/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_notd2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:56:03,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:56:03,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:56:03,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:56:03,162 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:56:03,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:56:03,165 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:56:03,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:56:03,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:56:03,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:56:03,173 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:56:03,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:56:03,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:56:03,176 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:56:03,178 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:56:03,179 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:56:03,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:56:03,181 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:56:03,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:56:03,186 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:56:03,188 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:56:03,190 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:56:03,192 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:56:03,193 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:56:03,231 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:56:03,232 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:56:03,232 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:56:03,234 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:56:03,236 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:56:03,237 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:56:03,238 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:56:03,239 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:56:03,242 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:56:03,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:56:03,245 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:56:03,245 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:56:03,246 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:56:03,246 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:56:03,247 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:56:03,248 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:56:03,250 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:56:03,251 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 [2020-10-29 09:56:03,304 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:56:03,305 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:56:03,306 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:56:03,307 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:56:03,307 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:56:03,307 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:56:03,308 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:56:03,308 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:56:03,308 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:56:03,308 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:56:03,309 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:56:03,309 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:56:03,309 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:56:03,309 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:56:03,310 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:56:03,310 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:56:03,310 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:56:03,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:56:03,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:56:03,311 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:56:03,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:56:03,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:56:03,312 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:56:03,312 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:56:03,312 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:56:03,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:56:03,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:56:03,313 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:56:03,313 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:56:03,314 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:56:03,685 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:56:03,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:56:03,722 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:56:03,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:56:03,724 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:56:03,726 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops-crafted-1/nested_delay_notd2.c [2020-10-29 09:56:03,814 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e351ecdb2/ffc54a213f814a3f97a6bcf21e6bbfcd/FLAGccb6d2e48 [2020-10-29 09:56:04,380 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:56:04,381 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops-crafted-1/nested_delay_notd2.c [2020-10-29 09:56:04,388 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e351ecdb2/ffc54a213f814a3f97a6bcf21e6bbfcd/FLAGccb6d2e48 [2020-10-29 09:56:04,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e351ecdb2/ffc54a213f814a3f97a6bcf21e6bbfcd [2020-10-29 09:56:04,778 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:56:04,787 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:56:04,789 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:56:04,790 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:56:04,794 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:56:04,795 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:56:04" (1/1) ... [2020-10-29 09:56:04,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50b3267a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:04, skipping insertion in model container [2020-10-29 09:56:04,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:56:04" (1/1) ... [2020-10-29 09:56:04,812 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:56:04,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:56:05,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:56:05,087 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:56:05,114 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:56:05,130 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:56:05,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05 WrapperNode [2020-10-29 09:56:05,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:56:05,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:56:05,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:56:05,132 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:56:05,144 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05" (1/1) ... [2020-10-29 09:56:05,144 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05" (1/1) ... [2020-10-29 09:56:05,152 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05" (1/1) ... [2020-10-29 09:56:05,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05" (1/1) ... [2020-10-29 09:56:05,158 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05" (1/1) ... [2020-10-29 09:56:05,163 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05" (1/1) ... [2020-10-29 09:56:05,165 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05" (1/1) ... [2020-10-29 09:56:05,167 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:56:05,168 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:56:05,168 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:56:05,168 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:56:05,169 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05" (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 [2020-10-29 09:56:05,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:56:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:56:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:56:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 09:56:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:56:05,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:56:05,252 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:56:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:56:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:56:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:56:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 09:56:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 09:56:05,253 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:56:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:56:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:56:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:56:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:56:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:56:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:56:05,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:56:05,627 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:56:05,630 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 09:56:05,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:56:05 BoogieIcfgContainer [2020-10-29 09:56:05,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:56:05,634 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:56:05,634 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:56:05,645 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:56:05,645 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:56:04" (1/3) ... [2020-10-29 09:56:05,646 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d1e6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:56:05, skipping insertion in model container [2020-10-29 09:56:05,647 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:56:05" (2/3) ... [2020-10-29 09:56:05,649 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41d1e6db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:56:05, skipping insertion in model container [2020-10-29 09:56:05,649 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:56:05" (3/3) ... [2020-10-29 09:56:05,651 INFO L111 eAbstractionObserver]: Analyzing ICFG nested_delay_notd2.c [2020-10-29 09:56:05,676 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:56:05,681 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:56:05,696 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:56:05,726 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:56:05,726 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:56:05,726 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:56:05,726 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:56:05,726 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:56:05,727 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:56:05,727 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:56:05,727 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:56:05,745 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-29 09:56:05,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:56:05,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:05,753 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:05,754 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:05,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:05,761 INFO L82 PathProgramCache]: Analyzing trace with hash -1391196817, now seen corresponding path program 1 times [2020-10-29 09:56:05,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:05,771 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1149077518] [2020-10-29 09:56:05,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:05,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:05,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:06,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:06,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:06,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:06,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:06,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:06,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:06,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:56:06,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:56:06,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 946 [2020-10-29 09:56:06,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:06,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:06,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:56:06,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:06,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:56:06,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:56:06,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:06,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:07,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:07,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:07,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:56:07,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:07,003 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:07,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:07,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:07,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:07,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:07,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:56:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:56:07,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:07,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:07,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:07,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:07,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:07,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1149077518] [2020-10-29 09:56:07,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:56:07,050 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:56:07,051 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888098240] [2020-10-29 09:56:07,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:56:07,056 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:07,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:56:07,071 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:56:07,073 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 5 states. [2020-10-29 09:56:07,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:07,302 INFO L93 Difference]: Finished difference Result 64 states and 97 transitions. [2020-10-29 09:56:07,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:56:07,304 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 09:56:07,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:07,313 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:56:07,314 INFO L226 Difference]: Without dead ends: 37 [2020-10-29 09:56:07,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:56:07,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-29 09:56:07,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-10-29 09:56:07,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 09:56:07,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2020-10-29 09:56:07,366 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 49 transitions. Word has length 22 [2020-10-29 09:56:07,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:07,366 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 49 transitions. [2020-10-29 09:56:07,366 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:56:07,366 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 49 transitions. [2020-10-29 09:56:07,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 09:56:07,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:07,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:07,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:56:07,369 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:07,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:07,370 INFO L82 PathProgramCache]: Analyzing trace with hash 357074144, now seen corresponding path program 1 times [2020-10-29 09:56:07,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:07,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768469355] [2020-10-29 09:56:07,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:07,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 09:56:07,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 09:56:07,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-29 09:56:07,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:07,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:07,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 09:56:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:07,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:56:07,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:07,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:07,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:07,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:07,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:07,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:07,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 09:56:07,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:07,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:56:07,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:07,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:07,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:07,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:07,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 09:56:07,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:07,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:07,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:07,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:07,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768469355] [2020-10-29 09:56:07,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:56:07,659 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 09:56:07,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235862302] [2020-10-29 09:56:07,663 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 09:56:07,663 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:07,665 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 09:56:07,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 09:56:07,666 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 5 states. [2020-10-29 09:56:07,889 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:07,890 INFO L93 Difference]: Finished difference Result 69 states and 97 transitions. [2020-10-29 09:56:07,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:56:07,892 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-29 09:56:07,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:07,894 INFO L225 Difference]: With dead ends: 69 [2020-10-29 09:56:07,894 INFO L226 Difference]: Without dead ends: 44 [2020-10-29 09:56:07,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:56:07,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-29 09:56:07,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-29 09:56:07,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 09:56:07,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 51 transitions. [2020-10-29 09:56:07,919 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 51 transitions. Word has length 22 [2020-10-29 09:56:07,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:07,919 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 51 transitions. [2020-10-29 09:56:07,919 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 09:56:07,920 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 51 transitions. [2020-10-29 09:56:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 09:56:07,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:07,921 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:07,921 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:56:07,922 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:07,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:07,922 INFO L82 PathProgramCache]: Analyzing trace with hash 513104896, now seen corresponding path program 1 times [2020-10-29 09:56:07,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:07,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [266210646] [2020-10-29 09:56:07,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:07,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:07,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:07,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:08,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:08,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:08,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:08,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:08,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:09,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 09:56:09,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:56:09,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1171 [2020-10-29 09:56:09,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:09,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:56:09,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:09,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 09:56:09,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:09,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:09,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:09,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:09,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:09,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:09,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:56:09,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:09,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:09,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:09,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:09,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:09,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:09,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:09,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:09,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:09,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:09,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:09,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:56:09,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:09,208 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:09,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:09,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:09,212 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:09,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [266210646] [2020-10-29 09:56:09,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:09,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 09:56:09,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113976824] [2020-10-29 09:56:09,214 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:56:09,214 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:09,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:56:09,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:56:09,215 INFO L87 Difference]: Start difference. First operand 39 states and 51 transitions. Second operand 6 states. [2020-10-29 09:56:09,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:09,407 INFO L93 Difference]: Finished difference Result 77 states and 107 transitions. [2020-10-29 09:56:09,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:56:09,407 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-29 09:56:09,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:09,409 INFO L225 Difference]: With dead ends: 77 [2020-10-29 09:56:09,409 INFO L226 Difference]: Without dead ends: 50 [2020-10-29 09:56:09,410 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:56:09,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-29 09:56:09,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 45. [2020-10-29 09:56:09,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-29 09:56:09,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2020-10-29 09:56:09,421 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 59 transitions. Word has length 25 [2020-10-29 09:56:09,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:09,421 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 59 transitions. [2020-10-29 09:56:09,421 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:56:09,422 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 59 transitions. [2020-10-29 09:56:09,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 09:56:09,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:09,423 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:09,423 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:56:09,423 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:09,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:09,424 INFO L82 PathProgramCache]: Analyzing trace with hash 1670623456, now seen corresponding path program 2 times [2020-10-29 09:56:09,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:09,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1500759343] [2020-10-29 09:56:09,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:09,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:09,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:10,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:10,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:12,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:12,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 09:56:12,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 09:56:12,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3151 [2020-10-29 09:56:12,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:12,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:56:12,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:12,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-29 09:56:12,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:12,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:12,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:12,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:12,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:12,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:12,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:12,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:56:12,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:12,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:12,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:12,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:12,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:12,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:12,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:12,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:12,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:12,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:12,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:12,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:12,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:12,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:12,708 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:56:12,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1500759343] [2020-10-29 09:56:12,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:12,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:56:12,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039468699] [2020-10-29 09:56:12,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:56:12,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:12,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:56:12,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:56:12,712 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 7 states. [2020-10-29 09:56:13,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:13,080 INFO L93 Difference]: Finished difference Result 114 states and 156 transitions. [2020-10-29 09:56:13,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:56:13,081 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-29 09:56:13,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:13,083 INFO L225 Difference]: With dead ends: 114 [2020-10-29 09:56:13,083 INFO L226 Difference]: Without dead ends: 81 [2020-10-29 09:56:13,084 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:56:13,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-29 09:56:13,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 75. [2020-10-29 09:56:13,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2020-10-29 09:56:13,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 98 transitions. [2020-10-29 09:56:13,100 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 98 transitions. Word has length 28 [2020-10-29 09:56:13,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:13,100 INFO L481 AbstractCegarLoop]: Abstraction has 75 states and 98 transitions. [2020-10-29 09:56:13,100 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:56:13,101 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 98 transitions. [2020-10-29 09:56:13,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-29 09:56:13,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:13,103 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:13,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:56:13,103 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:13,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:13,104 INFO L82 PathProgramCache]: Analyzing trace with hash 659506206, now seen corresponding path program 1 times [2020-10-29 09:56:13,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:13,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [615239774] [2020-10-29 09:56:13,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:13,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:13,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:13,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 09:56:13,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:56:13,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-29 09:56:13,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:13,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:56:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:13,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 09:56:13,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:56:13,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:13,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:13,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:13,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:13,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:13,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:56:13,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:13,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:13,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:13,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:13,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:56:13,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:13,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:13,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:13,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:13,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:13,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:13,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:13,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:13,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:13,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:13,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:13,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:13,689 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:13,690 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [615239774] [2020-10-29 09:56:13,690 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:13,690 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:56:13,690 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962966595] [2020-10-29 09:56:13,691 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:56:13,691 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:13,692 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:56:13,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:56:13,693 INFO L87 Difference]: Start difference. First operand 75 states and 98 transitions. Second operand 7 states. [2020-10-29 09:56:13,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:13,925 INFO L93 Difference]: Finished difference Result 159 states and 217 transitions. [2020-10-29 09:56:13,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:56:13,926 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-29 09:56:13,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:13,927 INFO L225 Difference]: With dead ends: 159 [2020-10-29 09:56:13,927 INFO L226 Difference]: Without dead ends: 96 [2020-10-29 09:56:13,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:56:13,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2020-10-29 09:56:13,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 87. [2020-10-29 09:56:13,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 09:56:13,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2020-10-29 09:56:13,942 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 28 [2020-10-29 09:56:13,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:13,943 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2020-10-29 09:56:13,943 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:56:13,943 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2020-10-29 09:56:13,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:56:13,944 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:13,944 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:13,944 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:56:13,945 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:13,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:13,945 INFO L82 PathProgramCache]: Analyzing trace with hash -574723070, now seen corresponding path program 2 times [2020-10-29 09:56:13,945 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:13,946 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [294106296] [2020-10-29 09:56:13,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:13,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:13,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:14,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:14,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:14,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:14,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:14,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:14,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:14,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:14,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:15,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:15,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:15,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:56:15,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:56:15,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1695 [2020-10-29 09:56:15,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:15,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:56:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:15,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:56:15,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:15,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:15,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:15,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:15,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:15,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:15,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:56:15,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:15,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:15,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:15,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:15,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:15,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:15,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:15,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:15,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:15,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:15,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:56:15,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:15,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:15,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:15,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:15,755 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:15,759 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:56:15,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [294106296] [2020-10-29 09:56:15,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:15,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:56:15,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966984590] [2020-10-29 09:56:15,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:56:15,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:15,762 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:56:15,762 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:56:15,762 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand 8 states. [2020-10-29 09:56:16,144 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:16,145 INFO L93 Difference]: Finished difference Result 226 states and 304 transitions. [2020-10-29 09:56:16,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:56:16,145 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-29 09:56:16,146 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:16,147 INFO L225 Difference]: With dead ends: 226 [2020-10-29 09:56:16,147 INFO L226 Difference]: Without dead ends: 151 [2020-10-29 09:56:16,148 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:56:16,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-29 09:56:16,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 87. [2020-10-29 09:56:16,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-29 09:56:16,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 114 transitions. [2020-10-29 09:56:16,163 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 114 transitions. Word has length 31 [2020-10-29 09:56:16,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:16,163 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 114 transitions. [2020-10-29 09:56:16,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:56:16,163 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 114 transitions. [2020-10-29 09:56:16,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:56:16,164 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:16,164 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:16,165 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 09:56:16,165 