:35:12,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:12,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-10-12 18:35:12,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:35:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:12,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:35:12,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:12,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-12 18:35:12,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:12,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:13,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:13,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-12 18:35:13,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:13,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-10-12 18:35:13,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-12 18:35:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:13,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-12 18:35:13,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:13,275 INFO L134 CoverageAnalysis]: Checked inductivity of 8295 backedges. 2700 proven. 5400 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2020-10-12 18:35:13,275 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2083229662] [2020-10-12 18:35:13,275 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:35:13,275 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-12 18:35:13,275 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348632698] [2020-10-12 18:35:13,276 INFO L459 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-12 18:35:13,276 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:13,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-12 18:35:13,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=530, Invalid=592, Unknown=0, NotChecked=0, Total=1122 [2020-10-12 18:35:13,277 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 34 states. [2020-10-12 18:35:14,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:14,409 INFO L93 Difference]: Finished difference Result 164 states and 174 transitions. [2020-10-12 18:35:14,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-12 18:35:14,409 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 212 [2020-10-12 18:35:14,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:14,411 INFO L225 Difference]: With dead ends: 164 [2020-10-12 18:35:14,411 INFO L226 Difference]: Without dead ends: 88 [2020-10-12 18:35:14,413 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 71 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 465 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1584, Invalid=2576, Unknown=0, NotChecked=0, Total=4160 [2020-10-12 18:35:14,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-10-12 18:35:14,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 87. [2020-10-12 18:35:14,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-12 18:35:14,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2020-10-12 18:35:14,418 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 212 [2020-10-12 18:35:14,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:14,419 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2020-10-12 18:35:14,419 INFO L480 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-12 18:35:14,419 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2020-10-12 18:35:14,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-12 18:35:14,420 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:14,420 INFO L422 BasicCegarLoop]: trace histogram [93, 93, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:14,421 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-12 18:35:14,421 INFO L427 AbstractCegarLoop]: === Iteration 32 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:14,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:14,421 INFO L82 PathProgramCache]: Analyzing trace with hash 1418206509, now seen corresponding path program 31 times [2020-10-12 18:35:14,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:14,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564796966] [2020-10-12 18:35:14,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:14,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:14,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:14,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:14,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:19,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-12 18:35:19,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:35:19,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-12 18:35:19,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:19,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:35:19,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-12 18:35:19,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:35:19,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:19,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:19,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:19,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:19,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:19,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:19,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:35:19,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:19,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:19,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:35:19,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:19,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:19,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:19,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 18:35:19,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:19,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 312 [2020-10-12 18:35:19,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:35:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:19,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:35:19,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:20,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-12 18:35:20,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:20,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:20,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:20,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 18:35:20,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:20,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-10-12 18:35:20,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:20,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:35:20,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:20,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:35:20,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:20,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-12 18:35:20,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:20,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:20,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:21,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:21,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-12 18:35:21,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:21,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 323 [2020-10-12 18:35:21,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-12 18:35:21,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:21,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-12 18:35:21,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:21,178 INFO L134 CoverageAnalysis]: Checked inductivity of 8850 backedges. 2883 proven. 5766 refuted. 0 times theorem prover too weak. 201 trivial. 