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:16,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:16,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1585840320, now seen corresponding path program 3 times [2020-10-29 09:56:16,166 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:16,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2044958757] [2020-10-29 09:56:16,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:16,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:16,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:16,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:16,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:16,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:16,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:16,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:16,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:56:16,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:56:16,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 517 [2020-10-29 09:56:16,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:16,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:56:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:16,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 09:56:16,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:16,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:16,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:16,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:16,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:16,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:16,805 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:16,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:56:16,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:16,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:16,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:16,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:16,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:16,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:16,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:16,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:16,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:16,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:56:16,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:16,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:16,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:16,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:16,823 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:16,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2044958757] [2020-10-29 09:56:16,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:16,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:56:16,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671607077] [2020-10-29 09:56:16,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:56:16,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:16,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:56:16,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:56:16,826 INFO L87 Difference]: Start difference. First operand 87 states and 114 transitions. Second operand 8 states. [2020-10-29 09:56:17,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:17,061 INFO L93 Difference]: Finished difference Result 193 states and 259 transitions. [2020-10-29 09:56:17,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:56:17,062 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 31 [2020-10-29 09:56:17,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:17,063 INFO L225 Difference]: With dead ends: 193 [2020-10-29 09:56:17,063 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 09:56:17,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:56:17,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 09:56:17,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 99. [2020-10-29 09:56:17,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 99 states. [2020-10-29 09:56:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 130 transitions. [2020-10-29 09:56:17,077 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 130 transitions. Word has length 31 [2020-10-29 09:56:17,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:17,077 INFO L481 AbstractCegarLoop]: Abstraction has 99 states and 130 transitions. [2020-10-29 09:56:17,077 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:56:17,077 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 130 transitions. [2020-10-29 09:56:17,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-29 09:56:17,079 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:17,079 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:17,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 09:56:17,079 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:17,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:17,080 INFO L82 PathProgramCache]: Analyzing trace with hash -1872411232, now seen corresponding path program 4 times [2020-10-29 09:56:17,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:17,080 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2046484971] [2020-10-29 09:56:17,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:17,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:17,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:17,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:18,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:18,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-29 09:56:18,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:56:18,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1536 [2020-10-29 09:56:18,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:18,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:56:18,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:18,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 09:56:18,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:18,714 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:18,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:18,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:18,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:18,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:18,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:18,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:56:18,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:18,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:18,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:18,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:18,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:18,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:18,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:18,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:18,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:56:18,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:18,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:18,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:18,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:18,755 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:18,755 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2046484971] [2020-10-29 09:56:18,756 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:18,756 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:56:18,756 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755784102] [2020-10-29 09:56:18,756 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:56:18,757 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:18,757 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:56:18,758 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:56:18,758 INFO L87 Difference]: Start difference. First operand 99 states and 130 transitions. Second operand 9 states. [2020-10-29 09:56:18,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:18,972 INFO L93 Difference]: Finished difference Result 217 states and 291 transitions. [2020-10-29 09:56:18,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:56:18,973 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-10-29 09:56:18,974 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:18,975 INFO L225 Difference]: With dead ends: 217 [2020-10-29 09:56:18,975 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 09:56:18,979 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:56:18,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 09:56:19,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 111. [2020-10-29 09:56:19,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 09:56:19,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 146 transitions. [2020-10-29 09:56:19,005 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 146 transitions. Word has length 34 [2020-10-29 09:56:19,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:19,006 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 146 transitions. [2020-10-29 09:56:19,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:56:19,006 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 146 transitions. [2020-10-29 09:56:19,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:56:19,016 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:19,017 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:19,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 09:56:19,017 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:19,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:19,018 INFO L82 PathProgramCache]: Analyzing trace with hash -711466176, now seen corresponding path program 5 times [2020-10-29 09:56:19,018 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:19,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2110190931] [2020-10-29 09:56:19,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:19,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:19,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:19,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:20,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:20,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:20,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:20,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:20,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:20,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:20,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:23,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:23,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:56:23,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-29 09:56:23,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4597 [2020-10-29 09:56:23,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:23,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:56:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:23,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 09:56:23,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:23,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:23,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:23,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:23,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:23,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:23,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 09:56:23,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:23,801 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:23,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:23,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:23,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:23,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:23,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:23,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:23,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:23,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:23,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:23,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:23,812 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:23,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:23,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:23,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:23,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:23,819 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:56:23,819 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2110190931] [2020-10-29 09:56:23,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:23,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:56:23,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946356598] [2020-10-29 09:56:23,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:56:23,826 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:23,826 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:56:23,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:56:23,828 INFO L87 Difference]: Start difference. First operand 111 states and 146 transitions. Second operand 9 states. [2020-10-29 09:56:24,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:24,314 INFO L93 Difference]: Finished difference Result 298 states and 398 transitions. [2020-10-29 09:56:24,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:56:24,315 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 37 [2020-10-29 09:56:24,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:24,316 INFO L225 Difference]: With dead ends: 298 [2020-10-29 09:56:24,316 INFO L226 Difference]: Without dead ends: 199 [2020-10-29 09:56:24,317 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=87, Invalid=255, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:56:24,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 199 states. [2020-10-29 09:56:24,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 199 to 111. [2020-10-29 09:56:24,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 09:56:24,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 146 transitions. [2020-10-29 09:56:24,330 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 146 transitions. Word has length 37 [2020-10-29 09:56:24,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:24,330 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 146 transitions. [2020-10-29 09:56:24,330 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:56:24,331 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 146 transitions. [2020-10-29 09:56:24,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:56:24,331 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:24,332 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:24,332 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 09:56:24,332 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:24,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:24,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1995153218, now seen corresponding path program 6 times [2020-10-29 09:56:24,333 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:24,333 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962008883] [2020-10-29 09:56:24,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:24,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:24,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:24,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:25,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:25,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:25,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:56:25,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:56:25,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1609 [2020-10-29 09:56:25,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:25,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:56:25,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:25,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 09:56:25,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:26,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:26,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:26,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:26,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:26,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:26,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:26,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:56:26,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:26,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:26,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:26,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:26,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:26,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:26,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:26,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:26,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:26,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:26,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:26,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:26,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:26,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:26,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:26,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:26,095 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:56:26,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962008883] [2020-10-29 09:56:26,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:26,095 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:56:26,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363469003] [2020-10-29 09:56:26,096 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:56:26,096 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:26,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:56:26,097 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:56:26,097 INFO L87 Difference]: Start difference. First operand 111 states and 146 transitions. Second operand 10 states. [2020-10-29 09:56:26,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:26,623 INFO L93 Difference]: Finished difference Result 282 states and 378 transitions. [2020-10-29 09:56:26,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:56:26,624 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-29 09:56:26,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:26,625 INFO L225 Difference]: With dead ends: 282 [2020-10-29 09:56:26,625 INFO L226 Difference]: Without dead ends: 183 [2020-10-29 09:56:26,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=118, Invalid=344, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:56:26,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-29 09:56:26,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 111. [2020-10-29 09:56:26,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 09:56:26,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 146 transitions. [2020-10-29 09:56:26,640 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 146 transitions. Word has length 37 [2020-10-29 09:56:26,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:26,640 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 146 transitions. [2020-10-29 09:56:26,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:56:26,640 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 146 transitions. [2020-10-29 09:56:26,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-29 09:56:26,641 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:26,641 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:26,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 09:56:26,641 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:26,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:26,642 INFO L82 PathProgramCache]: Analyzing trace with hash 984035968, now seen corresponding path program 7 times [2020-10-29 09:56:26,642 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:26,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1400277151] [2020-10-29 09:56:26,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:26,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:26,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:26,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:26,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:26,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:27,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:27,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-29 09:56:27,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:56:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 552 [2020-10-29 09:56:27,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:27,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:56:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:27,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 09:56:27,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:27,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:27,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:27,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:27,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:27,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:27,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:27,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:56:27,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:27,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:27,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:27,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:27,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:27,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:27,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:27,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:27,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:27,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:27,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:27,337 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:27,338 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1400277151] [2020-10-29 09:56:27,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:27,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:56:27,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [366403817] [2020-10-29 09:56:27,339 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:56:27,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:27,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:56:27,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:56:27,340 INFO L87 Difference]: Start difference. First operand 111 states and 146 transitions. Second operand 10 states. [2020-10-29 09:56:27,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:27,726 INFO L93 Difference]: Finished difference Result 241 states and 323 transitions. [2020-10-29 09:56:27,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:56:27,727 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2020-10-29 09:56:27,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:27,728 INFO L225 Difference]: With dead ends: 241 [2020-10-29 09:56:27,728 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 09:56:27,729 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:56:27,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 09:56:27,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 123. [2020-10-29 09:56:27,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 09:56:27,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2020-10-29 09:56:27,742 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 37 [2020-10-29 09:56:27,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:27,743 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2020-10-29 09:56:27,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:56:27,743 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2020-10-29 09:56:27,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:56:27,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:27,744 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:27,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 09:56:27,744 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:27,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:27,744 INFO L82 PathProgramCache]: Analyzing trace with hash -479966624, now seen corresponding path program 8 times [2020-10-29 09:56:27,745 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:27,745 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [762797767] [2020-10-29 09:56:27,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:27,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:27,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:27,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:27,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:27,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:27,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:28,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:28,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:28,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:28,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:28,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:28,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:28,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:29,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:29,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 09:56:29,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:56:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-29 09:56:29,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:29,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:56:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:29,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 09:56:29,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:29,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:29,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:29,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:29,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:29,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:56:29,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:29,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:29,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:29,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:29,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:29,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:29,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:29,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:29,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:29,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:29,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:29,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:29,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:29,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:29,579 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 49 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:56:29,580 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [762797767] [2020-10-29 09:56:29,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:29,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:56:29,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266631732] [2020-10-29 09:56:29,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:56:29,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:29,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:56:29,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:56:29,582 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand 11 states. [2020-10-29 09:56:30,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:30,366 INFO L93 Difference]: Finished difference Result 312 states and 418 transitions. [2020-10-29 09:56:30,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:56:30,367 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-29 09:56:30,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:30,369 INFO L225 Difference]: With dead ends: 312 [2020-10-29 09:56:30,369 INFO L226 Difference]: Without dead ends: 201 [2020-10-29 09:56:30,370 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=155, Invalid=445, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:56:30,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-10-29 09:56:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 123. [2020-10-29 09:56:30,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-10-29 09:56:30,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 162 transitions. [2020-10-29 09:56:30,384 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 162 transitions. Word has length 40 [2020-10-29 09:56:30,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:30,385 INFO L481 AbstractCegarLoop]: Abstraction has 123 states and 162 transitions. [2020-10-29 09:56:30,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:56:30,385 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 162 transitions. [2020-10-29 09:56:30,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:56:30,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:30,385 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:30,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 09:56:30,386 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:30,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:30,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1491083874, now seen corresponding path program 9 times [2020-10-29 09:56:30,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:30,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127134533] [2020-10-29 09:56:30,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:30,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:30,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:30,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:30,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:30,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:30,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 09:56:30,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 09:56:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 526 [2020-10-29 09:56:30,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:30,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:56:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 09:56:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:31,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:31,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:31,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:31,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:31,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:56:31,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:31,058 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:31,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:31,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:31,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:31,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:31,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,065 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:31,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:31,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:31,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:31,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:31,065 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:31,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:31,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:31,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:31,071 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:31,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1127134533] [2020-10-29 09:56:31,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:31,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:56:31,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631121507] [2020-10-29 09:56:31,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:56:31,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:31,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:56:31,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:56:31,073 INFO L87 Difference]: Start difference. First operand 123 states and 162 transitions. Second operand 11 states. [2020-10-29 09:56:31,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:31,499 INFO L93 Difference]: Finished difference Result 265 states and 355 transitions. [2020-10-29 09:56:31,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:56:31,499 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-10-29 09:56:31,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:31,501 INFO L225 Difference]: With dead ends: 265 [2020-10-29 09:56:31,501 INFO L226 Difference]: Without dead ends: 154 [2020-10-29 09:56:31,502 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:56:31,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-10-29 09:56:31,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-10-29 09:56:31,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-10-29 09:56:31,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2020-10-29 09:56:31,517 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 40 [2020-10-29 09:56:31,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:31,517 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2020-10-29 09:56:31,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:56:31,518 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2020-10-29 09:56:31,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:56:31,518 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:31,518 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:31,518 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 09:56:31,519 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:31,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:31,519 INFO L82 PathProgramCache]: Analyzing trace with hash -776641918, now seen corresponding path program 10 times [2020-10-29 09:56:31,519 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:31,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [838787704] [2020-10-29 09:56:31,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:31,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:32,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:32,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:33,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:33,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:56:33,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:56:33,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1684 [2020-10-29 09:56:33,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:33,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:33,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:56:33,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:33,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:56:33,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:33,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:33,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:33,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:33,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:33,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:33,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:33,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 09:56:33,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:33,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:33,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:33,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:33,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:33,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:33,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:33,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:33,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:33,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:33,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:33,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:33,414 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:33,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:33,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:33,421 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 68 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:56:33,421 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [838787704] [2020-10-29 09:56:33,421 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:33,421 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:56:33,422 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2109744708] [2020-10-29 09:56:33,422 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:56:33,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:33,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:56:33,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:56:33,423 INFO L87 Difference]: Start difference. First operand 135 states and 178 transitions. Second operand 12 states. [2020-10-29 09:56:34,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:34,434 INFO L93 Difference]: Finished difference Result 364 states and 487 transitions. [2020-10-29 09:56:34,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 09:56:34,435 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-29 09:56:34,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:34,437 INFO L225 Difference]: With dead ends: 364 [2020-10-29 09:56:34,437 INFO L226 Difference]: Without dead ends: 241 [2020-10-29 09:56:34,439 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 404 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=420, Invalid=1140, Unknown=0, NotChecked=0, Total=1560 [2020-10-29 09:56:34,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-10-29 09:56:34,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 197. [2020-10-29 09:56:34,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 09:56:34,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 261 transitions. [2020-10-29 09:56:34,462 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 261 transitions. Word has length 43 [2020-10-29 09:56:34,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:34,463 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 261 transitions. [2020-10-29 09:56:34,463 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:56:34,463 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 261 transitions. [2020-10-29 09:56:34,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 09:56:34,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:34,464 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:34,464 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 09:56:34,465 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:34,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:34,466 INFO L82 PathProgramCache]: Analyzing trace with hash 1697861502, now seen corresponding path program 1 times [2020-10-29 09:56:34,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:34,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [67243363] [2020-10-29 09:56:34,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:34,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:34,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:34,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:34,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:34,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:34,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:35,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:35,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 09:56:35,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:56:35,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 679 [2020-10-29 09:56:35,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:35,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:56:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:35,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-29 09:56:35,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:35,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:35,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:35,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:35,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:35,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:35,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:56:35,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:35,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:35,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:35,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:35,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:35,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:35,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:35,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:35,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:35,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:35,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:35,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:35,316 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:35,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 70 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:35,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [67243363] [2020-10-29 09:56:35,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:35,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:56:35,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828027379] [2020-10-29 09:56:35,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:56:35,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:35,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:56:35,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:56:35,324 INFO L87 Difference]: Start difference. First operand 197 states and 261 transitions. Second operand 12 states. [2020-10-29 09:56:35,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:35,728 INFO L93 Difference]: Finished difference Result 433 states and 579 transitions. [2020-10-29 09:56:35,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:56:35,731 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 43 [2020-10-29 09:56:35,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:35,732 INFO L225 Difference]: With dead ends: 433 [2020-10-29 09:56:35,733 INFO L226 Difference]: Without dead ends: 248 [2020-10-29 09:56:35,737 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:56:35,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2020-10-29 09:56:35,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 215. [2020-10-29 09:56:35,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-29 09:56:35,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 285 transitions. [2020-10-29 09:56:35,769 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 285 transitions. Word has length 43 [2020-10-29 09:56:35,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:35,770 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 285 transitions. [2020-10-29 09:56:35,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:56:35,770 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 285 transitions. [2020-10-29 09:56:35,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:56:35,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:35,771 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:35,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 09:56:35,771 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:35,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:35,772 INFO L82 PathProgramCache]: Analyzing trace with hash -796976930, now seen corresponding path program 2 times [2020-10-29 09:56:35,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:35,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [38183408] [2020-10-29 09:56:35,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:35,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:35,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:35,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:36,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:36,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:36,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:36,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:36,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:56:36,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:56:36,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1078 [2020-10-29 09:56:36,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:36,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:56:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:36,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 09:56:36,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:37,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:37,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:37,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:37,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:37,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:37,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:37,040 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:56:37,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:37,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:37,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:37,041 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:37,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:37,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:37,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:37,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:37,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:37,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:37,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:37,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:37,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:37,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:37,053 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 90 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:56:37,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [38183408] [2020-10-29 09:56:37,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:37,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:56:37,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553606597] [2020-10-29 09:56:37,054 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:56:37,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:37,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:56:37,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:56:37,055 INFO L87 Difference]: Start difference. First operand 215 states and 285 transitions. Second operand 13 states. [2020-10-29 09:56:38,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:38,232 INFO L93 Difference]: Finished difference Result 542 states and 721 transitions. [2020-10-29 09:56:38,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 09:56:38,235 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-29 09:56:38,236 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:38,238 INFO L225 Difference]: With dead ends: 542 [2020-10-29 09:56:38,238 INFO L226 Difference]: Without dead ends: 339 [2020-10-29 09:56:38,240 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 538 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=535, Invalid=1445, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:56:38,241 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 339 states. [2020-10-29 09:56:38,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 339 to 215. [2020-10-29 09:56:38,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-10-29 09:56:38,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 285 transitions. [2020-10-29 09:56:38,265 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 285 transitions. Word has length 46 [2020-10-29 09:56:38,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:38,265 INFO L481 AbstractCegarLoop]: Abstraction has 215 states and 285 transitions. [2020-10-29 09:56:38,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:56:38,265 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 285 transitions. [2020-10-29 09:56:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 09:56:38,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:38,266 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:38,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 09:56:38,267 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:38,267 INFO L82 PathProgramCache]: Analyzing trace with hash -1808094180, now seen corresponding path program 3 times [2020-10-29 09:56:38,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:38,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [436577380] [2020-10-29 09:56:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:38,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:38,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:38,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:38,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:38,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:38,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:38,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:38,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:56:38,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:56:38,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 623 [2020-10-29 09:56:38,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:38,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:56:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:38,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:56:38,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:39,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:39,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:39,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:39,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:39,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:39,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:56:39,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:39,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:39,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:39,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:39,073 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:39,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:39,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:39,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:39,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:39,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:39,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:39,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:39,077 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:39,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:39,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:39,083 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:39,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [436577380] [2020-10-29 09:56:39,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:39,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:56:39,084 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138022738] [2020-10-29 09:56:39,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:56:39,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:39,085 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:56:39,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:56:39,085 INFO L87 Difference]: Start difference. First operand 215 states and 285 transitions. Second operand 13 states. [2020-10-29 09:56:39,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:39,601 INFO L93 Difference]: Finished difference Result 469 states and 627 transitions. [2020-10-29 09:56:39,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:56:39,602 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 46 [2020-10-29 09:56:39,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:39,604 INFO L225 Difference]: With dead ends: 469 [2020-10-29 09:56:39,604 INFO L226 Difference]: Without dead ends: 266 [2020-10-29 09:56:39,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:56:39,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2020-10-29 09:56:39,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 233. [2020-10-29 09:56:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-29 09:56:39,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 309 transitions. [2020-10-29 09:56:39,646 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 309 transitions. Word has length 46 [2020-10-29 09:56:39,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:39,646 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 309 transitions. [2020-10-29 09:56:39,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:56:39,647 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 309 transitions. [2020-10-29 09:56:39,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:56:39,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:39,647 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:39,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 09:56:39,648 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:39,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:39,648 INFO L82 PathProgramCache]: Analyzing trace with hash -1707995264, now seen corresponding path program 4 times [2020-10-29 09:56:39,648 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:39,649 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1582574174] [2020-10-29 09:56:39,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:39,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:39,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:39,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:39,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:39,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:39,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:40,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:40,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:40,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:56:40,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:56:40,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 851 [2020-10-29 09:56:40,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:40,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:40,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:56:40,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:40,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 09:56:40,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:40,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:40,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:40,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:40,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:40,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:40,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:56:40,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:40,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:40,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:40,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:40,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:40,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:40,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:40,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:40,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:40,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:40,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:40,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:40,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:40,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:40,705 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 115 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:56:40,705 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1582574174] [2020-10-29 09:56:40,705 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:40,705 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:56:40,706 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118618432] [2020-10-29 09:56:40,706 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:56:40,706 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:40,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:56:40,707 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:56:40,707 INFO L87 Difference]: Start difference. First operand 233 states and 309 transitions. Second operand 14 states. [2020-10-29 09:56:41,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:41,935 INFO L93 Difference]: Finished difference Result 588 states and 781 transitions. [2020-10-29 09:56:41,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 09:56:41,943 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-29 09:56:41,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:41,948 INFO L225 Difference]: With dead ends: 588 [2020-10-29 09:56:41,948 INFO L226 Difference]: Without dead ends: 367 [2020-10-29 09:56:41,951 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 691 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=664, Invalid=1786, Unknown=0, NotChecked=0, Total=2450 [2020-10-29 09:56:41,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 367 states. [2020-10-29 09:56:41,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 367 to 233. [2020-10-29 09:56:41,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-29 09:56:41,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 309 transitions. [2020-10-29 09:56:41,986 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 309 transitions. Word has length 49 [2020-10-29 09:56:41,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:41,987 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 309 transitions. [2020-10-29 09:56:41,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:56:41,987 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 309 transitions. [2020-10-29 09:56:41,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-29 09:56:41,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:41,988 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:41,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 09:56:41,988 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:41,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:41,989 INFO L82 PathProgramCache]: Analyzing trace with hash 1575854782, now seen corresponding path program 5 times [2020-10-29 09:56:41,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:41,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338149328] [2020-10-29 09:56:41,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:41,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:42,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:42,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:42,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:42,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:42,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:42,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-29 09:56:42,633 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:56:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 634 [2020-10-29 09:56:42,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:42,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:42,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:56:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:42,634 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-29 09:56:42,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:42,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:42,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:42,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:42,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:42,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:42,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:42,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:56:42,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:42,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:42,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:42,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:42,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:42,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:42,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:42,865 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:42,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:42,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:42,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:42,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:42,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:42,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:42,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:42,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:56:42,877 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 0 proven. 117 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:42,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338149328] [2020-10-29 09:56:42,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:42,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:56:42,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946984962] [2020-10-29 09:56:42,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:56:42,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:42,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:56:42,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=112, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:56:42,882 INFO L87 Difference]: Start difference. First operand 233 states and 309 transitions. Second operand 14 states. [2020-10-29 09:56:43,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:43,404 INFO L93 Difference]: Finished difference Result 505 states and 675 transitions. [2020-10-29 09:56:43,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:56:43,404 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 49 [2020-10-29 09:56:43,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:43,407 INFO L225 Difference]: With dead ends: 505 [2020-10-29 09:56:43,408 INFO L226 Difference]: Without dead ends: 284 [2020-10-29 09:56:43,409 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=204, Invalid=396, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:56:43,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 284 states. [2020-10-29 09:56:43,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 284 to 251. [2020-10-29 09:56:43,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-10-29 09:56:43,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 333 transitions. [2020-10-29 09:56:43,434 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 333 transitions. Word has length 49 [2020-10-29 09:56:43,435 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:43,435 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 333 transitions. [2020-10-29 09:56:43,435 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:56:43,435 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 333 transitions. [2020-10-29 09:56:43,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-29 09:56:43,436 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:43,436 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:43,436 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 09:56:43,436 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:43,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:43,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1956840034, now seen corresponding path program 6 times [2020-10-29 09:56:43,437 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:43,437 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [303873339] [2020-10-29 09:56:43,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:43,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:43,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:43,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:43,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:43,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:43,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:43,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:43,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:44,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:44,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:44,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-10-29 09:56:44,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:56:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1323 [2020-10-29 09:56:44,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:44,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:56:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:44,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 09:56:44,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:44,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:44,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:44,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:44,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:44,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:44,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:44,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:56:44,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:44,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:44,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:44,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:44,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:44,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:44,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:44,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:44,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:44,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:44,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:44,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:44,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:56:44,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:44,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:44,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:44,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:44,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:44,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:44,971 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:44,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [303873339] [2020-10-29 09:56:44,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:44,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:56:44,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822096867] [2020-10-29 09:56:44,973 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:56:44,974 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:44,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:56:44,975 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:56:44,975 INFO L87 Difference]: Start difference. First operand 251 states and 333 transitions. Second operand 15 states. [2020-10-29 09:56:45,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:45,535 INFO L93 Difference]: Finished difference Result 541 states and 723 transitions. [2020-10-29 09:56:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:56:45,536 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 52 [2020-10-29 09:56:45,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:45,538 INFO L225 Difference]: With dead ends: 541 [2020-10-29 09:56:45,538 INFO L226 Difference]: Without dead ends: 302 [2020-10-29 09:56:45,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:56:45,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-10-29 09:56:45,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 269. [2020-10-29 09:56:45,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-29 09:56:45,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 357 transitions. [2020-10-29 09:56:45,568 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 357 transitions. Word has length 52 [2020-10-29 09:56:45,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:45,568 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 357 transitions. [2020-10-29 09:56:45,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:56:45,568 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 357 transitions. [2020-10-29 09:56:45,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:56:45,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:45,569 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:45,569 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 09:56:45,569 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:45,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:45,570 INFO L82 PathProgramCache]: Analyzing trace with hash -589482306, now seen corresponding path program 7 times [2020-10-29 09:56:45,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:45,570 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1886438224] [2020-10-29 09:56:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:45,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:45,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:45,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:45,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:45,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:45,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:45,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:46,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:46,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:46,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:46,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:46,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:48,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:48,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:56:48,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:56:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3197 [2020-10-29 09:56:48,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:48,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:56:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:48,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-29 09:56:48,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:48,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:48,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:48,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:48,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:48,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:48,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:48,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:56:48,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:48,983 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:48,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:48,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:48,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:48,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:48,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:48,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:48,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:56:48,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:48,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:48,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:48,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:49,003 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 169 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:56:49,003 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1886438224] [2020-10-29 09:56:49,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:49,004 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:56:49,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111020987] [2020-10-29 09:56:49,005 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:56:49,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:49,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:56:49,005 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:56:49,006 INFO L87 Difference]: Start difference. First operand 269 states and 357 transitions. Second operand 15 states. [2020-10-29 09:56:50,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:50,020 INFO L93 Difference]: Finished difference Result 666 states and 888 transitions. [2020-10-29 09:56:50,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 09:56:50,020 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-10-29 09:56:50,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:50,024 INFO L225 Difference]: With dead ends: 666 [2020-10-29 09:56:50,024 INFO L226 Difference]: Without dead ends: 409 [2020-10-29 09:56:50,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=363, Invalid=969, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:56:50,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2020-10-29 09:56:50,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 185. [2020-10-29 09:56:50,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2020-10-29 09:56:50,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 244 transitions. [2020-10-29 09:56:50,052 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 244 transitions. Word has length 55 [2020-10-29 09:56:50,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:50,053 INFO L481 AbstractCegarLoop]: Abstraction has 185 states and 244 transitions. [2020-10-29 09:56:50,053 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:56:50,053 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 244 transitions. [2020-10-29 09:56:50,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-29 09:56:50,057 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:50,057 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:50,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 09:56:50,058 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:50,058 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:50,058 INFO L82 PathProgramCache]: Analyzing trace with hash 2117137088, now seen corresponding path program 8 times [2020-10-29 09:56:50,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:50,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1908368005] [2020-10-29 09:56:50,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:50,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:50,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:50,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:50,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:50,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:50,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:50,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:51,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:51,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 09:56:51,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:56:51,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-29 09:56:51,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:51,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:56:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:51,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 09:56:51,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:51,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:51,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:51,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:51,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:51,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:51,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:56:51,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:51,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:51,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:51,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:51,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:51,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:51,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:51,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:51,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:51,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:56:51,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:51,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:51,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:51,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:51,323 INFO L134 CoverageAnalysis]: Checked inductivity of 176 backedges. 0 proven. 