0 not checked. [2020-10-12 18:35:21,179 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564796966] [2020-10-12 18:35:21,179 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:35:21,179 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [35] total 35 [2020-10-12 18:35:21,179 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443060016] [2020-10-12 18:35:21,180 INFO L459 AbstractCegarLoop]: Interpolant automaton has 35 states [2020-10-12 18:35:21,180 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:21,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2020-10-12 18:35:21,181 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=563, Invalid=627, Unknown=0, NotChecked=0, Total=1190 [2020-10-12 18:35:21,181 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand 35 states. [2020-10-12 18:35:22,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:22,316 INFO L93 Difference]: Finished difference Result 168 states and 178 transitions. [2020-10-12 18:35:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-12 18:35:22,317 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 218 [2020-10-12 18:35:22,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:22,318 INFO L225 Difference]: With dead ends: 168 [2020-10-12 18:35:22,318 INFO L226 Difference]: Without dead ends: 90 [2020-10-12 18:35:22,320 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 496 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1683, Invalid=2739, Unknown=0, NotChecked=0, Total=4422 [2020-10-12 18:35:22,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-10-12 18:35:22,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 89. [2020-10-12 18:35:22,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2020-10-12 18:35:22,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2020-10-12 18:35:22,326 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 218 [2020-10-12 18:35:22,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:22,326 INFO L479 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2020-10-12 18:35:22,326 INFO L480 AbstractCegarLoop]: Interpolant automaton has 35 states. [2020-10-12 18:35:22,326 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2020-10-12 18:35:22,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-12 18:35:22,328 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:22,328 INFO L422 BasicCegarLoop]: trace histogram [96, 96, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:22,328 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-12 18:35:22,328 INFO L427 AbstractCegarLoop]: === Iteration 33 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:22,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:22,328 INFO L82 PathProgramCache]: Analyzing trace with hash 841597835, now seen corresponding path program 32 times [2020-10-12 18:35:22,329 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:22,329 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234657918] [2020-10-12 18:35:22,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:22,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:22,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:22,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:22,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:27,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:27,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-12 18:35:27,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:35:27,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5021 [2020-10-12 18:35:27,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:27,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:35:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 89 [2020-10-12 18:35:27,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:35:27,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:27,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:27,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:27,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:27,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:27,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:27,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:35:27,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:27,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:27,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:27,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:27,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:35:27,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:27,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:27,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:27,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:27,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:35:27,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-10-12 18:35:27,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:35:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:27,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:35:27,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:28,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-12 18:35:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:28,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:28,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:28,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:35:28,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 360 [2020-10-12 18:35:28,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:35:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:28,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:35:28,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:28,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-12 18:35:28,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:28,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:28,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:29,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:29,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-12 18:35:29,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:29,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 350 [2020-10-12 18:35:29,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-12 18:35:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:29,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-12 18:35:29,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:29,171 INFO L134 CoverageAnalysis]: Checked inductivity of 9423 backedges. 3072 proven. 6144 refuted. 0 times theorem prover too weak. 207 trivial. 0 not checked. [2020-10-12 18:35:29,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1234657918] [2020-10-12 18:35:29,172 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:35:29,172 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [36] total 36 [2020-10-12 18:35:29,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690695364] [2020-10-12 18:35:29,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 36 states [2020-10-12 18:35:29,173 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:29,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2020-10-12 18:35:29,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=597, Invalid=663, Unknown=0, NotChecked=0, Total=1260 [2020-10-12 18:35:29,174 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand 36 states. [2020-10-12 18:35:30,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:30,354 INFO L93 Difference]: Finished difference Result 172 states and 182 transitions. [2020-10-12 18:35:30,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-12 18:35:30,355 INFO L78 Accepts]: Start accepts. Automaton has 36 states. Word has length 224 [2020-10-12 18:35:30,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:30,356 INFO L225 Difference]: With dead ends: 172 [2020-10-12 18:35:30,356 INFO L226 Difference]: Without dead ends: 92 [2020-10-12 18:35:30,358 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 528 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1785, Invalid=2907, Unknown=0, NotChecked=0, Total=4692 [2020-10-12 18:35:30,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-12 18:35:30,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2020-10-12 18:35:30,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-12 18:35:30,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2020-10-12 18:35:30,362 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 224 [2020-10-12 18:35:30,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:30,362 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2020-10-12 18:35:30,362 INFO L480 AbstractCegarLoop]: Interpolant automaton has 36 states. [2020-10-12 18:35:30,363 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2020-10-12 18:35:30,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 231 [2020-10-12 18:35:30,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:30,364 INFO L422 BasicCegarLoop]: trace histogram [99, 99, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:30,364 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-12 18:35:30,364 INFO L427 AbstractCegarLoop]: === Iteration 34 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:30,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:30,364 INFO L82 PathProgramCache]: Analyzing trace with hash 294087529, now seen corresponding path program 33 times [2020-10-12 18:35:30,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:30,365 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [384871627] [2020-10-12 