176 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:51,324 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1908368005] [2020-10-29 09:56:51,324 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:51,324 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:56:51,324 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1525647609] [2020-10-29 09:56:51,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:56:51,325 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:51,325 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:56:51,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:56:51,325 INFO L87 Difference]: Start difference. First operand 185 states and 244 transitions. Second operand 16 states. [2020-10-29 09:56:52,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:52,004 INFO L93 Difference]: Finished difference Result 389 states and 519 transitions. [2020-10-29 09:56:52,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:56:52,005 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 55 [2020-10-29 09:56:52,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:52,009 INFO L225 Difference]: With dead ends: 389 [2020-10-29 09:56:52,009 INFO L226 Difference]: Without dead ends: 216 [2020-10-29 09:56:52,010 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:56:52,010 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2020-10-29 09:56:52,029 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 197. [2020-10-29 09:56:52,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2020-10-29 09:56:52,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 260 transitions. [2020-10-29 09:56:52,031 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 260 transitions. Word has length 55 [2020-10-29 09:56:52,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:52,031 INFO L481 AbstractCegarLoop]: Abstraction has 197 states and 260 transitions. [2020-10-29 09:56:52,031 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:56:52,031 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 260 transitions. [2020-10-29 09:56:52,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:56:52,032 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:52,032 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:52,032 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 09:56:52,032 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:52,033 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:52,033 INFO L82 PathProgramCache]: Analyzing trace with hash 77108828, now seen corresponding path program 9 times [2020-10-29 09:56:52,033 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:52,033 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235669718] [2020-10-29 09:56:52,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:52,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:52,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:54,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:54,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:56:54,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:56:54,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2025 [2020-10-29 09:56:54,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:54,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:56:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:54,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 09:56:54,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:54,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:54,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:54,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:54,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:54,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:54,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:56:54,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:54,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:54,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:54,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:54,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:54,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:54,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:54,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:54,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:54,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:54,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:54,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:56:54,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:54,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:54,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:54,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:54,302 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 203 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:56:54,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235669718] [2020-10-29 09:56:54,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:54,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:56:54,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [380650466] [2020-10-29 09:56:54,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:56:54,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:54,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:56:54,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:56:54,304 INFO L87 Difference]: Start difference. First operand 197 states and 260 transitions. Second operand 16 states. [2020-10-29 09:56:55,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:55,823 INFO L93 Difference]: Finished difference Result 544 states and 719 transitions. [2020-10-29 09:56:55,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2020-10-29 09:56:55,824 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 58 [2020-10-29 09:56:55,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:55,827 INFO L225 Difference]: With dead ends: 544 [2020-10-29 09:56:55,828 INFO L226 Difference]: Without dead ends: 359 [2020-10-29 09:56:55,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1054 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=964, Invalid=2576, Unknown=0, NotChecked=0, Total=3540 [2020-10-29 09:56:55,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2020-10-29 09:56:55,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 287. [2020-10-29 09:56:55,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 287 states. [2020-10-29 09:56:55,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 381 transitions. [2020-10-29 09:56:55,860 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 381 transitions. Word has length 58 [2020-10-29 09:56:55,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:55,860 INFO L481 AbstractCegarLoop]: Abstraction has 287 states and 381 transitions. [2020-10-29 09:56:55,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:56:55,860 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 381 transitions. [2020-10-29 09:56:55,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-29 09:56:55,861 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:55,861 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:55,861 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 09:56:55,861 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:55,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:55,862 INFO L82 PathProgramCache]: Analyzing trace with hash -1511239074, now seen corresponding path program 10 times [2020-10-29 09:56:55,862 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:55,862 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [168573776] [2020-10-29 09:56:55,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:55,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:55,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:55,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:56,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:56,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:56,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:56,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:56,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:56,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 09:56:56,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:56:56,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1126 [2020-10-29 09:56:56,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:56,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:56:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:56,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 09:56:56,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:57,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:56:57,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:57,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:57,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:57,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:56:57,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:57,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:56:57,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:57,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:57,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:56:57,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:57,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:56:57,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:57,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:57,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:57,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:56:57,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:56:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:56:57,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:57,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:56:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:56:57,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:56:57,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:56:57,275 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 0 proven. 210 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:56:57,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [168573776] [2020-10-29 09:56:57,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:56:57,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:56:57,276 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735684042] [2020-10-29 09:56:57,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:56:57,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:56:57,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:56:57,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:56:57,277 INFO L87 Difference]: Start difference. First operand 287 states and 381 transitions. Second operand 17 states. [2020-10-29 09:56:58,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:56:58,036 INFO L93 Difference]: Finished difference Result 613 states and 819 transitions. [2020-10-29 09:56:58,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:56:58,041 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 58 [2020-10-29 09:56:58,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:56:58,044 INFO L225 Difference]: With dead ends: 613 [2020-10-29 09:56:58,044 INFO L226 Difference]: Without dead ends: 338 [2020-10-29 09:56:58,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:56:58,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2020-10-29 09:56:58,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 305. [2020-10-29 09:56:58,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-29 09:56:58,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 405 transitions. [2020-10-29 09:56:58,075 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 405 transitions. Word has length 58 [2020-10-29 09:56:58,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:56:58,075 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 405 transitions. [2020-10-29 09:56:58,075 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:56:58,075 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 405 transitions. [2020-10-29 09:56:58,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:56:58,076 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:56:58,076 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 10, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:56:58,076 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 09:56:58,077 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:56:58,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:56:58,077 INFO L82 PathProgramCache]: Analyzing trace with hash -1435194882, now seen corresponding path program 11 times [2020-10-29 09:56:58,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:56:58,078 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2059574219] [2020-10-29 09:56:58,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:56:58,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:56:58,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:58,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:56:59,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:56:59,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:56:59,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:56:59,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1907 [2020-10-29 09:56:59,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:56:59,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:56:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:56:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:56:59,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 09:56:59,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:00,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:00,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:00,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:00,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:00,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:00,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:00,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:00,260 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 240 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:57:00,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2059574219] [2020-10-29 09:57:00,260 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:00,260 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:57:00,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965474430] [2020-10-29 09:57:00,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:57:00,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:00,261 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:57:00,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:57:00,262 INFO L87 Difference]: Start difference. First operand 305 states and 405 transitions. Second operand 17 states. [2020-10-29 09:57:02,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:02,107 INFO L93 Difference]: Finished difference Result 786 states and 1041 transitions. [2020-10-29 09:57:02,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2020-10-29 09:57:02,108 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-10-29 09:57:02,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:02,111 INFO L225 Difference]: With dead ends: 786 [2020-10-29 09:57:02,111 INFO L226 Difference]: Without dead ends: 493 [2020-10-29 09:57:02,114 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1223 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=1119, Invalid=2913, Unknown=0, NotChecked=0, Total=4032 [2020-10-29 09:57:02,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2020-10-29 09:57:02,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 305. [2020-10-29 09:57:02,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-29 09:57:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 405 transitions. [2020-10-29 09:57:02,149 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 405 transitions. Word has length 61 [2020-10-29 09:57:02,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:02,150 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 405 transitions. [2020-10-29 09:57:02,150 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:57:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 405 transitions. [2020-10-29 09:57:02,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:57:02,151 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:02,151 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:02,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 09:57:02,151 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:02,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:02,151 INFO L82 PathProgramCache]: Analyzing trace with hash 1271424512, now seen corresponding path program 12 times [2020-10-29 09:57:02,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:02,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2120471076] [2020-10-29 09:57:02,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:02,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:02,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:02,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:02,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:02,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:02,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:02,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:02,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:02,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:03,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:03,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:57:03,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 954 [2020-10-29 09:57:03,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:03,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:57:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:03,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-29 09:57:03,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:03,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:03,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:03,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:03,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:03,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:03,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:57:03,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:03,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:03,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:03,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:03,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:03,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:03,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:03,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:03,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:03,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:03,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:03,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:03,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:03,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:03,397 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:57:03,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2120471076] [2020-10-29 09:57:03,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:03,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:57:03,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410464845] [2020-10-29 09:57:03,398 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:57:03,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:03,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:57:03,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:57:03,399 INFO L87 Difference]: Start difference. First operand 305 states and 405 transitions. Second operand 18 states. [2020-10-29 09:57:05,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:05,255 INFO L93 Difference]: Finished difference Result 764 states and 1013 transitions. [2020-10-29 09:57:05,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2020-10-29 09:57:05,256 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-29 09:57:05,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:05,258 INFO L225 Difference]: With dead ends: 764 [2020-10-29 09:57:05,259 INFO L226 Difference]: Without dead ends: 471 [2020-10-29 09:57:05,261 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1448 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=1303, Invalid=3389, Unknown=0, NotChecked=0, Total=4692 [2020-10-29 09:57:05,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 471 states. [2020-10-29 09:57:05,295 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 471 to 305. [2020-10-29 09:57:05,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-29 09:57:05,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 405 transitions. [2020-10-29 09:57:05,296 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 405 transitions. Word has length 61 [2020-10-29 09:57:05,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:05,297 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 405 transitions. [2020-10-29 09:57:05,297 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:57:05,297 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 405 transitions. [2020-10-29 09:57:05,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 09:57:05,298 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:05,298 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:05,298 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 09:57:05,298 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:05,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:05,299 INFO L82 PathProgramCache]: Analyzing trace with hash 260307262, now seen corresponding path program 13 times [2020-10-29 09:57:05,299 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:05,299 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [704832330] [2020-10-29 09:57:05,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:05,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:05,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:05,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:06,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:06,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-29 09:57:06,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:57:06,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 852 [2020-10-29 09:57:06,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:06,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:57:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 09:57:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:06,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:06,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:06,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:06,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:06,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:06,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:06,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:57:06,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:06,449 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:06,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:06,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:06,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:06,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:06,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:06,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:06,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:06,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:06,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:06,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:06,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:06,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:06,464 INFO L134 CoverageAnalysis]: Checked inductivity of 247 backedges. 0 proven. 247 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:06,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [704832330] [2020-10-29 09:57:06,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:06,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:57:06,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588160509] [2020-10-29 09:57:06,465 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:57:06,465 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:06,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:57:06,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:57:06,465 INFO L87 Difference]: Start difference. First operand 305 states and 405 transitions. Second operand 18 states. [2020-10-29 09:57:07,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:07,309 INFO L93 Difference]: Finished difference Result 649 states and 867 transitions. [2020-10-29 09:57:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:57:07,310 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 61 [2020-10-29 09:57:07,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:07,312 INFO L225 Difference]: With dead ends: 649 [2020-10-29 09:57:07,312 INFO L226 Difference]: Without dead ends: 356 [2020-10-29 09:57:07,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:57:07,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 356 states. [2020-10-29 09:57:07,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 356 to 323. [2020-10-29 09:57:07,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 323 states. [2020-10-29 09:57:07,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 323 states to 323 states and 429 transitions. [2020-10-29 09:57:07,354 INFO L78 Accepts]: Start accepts. Automaton has 323 states and 429 transitions. Word has length 61 [2020-10-29 09:57:07,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:07,354 INFO L481 AbstractCegarLoop]: Abstraction has 323 states and 429 transitions. [2020-10-29 09:57:07,354 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:57:07,354 INFO L276 IsEmpty]: Start isEmpty. Operand 323 states and 429 transitions. [2020-10-29 09:57:07,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:57:07,355 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:07,355 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 12, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:07,355 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 09:57:07,355 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:07,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:07,356 INFO L82 PathProgramCache]: Analyzing trace with hash -1856432354, now seen corresponding path program 14 times [2020-10-29 09:57:07,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:07,356 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1033587878] [2020-10-29 09:57:07,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:07,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:08,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:08,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:57:08,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 882 [2020-10-29 09:57:08,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:08,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:57:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:08,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-29 09:57:08,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:08,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:08,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:08,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:08,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:08,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:08,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:08,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:08,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:08,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:08,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:08,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:08,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:08,561 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 285 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:57:08,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1033587878] [2020-10-29 09:57:08,562 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:08,562 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:57:08,562 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485483060] [2020-10-29 09:57:08,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:57:08,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:08,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:57:08,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=229, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:57:08,563 INFO L87 Difference]: Start difference. First operand 323 states and 429 transitions. Second operand 19 states. [2020-10-29 09:57:10,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:10,015 INFO L93 Difference]: Finished difference Result 768 states and 1026 transitions. [2020-10-29 09:57:10,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 09:57:10,016 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-29 09:57:10,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:10,018 INFO L225 Difference]: With dead ends: 768 [2020-10-29 09:57:10,018 INFO L226 Difference]: Without dead ends: 457 [2020-10-29 09:57:10,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 467 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=667, Invalid=1685, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 09:57:10,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2020-10-29 09:57:10,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 221. [2020-10-29 09:57:10,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 221 states. [2020-10-29 09:57:10,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 221 states to 221 states and 292 transitions. [2020-10-29 09:57:10,051 INFO L78 Accepts]: Start accepts. Automaton has 221 states and 292 transitions. Word has length 64 [2020-10-29 09:57:10,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:10,052 INFO L481 AbstractCegarLoop]: Abstraction has 221 states and 292 transitions. [2020-10-29 09:57:10,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:57:10,052 INFO L276 IsEmpty]: Start isEmpty. Operand 221 states and 292 transitions. [2020-10-29 09:57:10,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 09:57:10,053 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:10,053 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:10,053 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 09:57:10,053 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:10,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:10,054 INFO L82 PathProgramCache]: Analyzing trace with hash 1427417692, now seen corresponding path program 15 times [2020-10-29 09:57:10,054 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:10,054 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870674351] [2020-10-29 09:57:10,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:10,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:10,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:10,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:10,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:11,001 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:11,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 09:57:11,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:57:11,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 938 [2020-10-29 09:57:11,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:11,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:57:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:11,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 09:57:11,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:11,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:11,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:11,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:11,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:11,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:11,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:11,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:57:11,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:11,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:11,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:11,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:11,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:11,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:11,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:11,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:11,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:11,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:11,313 INFO L134 CoverageAnalysis]: Checked inductivity of 287 backedges. 0 proven. 287 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:11,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870674351] [2020-10-29 09:57:11,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:11,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:57:11,314 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26419205] [2020-10-29 09:57:11,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:57:11,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:11,314 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:57:11,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=202, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:57:11,315 INFO L87 Difference]: Start difference. First operand 221 states and 292 transitions. Second operand 19 states. [2020-10-29 09:57:12,200 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:12,201 INFO L93 Difference]: Finished difference Result 461 states and 615 transitions. [2020-10-29 09:57:12,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:57:12,201 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 64 [2020-10-29 09:57:12,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:12,203 INFO L225 Difference]: With dead ends: 461 [2020-10-29 09:57:12,203 INFO L226 Difference]: Without dead ends: 252 [2020-10-29 09:57:12,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=414, Invalid=776, Unknown=0, NotChecked=0, Total=1190 [2020-10-29 09:57:12,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2020-10-29 09:57:12,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 233. [2020-10-29 09:57:12,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-29 09:57:12,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 308 transitions. [2020-10-29 09:57:12,236 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 308 transitions. Word has length 64 [2020-10-29 09:57:12,237 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:12,237 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 308 transitions. [2020-10-29 09:57:12,237 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:57:12,237 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 308 transitions. [2020-10-29 09:57:12,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 09:57:12,238 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:12,238 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 13, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:12,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 09:57:12,238 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:12,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:12,239 INFO L82 PathProgramCache]: Analyzing trace with hash -229873344, now seen corresponding path program 16 times [2020-10-29 09:57:12,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:12,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [680699609] [2020-10-29 09:57:12,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:12,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:12,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:12,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:13,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:13,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 09:57:13,362 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:13,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1112 [2020-10-29 09:57:13,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:13,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:57:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:13,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:57:13,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:13,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:13,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:13,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:13,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:13,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:13,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:13,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:57:13,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:13,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:13,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:13,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:13,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:13,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:13,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:13,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:13,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:13,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:13,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:13,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:13,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:13,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:13,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:13,709 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 328 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:57:13,709 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [680699609] [2020-10-29 09:57:13,709 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:13,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:57:13,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076226331] [2020-10-29 09:57:13,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:57:13,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:13,710 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:57:13,710 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=128, Invalid=252, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:57:13,711 INFO L87 Difference]: Start difference. First operand 233 states and 308 transitions. Second operand 20 states. [2020-10-29 09:57:15,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:15,309 INFO L93 Difference]: Finished difference Result 586 states and 782 transitions. [2020-10-29 09:57:15,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 09:57:15,310 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-29 09:57:15,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:15,312 INFO L225 Difference]: With dead ends: 586 [2020-10-29 09:57:15,312 INFO L226 Difference]: Without dead ends: 365 [2020-10-29 09:57:15,313 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 531 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=758, Invalid=1894, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 09:57:15,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 365 states. [2020-10-29 09:57:15,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 365 to 233. [2020-10-29 09:57:15,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2020-10-29 09:57:15,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 308 transitions. [2020-10-29 09:57:15,350 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 308 transitions. Word has length 67 [2020-10-29 09:57:15,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:15,351 INFO L481 AbstractCegarLoop]: Abstraction has 233 states and 308 transitions. [2020-10-29 09:57:15,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:57:15,351 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 308 transitions. [2020-10-29 09:57:15,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 09:57:15,351 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:15,351 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:15,352 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 09:57:15,352 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:15,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:15,352 INFO L82 PathProgramCache]: Analyzing trace with hash -1240990594, now seen corresponding path program 17 times [2020-10-29 09:57:15,352 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:15,353 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2021761420] [2020-10-29 09:57:15,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:15,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:15,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:15,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:16,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:16,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-29 09:57:16,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:57:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 754 [2020-10-29 09:57:16,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:16,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 09:57:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:16,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 09:57:16,118 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:16,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:16,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:16,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:16,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:16,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:16,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:57:16,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:16,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:16,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:16,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:16,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:16,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:16,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:16,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:16,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:16,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:16,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:16,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:16,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:16,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:16,485 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 0 proven. 330 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:16,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2021761420] [2020-10-29 09:57:16,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:16,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:57:16,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013924224] [2020-10-29 09:57:16,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:57:16,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:16,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:57:16,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=223, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:57:16,487 INFO L87 Difference]: Start difference. First operand 233 states and 308 transitions. Second operand 20 states. [2020-10-29 09:57:17,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:17,395 INFO L93 Difference]: Finished difference Result 485 states and 647 transitions. [2020-10-29 09:57:17,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 09:57:17,396 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 67 [2020-10-29 09:57:17,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:17,397 INFO L225 Difference]: With dead ends: 485 [2020-10-29 09:57:17,397 INFO L226 Difference]: Without dead ends: 264 [2020-10-29 09:57:17,398 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 151 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=465, Invalid=867, Unknown=0, NotChecked=0, Total=1332 [2020-10-29 09:57:17,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2020-10-29 09:57:17,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 245. [2020-10-29 09:57:17,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 245 states. [2020-10-29 09:57:17,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 324 transitions. [2020-10-29 09:57:17,431 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 324 transitions. Word has length 67 [2020-10-29 09:57:17,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:17,431 INFO L481 AbstractCegarLoop]: Abstraction has 245 states and 324 transitions. [2020-10-29 09:57:17,431 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:57:17,431 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 324 transitions. [2020-10-29 09:57:17,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:57:17,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:17,432 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 14, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:17,433 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 09:57:17,433 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:17,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:17,433 INFO L82 PathProgramCache]: Analyzing trace with hash 768560094, now seen corresponding path program 18 times [2020-10-29 09:57:17,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:17,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [683842838] [2020-10-29 09:57:17,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:17,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:17,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:17,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:17,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:17,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:17,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:17,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:18,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:18,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 09:57:18,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1088 [2020-10-29 09:57:18,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:18,532 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:57:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:18,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 09:57:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:18,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:18,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:18,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:18,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:18,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:18,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:18,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:57:18,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:18,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:18,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:18,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:18,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:18,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:18,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:18,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:18,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:18,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:18,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:57:18,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:18,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:18,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:18,902 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 374 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:57:18,903 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [683842838] [2020-10-29 09:57:18,903 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:18,903 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:57:18,903 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416615126] [2020-10-29 09:57:18,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:57:18,904 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:18,904 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:57:18,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=144, Invalid=276, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:57:18,905 INFO L87 Difference]: Start difference. First operand 245 states and 324 transitions. Second operand 21 states. [2020-10-29 09:57:21,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:21,274 INFO L93 Difference]: Finished difference Result 656 states and 867 transitions. [2020-10-29 09:57:21,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2020-10-29 09:57:21,275 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 70 [2020-10-29 09:57:21,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:21,277 INFO L225 Difference]: With dead ends: 656 [2020-10-29 09:57:21,277 INFO L226 Difference]: Without dead ends: 423 [2020-10-29 09:57:21,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2294 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=1959, Invalid=5181, Unknown=0, NotChecked=0, Total=7140 [2020-10-29 09:57:21,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 423 states. [2020-10-29 09:57:21,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 423 to 359. [2020-10-29 09:57:21,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 359 states. [2020-10-29 09:57:21,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 477 transitions. [2020-10-29 09:57:21,320 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 477 transitions. Word has length 70 [2020-10-29 09:57:21,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:21,320 INFO L481 AbstractCegarLoop]: Abstraction has 359 states and 477 transitions. [2020-10-29 09:57:21,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:57:21,321 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 477 transitions. [2020-10-29 09:57:21,321 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 09:57:21,321 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:21,322 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:21,322 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 09:57:21,322 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:21,322 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:21,322 INFO L82 PathProgramCache]: Analyzing trace with hash -242557156, now seen corresponding path program 19 times [2020-10-29 09:57:21,323 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:21,323 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [116255655] [2020-10-29 09:57:21,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:21,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:21,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:21,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:21,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:21,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:22,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:22,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 09:57:22,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:57:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 769 [2020-10-29 09:57:22,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:22,103 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 09:57:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:22,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-29 09:57:22,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:22,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:22,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:22,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:22,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:22,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:22,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:22,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:57:22,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:22,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:22,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:22,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:22,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:22,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:22,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:22,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:22,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:22,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:22,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:22,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:22,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:22,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:22,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:22,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:22,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:22,507 INFO L134 CoverageAnalysis]: Checked inductivity of 376 backedges. 0 proven. 376 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:22,507 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [116255655] [2020-10-29 09:57:22,507 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:22,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 09:57:22,508 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745026627] [2020-10-29 09:57:22,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 09:57:22,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:22,509 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 09:57:22,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=245, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:57:22,509 INFO L87 Difference]: Start difference. First operand 359 states and 477 transitions. Second operand 21 states. [2020-10-29 09:57:23,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:23,506 INFO L93 Difference]: Finished difference Result 757 states and 1011 transitions. [2020-10-29 09:57:23,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 09:57:23,507 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 70 [2020-10-29 09:57:23,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:23,509 INFO L225 Difference]: With dead ends: 757 [2020-10-29 09:57:23,509 INFO L226 Difference]: Without dead ends: 410 [2020-10-29 09:57:23,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 169 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=519, Invalid=963, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 09:57:23,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 410 states. [2020-10-29 09:57:23,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 410 to 377. [2020-10-29 09:57:23,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-29 09:57:23,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 501 transitions. [2020-10-29 09:57:23,552 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 501 transitions. Word has length 70 [2020-10-29 09:57:23,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:23,553 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 501 transitions. [2020-10-29 09:57:23,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 09:57:23,553 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 501 transitions. [2020-10-29 09:57:23,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 09:57:23,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:23,554 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 15, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:23,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 09:57:23,554 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:23,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:23,555 INFO L82 PathProgramCache]: Analyzing trace with hash -1844380544, now seen corresponding path program 20 times [2020-10-29 09:57:23,555 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:23,555 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1095135124] [2020-10-29 09:57:23,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:23,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:23,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:23,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:23,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:23,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:23,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:23,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:23,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:24,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:24,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:24,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 09:57:24,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:24,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1222 [2020-10-29 09:57:24,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:24,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:57:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:24,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 09:57:24,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:25,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:25,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:25,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:25,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:25,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:25,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:57:25,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:25,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:25,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:25,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:25,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:25,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:25,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:25,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:25,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:25,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:25,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:25,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:25,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:25,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:25,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:25,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:25,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:25,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:25,208 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 0 proven. 425 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:25,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1095135124] [2020-10-29 09:57:25,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:25,208 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:57:25,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391344815] [2020-10-29 09:57:25,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:57:25,209 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:25,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:57:25,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=268, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:57:25,210 INFO L87 Difference]: Start difference. First operand 377 states and 501 transitions. Second operand 22 states. [2020-10-29 09:57:26,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:26,051 INFO L93 Difference]: Finished difference Result 793 states and 1059 transitions. [2020-10-29 09:57:26,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 09:57:26,052 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 73 [2020-10-29 09:57:26,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:26,054 INFO L225 Difference]: With dead ends: 793 [2020-10-29 09:57:26,054 INFO L226 Difference]: Without dead ends: 428 [2020-10-29 09:57:26,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=576, Invalid=1064, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 09:57:26,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 428 states. [2020-10-29 09:57:26,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 428 to 395. [2020-10-29 09:57:26,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-29 09:57:26,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 525 transitions. [2020-10-29 09:57:26,102 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 525 transitions. Word has length 73 [2020-10-29 09:57:26,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:26,102 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 525 transitions. [2020-10-29 09:57:26,102 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:57:26,102 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 525 transitions. [2020-10-29 09:57:26,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 09:57:26,103 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:26,103 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 15, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:26,103 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 09:57:26,104 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:26,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:26,104 INFO L82 PathProgramCache]: Analyzing trace with hash -383306596, now seen corresponding path program 21 times [2020-10-29 09:57:26,104 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:26,104 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183926490] [2020-10-29 09:57:26,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:26,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:28,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:28,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 09:57:28,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:57:28,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2307 [2020-10-29 09:57:28,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:28,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:57:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:28,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 09:57:28,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:28,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:28,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:28,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:28,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:28,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:28,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:28,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:57:28,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:28,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:28,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:28,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:28,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:28,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:28,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:28,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:28,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:28,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:28,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:28,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:28,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:28,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:28,829 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 470 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:57:28,829 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183926490] [2020-10-29 09:57:28,830 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:28,830 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:57:28,830 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69991703] [2020-10-29 09:57:28,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:57:28,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:28,831 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:57:28,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=301, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:57:28,831 INFO L87 Difference]: Start difference. First operand 395 states and 525 transitions. Second operand 22 states. [2020-10-29 09:57:30,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:30,379 INFO L93 Difference]: Finished difference Result 960 states and 1280 transitions. [2020-10-29 09:57:30,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-29 09:57:30,379 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 76 [2020-10-29 09:57:30,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:30,382 INFO L225 Difference]: With dead ends: 960 [2020-10-29 09:57:30,382 INFO L226 Difference]: Without dead ends: 577 [2020-10-29 09:57:30,384 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 671 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=958, Invalid=2348, Unknown=0, NotChecked=0, Total=3306 [2020-10-29 09:57:30,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 577 states. [2020-10-29 09:57:30,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 577 to 269. [2020-10-29 09:57:30,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-10-29 09:57:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 356 transitions. [2020-10-29 09:57:30,429 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 356 transitions. Word has length 76 [2020-10-29 09:57:30,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:30,430 INFO L481 AbstractCegarLoop]: Abstraction has 269 states and 356 transitions. [2020-10-29 09:57:30,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:57:30,430 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 356 transitions. [2020-10-29 09:57:30,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 09:57:30,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:30,431 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:30,431 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 09:57:30,431 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:30,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:30,432 INFO L82 PathProgramCache]: Analyzing trace with hash -1971654498, now seen corresponding path program 22 times [2020-10-29 09:57:30,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:30,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [332739783] [2020-10-29 09:57:30,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:30,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:30,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:30,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:30,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:30,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:31,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:31,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:31,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 09:57:31,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1499 [2020-10-29 09:57:31,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:31,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:57:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:31,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 09:57:31,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:32,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:32,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:32,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:32,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:32,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:32,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:57:32,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:32,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:32,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:32,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:32,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:32,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:32,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:32,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:32,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:32,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:32,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:32,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:32,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:32,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:32,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:32,405 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 475 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:57:32,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [332739783] [2020-10-29 09:57:32,405 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:32,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:57:32,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104143270] [2020-10-29 09:57:32,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:57:32,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:32,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:57:32,406 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=179, Invalid=327, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:57:32,406 INFO L87 Difference]: Start difference. First operand 269 states and 356 transitions. Second operand 23 states. [2020-10-29 09:57:35,639 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:35,639 INFO L93 Difference]: Finished difference Result 720 states and 951 transitions. [2020-10-29 09:57:35,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2020-10-29 09:57:35,640 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2020-10-29 09:57:35,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:35,642 INFO L225 Difference]: With dead ends: 720 [2020-10-29 09:57:35,642 INFO L226 Difference]: Without dead ends: 463 [2020-10-29 09:57:35,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2923 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=2455, Invalid=6475, Unknown=0, NotChecked=0, Total=8930 [2020-10-29 09:57:35,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 463 states. [2020-10-29 09:57:35,692 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 463 to 395. [2020-10-29 09:57:35,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 395 states. [2020-10-29 09:57:35,694 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 395 states to 395 states and 525 transitions. [2020-10-29 09:57:35,694 INFO L78 Accepts]: Start accepts. Automaton has 395 states and 525 transitions. Word has length 76 [2020-10-29 09:57:35,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:35,694 INFO L481 AbstractCegarLoop]: Abstraction has 395 states and 525 transitions. [2020-10-29 09:57:35,695 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:57:35,695 INFO L276 IsEmpty]: Start isEmpty. Operand 395 states and 525 transitions. [2020-10-29 09:57:35,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 09:57:35,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:35,696 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:35,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 09:57:35,696 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:35,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:35,696 INFO L82 PathProgramCache]: Analyzing trace with hash 1312195548, now seen corresponding path program 23 times [2020-10-29 09:57:35,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:35,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [235204031] [2020-10-29 09:57:35,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:35,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:35,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:35,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:35,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:36,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:36,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 09:57:36,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:57:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 916 [2020-10-29 09:57:36,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:36,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 09:57:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:36,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 09:57:36,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:37,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:37,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:37,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:37,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:37,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:37,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:37,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:57:37,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:37,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:37,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:37,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:37,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:37,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:37,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:37,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:37,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:37,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:37,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:37,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:37,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:37,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:37,109 INFO L134 CoverageAnalysis]: Checked inductivity of 477 backedges. 0 proven. 477 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:37,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [235204031] [2020-10-29 09:57:37,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:37,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 09:57:37,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [49343778] [2020-10-29 09:57:37,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 09:57:37,111 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:37,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 09:57:37,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=292, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:57:37,111 INFO L87 Difference]: Start difference. First operand 395 states and 525 transitions. Second operand 23 states. [2020-10-29 09:57:37,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:37,962 INFO L93 Difference]: Finished difference Result 829 states and 1107 transitions. [2020-10-29 09:57:37,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-29 09:57:37,962 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 76 [2020-10-29 09:57:37,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:37,965 INFO L225 Difference]: With dead ends: 829 [2020-10-29 09:57:37,965 INFO L226 Difference]: Without dead ends: 446 [2020-10-29 09:57:37,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 208 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=636, Invalid=1170, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 09:57:37,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2020-10-29 09:57:38,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 413. [2020-10-29 09:57:38,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 413 states. [2020-10-29 09:57:38,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 413 states to 413 states and 549 transitions. [2020-10-29 09:57:38,020 INFO L78 Accepts]: Start accepts. Automaton has 413 states and 549 transitions. Word has length 76 [2020-10-29 09:57:38,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:38,021 INFO L481 AbstractCegarLoop]: Abstraction has 413 states and 549 transitions. [2020-10-29 09:57:38,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 09:57:38,021 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states and 549 transitions. [2020-10-29 09:57:38,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-29 09:57:38,022 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:38,022 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 17, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:38,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 09:57:38,022 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:38,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:38,023 INFO L82 PathProgramCache]: Analyzing trace with hash -1133895744, now seen corresponding path program 24 times [2020-10-29 09:57:38,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:38,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751585102] [2020-10-29 09:57:38,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:38,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:38,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:38,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:38,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:38,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:38,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:38,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:38,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:39,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:39,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 09:57:39,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 09:57:39,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1396 [2020-10-29 09:57:39,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:39,430 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:57:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:39,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 09:57:39,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:39,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:39,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:39,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:39,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:39,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:39,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:39,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:57:39,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:39,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:39,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:39,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:39,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:39,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:39,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:39,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:39,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:39,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:39,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:39,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:39,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:39,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:39,942 INFO L134 CoverageAnalysis]: Checked inductivity of 532 backedges. 0 proven. 