18:35:30,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:30,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:30,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:30,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:30,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:30,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 242 [2020-10-12 18:35:35,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:35:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-12 18:35:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:35:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:35:35,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:35:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:35,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:35,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:35,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:35,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:35:35,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:35,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:35,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:35,427 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:35,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:35:35,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:35,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:35,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:35,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:35:35,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:35,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-12 18:35:35,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:35:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:35,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:35:35,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:36,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-12 18:35:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:36,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:36,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:36,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:36,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:35:36,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:36,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-12 18:35:36,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:36,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:35:36,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:36,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:35:36,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:36,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-12 18:35:36,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:36,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:36,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:37,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:37,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-12 18:35:37,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:37,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 394 [2020-10-12 18:35:37,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-12 18:35:37,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:37,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-12 18:35:37,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:37,417 INFO L134 CoverageAnalysis]: Checked inductivity of 10014 backedges. 3267 proven. 6534 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2020-10-12 18:35:37,417 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [384871627] [2020-10-12 18:35:37,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:35:37,418 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [37] total 37 [2020-10-12 18:35:37,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [438603899] [2020-10-12 18:35:37,418 INFO L459 AbstractCegarLoop]: Interpolant automaton has 37 states [2020-10-12 18:35:37,418 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:37,418 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2020-10-12 18:35:37,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=632, Invalid=700, Unknown=0, NotChecked=0, Total=1332 [2020-10-12 18:35:37,419 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand 37 states. [2020-10-12 18:35:38,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:38,663 INFO L93 Difference]: Finished difference Result 176 states and 186 transitions. [2020-10-12 18:35:38,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-12 18:35:38,664 INFO L78 Accepts]: Start accepts. Automaton has 37 states. Word has length 230 [2020-10-12 18:35:38,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:38,665 INFO L225 Difference]: With dead ends: 176 [2020-10-12 18:35:38,665 INFO L226 Difference]: Without dead ends: 94 [2020-10-12 18:35:38,666 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 561 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=1890, Invalid=3080, Unknown=0, NotChecked=0, Total=4970 [2020-10-12 18:35:38,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-12 18:35:38,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 93. [2020-10-12 18:35:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-10-12 18:35:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2020-10-12 18:35:38,671 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 230 [2020-10-12 18:35:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:38,672 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2020-10-12 18:35:38,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 37 states. [2020-10-12 18:35:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2020-10-12 18:35:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-12 18:35:38,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:38,673 INFO L422 BasicCegarLoop]: trace histogram [102, 102, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:38,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-12 18:35:38,674 INFO L427 AbstractCegarLoop]: === Iteration 35 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:38,674 INFO L82 PathProgramCache]: Analyzing trace with hash -1684441913, now seen corresponding path program 34 times [2020-10-12 18:35:38,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:38,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [440233179] [2020-10-12 18:35:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:38,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:38,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:38,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:38,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:43,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:43,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-12 18:35:43,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:35:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-12 18:35:43,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 18:35:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-12 18:35:43,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:35:43,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:43,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:43,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:43,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:43,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:43,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:43,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:35:43,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:43,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:35:43,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:43,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:44,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:44,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 18:35:44,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:44,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-12 18:35:44,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 18:35:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:44,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:35:44,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:44,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-12 18:35:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:44,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:44,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:45,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:45,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 18:35:45,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-12 18:35:45,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 18:35:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:45,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:35:45,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:45,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-12 18:35:45,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:45,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:45,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-12 18:35:45,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 401 [2020-10-12 18:35:45,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-12 18:35:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:45,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-12 18:35:45,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:45,797 INFO L134 CoverageAnalysis]: Checked inductivity of 10623 backedges. 