532 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:39,942 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751585102] [2020-10-29 09:57:39,942 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:39,943 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:57:39,943 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941351595] [2020-10-29 09:57:39,943 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:57:39,943 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:39,944 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:57:39,944 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:57:39,944 INFO L87 Difference]: Start difference. First operand 413 states and 549 transitions. Second operand 24 states. [2020-10-29 09:57:41,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:41,064 INFO L93 Difference]: Finished difference Result 849 states and 1133 transitions. [2020-10-29 09:57:41,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 09:57:41,065 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 79 [2020-10-29 09:57:41,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:41,067 INFO L225 Difference]: With dead ends: 849 [2020-10-29 09:57:41,067 INFO L226 Difference]: Without dead ends: 448 [2020-10-29 09:57:41,068 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=699, Invalid=1281, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 09:57:41,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 448 states. [2020-10-29 09:57:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 448 to 431. [2020-10-29 09:57:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-29 09:57:41,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 573 transitions. [2020-10-29 09:57:41,125 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 573 transitions. Word has length 79 [2020-10-29 09:57:41,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:41,125 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 573 transitions. [2020-10-29 09:57:41,125 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:57:41,125 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 573 transitions. [2020-10-29 09:57:41,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 09:57:41,126 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:41,126 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 17, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:41,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 09:57:41,127 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:41,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:41,127 INFO L82 PathProgramCache]: Analyzing trace with hash 70535516, now seen corresponding path program 25 times [2020-10-29 09:57:41,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:41,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [840541092] [2020-10-29 09:57:41,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:41,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:41,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:41,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:43,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:43,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 09:57:43,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 09:57:43,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2167 [2020-10-29 09:57:43,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:43,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:57:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:43,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 09:57:43,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:43,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:43,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:43,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:43,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:43,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:43,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:57:43,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:43,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:43,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:43,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:43,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:43,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:43,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:43,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:43,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:43,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:43,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:43,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:43,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:43,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:43,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:43,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:43,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:43,775 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 583 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-29 09:57:43,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [840541092] [2020-10-29 09:57:43,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:43,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 09:57:43,776 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782047654] [2020-10-29 09:57:43,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 09:57:43,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:43,777 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 09:57:43,777 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=198, Invalid=354, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:57:43,777 INFO L87 Difference]: Start difference. First operand 431 states and 573 transitions. Second operand 24 states. [2020-10-29 09:57:47,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:47,341 INFO L93 Difference]: Finished difference Result 1094 states and 1447 transitions. [2020-10-29 09:57:47,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 80 states. [2020-10-29 09:57:47,342 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 82 [2020-10-29 09:57:47,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:47,344 INFO L225 Difference]: With dead ends: 1094 [2020-10-29 09:57:47,344 INFO L226 Difference]: Without dead ends: 675 [2020-10-29 09:57:47,346 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 98 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3266 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=2724, Invalid=7176, Unknown=0, NotChecked=0, Total=9900 [2020-10-29 09:57:47,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 675 states. [2020-10-29 09:57:47,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 675 to 431. [2020-10-29 09:57:47,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-29 09:57:47,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 573 transitions. [2020-10-29 09:57:47,401 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 573 transitions. Word has length 82 [2020-10-29 09:57:47,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:47,401 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 573 transitions. [2020-10-29 09:57:47,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 09:57:47,401 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 573 transitions. [2020-10-29 09:57:47,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 09:57:47,402 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:47,403 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 18, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:47,403 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 09:57:47,403 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:47,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:47,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1517812386, now seen corresponding path program 26 times [2020-10-29 09:57:47,403 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:47,404 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [979822078] [2020-10-29 09:57:47,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:47,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:47,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:47,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:48,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 09:57:48,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 09:57:48,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 855 [2020-10-29 09:57:48,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:48,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:57:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:48,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 09:57:48,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:48,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:48,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:48,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:48,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:48,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:57:48,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:48,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:48,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:48,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:48,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:48,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:48,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:48,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:48,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:48,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:48,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:48,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:48,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:48,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:48,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:48,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:48,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:48,787 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 588 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-29 09:57:48,787 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [979822078] [2020-10-29 09:57:48,787 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:48,787 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-29 09:57:48,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997883026] [2020-10-29 09:57:48,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-29 09:57:48,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:48,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-29 09:57:48,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=381, Unknown=0, NotChecked=0, Total=600 [2020-10-29 09:57:48,788 INFO L87 Difference]: Start difference. First operand 431 states and 573 transitions. Second operand 25 states. [2020-10-29 09:57:52,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:52,621 INFO L93 Difference]: Finished difference Result 1072 states and 1419 transitions. [2020-10-29 09:57:52,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2020-10-29 09:57:52,622 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 82 [2020-10-29 09:57:52,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:52,625 INFO L225 Difference]: With dead ends: 1072 [2020-10-29 09:57:52,625 INFO L226 Difference]: Without dead ends: 653 [2020-10-29 09:57:52,628 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 102 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3555 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=2983, Invalid=7729, Unknown=0, NotChecked=0, Total=10712 [2020-10-29 09:57:52,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2020-10-29 09:57:52,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 431. [2020-10-29 09:57:52,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-29 09:57:52,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 573 transitions. [2020-10-29 09:57:52,689 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 573 transitions. Word has length 82 [2020-10-29 09:57:52,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:52,689 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 573 transitions. [2020-10-29 09:57:52,689 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-29 09:57:52,690 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 573 transitions. [2020-10-29 09:57:52,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 09:57:52,691 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:52,691 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:52,691 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 09:57:52,691 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:52,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:52,692 INFO L82 PathProgramCache]: Analyzing trace with hash 1766037660, now seen corresponding path program 27 times [2020-10-29 09:57:52,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:52,692 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [63943986] [2020-10-29 09:57:52,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:52,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:52,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:52,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:53,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:53,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 09:57:53,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:57:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-10-29 09:57:53,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:53,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 09:57:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:57:53,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 09:57:53,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:54,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:54,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:54,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:54,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:54,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:54,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:54,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:57:54,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:54,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:54,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:57:54,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:54,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:54,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:54,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:54,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:54,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:57:54,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:54,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:57:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:54,120 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 590 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:57:54,120 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [63943986] [2020-10-29 09:57:54,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:57:54,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 09:57:54,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109573698] [2020-10-29 09:57:54,121 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 09:57:54,121 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:54,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 09:57:54,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=411, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:57:54,122 INFO L87 Difference]: Start difference. First operand 431 states and 573 transitions. Second operand 26 states. [2020-10-29 09:57:56,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:56,756 INFO L93 Difference]: Finished difference Result 1006 states and 1347 transitions. [2020-10-29 09:57:56,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2020-10-29 09:57:56,756 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 82 [2020-10-29 09:57:56,757 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:56,759 INFO L225 Difference]: With dead ends: 1006 [2020-10-29 09:57:56,759 INFO L226 Difference]: Without dead ends: 587 [2020-10-29 09:57:56,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1043 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=1435, Invalid=3535, Unknown=0, NotChecked=0, Total=4970 [2020-10-29 09:57:56,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 587 states. [2020-10-29 09:57:56,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 587 to 431. [2020-10-29 09:57:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 431 states. [2020-10-29 09:57:56,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 431 states to 431 states and 573 transitions. [2020-10-29 09:57:56,814 INFO L78 Accepts]: Start accepts. Automaton has 431 states and 573 transitions. Word has length 82 [2020-10-29 09:57:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:56,814 INFO L481 AbstractCegarLoop]: Abstraction has 431 states and 573 transitions. [2020-10-29 09:57:56,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 09:57:56,814 INFO L276 IsEmpty]: Start isEmpty. Operand 431 states and 573 transitions. [2020-10-29 09:57:56,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-10-29 09:57:56,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:56,815 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:56,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 09:57:56,815 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:56,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:56,815 INFO L82 PathProgramCache]: Analyzing trace with hash -1827865058, now seen corresponding path program 1 times [2020-10-29 09:57:56,816 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:56,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1774741265] [2020-10-29 09:57:56,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:56,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:56,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:56,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:56,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 09:57:56,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 09:57:56,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:56,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:57:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-29 09:57:56,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 09:57:56,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:56,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:57:56,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:56,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:56,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:56,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:57:56,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:56,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:57:56,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:56,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:56,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:56,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:56,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:57:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:56,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:57:56,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:57:56,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:57:56,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 09:57:56,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:57:56,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:57:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:57:56,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:57:56,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:57:56,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:57:56,928 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-29 09:57:56,928 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1774741265] [2020-10-29 09:57:56,928 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:57:56,928 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:57:56,928 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [499730082] [2020-10-29 09:57:56,929 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:57:56,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:57:56,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:57:56,929 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:57:56,929 INFO L87 Difference]: Start difference. First operand 431 states and 573 transitions. Second operand 4 states. [2020-10-29 09:57:57,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:57:57,090 INFO L93 Difference]: Finished difference Result 981 states and 1309 transitions. [2020-10-29 09:57:57,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:57:57,091 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 82 [2020-10-29 09:57:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:57:57,093 INFO L225 Difference]: With dead ends: 981 [2020-10-29 09:57:57,093 INFO L226 Difference]: Without dead ends: 562 [2020-10-29 09:57:57,094 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:57:57,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2020-10-29 09:57:57,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 429. [2020-10-29 09:57:57,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 429 states. [2020-10-29 09:57:57,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 429 states to 429 states and 567 transitions. [2020-10-29 09:57:57,151 INFO L78 Accepts]: Start accepts. Automaton has 429 states and 567 transitions. Word has length 82 [2020-10-29 09:57:57,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:57:57,152 INFO L481 AbstractCegarLoop]: Abstraction has 429 states and 567 transitions. [2020-10-29 09:57:57,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:57:57,152 INFO L276 IsEmpty]: Start isEmpty. Operand 429 states and 567 transitions. [2020-10-29 09:57:57,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 09:57:57,153 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:57:57,153 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:57:57,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 09:57:57,153 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:57:57,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:57:57,154 INFO L82 PathProgramCache]: Analyzing trace with hash -2056661258, now seen corresponding path program 1 times [2020-10-29 09:57:57,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:57:57,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499560059] [2020-10-29 09:57:57,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:57:57,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:57:57,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:57:57,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:02,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:02,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 09:58:02,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 09:58:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 09:58:02,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:02,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:58:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-29 09:58:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 09:58:02,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:02,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:02,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:02,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:02,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:02,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:02,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:02,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:02,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:02,500 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:02,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:02,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:02,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:02,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:02,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:02,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:02,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:02,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:02,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-29 09:58:02,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:02,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:58:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:02,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:58:02,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:02,534 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 58 proven. 0 refuted. 0 times theorem prover too weak. 532 trivial. 0 not checked. [2020-10-29 09:58:02,534 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499560059] [2020-10-29 09:58:02,535 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:58:02,535 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:58:02,535 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918567200] [2020-10-29 09:58:02,535 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:58:02,535 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:02,536 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:58:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:58:02,536 INFO L87 Difference]: Start difference. First operand 429 states and 567 transitions. Second operand 9 states. [2020-10-29 09:58:02,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:02,877 INFO L93 Difference]: Finished difference Result 647 states and 853 transitions. [2020-10-29 09:58:02,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:58:02,877 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 83 [2020-10-29 09:58:02,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:02,880 INFO L225 Difference]: With dead ends: 647 [2020-10-29 09:58:02,880 INFO L226 Difference]: Without dead ends: 502 [2020-10-29 09:58:02,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:58:02,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 502 states. [2020-10-29 09:58:02,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 502 to 501. [2020-10-29 09:58:02,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 501 states. [2020-10-29 09:58:02,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 501 states to 501 states and 642 transitions. [2020-10-29 09:58:02,953 INFO L78 Accepts]: Start accepts. Automaton has 501 states and 642 transitions. Word has length 83 [2020-10-29 09:58:02,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:02,956 INFO L481 AbstractCegarLoop]: Abstraction has 501 states and 642 transitions. [2020-10-29 09:58:02,956 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:58:02,956 INFO L276 IsEmpty]: Start isEmpty. Operand 501 states and 642 transitions. [2020-10-29 09:58:02,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 09:58:02,957 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:02,957 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:02,957 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 09:58:02,957 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:02,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:02,957 INFO L82 PathProgramCache]: Analyzing trace with hash -938395722, now seen corresponding path program 1 times [2020-10-29 09:58:02,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:02,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1772591786] [2020-10-29 09:58:02,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:02,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:03,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:04,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:04,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:04,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:05,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:06,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:07,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:07,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 09:58:07,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 09:58:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 09:58:07,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:07,971 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:58:07,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 09:58:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:08,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:08,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:08,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:08,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:08,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 09:58:08,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:08,088 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:08,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:08,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:08,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:08,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:08,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:08,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:08,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:08,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:08,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:08,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:58:08,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:08,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:08,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:08,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:08,115 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2020-10-29 09:58:08,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1772591786] [2020-10-29 09:58:08,115 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:58:08,116 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 09:58:08,116 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886944718] [2020-10-29 09:58:08,116 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 09:58:08,116 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:08,117 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 09:58:08,117 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 09:58:08,117 INFO L87 Difference]: Start difference. First operand 501 states and 642 transitions. Second operand 6 states. [2020-10-29 09:58:08,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:08,375 INFO L93 Difference]: Finished difference Result 1053 states and 1339 transitions. [2020-10-29 09:58:08,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:58:08,376 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 83 [2020-10-29 09:58:08,376 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:08,379 INFO L225 Difference]: With dead ends: 1053 [2020-10-29 09:58:08,379 INFO L226 Difference]: Without dead ends: 636 [2020-10-29 09:58:08,381 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:58:08,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2020-10-29 09:58:08,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 568. [2020-10-29 09:58:08,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 568 states. [2020-10-29 09:58:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 568 states to 568 states and 712 transitions. [2020-10-29 09:58:08,448 INFO L78 Accepts]: Start accepts. Automaton has 568 states and 712 transitions. Word has length 83 [2020-10-29 09:58:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:08,448 INFO L481 AbstractCegarLoop]: Abstraction has 568 states and 712 transitions. [2020-10-29 09:58:08,448 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 09:58:08,448 INFO L276 IsEmpty]: Start isEmpty. Operand 568 states and 712 transitions. [2020-10-29 09:58:08,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2020-10-29 09:58:08,449 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:08,449 INFO L422 BasicCegarLoop]: trace histogram [40, 40, 40, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:08,450 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 09:58:08,450 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:08,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:08,450 INFO L82 PathProgramCache]: Analyzing trace with hash -739657584, now seen corresponding path program 1 times [2020-10-29 09:58:08,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:08,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624585971] [2020-10-29 09:58:08,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:08,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:08,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:09,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:09,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:09,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:09,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:10,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:10,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:10,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:13,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:13,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:13,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:13,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-29 09:58:13,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 22 [2020-10-29 09:58:13,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 09:58:13,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:13,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:13,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:58:13,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:13,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 09:58:13,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:13,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:13,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:13,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:13,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:13,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:13,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:58:13,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:13,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:13,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:13,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:13,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:13,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:13,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:13,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:13,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:13,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:13,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:13,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:13,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:13,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:13,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:58:13,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:13,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:13,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:13,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:13,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:13,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:13,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:13,592 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:13,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:13,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:13,618 INFO L134 CoverageAnalysis]: Checked inductivity of 2429 backedges. 3 proven. 1246 refuted. 0 times theorem prover too weak. 1180 trivial. 0 not checked. [2020-10-29 09:58:13,619 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624585971] [2020-10-29 09:58:13,619 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:13,619 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 09:58:13,619 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61509346] [2020-10-29 09:58:13,619 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:58:13,619 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:13,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:58:13,620 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:58:13,620 INFO L87 Difference]: Start difference. First operand 568 states and 712 transitions. Second operand 7 states. [2020-10-29 09:58:13,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:13,915 INFO L93 Difference]: Finished difference Result 1120 states and 1409 transitions. [2020-10-29 09:58:13,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 09:58:13,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 154 [2020-10-29 09:58:13,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:13,918 INFO L225 Difference]: With dead ends: 1120 [2020-10-29 09:58:13,918 INFO L226 Difference]: Without dead ends: 703 [2020-10-29 09:58:13,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:58:13,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 703 states. [2020-10-29 09:58:13,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 703 to 635. [2020-10-29 09:58:13,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 635 states. [2020-10-29 09:58:13,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 635 states to 635 states and 782 transitions. [2020-10-29 09:58:13,987 INFO L78 Accepts]: Start accepts. Automaton has 635 states and 782 transitions. Word has length 154 [2020-10-29 09:58:13,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:13,988 INFO L481 AbstractCegarLoop]: Abstraction has 635 states and 782 transitions. [2020-10-29 09:58:13,988 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:58:13,988 INFO L276 IsEmpty]: Start isEmpty. Operand 635 states and 782 transitions. [2020-10-29 09:58:13,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-29 09:58:13,989 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:13,989 INFO L422 BasicCegarLoop]: trace histogram [60, 60, 60, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:13,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 09:58:13,990 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:13,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:13,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1394556534, now seen corresponding path program 2 times [2020-10-29 09:58:13,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:13,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752595803] [2020-10-29 09:58:13,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:14,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:14,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:14,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:14,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:14,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:14,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:14,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:15,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:15,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:15,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:15,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:15,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:15,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:15,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:18,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:19,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 241 [2020-10-29 09:58:19,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 09:58:19,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 09:58:19,040 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:19,040 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:58:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:19,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 227 [2020-10-29 09:58:19,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:19,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:19,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:19,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:19,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:19,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:58:19,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:19,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:19,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:19,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:19,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:19,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:19,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:19,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:19,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:19,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:19,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:19,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:19,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:19,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:19,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:19,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:58:19,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:19,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:19,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:19,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:19,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:19,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:19,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:19,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:58:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:19,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:19,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:19,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:19,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:19,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:19,231 INFO L134 CoverageAnalysis]: Checked inductivity of 5519 backedges. 6 proven. 3739 refuted. 0 times theorem prover too weak. 1774 trivial. 0 not checked. [2020-10-29 09:58:19,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752595803] [2020-10-29 09:58:19,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:19,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 09:58:19,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619570109] [2020-10-29 09:58:19,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 09:58:19,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:19,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 09:58:19,232 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 09:58:19,232 INFO L87 Difference]: Start difference. First operand 635 states and 782 transitions. Second operand 8 states. [2020-10-29 09:58:19,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:19,596 INFO L93 Difference]: Finished difference Result 1187 states and 1479 transitions. [2020-10-29 09:58:19,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:58:19,597 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 225 [2020-10-29 09:58:19,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:19,601 INFO L225 Difference]: With dead ends: 1187 [2020-10-29 09:58:19,601 INFO L226 Difference]: Without dead ends: 770 [2020-10-29 09:58:19,602 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:58:19,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 770 states. [2020-10-29 09:58:19,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 770 to 702. [2020-10-29 09:58:19,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 702 states. [2020-10-29 09:58:19,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 852 transitions. [2020-10-29 09:58:19,672 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 852 transitions. Word has length 225 [2020-10-29 09:58:19,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:19,673 INFO L481 AbstractCegarLoop]: Abstraction has 702 states and 852 transitions. [2020-10-29 09:58:19,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 09:58:19,673 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 852 transitions. [2020-10-29 09:58:19,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 297 [2020-10-29 09:58:19,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:19,676 INFO L422 BasicCegarLoop]: trace histogram [80, 80, 80, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:19,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-29 09:58:19,676 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:19,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:19,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1163958736, now seen corresponding path program 3 times [2020-10-29 09:58:19,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:19,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [484651147] [2020-10-29 09:58:19,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:19,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:19,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:19,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:20,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:20,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:20,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:20,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:20,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:20,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:20,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:20,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:21,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:22,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:22,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:23,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:24,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:24,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:24,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 314 [2020-10-29 09:58:24,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 09:58:24,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 09:58:24,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:24,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:58:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:24,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-29 09:58:24,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:24,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:24,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:24,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:24,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:24,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:24,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:58:24,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:24,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:24,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:24,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:24,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:24,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:24,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:24,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:24,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:24,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:24,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:24,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:24,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:58:24,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:24,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:24,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:24,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:24,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:24,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:24,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:24,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:24,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:24,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:58:24,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:24,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:24,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:24,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:24,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:24,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:24,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:24,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:24,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:24,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:24,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:58:24,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:24,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:24,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:24,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:24,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:24,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:24,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:24,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:24,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:25,023 INFO L134 CoverageAnalysis]: Checked inductivity of 9860 backedges. 9 proven. 7479 refuted. 0 times theorem prover too weak. 2372 trivial. 0 not checked. [2020-10-29 09:58:25,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [484651147] [2020-10-29 09:58:25,023 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:25,023 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 09:58:25,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306566874] [2020-10-29 09:58:25,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:58:25,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:25,025 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:58:25,025 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:58:25,025 INFO L87 Difference]: Start difference. First operand 702 states and 852 transitions. Second operand 9 states. [2020-10-29 09:58:25,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:25,441 INFO L93 Difference]: Finished difference Result 1254 states and 1549 transitions. [2020-10-29 09:58:25,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 09:58:25,442 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 296 [2020-10-29 09:58:25,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:25,446 INFO L225 Difference]: With dead ends: 1254 [2020-10-29 09:58:25,446 INFO L226 Difference]: Without dead ends: 837 [2020-10-29 09:58:25,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:58:25,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 837 states. [2020-10-29 09:58:25,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 837 to 769. [2020-10-29 09:58:25,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 769 states. [2020-10-29 09:58:25,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 922 transitions. [2020-10-29 09:58:25,530 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 922 transitions. Word has length 296 [2020-10-29 09:58:25,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:25,530 INFO L481 AbstractCegarLoop]: Abstraction has 769 states and 922 transitions. [2020-10-29 09:58:25,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:58:25,531 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 922 transitions. [2020-10-29 09:58:25,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 368 [2020-10-29 09:58:25,533 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:25,533 INFO L422 BasicCegarLoop]: trace histogram [100, 100, 100, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:25,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-29 09:58:25,534 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:25,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:25,534 INFO L82 PathProgramCache]: Analyzing trace with hash 1552839990, now seen corresponding path program 4 times [2020-10-29 09:58:25,534 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:25,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [492100353] [2020-10-29 09:58:25,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:25,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:25,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:25,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:25,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:27,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:27,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:27,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:29,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:30,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:30,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 387 [2020-10-29 09:58:30,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 09:58:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 09:58:30,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:30,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:30,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:58:30,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:30,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 373 [2020-10-29 09:58:30,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:30,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:30,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:30,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:30,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:30,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:30,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:30,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:58:30,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:30,810 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:30,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:30,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:30,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:30,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:30,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:30,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:30,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:30,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:30,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:30,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:30,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:30,820 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:30,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:30,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:30,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:58:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:30,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:30,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:30,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:30,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:30,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:58:30,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:30,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:30,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:30,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:30,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:58:30,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:30,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:30,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:30,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:30,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:30,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:58:30,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:30,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:30,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:30,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:30,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:58:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:30,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:30,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:30,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:30,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:30,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:58:30,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:30,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:30,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:30,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:30,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:58:30,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:30,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:30,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:30,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:30,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:30,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:58:30,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:30,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:30,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:58:31,216 INFO L134 CoverageAnalysis]: Checked inductivity of 15452 backedges. 12 proven. 12466 refuted. 0 times theorem prover too weak. 2974 trivial. 0 not checked. [2020-10-29 09:58:31,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [492100353] [2020-10-29 09:58:31,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:31,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 09:58:31,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [522583507] [2020-10-29 09:58:31,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 09:58:31,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:31,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 09:58:31,218 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:58:31,219 INFO L87 Difference]: Start difference. First operand 769 states and 922 transitions. Second operand 10 states. [2020-10-29 09:58:31,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:31,699 INFO L93 Difference]: Finished difference Result 1321 states and 1619 transitions. [2020-10-29 09:58:31,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:58:31,700 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 367 [2020-10-29 09:58:31,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:31,704 INFO L225 Difference]: With dead ends: 1321 [2020-10-29 09:58:31,705 INFO L226 Difference]: Without dead ends: 904 [2020-10-29 09:58:31,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:58:31,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 904 states. [2020-10-29 09:58:31,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 904 to 836. [2020-10-29 09:58:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 836 states. [2020-10-29 09:58:31,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 836 states to 836 states and 992 transitions. [2020-10-29 09:58:31,791 INFO L78 Accepts]: Start accepts. Automaton has 836 states and 992 transitions. Word has length 367 [2020-10-29 09:58:31,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:31,792 INFO L481 AbstractCegarLoop]: Abstraction has 836 states and 992 transitions. [2020-10-29 09:58:31,792 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 09:58:31,792 INFO L276 IsEmpty]: Start isEmpty. Operand 836 states and 992 transitions. [2020-10-29 09:58:31,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 439 [2020-10-29 09:58:31,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:31,796 INFO L422 BasicCegarLoop]: trace histogram [120, 120, 120, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:31,796 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2020-10-29 09:58:31,796 INFO L429 AbstractCegarLoop]: === Iteration 49 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:31,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:31,796 INFO L82 PathProgramCache]: Analyzing trace with hash 54545168, now seen corresponding path program 5 times [2020-10-29 09:58:31,797 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:31,797 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591112345] [2020-10-29 09:58:31,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:32,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:33,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:33,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:33,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:33,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:34,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:36,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:36,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-29 09:58:36,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-29 09:58:36,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 09:58:36,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:36,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:58:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:36,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 446 [2020-10-29 09:58:36,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:37,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:37,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:37,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:37,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:37,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 09:58:37,149 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:37,149 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:37,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:37,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:37,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:37,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:37,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:37,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:37,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:37,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:37,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:37,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:37,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:37,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:37,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:37,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:58:37,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:37,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:37,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:37,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:37,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:37,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:37,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:37,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:37,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:37,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:37,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:58:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:37,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:37,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:37,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:37,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:37,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:37,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:37,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:37,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:37,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:58:37,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:37,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:37,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:37,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:37,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:58:37,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:37,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:37,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:37,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:37,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:37,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:58:37,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:37,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:37,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:37,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:37,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:37,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:37,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:37,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:37,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:37,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:37,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:37,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 09:58:37,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:37,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:37,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:37,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:37,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:58:37,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:37,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:37,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:37,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:37,589 INFO L134 CoverageAnalysis]: Checked inductivity of 22295 backedges. 15 proven. 18700 refuted. 0 times theorem prover too weak. 3580 trivial. 0 not checked. [2020-10-29 09:58:37,590 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591112345] [2020-10-29 09:58:37,590 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:37,590 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:58:37,590 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172043986] [2020-10-29 09:58:37,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:58:37,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:37,591 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:58:37,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:58:37,592 INFO L87 Difference]: Start difference. First operand 836 states and 992 transitions. Second operand 11 states. [2020-10-29 09:58:38,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:38,085 INFO L93 Difference]: Finished difference Result 1388 states and 1689 transitions. [2020-10-29 09:58:38,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 09:58:38,086 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 438 [2020-10-29 09:58:38,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:38,089 INFO L225 Difference]: With dead ends: 1388 [2020-10-29 09:58:38,089 INFO L226 Difference]: Without dead ends: 971 [2020-10-29 09:58:38,090 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:58:38,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 971 states. [2020-10-29 09:58:38,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 971 to 903. [2020-10-29 09:58:38,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 903 states. [2020-10-29 09:58:38,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 903 states to 903 states and 1062 transitions. [2020-10-29 09:58:38,164 INFO L78 Accepts]: Start accepts. Automaton has 903 states and 1062 transitions. Word has length 438 [2020-10-29 09:58:38,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:38,165 INFO L481 AbstractCegarLoop]: Abstraction has 903 states and 1062 transitions. [2020-10-29 09:58:38,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:58:38,165 INFO L276 IsEmpty]: Start isEmpty. Operand 903 states and 1062 transitions. [2020-10-29 09:58:38,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 510 [2020-10-29 09:58:38,168 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:38,169 INFO L422 BasicCegarLoop]: trace histogram [140, 140, 140, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:38,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable48 [2020-10-29 09:58:38,169 INFO L429 AbstractCegarLoop]: === Iteration 50 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:38,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:38,169 INFO L82 PathProgramCache]: Analyzing trace with hash -947201034, now seen corresponding path program 6 times [2020-10-29 09:58:38,169 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:38,169 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249565232] [2020-10-29 09:58:38,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:38,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:38,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:38,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:39,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:39,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:39,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 533 [2020-10-29 09:58:43,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:58:43,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-29 09:58:43,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:58:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:43,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 519 [2020-10-29 09:58:43,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:43,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:43,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:43,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 09:58:43,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,562 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:43,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:43,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:43,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:43,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:43,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:43,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:43,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:43,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:43,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:58:43,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:43,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:43,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:43,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,572 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:43,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:43,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:58:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:43,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:43,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:43,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,577 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:43,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:43,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:43,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:58:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:43,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:43,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:43,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:43,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:43,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:58:43,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:43,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:43,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:43,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:43,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:43,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 09:58:43,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:43,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-29 09:58:43,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:43,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:43,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:43,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:43,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:43,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:43,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:43,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:43,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:43,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:43,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:43,880 INFO L134 CoverageAnalysis]: Checked inductivity of 30389 backedges. 18 proven. 26181 refuted. 0 times theorem prover too weak. 4190 trivial. 0 not checked. [2020-10-29 09:58:43,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249565232] [2020-10-29 09:58:43,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:43,881 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 09:58:43,881 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697394889] [2020-10-29 09:58:43,881 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:58:43,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:43,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:58:43,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:58:43,882 INFO L87 Difference]: Start difference. First operand 903 states and 1062 transitions. Second operand 12 states. [2020-10-29 09:58:44,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:44,441 INFO L93 Difference]: Finished difference Result 1455 states and 1759 transitions. [2020-10-29 09:58:44,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 09:58:44,442 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 509 [2020-10-29 09:58:44,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:44,445 INFO L225 Difference]: With dead ends: 1455 [2020-10-29 09:58:44,445 INFO L226 Difference]: Without dead ends: 1038 [2020-10-29 09:58:44,446 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=279, Unknown=0, NotChecked=0, Total=420 [2020-10-29 09:58:44,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1038 states. [2020-10-29 09:58:44,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1038 to 970. [2020-10-29 09:58:44,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 970 states. [2020-10-29 09:58:44,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 970 states to 970 states and 1132 transitions. [2020-10-29 09:58:44,528 INFO L78 Accepts]: Start accepts. Automaton has 970 states and 1132 transitions. Word has length 509 [2020-10-29 09:58:44,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:44,529 INFO L481 AbstractCegarLoop]: Abstraction has 970 states and 1132 transitions. [2020-10-29 09:58:44,529 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:58:44,529 INFO L276 IsEmpty]: Start isEmpty. Operand 970 states and 1132 transitions. [2020-10-29 09:58:44,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 581 [2020-10-29 09:58:44,534 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:44,534 INFO L422 BasicCegarLoop]: trace histogram [160, 160, 160, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:44,534 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2020-10-29 09:58:44,534 INFO L429 AbstractCegarLoop]: === Iteration 51 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:44,535 INFO L82 PathProgramCache]: Analyzing trace with hash -522400688, now seen corresponding path program 7 times [2020-10-29 09:58:44,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:44,535 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1605292135] [2020-10-29 09:58:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:44,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:44,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:45,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:46,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 606 [2020-10-29 09:58:49,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 09:58:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-29 09:58:49,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:58:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:49,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 592 [2020-10-29 09:58:49,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:49,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:49,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:58:49,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:49,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:49,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:49,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:49,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:58:49,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:49,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:58:49,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:49,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:49,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:49,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:58:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:49,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:49,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:49,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:58:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:49,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:49,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:49,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 09:58:49,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:49,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:49,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:49,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-29 09:58:49,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:49,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:49,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:49,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:49,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 09:58:49,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:49,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:49,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:49,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:49,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:49,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:49,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:49,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:49,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:50,337 INFO L134 CoverageAnalysis]: Checked inductivity of 39734 backedges. 21 proven. 34909 refuted. 0 times theorem prover too weak. 4804 trivial. 