3468 proven. 6936 refuted. 0 times theorem prover too weak. 219 trivial. 0 not checked. [2020-10-12 18:35:45,797 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [440233179] [2020-10-12 18:35:45,797 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:35:45,797 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [38] total 38 [2020-10-12 18:35:45,798 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857144535] [2020-10-12 18:35:45,798 INFO L459 AbstractCegarLoop]: Interpolant automaton has 38 states [2020-10-12 18:35:45,798 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:45,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2020-10-12 18:35:45,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=668, Invalid=738, Unknown=0, NotChecked=0, Total=1406 [2020-10-12 18:35:45,799 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand 38 states. [2020-10-12 18:35:47,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 18:35:47,137 INFO L93 Difference]: Finished difference Result 180 states and 190 transitions. [2020-10-12 18:35:47,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-12 18:35:47,138 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 236 [2020-10-12 18:35:47,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 18:35:47,139 INFO L225 Difference]: With dead ends: 180 [2020-10-12 18:35:47,139 INFO L226 Difference]: Without dead ends: 96 [2020-10-12 18:35:47,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 150 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 595 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1998, Invalid=3258, Unknown=0, NotChecked=0, Total=5256 [2020-10-12 18:35:47,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-12 18:35:47,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 95. [2020-10-12 18:35:47,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-12 18:35:47,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2020-10-12 18:35:47,145 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 236 [2020-10-12 18:35:47,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 18:35:47,146 INFO L479 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2020-10-12 18:35:47,146 INFO L480 AbstractCegarLoop]: Interpolant automaton has 38 states. [2020-10-12 18:35:47,146 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2020-10-12 18:35:47,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 243 [2020-10-12 18:35:47,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 18:35:47,148 INFO L422 BasicCegarLoop]: trace histogram [105, 105, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 18:35:47,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-12 18:35:47,148 INFO L427 AbstractCegarLoop]: === Iteration 36 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 18:35:47,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 18:35:47,148 INFO L82 PathProgramCache]: Analyzing trace with hash 1475362725, now seen corresponding path program 35 times [2020-10-12 18:35:47,149 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 18:35:47,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901596569] [2020-10-12 18:35:47,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 18:35:47,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:47,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:47,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:47,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:47,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:52,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:52,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 254 [2020-10-12 18:35:52,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-12 18:35:52,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-12 18:35:52,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:35:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-12 18:35:52,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 18:35:52,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:52,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 18:35:52,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:52,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:52,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:52,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 18:35:52,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:52,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-12 18:35:52,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 18:35:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 18:35:52,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 18:35:52,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:52,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 18:35:52,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:52,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:52,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:52,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:52,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:35:52,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:52,630 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 422 [2020-10-12 18:35:52,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:35:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:52,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 18:35:52,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:53,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-12 18:35:53,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:53,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:53,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:35:53,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 18:35:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 470 [2020-10-12 18:35:53,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:35:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:53,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 18:35:53,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:53,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2020-10-12 18:35:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 18:35:53,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:53,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 18:35:54,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 18:35:54,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-12 18:35:54,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 18:35:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-10-12 18:35:54,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 18:35:54,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-12 18:35:54,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-12 18:35:54,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-12 18:35:54,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 18:35:54,433 INFO L134 CoverageAnalysis]: Checked inductivity of 11250 backedges. 3675 proven. 7350 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2020-10-12 18:35:54,433 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901596569] [2020-10-12 18:35:54,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 18:35:54,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2020-10-12 18:35:54,433 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843218465] [2020-10-12 18:35:54,434 INFO L459 AbstractCegarLoop]: Interpolant automaton has 39 states [2020-10-12 18:35:54,434 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 18:35:54,434 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2020-10-12 18:35:54,434 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=705, Invalid=777, Unknown=0, NotChecked=0, Total=1482 [2020-10-12 18:35:54,434 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand 39 states.