0 not checked. [2020-10-29 09:58:50,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1605292135] [2020-10-29 09:58:50,337 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:50,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 09:58:50,338 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568188898] [2020-10-29 09:58:50,338 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 09:58:50,339 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:50,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 09:58:50,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=97, Unknown=0, NotChecked=0, Total=156 [2020-10-29 09:58:50,339 INFO L87 Difference]: Start difference. First operand 970 states and 1132 transitions. Second operand 13 states. [2020-10-29 09:58:50,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:50,930 INFO L93 Difference]: Finished difference Result 1522 states and 1829 transitions. [2020-10-29 09:58:50,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 09:58:50,932 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 580 [2020-10-29 09:58:50,933 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:50,938 INFO L225 Difference]: With dead ends: 1522 [2020-10-29 09:58:50,938 INFO L226 Difference]: Without dead ends: 1105 [2020-10-29 09:58:50,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=171, Invalid=335, Unknown=0, NotChecked=0, Total=506 [2020-10-29 09:58:50,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2020-10-29 09:58:51,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1037. [2020-10-29 09:58:51,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1037 states. [2020-10-29 09:58:51,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1037 states to 1037 states and 1202 transitions. [2020-10-29 09:58:51,035 INFO L78 Accepts]: Start accepts. Automaton has 1037 states and 1202 transitions. Word has length 580 [2020-10-29 09:58:51,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:51,036 INFO L481 AbstractCegarLoop]: Abstraction has 1037 states and 1202 transitions. [2020-10-29 09:58:51,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 09:58:51,036 INFO L276 IsEmpty]: Start isEmpty. Operand 1037 states and 1202 transitions. [2020-10-29 09:58:51,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 652 [2020-10-29 09:58:51,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:51,041 INFO L422 BasicCegarLoop]: trace histogram [180, 180, 180, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:51,041 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2020-10-29 09:58:51,041 INFO L429 AbstractCegarLoop]: === Iteration 52 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:51,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:51,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1170181450, now seen corresponding path program 8 times [2020-10-29 09:58:51,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:51,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470993533] [2020-10-29 09:58:51,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:51,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:51,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:51,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:51,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:51,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:51,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:52,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:52,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:52,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:52,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:52,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:53,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:54,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:55,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 679 [2020-10-29 09:58:56,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-29 09:58:56,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 09:58:56,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,128 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 09:58:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:58:56,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 665 [2020-10-29 09:58:56,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:58:56,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:58:56,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:58:56,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:58:56,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:58:56,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:56,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:56,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:56,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:58:56,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:56,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:58:56,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:56,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:58:56,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:56,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:56,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:56,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:58:56,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:56,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:56,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:58:56,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:56,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:56,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:56,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 09:58:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:56,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:56,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:56,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-29 09:58:56,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:56,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:56,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 09:58:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:56,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:56,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:56,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-29 09:58:56,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:56,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:56,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:58:56,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:58:56,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:58:56,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:58:56,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:58:56,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:58:56,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:58:56,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:58:56,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:58:56,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:58:56,966 INFO L134 CoverageAnalysis]: Checked inductivity of 50330 backedges. 24 proven. 44884 refuted. 0 times theorem prover too weak. 5422 trivial. 0 not checked. [2020-10-29 09:58:56,967 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470993533] [2020-10-29 09:58:56,967 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:58:56,967 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 09:58:56,967 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126781183] [2020-10-29 09:58:56,968 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 09:58:56,968 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:58:56,968 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 09:58:56,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2020-10-29 09:58:56,969 INFO L87 Difference]: Start difference. First operand 1037 states and 1202 transitions. Second operand 14 states. [2020-10-29 09:58:57,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:58:57,642 INFO L93 Difference]: Finished difference Result 1589 states and 1899 transitions. [2020-10-29 09:58:57,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 09:58:57,642 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 651 [2020-10-29 09:58:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:58:57,647 INFO L225 Difference]: With dead ends: 1589 [2020-10-29 09:58:57,647 INFO L226 Difference]: Without dead ends: 1172 [2020-10-29 09:58:57,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=192, Invalid=360, Unknown=0, NotChecked=0, Total=552 [2020-10-29 09:58:57,649 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2020-10-29 09:58:57,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1104. [2020-10-29 09:58:57,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1104 states. [2020-10-29 09:58:57,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1104 states to 1104 states and 1272 transitions. [2020-10-29 09:58:57,717 INFO L78 Accepts]: Start accepts. Automaton has 1104 states and 1272 transitions. Word has length 651 [2020-10-29 09:58:57,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:58:57,718 INFO L481 AbstractCegarLoop]: Abstraction has 1104 states and 1272 transitions. [2020-10-29 09:58:57,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 09:58:57,718 INFO L276 IsEmpty]: Start isEmpty. Operand 1104 states and 1272 transitions. [2020-10-29 09:58:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 723 [2020-10-29 09:58:57,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:58:57,722 INFO L422 BasicCegarLoop]: trace histogram [200, 200, 200, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:58:57,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2020-10-29 09:58:57,723 INFO L429 AbstractCegarLoop]: === Iteration 53 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:58:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:58:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash 243932560, now seen corresponding path program 9 times [2020-10-29 09:58:57,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:58:57,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847739594] [2020-10-29 09:58:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:58:57,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:58:57,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:58,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:58,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:58,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:58,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:58:59,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:00,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:02,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:02,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 752 [2020-10-29 09:59:02,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 09:59:02,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 09:59:02,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:02,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 09:59:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:59:02,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 738 [2020-10-29 09:59:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:03,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:59:03,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:59:03,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:59:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:59:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:03,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:59:03,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:03,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:59:03,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:03,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:59:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:03,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 09:59:03,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:03,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-29 09:59:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 09:59:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:03,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-29 09:59:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:03,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 09:59:03,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:03,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:03,765 INFO L134 CoverageAnalysis]: Checked inductivity of 62177 backedges. 27 proven. 56106 refuted. 0 times theorem prover too weak. 6044 trivial. 0 not checked. [2020-10-29 09:59:03,766 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847739594] [2020-10-29 09:59:03,766 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:03,766 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 09:59:03,766 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543146471] [2020-10-29 09:59:03,767 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 09:59:03,767 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:03,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 09:59:03,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=127, Unknown=0, NotChecked=0, Total=210 [2020-10-29 09:59:03,768 INFO L87 Difference]: Start difference. First operand 1104 states and 1272 transitions. Second operand 15 states. [2020-10-29 09:59:04,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:04,555 INFO L93 Difference]: Finished difference Result 1656 states and 1969 transitions. [2020-10-29 09:59:04,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 09:59:04,557 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 722 [2020-10-29 09:59:04,558 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:04,563 INFO L225 Difference]: With dead ends: 1656 [2020-10-29 09:59:04,563 INFO L226 Difference]: Without dead ends: 1239 [2020-10-29 09:59:04,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=227, Invalid=423, Unknown=0, NotChecked=0, Total=650 [2020-10-29 09:59:04,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1239 states. [2020-10-29 09:59:04,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1239 to 1171. [2020-10-29 09:59:04,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1171 states. [2020-10-29 09:59:04,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1171 states to 1171 states and 1342 transitions. [2020-10-29 09:59:04,673 INFO L78 Accepts]: Start accepts. Automaton has 1171 states and 1342 transitions. Word has length 722 [2020-10-29 09:59:04,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:04,674 INFO L481 AbstractCegarLoop]: Abstraction has 1171 states and 1342 transitions. [2020-10-29 09:59:04,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 09:59:04,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1171 states and 1342 transitions. [2020-10-29 09:59:04,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 794 [2020-10-29 09:59:04,681 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:04,681 INFO L422 BasicCegarLoop]: trace histogram [220, 220, 220, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:04,681 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2020-10-29 09:59:04,681 INFO L429 AbstractCegarLoop]: === Iteration 54 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:04,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:04,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1574648182, now seen corresponding path program 10 times [2020-10-29 09:59:04,682 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:04,682 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622253664] [2020-10-29 09:59:04,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:04,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:05,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:06,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:07,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:07,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:07,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:07,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:09,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:09,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 825 [2020-10-29 09:59:09,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 09:59:09,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5064 [2020-10-29 09:59:09,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:09,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 09:59:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:59:09,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 811 [2020-10-29 09:59:09,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:10,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:59:10,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:59:10,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:59:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:10,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,225 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:59:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:10,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:59:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:10,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:59:10,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:10,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,244 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:59:10,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:10,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,251 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 09:59:10,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:10,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-29 09:59:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:10,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 09:59:10,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:10,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-29 09:59:10,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:10,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 09:59:10,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:10,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,280 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-29 09:59:10,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:10,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:10,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:10,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:10,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:10,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:10,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:10,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:10,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:10,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:10,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:10,934 INFO L134 CoverageAnalysis]: Checked inductivity of 75275 backedges. 30 proven. 68575 refuted. 0 times theorem prover too weak. 6670 trivial. 0 not checked. [2020-10-29 09:59:10,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622253664] [2020-10-29 09:59:10,934 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:10,934 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 09:59:10,934 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592267186] [2020-10-29 09:59:10,935 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 09:59:10,935 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:10,935 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 09:59:10,935 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=145, Unknown=0, NotChecked=0, Total=240 [2020-10-29 09:59:10,936 INFO L87 Difference]: Start difference. First operand 1171 states and 1342 transitions. Second operand 16 states. [2020-10-29 09:59:11,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:11,766 INFO L93 Difference]: Finished difference Result 1723 states and 2039 transitions. [2020-10-29 09:59:11,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 09:59:11,767 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 793 [2020-10-29 09:59:11,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:11,774 INFO L225 Difference]: With dead ends: 1723 [2020-10-29 09:59:11,774 INFO L226 Difference]: Without dead ends: 1306 [2020-10-29 09:59:11,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=279, Invalid=533, Unknown=0, NotChecked=0, Total=812 [2020-10-29 09:59:11,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2020-10-29 09:59:11,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1238. [2020-10-29 09:59:11,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1238 states. [2020-10-29 09:59:11,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1238 states to 1238 states and 1412 transitions. [2020-10-29 09:59:11,925 INFO L78 Accepts]: Start accepts. Automaton has 1238 states and 1412 transitions. Word has length 793 [2020-10-29 09:59:11,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:11,926 INFO L481 AbstractCegarLoop]: Abstraction has 1238 states and 1412 transitions. [2020-10-29 09:59:11,926 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 09:59:11,926 INFO L276 IsEmpty]: Start isEmpty. Operand 1238 states and 1412 transitions. [2020-10-29 09:59:11,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 865 [2020-10-29 09:59:11,936 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:11,937 INFO L422 BasicCegarLoop]: trace histogram [240, 240, 240, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:11,937 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53 [2020-10-29 09:59:11,937 INFO L429 AbstractCegarLoop]: === Iteration 55 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:11,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:11,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1503411920, now seen corresponding path program 11 times [2020-10-29 09:59:11,938 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:11,938 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1378240551] [2020-10-29 09:59:11,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:12,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:12,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:12,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:13,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:13,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:13,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:13,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:14,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 898 [2020-10-29 09:59:17,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 09:59:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5071 [2020-10-29 09:59:17,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 09:59:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:59:17,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 884 [2020-10-29 09:59:17,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:17,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:17,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:59:17,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:59:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:59:17,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:59:17,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:17,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:59:17,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:17,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,578 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:59:17,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:17,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:59:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:17,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 09:59:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:17,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-29 09:59:17,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:17,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 09:59:17,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:17,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-29 09:59:17,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:17,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 09:59:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:17,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-29 09:59:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:17,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:17,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-29 09:59:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:17,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:17,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:17,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:17,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:17,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:17,627 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:17,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:17,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:18,410 INFO L134 CoverageAnalysis]: Checked inductivity of 89624 backedges. 33 proven. 82291 refuted. 0 times theorem prover too weak. 7300 trivial. 0 not checked. [2020-10-29 09:59:18,410 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1378240551] [2020-10-29 09:59:18,411 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:18,411 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 09:59:18,411 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970447114] [2020-10-29 09:59:18,411 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 09:59:18,412 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:18,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 09:59:18,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2020-10-29 09:59:18,412 INFO L87 Difference]: Start difference. First operand 1238 states and 1412 transitions. Second operand 17 states. [2020-10-29 09:59:19,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:19,297 INFO L93 Difference]: Finished difference Result 1790 states and 2109 transitions. [2020-10-29 09:59:19,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 09:59:19,298 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 864 [2020-10-29 09:59:19,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:19,302 INFO L225 Difference]: With dead ends: 1790 [2020-10-29 09:59:19,302 INFO L226 Difference]: Without dead ends: 1373 [2020-10-29 09:59:19,303 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=321, Invalid=609, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:59:19,304 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1373 states. [2020-10-29 09:59:19,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1373 to 1305. [2020-10-29 09:59:19,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1305 states. [2020-10-29 09:59:19,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1305 states to 1305 states and 1482 transitions. [2020-10-29 09:59:19,386 INFO L78 Accepts]: Start accepts. Automaton has 1305 states and 1482 transitions. Word has length 864 [2020-10-29 09:59:19,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:19,386 INFO L481 AbstractCegarLoop]: Abstraction has 1305 states and 1482 transitions. [2020-10-29 09:59:19,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 09:59:19,386 INFO L276 IsEmpty]: Start isEmpty. Operand 1305 states and 1482 transitions. [2020-10-29 09:59:19,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 936 [2020-10-29 09:59:19,396 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:19,397 INFO L422 BasicCegarLoop]: trace histogram [260, 260, 260, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:19,397 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2020-10-29 09:59:19,397 INFO L429 AbstractCegarLoop]: === Iteration 56 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:19,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:19,397 INFO L82 PathProgramCache]: Analyzing trace with hash -1635307466, now seen corresponding path program 12 times [2020-10-29 09:59:19,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:19,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700670240] [2020-10-29 09:59:19,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:19,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:19,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:21,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:22,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:24,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:24,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 971 [2020-10-29 09:59:24,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-29 09:59:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 09:59:24,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:24,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 09:59:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:59:24,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 957 [2020-10-29 09:59:24,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:25,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:25,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:59:25,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:59:25,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:59:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:59:25,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:59:25,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:59:25,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:59:25,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 09:59:25,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,109 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-29 09:59:25,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:25,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 09:59:25,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:25,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-29 09:59:25,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,124 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 09:59:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-29 09:59:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-29 09:59:25,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,140 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:25,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-29 09:59:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:25,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:25,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:25,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:25,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:25,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:25,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:25,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:25,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:26,153 INFO L134 CoverageAnalysis]: Checked inductivity of 105224 backedges. 36 proven. 97254 refuted. 0 times theorem prover too weak. 7934 trivial. 0 not checked. [2020-10-29 09:59:26,154 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700670240] [2020-10-29 09:59:26,154 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:26,154 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 09:59:26,154 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312664288] [2020-10-29 09:59:26,155 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 09:59:26,155 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:26,155 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 09:59:26,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:59:26,155 INFO L87 Difference]: Start difference. First operand 1305 states and 1482 transitions. Second operand 18 states. [2020-10-29 09:59:27,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:27,148 INFO L93 Difference]: Finished difference Result 1857 states and 2179 transitions. [2020-10-29 09:59:27,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:59:27,149 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 935 [2020-10-29 09:59:27,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:27,156 INFO L225 Difference]: With dead ends: 1857 [2020-10-29 09:59:27,156 INFO L226 Difference]: Without dead ends: 1440 [2020-10-29 09:59:27,157 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=366, Invalid=690, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 09:59:27,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1440 states. [2020-10-29 09:59:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1440 to 1372. [2020-10-29 09:59:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1372 states. [2020-10-29 09:59:27,274 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 1552 transitions. [2020-10-29 09:59:27,275 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 1552 transitions. Word has length 935 [2020-10-29 09:59:27,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:27,275 INFO L481 AbstractCegarLoop]: Abstraction has 1372 states and 1552 transitions. [2020-10-29 09:59:27,275 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 09:59:27,275 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 1552 transitions. [2020-10-29 09:59:27,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1007 [2020-10-29 09:59:27,286 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:27,287 INFO L422 BasicCegarLoop]: trace histogram [280, 280, 280, 14, 14, 14, 14, 14, 14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:27,287 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55 [2020-10-29 09:59:27,287 INFO L429 AbstractCegarLoop]: === Iteration 57 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:27,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:27,288 INFO L82 PathProgramCache]: Analyzing trace with hash 1818701840, now seen corresponding path program 13 times [2020-10-29 09:59:27,288 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:27,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1182102539] [2020-10-29 09:59:27,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:27,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:27,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:27,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:28,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:29,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:29,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:29,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:30,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1044 [2020-10-29 09:59:32,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 09:59:32,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 09:59:32,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 09:59:32,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 09:59:32,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1030 [2020-10-29 09:59:32,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:59:32,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:59:32,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:59:32,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:59:32,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:59:32,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:32,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-29 09:59:32,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:32,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,931 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-29 09:59:32,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:32,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-29 09:59:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:32,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-29 09:59:32,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 362 [2020-10-29 09:59:32,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:32,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,950 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 433 [2020-10-29 09:59:32,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:32,955 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,955 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-29 09:59:32,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:32,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 575 [2020-10-29 09:59:32,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:32,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-29 09:59:32,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:32,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-29 09:59:32,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 788 [2020-10-29 09:59:32,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:32,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 859 [2020-10-29 09:59:32,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:32,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 930 [2020-10-29 09:59:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:32,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:32,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:59:32,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 09:59:32,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:59:32,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 09:59:32,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:59:32,998 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:59:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:59:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:59:32,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:59:32,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:59:34,075 INFO L134 CoverageAnalysis]: Checked inductivity of 122075 backedges. 39 proven. 113464 refuted. 0 times theorem prover too weak. 8572 trivial. 0 not checked. [2020-10-29 09:59:34,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1182102539] [2020-10-29 09:59:34,075 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:59:34,075 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 09:59:34,075 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829735204] [2020-10-29 09:59:34,076 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 09:59:34,076 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:59:34,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 09:59:34,076 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=141, Invalid=201, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:59:34,077 INFO L87 Difference]: Start difference. First operand 1372 states and 1552 transitions. Second operand 19 states. [2020-10-29 09:59:35,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:59:35,122 INFO L93 Difference]: Finished difference Result 1924 states and 2249 transitions. [2020-10-29 09:59:35,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:59:35,123 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 1006 [2020-10-29 09:59:35,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:59:35,129 INFO L225 Difference]: With dead ends: 1924 [2020-10-29 09:59:35,129 INFO L226 Difference]: Without dead ends: 1507 [2020-10-29 09:59:35,131 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=397, Invalid=725, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:59:35,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1507 states. [2020-10-29 09:59:35,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1507 to 1439. [2020-10-29 09:59:35,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1439 states. [2020-10-29 09:59:35,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1439 states to 1439 states and 1622 transitions. [2020-10-29 09:59:35,224 INFO L78 Accepts]: Start accepts. Automaton has 1439 states and 1622 transitions. Word has length 1006 [2020-10-29 09:59:35,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:59:35,224 INFO L481 AbstractCegarLoop]: Abstraction has 1439 states and 1622 transitions. [2020-10-29 09:59:35,225 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 09:59:35,225 INFO L276 IsEmpty]: Start isEmpty. Operand 1439 states and 1622 transitions. [2020-10-29 09:59:35,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1078 [2020-10-29 09:59:35,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:59:35,237 INFO L422 BasicCegarLoop]: trace histogram [300, 300, 300, 15, 15, 15, 15, 15, 15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:59:35,238 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56 [2020-10-29 09:59:35,238 INFO L429 AbstractCegarLoop]: === Iteration 58 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:59:35,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:59:35,238 INFO L82 PathProgramCache]: Analyzing trace with hash -344959242, now seen corresponding path program 14 times [2020-10-29 09:59:35,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:59:35,239 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1771311779] [2020-10-29 09:59:35,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:59:35,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:59:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:37,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:37,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:59:38,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking...