/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --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/array-examples/standard_find_ground-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 08:58:39,473 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 08:58:39,476 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 08:58:39,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 08:58:39,510 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 08:58:39,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 08:58:39,514 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 08:58:39,516 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 08:58:39,518 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 08:58:39,519 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 08:58:39,521 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 08:58:39,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 08:58:39,522 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 08:58:39,524 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 08:58:39,525 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 08:58:39,526 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 08:58:39,527 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 08:58:39,530 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 08:58:39,532 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 08:58:39,535 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 08:58:39,537 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 08:58:39,542 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 08:58:39,543 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 08:58:39,547 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 08:58:39,551 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 08:58:39,553 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 08:58:39,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 08:58:39,555 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 08:58:39,555 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 08:58:39,556 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 08:58:39,557 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 08:58:39,558 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 08:58:39,558 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 08:58:39,562 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 08:58:39,564 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 08:58:39,565 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 08:58:39,566 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 08:58:39,566 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 08:58:39,567 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 08:58:39,567 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 08:58:39,568 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 08:58:39,569 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 [2020-10-28 08:58:39,626 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 08:58:39,626 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 08:58:39,631 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 08:58:39,632 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 08:58:39,632 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 08:58:39,632 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 08:58:39,632 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 08:58:39,633 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 08:58:39,633 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 08:58:39,634 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 08:58:39,635 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 08:58:39,635 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 08:58:39,635 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 08:58:39,635 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 08:58:39,636 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 08:58:39,636 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 08:58:39,636 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 08:58:39,636 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 08:58:39,637 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 08:58:39,637 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 08:58:39,637 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 08:58:39,637 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 08:58:39,646 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 08:58:39,647 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 08:58:39,647 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 08:58:39,647 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 08:58:39,647 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 08:58:39,648 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 08:58:39,648 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 08:58:39,648 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 08:58:40,080 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 08:58:40,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 08:58:40,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 08:58:40,113 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 08:58:40,114 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 08:58:40,115 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_find_ground-1.i [2020-10-28 08:58:40,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f608cba63/dc10a40d70134d86b8d35101ef6678ea/FLAGad189e3ef [2020-10-28 08:58:40,928 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 08:58:40,928 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_find_ground-1.i [2020-10-28 08:58:40,936 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f608cba63/dc10a40d70134d86b8d35101ef6678ea/FLAGad189e3ef [2020-10-28 08:58:41,297 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f608cba63/dc10a40d70134d86b8d35101ef6678ea [2020-10-28 08:58:41,305 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 08:58:41,316 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 08:58:41,318 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 08:58:41,319 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 08:58:41,323 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 08:58:41,324 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:58:41" (1/1) ... [2020-10-28 08:58:41,329 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@325426bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41, skipping insertion in model container [2020-10-28 08:58:41,329 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 08:58:41" (1/1) ... [2020-10-28 08:58:41,339 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 08:58:41,360 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 08:58:41,577 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:58:41,586 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 08:58:41,608 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 08:58:41,625 INFO L208 MainTranslator]: Completed translation [2020-10-28 08:58:41,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41 WrapperNode [2020-10-28 08:58:41,626 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 08:58:41,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 08:58:41,627 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 08:58:41,627 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 08:58:41,640 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41" (1/1) ... [2020-10-28 08:58:41,641 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41" (1/1) ... [2020-10-28 08:58:41,649 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41" (1/1) ... [2020-10-28 08:58:41,649 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41" (1/1) ... [2020-10-28 08:58:41,657 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41" (1/1) ... [2020-10-28 08:58:41,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41" (1/1) ... [2020-10-28 08:58:41,664 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41" (1/1) ... [2020-10-28 08:58:41,667 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 08:58:41,668 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 08:58:41,668 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 08:58:41,668 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 08:58:41,669 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41" (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 [2020-10-28 08:58:41,750 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 08:58:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 08:58:41,751 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 08:58:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-28 08:58:41,752 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 08:58:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 08:58:41,752 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 08:58:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-28 08:58:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-28 08:58:41,753 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 08:58:41,754 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 08:58:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 08:58:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-28 08:58:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 08:58:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 08:58:41,755 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 08:58:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 08:58:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 08:58:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 08:58:41,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 08:58:42,151 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 08:58:42,152 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-28 08:58:42,154 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:58:42 BoogieIcfgContainer [2020-10-28 08:58:42,154 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 08:58:42,156 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 08:58:42,156 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 08:58:42,159 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 08:58:42,160 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 08:58:41" (1/3) ... [2020-10-28 08:58:42,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1455625d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:58:42, skipping insertion in model container [2020-10-28 08:58:42,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 08:58:41" (2/3) ... [2020-10-28 08:58:42,161 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1455625d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 08:58:42, skipping insertion in model container [2020-10-28 08:58:42,161 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 08:58:42" (3/3) ... [2020-10-28 08:58:42,163 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_find_ground-1.i [2020-10-28 08:58:42,195 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 08:58:42,200 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 08:58:42,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 08:58:42,242 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 08:58:42,242 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 08:58:42,242 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 08:58:42,242 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 08:58:42,242 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 08:58:42,243 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 08:58:42,243 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 08:58:42,243 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 08:58:42,261 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-28 08:58:42,267 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-28 08:58:42,267 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:42,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:42,269 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:42,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:42,276 INFO L82 PathProgramCache]: Analyzing trace with hash -32220967, now seen corresponding path program 1 times [2020-10-28 08:58:42,285 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:42,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200435001] [2020-10-28 08:58:42,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:42,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:42,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:42,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:42,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:42,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-28 08:58:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 08:58:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 431 [2020-10-28 08:58:42,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:42,859 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:42,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-28 08:58:42,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:42,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 08:58:42,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:42,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:42,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:42,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:42,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:42,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 08:58:42,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:42,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:42,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:42,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:42,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:42,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:42,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:58:42,972 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200435001] [2020-10-28 08:58:42,975 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:58:42,975 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 08:58:42,976 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266580452] [2020-10-28 08:58:42,981 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-28 08:58:42,981 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:42,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-28 08:58:42,997 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:58:42,999 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-28 08:58:43,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:43,092 INFO L93 Difference]: Finished difference Result 53 states and 69 transitions. [2020-10-28 08:58:43,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-28 08:58:43,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-10-28 08:58:43,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:43,102 INFO L225 Difference]: With dead ends: 53 [2020-10-28 08:58:43,102 INFO L226 Difference]: Without dead ends: 24 [2020-10-28 08:58:43,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-28 08:58:43,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-28 08:58:43,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-28 08:58:43,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-28 08:58:43,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 27 transitions. [2020-10-28 08:58:43,148 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 27 transitions. Word has length 16 [2020-10-28 08:58:43,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:43,148 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 27 transitions. [2020-10-28 08:58:43,149 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-28 08:58:43,149 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 27 transitions. [2020-10-28 08:58:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-28 08:58:43,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:43,163 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:43,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 08:58:43,164 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash -1529169096, now seen corresponding path program 1 times [2020-10-28 08:58:43,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:43,165 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845966339] [2020-10-28 08:58:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:43,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:43,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:43,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:43,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-28 08:58:43,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:43,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 220 [2020-10-28 08:58:43,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:43,405 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:58:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:43,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-28 08:58:43,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:43,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:43,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:43,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:43,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:43,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:43,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:43,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:58:43,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:43,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:43,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:43,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:43,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:43,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:43,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 08:58:43,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845966339] [2020-10-28 08:58:43,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:58:43,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-28 08:58:43,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [582627564] [2020-10-28 08:58:43,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:58:43,481 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:43,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:58:43,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:58:43,482 INFO L87 Difference]: Start difference. First operand 24 states and 27 transitions. Second operand 5 states. [2020-10-28 08:58:43,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:43,591 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-10-28 08:58:43,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:58:43,592 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-10-28 08:58:43,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:43,593 INFO L225 Difference]: With dead ends: 41 [2020-10-28 08:58:43,593 INFO L226 Difference]: Without dead ends: 27 [2020-10-28 08:58:43,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:58:43,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-28 08:58:43,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-10-28 08:58:43,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-10-28 08:58:43,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 31 transitions. [2020-10-28 08:58:43,609 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 31 transitions. Word has length 18 [2020-10-28 08:58:43,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:43,609 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 31 transitions. [2020-10-28 08:58:43,609 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:58:43,609 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 31 transitions. [2020-10-28 08:58:43,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-28 08:58:43,610 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:43,611 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:43,611 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 08:58:43,611 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:43,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:43,612 INFO L82 PathProgramCache]: Analyzing trace with hash 1263671326, now seen corresponding path program 1 times [2020-10-28 08:58:43,612 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:43,612 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [725064022] [2020-10-28 08:58:43,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:43,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:43,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:43,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-28 08:58:43,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:43,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-10-28 08:58:43,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:43,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:58:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:43,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 08:58:43,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:43,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:44,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:44,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:44,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:44,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:44,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:44,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 08:58:44,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:44,015 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:44,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:44,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:44,021 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 08:58:44,022 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [725064022] [2020-10-28 08:58:44,022 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 08:58:44,022 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-28 08:58:44,023 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [291221205] [2020-10-28 08:58:44,024 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 08:58:44,024 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:44,024 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 08:58:44,026 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:58:44,027 INFO L87 Difference]: Start difference. First operand 27 states and 31 transitions. Second operand 4 states. [2020-10-28 08:58:44,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:44,122 INFO L93 Difference]: Finished difference Result 48 states and 56 transitions. [2020-10-28 08:58:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-28 08:58:44,123 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 21 [2020-10-28 08:58:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:44,124 INFO L225 Difference]: With dead ends: 48 [2020-10-28 08:58:44,124 INFO L226 Difference]: Without dead ends: 29 [2020-10-28 08:58:44,125 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 08:58:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-28 08:58:44,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 28. [2020-10-28 08:58:44,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-28 08:58:44,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-10-28 08:58:44,133 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 21 [2020-10-28 08:58:44,133 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:44,133 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-10-28 08:58:44,133 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 08:58:44,133 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-10-28 08:58:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-28 08:58:44,134 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:44,134 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] [2020-10-28 08:58:44,135 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 08:58:44,135 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:44,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:44,136 INFO L82 PathProgramCache]: Analyzing trace with hash -62400388, now seen corresponding path program 1 times [2020-10-28 08:58:44,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:44,136 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [931924036] [2020-10-28 08:58:44,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:44,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:44,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:44,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:44,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:44,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-28 08:58:44,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:44,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 499 [2020-10-28 08:58:44,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:44,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-28 08:58:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:44,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-28 08:58:44,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:44,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:44,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:44,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:44,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:44,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:44,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:44,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:58:44,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:44,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:44,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:44,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:44,746 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 08:58:44,752 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [931924036] [2020-10-28 08:58:44,753 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:44,753 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 08:58:44,753 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644421935] [2020-10-28 08:58:44,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 08:58:44,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:44,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 08:58:44,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:58:44,755 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-10-28 08:58:44,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:44,835 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-10-28 08:58:44,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 08:58:44,835 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 23 [2020-10-28 08:58:44,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:44,836 INFO L225 Difference]: With dead ends: 50 [2020-10-28 08:58:44,836 INFO L226 Difference]: Without dead ends: 31 [2020-10-28 08:58:44,837 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 08:58:44,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-28 08:58:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-28 08:58:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-28 08:58:44,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-10-28 08:58:44,844 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 23 [2020-10-28 08:58:44,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:44,845 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-10-28 08:58:44,845 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 08:58:44,845 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-10-28 08:58:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-28 08:58:44,846 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:44,846 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:44,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 08:58:44,846 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:44,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:44,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1187969370, now seen corresponding path program 2 times [2020-10-28 08:58:44,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:44,847 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [259023865] [2020-10-28 08:58:44,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:44,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:44,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:44,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:45,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:45,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-28 08:58:45,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 455 [2020-10-28 08:58:45,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:45,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 08:58:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:45,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:58:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:45,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:45,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:45,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:45,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:45,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:45,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:45,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:58:45,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:45,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:45,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:45,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:45,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:45,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:45,383 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-28 08:58:45,383 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [259023865] [2020-10-28 08:58:45,383 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:45,384 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 08:58:45,384 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908486801] [2020-10-28 08:58:45,384 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 08:58:45,385 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:45,385 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 08:58:45,386 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:58:45,386 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 6 states. [2020-10-28 08:58:45,456 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:45,457 INFO L93 Difference]: Finished difference Result 52 states and 60 transitions. [2020-10-28 08:58:45,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-28 08:58:45,457 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 25 [2020-10-28 08:58:45,457 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:45,458 INFO L225 Difference]: With dead ends: 52 [2020-10-28 08:58:45,458 INFO L226 Difference]: Without dead ends: 33 [2020-10-28 08:58:45,459 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-28 08:58:45,459 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-28 08:58:45,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 32. [2020-10-28 08:58:45,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-28 08:58:45,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-10-28 08:58:45,465 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 25 [2020-10-28 08:58:45,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:45,466 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-10-28 08:58:45,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 08:58:45,466 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-10-28 08:58:45,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-28 08:58:45,467 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:45,467 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:45,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 08:58:45,467 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:45,468 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:45,468 INFO L82 PathProgramCache]: Analyzing trace with hash 202463928, now seen corresponding path program 3 times [2020-10-28 08:58:45,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:45,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2127445361] [2020-10-28 08:58:45,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:45,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:45,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:45,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:46,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:46,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-28 08:58:46,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:46,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 787 [2020-10-28 08:58:46,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:46,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:58:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:46,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-28 08:58:46,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:46,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:46,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:46,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:46,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:46,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:46,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:58:46,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:46,489 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:46,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:46,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:46,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:46,496 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:58:46,497 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2127445361] [2020-10-28 08:58:46,497 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:46,497 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:58:46,497 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137191631] [2020-10-28 08:58:46,498 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:58:46,498 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:46,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:58:46,499 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:58:46,499 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 10 states. [2020-10-28 08:58:46,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:46,837 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-10-28 08:58:46,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:58:46,838 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-10-28 08:58:46,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:46,839 INFO L225 Difference]: With dead ends: 44 [2020-10-28 08:58:46,839 INFO L226 Difference]: Without dead ends: 40 [2020-10-28 08:58:46,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:58:46,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-28 08:58:46,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 38. [2020-10-28 08:58:46,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-28 08:58:46,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 42 transitions. [2020-10-28 08:58:46,849 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 42 transitions. Word has length 27 [2020-10-28 08:58:46,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:46,849 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 42 transitions. [2020-10-28 08:58:46,849 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:58:46,850 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 42 transitions. [2020-10-28 08:58:46,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-28 08:58:46,851 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:46,851 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:46,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 08:58:46,851 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:46,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:46,852 INFO L82 PathProgramCache]: Analyzing trace with hash -1648174318, now seen corresponding path program 1 times [2020-10-28 08:58:46,852 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:46,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1548198914] [2020-10-28 08:58:46,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:46,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:47,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:47,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-28 08:58:47,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:47,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 590 [2020-10-28 08:58:47,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:47,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:58:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:47,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 08:58:47,459 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:47,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:47,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:47,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:47,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:47,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:47,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:58:47,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:47,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:47,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:47,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-28 08:58:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:47,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:47,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:47,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:58:47,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:47,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:58:47,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:47,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:47,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:58:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:47,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:58:47,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:47,565 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-28 08:58:47,566 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1548198914] [2020-10-28 08:58:47,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:47,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:58:47,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649185808] [2020-10-28 08:58:47,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:58:47,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:47,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:58:47,569 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:58:47,570 INFO L87 Difference]: Start difference. First operand 38 states and 42 transitions. Second operand 7 states. [2020-10-28 08:58:47,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:47,715 INFO L93 Difference]: Finished difference Result 59 states and 66 transitions. [2020-10-28 08:58:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:58:47,715 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-10-28 08:58:47,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:47,720 INFO L225 Difference]: With dead ends: 59 [2020-10-28 08:58:47,721 INFO L226 Difference]: Without dead ends: 41 [2020-10-28 08:58:47,721 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:58:47,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-28 08:58:47,742 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-28 08:58:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-28 08:58:47,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 46 transitions. [2020-10-28 08:58:47,745 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 46 transitions. Word has length 35 [2020-10-28 08:58:47,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:47,747 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 46 transitions. [2020-10-28 08:58:47,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:58:47,747 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 46 transitions. [2020-10-28 08:58:47,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-28 08:58:47,750 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:47,750 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:47,751 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 08:58:47,752 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:47,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:47,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2144174840, now seen corresponding path program 2 times [2020-10-28 08:58:47,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:47,754 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1297393719] [2020-10-28 08:58:47,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:47,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:47,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:47,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:48,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:48,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-28 08:58:48,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:48,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 962 [2020-10-28 08:58:48,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:48,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 08:58:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-28 08:58:48,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:48,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:48,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:48,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:48,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:48,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:48,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:48,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:58:48,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:48,817 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:48,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:48,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:48,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-28 08:58:48,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:48,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:48,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:48,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:58:48,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:48,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:58:48,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:48,826 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:58:48,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:48,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:48,831 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 08:58:48,831 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1297393719] [2020-10-28 08:58:48,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:48,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 08:58:48,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201865004] [2020-10-28 08:58:48,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 08:58:48,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:48,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 08:58:48,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:58:48,834 INFO L87 Difference]: Start difference. First operand 41 states and 46 transitions. Second operand 7 states. [2020-10-28 08:58:48,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:48,935 INFO L93 Difference]: Finished difference Result 72 states and 82 transitions. [2020-10-28 08:58:48,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 08:58:48,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-10-28 08:58:48,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:48,937 INFO L225 Difference]: With dead ends: 72 [2020-10-28 08:58:48,937 INFO L226 Difference]: Without dead ends: 44 [2020-10-28 08:58:48,937 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-28 08:58:48,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-28 08:58:48,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2020-10-28 08:58:48,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-28 08:58:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-10-28 08:58:48,945 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 38 [2020-10-28 08:58:48,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:48,945 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-10-28 08:58:48,945 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 08:58:48,945 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-10-28 08:58:48,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-28 08:58:48,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:48,947 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:48,947 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 08:58:48,947 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:48,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:48,947 INFO L82 PathProgramCache]: Analyzing trace with hash -828323238, now seen corresponding path program 3 times [2020-10-28 08:58:48,948 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:48,948 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967498890] [2020-10-28 08:58:48,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:48,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:48,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:49,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:50,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:50,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-28 08:58:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1209 [2020-10-28 08:58:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:50,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 08:58:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-28 08:58:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:58:50,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:50,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:50,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:50,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:50,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:50,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:58:50,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:50,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:50,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:50,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:50,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-28 08:58:50,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:50,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:50,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:50,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:58:50,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:50,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:58:50,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:50,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:58:50,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:50,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:50,272 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 16 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-28 08:58:50,272 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967498890] [2020-10-28 08:58:50,272 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:50,272 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-28 08:58:50,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162511715] [2020-10-28 08:58:50,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 08:58:50,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:50,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 08:58:50,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:58:50,274 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 8 states. [2020-10-28 08:58:50,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:50,374 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-10-28 08:58:50,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-28 08:58:50,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 40 [2020-10-28 08:58:50,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:50,376 INFO L225 Difference]: With dead ends: 74 [2020-10-28 08:58:50,376 INFO L226 Difference]: Without dead ends: 46 [2020-10-28 08:58:50,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 08:58:50,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-10-28 08:58:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 45. [2020-10-28 08:58:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-28 08:58:50,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 50 transitions. [2020-10-28 08:58:50,384 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 50 transitions. Word has length 40 [2020-10-28 08:58:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:50,385 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 50 transitions. [2020-10-28 08:58:50,385 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 08:58:50,385 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 50 transitions. [2020-10-28 08:58:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-28 08:58:50,386 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:50,386 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:50,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 08:58:50,386 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:50,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:50,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1245724356, now seen corresponding path program 4 times [2020-10-28 08:58:50,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:50,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [187098997] [2020-10-28 08:58:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:50,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:50,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:52,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:52,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-28 08:58:52,309 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:52,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1906 [2020-10-28 08:58:52,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:52,310 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:58:52,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:52,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 08:58:52,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:52,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:52,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:52,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:52,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:52,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:52,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:52,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:58:52,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:52,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:52,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:52,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:52,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:52,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-28 08:58:52,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:52,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:52,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:58:52,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 08:58:52,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:52,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:58:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:52,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:58:52,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:52,577 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-28 08:58:52,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [187098997] [2020-10-28 08:58:52,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:52,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:58:52,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683464398] [2020-10-28 08:58:52,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:58:52,580 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:52,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:58:52,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:58:52,581 INFO L87 Difference]: Start difference. First operand 45 states and 50 transitions. Second operand 12 states. [2020-10-28 08:58:53,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:53,212 INFO L93 Difference]: Finished difference Result 67 states and 77 transitions. [2020-10-28 08:58:53,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 08:58:53,212 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-10-28 08:58:53,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:53,213 INFO L225 Difference]: With dead ends: 67 [2020-10-28 08:58:53,213 INFO L226 Difference]: Without dead ends: 50 [2020-10-28 08:58:53,215 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=75, Invalid=345, Unknown=0, NotChecked=0, Total=420 [2020-10-28 08:58:53,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-28 08:58:53,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-28 08:58:53,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-28 08:58:53,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 56 transitions. [2020-10-28 08:58:53,227 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 56 transitions. Word has length 42 [2020-10-28 08:58:53,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:53,227 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 56 transitions. [2020-10-28 08:58:53,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:58:53,227 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 56 transitions. [2020-10-28 08:58:53,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-28 08:58:53,229 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:53,229 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:53,229 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 08:58:53,229 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:53,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:53,230 INFO L82 PathProgramCache]: Analyzing trace with hash -17697650, now seen corresponding path program 5 times [2020-10-28 08:58:53,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:53,230 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276767296] [2020-10-28 08:58:53,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:53,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:53,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:55,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:55,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-28 08:58:55,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:55,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1944 [2020-10-28 08:58:55,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:55,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:58:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:55,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-28 08:58:55,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:55,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:55,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:55,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:55,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:55,371 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:55,371 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:55,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:58:55,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:55,372 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:55,372 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:55,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:55,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:58:55,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:55,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:55,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:55,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:58:55,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:55,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:58:55,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:55,382 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:58:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:55,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:58:55,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 4 proven. 15 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-28 08:58:55,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276767296] [2020-10-28 08:58:55,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:55,393 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:58:55,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177747224] [2020-10-28 08:58:55,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:58:55,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:55,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:58:55,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:58:55,395 INFO L87 Difference]: Start difference. First operand 49 states and 56 transitions. Second operand 12 states. [2020-10-28 08:58:55,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:55,853 INFO L93 Difference]: Finished difference Result 68 states and 76 transitions. [2020-10-28 08:58:55,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:58:55,854 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-28 08:58:55,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:55,856 INFO L225 Difference]: With dead ends: 68 [2020-10-28 08:58:55,856 INFO L226 Difference]: Without dead ends: 64 [2020-10-28 08:58:55,857 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=317, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:58:55,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-28 08:58:55,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 57. [2020-10-28 08:58:55,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-28 08:58:55,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-10-28 08:58:55,866 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 45 [2020-10-28 08:58:55,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:55,866 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-10-28 08:58:55,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:58:55,866 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-10-28 08:58:55,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-28 08:58:55,867 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:55,867 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:55,868 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-28 08:58:55,868 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:55,870 INFO L82 PathProgramCache]: Analyzing trace with hash -2010169624, now seen corresponding path program 6 times [2020-10-28 08:58:55,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:55,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [996758845] [2020-10-28 08:58:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:55,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:55,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:56,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:57,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:57,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-28 08:58:57,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:57,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1306 [2020-10-28 08:58:57,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:57,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-28 08:58:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:57,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-28 08:58:57,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:57,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:57,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:57,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:57,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:57,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:57,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:57,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:58:57,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:57,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:57,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:57,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:57,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:57,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-28 08:58:57,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:57,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:57,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:57,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:58:57,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:57,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:58:57,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:57,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:58:57,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:57,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:57,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-28 08:58:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:57,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:57,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:57,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:58:57,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:57,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:58:57,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:57,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:57,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:58:57,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:57,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:57,305 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 4 proven. 25 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-10-28 08:58:57,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [996758845] [2020-10-28 08:58:57,306 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:57,306 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-28 08:58:57,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [665840520] [2020-10-28 08:58:57,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-28 08:58:57,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:57,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-28 08:58:57,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:58:57,308 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 9 states. [2020-10-28 08:58:57,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:58:57,428 INFO L93 Difference]: Finished difference Result 100 states and 114 transitions. [2020-10-28 08:58:57,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 08:58:57,429 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-10-28 08:58:57,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:58:57,430 INFO L225 Difference]: With dead ends: 100 [2020-10-28 08:58:57,430 INFO L226 Difference]: Without dead ends: 60 [2020-10-28 08:58:57,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-28 08:58:57,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-28 08:58:57,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 59. [2020-10-28 08:58:57,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-28 08:58:57,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 66 transitions. [2020-10-28 08:58:57,438 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 66 transitions. Word has length 53 [2020-10-28 08:58:57,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:58:57,438 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 66 transitions. [2020-10-28 08:58:57,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-28 08:58:57,438 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 66 transitions. [2020-10-28 08:58:57,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-28 08:58:57,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:58:57,440 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:58:57,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-28 08:58:57,440 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:58:57,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:58:57,441 INFO L82 PathProgramCache]: Analyzing trace with hash 660342598, now seen corresponding path program 7 times [2020-10-28 08:58:57,441 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:58:57,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1789424159] [2020-10-28 08:58:57,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:58:57,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:57,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:57,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:59,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:59,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-28 08:58:59,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:58:59,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1651 [2020-10-28 08:58:59,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:59,109 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:58:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:58:59,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-28 08:58:59,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:59,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:58:59,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:59,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:59,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:59,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:58:59,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:59,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:58:59,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:59,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:58:59,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:59,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:58:59,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:59,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-28 08:58:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:59,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:59,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:59,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:58:59,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:59,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:58:59,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:59,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:58:59,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:59,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:58:59,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:59,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:58:59,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:58:59,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:58:59,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:58:59,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:58:59,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:58:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:58:59,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:58:59,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:58:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:58:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:58:59,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:58:59,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:58:59,365 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 8 proven. 22 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-28 08:58:59,366 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1789424159] [2020-10-28 08:58:59,366 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:58:59,366 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:58:59,366 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871709325] [2020-10-28 08:58:59,367 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:58:59,367 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:58:59,370 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:58:59,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:58:59,371 INFO L87 Difference]: Start difference. First operand 59 states and 66 transitions. Second operand 14 states. [2020-10-28 08:59:00,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:00,040 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2020-10-28 08:59:00,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 08:59:00,041 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-10-28 08:59:00,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:00,042 INFO L225 Difference]: With dead ends: 93 [2020-10-28 08:59:00,042 INFO L226 Difference]: Without dead ends: 72 [2020-10-28 08:59:00,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=91, Invalid=415, Unknown=0, NotChecked=0, Total=506 [2020-10-28 08:59:00,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-10-28 08:59:00,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-10-28 08:59:00,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-28 08:59:00,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 70 transitions. [2020-10-28 08:59:00,051 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 70 transitions. Word has length 55 [2020-10-28 08:59:00,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:00,052 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 70 transitions. [2020-10-28 08:59:00,052 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:59:00,052 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 70 transitions. [2020-10-28 08:59:00,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-28 08:59:00,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:00,054 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:00,054 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-28 08:59:00,054 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:00,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:00,057 INFO L82 PathProgramCache]: Analyzing trace with hash 587142968, now seen corresponding path program 8 times [2020-10-28 08:59:00,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:00,058 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [889634494] [2020-10-28 08:59:00,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:00,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:00,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:00,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:02,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:02,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 08:59:02,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:02,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2871 [2020-10-28 08:59:02,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:02,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:59:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:02,952 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-28 08:59:02,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:03,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:03,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:03,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:03,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:03,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:03,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:03,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:03,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:03,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:03,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:03,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:03,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:03,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:03,173 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:59:03,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:03,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:03,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:03,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:03,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:03,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:03,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:03,179 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:03,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:03,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:03,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:03,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:59:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:03,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:03,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:03,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:03,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:03,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:03,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:03,201 INFO L134 CoverageAnalysis]: Checked inductivity of 82 backedges. 6 proven. 33 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2020-10-28 08:59:03,201 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [889634494] [2020-10-28 08:59:03,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:03,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:59:03,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133805974] [2020-10-28 08:59:03,202 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:59:03,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:03,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:59:03,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:59:03,204 INFO L87 Difference]: Start difference. First operand 62 states and 70 transitions. Second operand 14 states. [2020-10-28 08:59:03,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:03,924 INFO L93 Difference]: Finished difference Result 85 states and 95 transitions. [2020-10-28 08:59:03,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 08:59:03,925 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 58 [2020-10-28 08:59:03,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:03,927 INFO L225 Difference]: With dead ends: 85 [2020-10-28 08:59:03,928 INFO L226 Difference]: Without dead ends: 81 [2020-10-28 08:59:03,929 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=563, Unknown=0, NotChecked=0, Total=650 [2020-10-28 08:59:03,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-10-28 08:59:03,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 70. [2020-10-28 08:59:03,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-10-28 08:59:03,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 78 transitions. [2020-10-28 08:59:03,947 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 78 transitions. Word has length 58 [2020-10-28 08:59:03,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:03,948 INFO L481 AbstractCegarLoop]: Abstraction has 70 states and 78 transitions. [2020-10-28 08:59:03,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:59:03,948 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 78 transitions. [2020-10-28 08:59:03,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-28 08:59:03,949 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:03,949 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:03,952 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-28 08:59:03,952 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:03,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:03,953 INFO L82 PathProgramCache]: Analyzing trace with hash -613673070, now seen corresponding path program 9 times [2020-10-28 08:59:03,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:03,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1653053439] [2020-10-28 08:59:03,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:03,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:03,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:04,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:05,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:05,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-28 08:59:05,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:05,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1681 [2020-10-28 08:59:05,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:05,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-28 08:59:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:05,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-28 08:59:05,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:05,734 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:05,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:05,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:05,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:05,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:05,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:05,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:05,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:05,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:05,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:05,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:05,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-28 08:59:05,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:05,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:05,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:05,747 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:05,747 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:05,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:05,748 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:05,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:05,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:05,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-28 08:59:05,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:05,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:05,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:05,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:05,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:05,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:05,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:05,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:05,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:05,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:05,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-28 08:59:05,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:05,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:05,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:05,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:05,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:05,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:05,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:05,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:05,764 INFO L134 CoverageAnalysis]: Checked inductivity of 102 backedges. 6 proven. 36 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-28 08:59:05,765 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1653053439] [2020-10-28 08:59:05,765 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:05,765 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-28 08:59:05,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180392849] [2020-10-28 08:59:05,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-28 08:59:05,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:05,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-28 08:59:05,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:59:05,767 INFO L87 Difference]: Start difference. First operand 70 states and 78 transitions. Second operand 10 states. [2020-10-28 08:59:05,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:05,895 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2020-10-28 08:59:05,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 08:59:05,896 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 66 [2020-10-28 08:59:05,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:05,897 INFO L225 Difference]: With dead ends: 124 [2020-10-28 08:59:05,897 INFO L226 Difference]: Without dead ends: 73 [2020-10-28 08:59:05,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-28 08:59:05,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-28 08:59:05,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 72. [2020-10-28 08:59:05,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-10-28 08:59:05,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 80 transitions. [2020-10-28 08:59:05,914 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 80 transitions. Word has length 66 [2020-10-28 08:59:05,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:05,914 INFO L481 AbstractCegarLoop]: Abstraction has 72 states and 80 transitions. [2020-10-28 08:59:05,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-28 08:59:05,914 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 80 transitions. [2020-10-28 08:59:05,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-10-28 08:59:05,915 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:05,916 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:05,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-28 08:59:05,916 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:05,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:05,917 INFO L82 PathProgramCache]: Analyzing trace with hash 2025084916, now seen corresponding path program 10 times [2020-10-28 08:59:05,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:05,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622007906] [2020-10-28 08:59:05,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:05,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:08,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:08,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 08:59:08,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2271 [2020-10-28 08:59:08,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:08,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 08:59:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:08,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-28 08:59:08,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:08,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:08,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:08,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:08,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:08,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:08,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:08,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:59:08,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:08,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:08,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:08,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:08,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:08,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:08,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:08,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:08,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:08,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:08,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:59:08,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:08,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:08,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:08,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:08,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:08,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:08,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:08,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:08,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:08,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:08,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:08,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:59:08,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:08,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:08,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:08,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:08,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:08,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:08,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:08,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:08,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:08,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:08,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:08,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:08,499 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 7 proven. 47 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-28 08:59:08,499 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622007906] [2020-10-28 08:59:08,501 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:08,501 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 08:59:08,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819547480] [2020-10-28 08:59:08,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 08:59:08,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:08,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 08:59:08,505 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-28 08:59:08,505 INFO L87 Difference]: Start difference. First operand 72 states and 80 transitions. Second operand 16 states. [2020-10-28 08:59:09,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:09,535 INFO L93 Difference]: Finished difference Result 104 states and 116 transitions. [2020-10-28 08:59:09,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:59:09,537 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 68 [2020-10-28 08:59:09,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:09,539 INFO L225 Difference]: With dead ends: 104 [2020-10-28 08:59:09,539 INFO L226 Difference]: Without dead ends: 100 [2020-10-28 08:59:09,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=101, Invalid=769, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:59:09,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-28 08:59:09,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 80. [2020-10-28 08:59:09,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-28 08:59:09,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 88 transitions. [2020-10-28 08:59:09,548 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 88 transitions. Word has length 68 [2020-10-28 08:59:09,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:09,549 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 88 transitions. [2020-10-28 08:59:09,549 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 08:59:09,549 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 88 transitions. [2020-10-28 08:59:09,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-28 08:59:09,549 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:09,550 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:09,550 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-28 08:59:09,550 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:09,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:09,550 INFO L82 PathProgramCache]: Analyzing trace with hash -1440555954, now seen corresponding path program 11 times [2020-10-28 08:59:09,551 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:09,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1411641972] [2020-10-28 08:59:09,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:09,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:09,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:09,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:12,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:12,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-28 08:59:12,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:12,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3027 [2020-10-28 08:59:12,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:12,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:59:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:12,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 08:59:12,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:12,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:12,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:12,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:12,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:12,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:12,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:12,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:12,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:12,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:12,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:12,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:59:12,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-28 08:59:12,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:12,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:12,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:12,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:12,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:12,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:12,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:12,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:12,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:12,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:12,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:12,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:59:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:12,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:12,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:12,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:12,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:12,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:12,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:12,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:12,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:12,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:12,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:59:12,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:59:12,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:12,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:12,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:12,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:12,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:12,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:12,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:12,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:12,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:12,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:12,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:12,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:59:12,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:12,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:12,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:12,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:12,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:12,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:12,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:12,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:12,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:12,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:12,795 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 40 proven. 30 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-28 08:59:12,795 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1411641972] [2020-10-28 08:59:12,795 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:12,796 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:59:12,796 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076619174] [2020-10-28 08:59:12,796 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:59:12,796 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:12,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:59:12,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:59:12,798 INFO L87 Difference]: Start difference. First operand 80 states and 88 transitions. Second operand 13 states. [2020-10-28 08:59:13,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:13,165 INFO L93 Difference]: Finished difference Result 123 states and 140 transitions. [2020-10-28 08:59:13,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:59:13,166 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 76 [2020-10-28 08:59:13,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:13,167 INFO L225 Difference]: With dead ends: 123 [2020-10-28 08:59:13,168 INFO L226 Difference]: Without dead ends: 93 [2020-10-28 08:59:13,168 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:59:13,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-28 08:59:13,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 83. [2020-10-28 08:59:13,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-10-28 08:59:13,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 92 transitions. [2020-10-28 08:59:13,178 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 92 transitions. Word has length 76 [2020-10-28 08:59:13,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:13,178 INFO L481 AbstractCegarLoop]: Abstraction has 83 states and 92 transitions. [2020-10-28 08:59:13,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:59:13,178 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 92 transitions. [2020-10-28 08:59:13,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2020-10-28 08:59:13,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:13,183 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:13,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-28 08:59:13,183 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:13,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:13,184 INFO L82 PathProgramCache]: Analyzing trace with hash 771908376, now seen corresponding path program 12 times [2020-10-28 08:59:13,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:13,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590375353] [2020-10-28 08:59:13,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:13,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:13,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:15,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:15,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-28 08:59:15,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:15,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2368 [2020-10-28 08:59:15,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:15,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 08:59:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:15,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-28 08:59:15,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:15,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:15,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:15,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:15,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:15,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:15,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:15,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:15,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:15,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:15,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:15,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-28 08:59:15,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:15,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:15,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:15,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:15,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:15,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:15,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:15,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:15,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:15,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-28 08:59:15,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:15,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:15,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:15,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:15,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:15,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:15,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:15,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:15,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:15,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:15,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:15,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:15,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-28 08:59:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:15,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:15,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:15,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:15,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:15,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:15,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:15,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:15,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:15,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 08:59:15,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:15,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:15,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:15,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:15,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:15,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:15,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:15,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:15,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:15,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:15,734 INFO L134 CoverageAnalysis]: Checked inductivity of 158 backedges. 8 proven. 49 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2020-10-28 08:59:15,734 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590375353] [2020-10-28 08:59:15,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:15,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-28 08:59:15,735 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095728405] [2020-10-28 08:59:15,737 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-28 08:59:15,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:15,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-28 08:59:15,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:59:15,742 INFO L87 Difference]: Start difference. First operand 83 states and 92 transitions. Second operand 11 states. [2020-10-28 08:59:15,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:15,875 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-10-28 08:59:15,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 08:59:15,876 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 79 [2020-10-28 08:59:15,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:15,877 INFO L225 Difference]: With dead ends: 148 [2020-10-28 08:59:15,877 INFO L226 Difference]: Without dead ends: 86 [2020-10-28 08:59:15,878 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-28 08:59:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-10-28 08:59:15,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 85. [2020-10-28 08:59:15,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-28 08:59:15,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2020-10-28 08:59:15,888 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 79 [2020-10-28 08:59:15,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:15,889 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2020-10-28 08:59:15,889 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-28 08:59:15,889 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2020-10-28 08:59:15,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-28 08:59:15,890 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:15,890 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 6, 6, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:15,890 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-28 08:59:15,890 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:15,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:15,891 INFO L82 PathProgramCache]: Analyzing trace with hash 1326010870, now seen corresponding path program 13 times [2020-10-28 08:59:15,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:15,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [921212568] [2020-10-28 08:59:15,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:15,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:16,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:18,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:18,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 08:59:18,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2860 [2020-10-28 08:59:18,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:18,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:59:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:18,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-28 08:59:18,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:19,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:19,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:19,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:19,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:19,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:19,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:19,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:19,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:19,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:19,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:19,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:19,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:19,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-28 08:59:19,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:19,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:19,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:19,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:19,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:19,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:59:19,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:19,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:19,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:19,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:59:19,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-28 08:59:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:19,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:19,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:19,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:19,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:19,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 08:59:19,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:19,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:19,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:19,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:19,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:19,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:59:19,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-28 08:59:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:19,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:19,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:19,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:19,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:59:19,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:19,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:19,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:19,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-28 08:59:19,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:19,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:19,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:19,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:19,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 08:59:19,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:19,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:19,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:19,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 08:59:19,216 INFO L134 CoverageAnalysis]: Checked inductivity of 173 backedges. 32 proven. 53 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-28 08:59:19,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [921212568] [2020-10-28 08:59:19,217 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:19,217 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:59:19,217 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817614995] [2020-10-28 08:59:19,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:59:19,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:19,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:59:19,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:59:19,219 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand 18 states. [2020-10-28 08:59:20,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:20,092 INFO L93 Difference]: Finished difference Result 127 states and 145 transitions. [2020-10-28 08:59:20,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 08:59:20,093 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 81 [2020-10-28 08:59:20,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:20,094 INFO L225 Difference]: With dead ends: 127 [2020-10-28 08:59:20,094 INFO L226 Difference]: Without dead ends: 98 [2020-10-28 08:59:20,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 154 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2020-10-28 08:59:20,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-10-28 08:59:20,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 88. [2020-10-28 08:59:20,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-10-28 08:59:20,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2020-10-28 08:59:20,103 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 81 [2020-10-28 08:59:20,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:20,103 INFO L481 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2020-10-28 08:59:20,103 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:59:20,104 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2020-10-28 08:59:20,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-28 08:59:20,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:20,105 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:20,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-28 08:59:20,105 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:20,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:20,105 INFO L82 PathProgramCache]: Analyzing trace with hash -858248080, now seen corresponding path program 14 times [2020-10-28 08:59:20,106 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:20,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1801915880] [2020-10-28 08:59:20,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:20,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:20,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:20,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:22,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:22,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-28 08:59:22,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2227 [2020-10-28 08:59:22,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:22,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 08:59:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-28 08:59:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:22,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:22,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:22,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:22,669 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:22,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:22,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:22,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:22,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:22,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:22,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:22,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:22,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:59:22,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:22,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:22,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:22,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:22,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:22,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-28 08:59:22,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:22,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:22,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:22,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:22,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:22,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:59:22,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:22,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:22,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:22,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:22,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:59:22,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:22,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:22,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:22,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:22,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:22,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 08:59:22,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:22,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:22,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:22,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:22,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:22,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:22,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:22,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:22,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:22,726 INFO L134 CoverageAnalysis]: Checked inductivity of 191 backedges. 10 proven. 90 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2020-10-28 08:59:22,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1801915880] [2020-10-28 08:59:22,727 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:22,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 08:59:22,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716373203] [2020-10-28 08:59:22,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 08:59:22,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:22,729 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 08:59:22,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=270, Unknown=0, NotChecked=0, Total=306 [2020-10-28 08:59:22,730 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand 18 states. [2020-10-28 08:59:23,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:23,917 INFO L93 Difference]: Finished difference Result 119 states and 133 transitions. [2020-10-28 08:59:23,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-28 08:59:23,918 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 84 [2020-10-28 08:59:23,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:23,919 INFO L225 Difference]: With dead ends: 119 [2020-10-28 08:59:23,920 INFO L226 Difference]: Without dead ends: 115 [2020-10-28 08:59:23,921 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 160 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=1068, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 08:59:23,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-10-28 08:59:23,929 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 96. [2020-10-28 08:59:23,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-28 08:59:23,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 106 transitions. [2020-10-28 08:59:23,930 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 106 transitions. Word has length 84 [2020-10-28 08:59:23,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:23,931 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 106 transitions. [2020-10-28 08:59:23,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 08:59:23,931 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 106 transitions. [2020-10-28 08:59:23,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 08:59:23,932 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:23,932 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:23,932 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-28 08:59:23,932 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:23,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:23,933 INFO L82 PathProgramCache]: Analyzing trace with hash -1470597942, now seen corresponding path program 15 times [2020-10-28 08:59:23,933 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:23,933 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [642780852] [2020-10-28 08:59:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:23,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:23,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:24,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:26,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:26,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-28 08:59:26,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:26,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2386 [2020-10-28 08:59:26,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:26,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-28 08:59:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 08:59:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:26,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:26,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:26,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:26,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:26,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:26,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:26,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:26,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:26,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:26,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:26,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:26,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 08:59:26,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-28 08:59:26,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:26,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:26,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:26,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:26,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:26,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:26,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:26,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:26,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:26,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:26,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:26,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:26,501 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-28 08:59:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:26,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:26,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:26,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:26,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:26,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:26,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:26,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:26,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-28 08:59:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:26,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:26,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:26,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:26,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:26,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:26,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:26,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:26,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:26,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 08:59:26,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:26,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:26,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:26,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:26,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:26,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:26,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:26,520 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:26,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:26,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:26,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:26,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 08:59:26,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:26,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:26,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:26,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:26,526 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:26,526 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:26,526 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:26,526 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:26,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:26,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:26,536 INFO L134 CoverageAnalysis]: Checked inductivity of 227 backedges. 10 proven. 64 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 08:59:26,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [642780852] [2020-10-28 08:59:26,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:26,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-28 08:59:26,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854844790] [2020-10-28 08:59:26,539 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-28 08:59:26,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:26,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-28 08:59:26,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:59:26,540 INFO L87 Difference]: Start difference. First operand 96 states and 106 transitions. Second operand 12 states. [2020-10-28 08:59:26,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:26,641 INFO L93 Difference]: Finished difference Result 172 states and 192 transitions. [2020-10-28 08:59:26,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 08:59:26,642 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 92 [2020-10-28 08:59:26,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:26,644 INFO L225 Difference]: With dead ends: 172 [2020-10-28 08:59:26,644 INFO L226 Difference]: Without dead ends: 99 [2020-10-28 08:59:26,645 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-28 08:59:26,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2020-10-28 08:59:26,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 98. [2020-10-28 08:59:26,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-10-28 08:59:26,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2020-10-28 08:59:26,663 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 92 [2020-10-28 08:59:26,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:26,664 INFO L481 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2020-10-28 08:59:26,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-28 08:59:26,664 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2020-10-28 08:59:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-28 08:59:26,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:26,667 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:26,668 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-28 08:59:26,668 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash -254206292, now seen corresponding path program 16 times [2020-10-28 08:59:26,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:26,669 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695137385] [2020-10-28 08:59:26,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:26,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:26,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:26,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:29,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:29,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-28 08:59:29,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:29,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2708 [2020-10-28 08:59:29,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:29,410 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-28 08:59:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:29,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-28 08:59:29,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:29,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:29,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:29,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:29,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:29,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:29,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:29,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:29,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:29,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:29,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:29,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-28 08:59:29,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:29,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:29,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:29,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:29,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:29,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:29,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-28 08:59:29,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:29,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:29,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:29,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:29,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:29,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:29,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:29,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:29,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:29,572 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-28 08:59:29,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:29,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:29,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:29,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:29,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:29,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:29,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:29,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:29,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:29,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:29,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 08:59:29,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:29,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:29,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:29,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:29,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:29,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:29,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:29,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:29,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:29,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 08:59:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:29,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:29,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:29,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:29,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:29,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:29,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:29,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:29,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:29,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:29,595 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 10 proven. 81 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2020-10-28 08:59:29,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695137385] [2020-10-28 08:59:29,595 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:29,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-28 08:59:29,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045001492] [2020-10-28 08:59:29,596 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-28 08:59:29,596 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:29,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-28 08:59:29,597 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:59:29,597 INFO L87 Difference]: Start difference. First operand 98 states and 108 transitions. Second operand 13 states. [2020-10-28 08:59:29,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:29,745 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions. [2020-10-28 08:59:29,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-28 08:59:29,746 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 94 [2020-10-28 08:59:29,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:29,747 INFO L225 Difference]: With dead ends: 174 [2020-10-28 08:59:29,747 INFO L226 Difference]: Without dead ends: 101 [2020-10-28 08:59:29,748 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-28 08:59:29,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-10-28 08:59:29,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2020-10-28 08:59:29,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-10-28 08:59:29,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2020-10-28 08:59:29,756 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 94 [2020-10-28 08:59:29,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:29,756 INFO L481 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2020-10-28 08:59:29,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-28 08:59:29,756 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2020-10-28 08:59:29,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-10-28 08:59:29,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:29,757 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:29,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-28 08:59:29,758 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:29,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:29,758 INFO L82 PathProgramCache]: Analyzing trace with hash 467064846, now seen corresponding path program 17 times [2020-10-28 08:59:29,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:29,759 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1443629011] [2020-10-28 08:59:29,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:29,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:30,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:33,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:33,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-28 08:59:33,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:33,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3509 [2020-10-28 08:59:33,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:33,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:33,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 08:59:33,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:33,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-10-28 08:59:33,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:33,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:33,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:33,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:33,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:33,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:33,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:33,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:33,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:33,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:33,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:33,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-28 08:59:33,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:33,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:33,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:33,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:33,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:33,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:33,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:33,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:33,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:33,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:33,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:59:33,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:33,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:33,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:33,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:33,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:33,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:33,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:33,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:33,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:33,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:59:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:33,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:33,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:33,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:33,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:33,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:33,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:33,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:33,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:33,676 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:33,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:59:33,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:33,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:33,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:33,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:33,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:33,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:33,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:33,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:33,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:33,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:33,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 08:59:33,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:33,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:33,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:33,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:33,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:33,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:33,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:33,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:33,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:33,728 INFO L134 CoverageAnalysis]: Checked inductivity of 263 backedges. 50 proven. 73 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2020-10-28 08:59:33,728 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1443629011] [2020-10-28 08:59:33,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:33,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 08:59:33,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061003568] [2020-10-28 08:59:33,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 08:59:33,729 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:33,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 08:59:33,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=310, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:59:33,730 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand 20 states. [2020-10-28 08:59:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:34,746 INFO L93 Difference]: Finished difference Result 146 states and 166 transitions. [2020-10-28 08:59:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-28 08:59:34,747 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 96 [2020-10-28 08:59:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:34,749 INFO L225 Difference]: With dead ends: 146 [2020-10-28 08:59:34,750 INFO L226 Difference]: Without dead ends: 113 [2020-10-28 08:59:34,751 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=205, Invalid=985, Unknown=0, NotChecked=0, Total=1190 [2020-10-28 08:59:34,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-10-28 08:59:34,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 103. [2020-10-28 08:59:34,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-28 08:59:34,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-10-28 08:59:34,768 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 96 [2020-10-28 08:59:34,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:34,769 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-10-28 08:59:34,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 08:59:34,769 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-10-28 08:59:34,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-28 08:59:34,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:34,771 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:34,771 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-28 08:59:34,771 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:34,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:34,772 INFO L82 PathProgramCache]: Analyzing trace with hash 807915596, now seen corresponding path program 18 times [2020-10-28 08:59:34,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:34,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287629584] [2020-10-28 08:59:34,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:34,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:34,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:37,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:37,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-28 08:59:37,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3156 [2020-10-28 08:59:37,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:37,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 08:59:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:37,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-28 08:59:37,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:38,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:38,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:38,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:38,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:38,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:38,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:38,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:38,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:38,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:38,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:59:38,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:38,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:38,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:38,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:38,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:38,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:38,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:38,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:38,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:38,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:38,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:59:38,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:38,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:38,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:38,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:38,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:38,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:38,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:38,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:38,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:38,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:38,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:59:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:38,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:38,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:38,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:38,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:38,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:38,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:38,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:38,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:59:38,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:38,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:38,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:38,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:38,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:38,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:38,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:38,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:38,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:38,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:38,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:38,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:59:38,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:38,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:38,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:38,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:38,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:38,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:38,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:38,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:38,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:38,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:38,396 INFO L134 CoverageAnalysis]: Checked inductivity of 284 backedges. 12 proven. 129 refuted. 0 times theorem prover too weak. 143 trivial. 0 not checked. [2020-10-28 08:59:38,396 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287629584] [2020-10-28 08:59:38,397 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:38,397 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 08:59:38,397 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1598818015] [2020-10-28 08:59:38,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 08:59:38,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:38,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 08:59:38,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-28 08:59:38,398 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 20 states. [2020-10-28 08:59:39,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:39,998 INFO L93 Difference]: Finished difference Result 138 states and 154 transitions. [2020-10-28 08:59:39,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-28 08:59:39,999 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 99 [2020-10-28 08:59:40,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:40,004 INFO L225 Difference]: With dead ends: 138 [2020-10-28 08:59:40,004 INFO L226 Difference]: Without dead ends: 134 [2020-10-28 08:59:40,005 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=139, Invalid=1421, Unknown=0, NotChecked=0, Total=1560 [2020-10-28 08:59:40,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-28 08:59:40,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 111. [2020-10-28 08:59:40,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-28 08:59:40,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2020-10-28 08:59:40,018 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 99 [2020-10-28 08:59:40,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:40,019 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2020-10-28 08:59:40,019 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 08:59:40,019 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2020-10-28 08:59:40,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-10-28 08:59:40,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:40,020 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:40,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-28 08:59:40,022 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:40,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:40,023 INFO L82 PathProgramCache]: Analyzing trace with hash 1243905190, now seen corresponding path program 19 times [2020-10-28 08:59:40,023 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:40,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859185723] [2020-10-28 08:59:40,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:40,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:40,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:43,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:43,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-28 08:59:43,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:43,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3626 [2020-10-28 08:59:43,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:43,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-28 08:59:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:43,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-28 08:59:43,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:43,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:43,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:43,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:43,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:43,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:43,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:43,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:43,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:43,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:43,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-28 08:59:43,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:43,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:43,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:43,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:43,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:59:43,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:43,842 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:43,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:43,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:43,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-28 08:59:43,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:43,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:43,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:43,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-28 08:59:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:43,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:43,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:43,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:43,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:43,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:59:43,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:43,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:43,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:43,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:43,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 08:59:43,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:43,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:43,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:43,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:43,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:43,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:43,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:43,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:43,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:43,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:43,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:43,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:43,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 08:59:43,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:43,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:43,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:43,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:43,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 08:59:43,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:43,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:43,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:43,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:43,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:43,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:43,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:43,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:43,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:43,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 08:59:43,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:43,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:43,870 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 12 proven. 100 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-28 08:59:43,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859185723] [2020-10-28 08:59:43,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:43,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-28 08:59:43,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103151963] [2020-10-28 08:59:43,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-28 08:59:43,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:43,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-28 08:59:43,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:59:43,873 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand 14 states. [2020-10-28 08:59:44,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:44,044 INFO L93 Difference]: Finished difference Result 198 states and 220 transitions. [2020-10-28 08:59:44,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-28 08:59:44,044 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 107 [2020-10-28 08:59:44,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:44,046 INFO L225 Difference]: With dead ends: 198 [2020-10-28 08:59:44,046 INFO L226 Difference]: Without dead ends: 114 [2020-10-28 08:59:44,047 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-28 08:59:44,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-10-28 08:59:44,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 113. [2020-10-28 08:59:44,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-28 08:59:44,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2020-10-28 08:59:44,056 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 107 [2020-10-28 08:59:44,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:44,057 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2020-10-28 08:59:44,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-28 08:59:44,057 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2020-10-28 08:59:44,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-28 08:59:44,058 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:44,058 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 8, 8, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:44,058 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-28 08:59:44,058 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:44,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:44,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1608684164, now seen corresponding path program 20 times [2020-10-28 08:59:44,059 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:44,059 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [967780226] [2020-10-28 08:59:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:44,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:49,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:49,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-28 08:59:49,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:49,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 08:59:49,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:49,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 08:59:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:49,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-28 08:59:49,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:49,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:49,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:49,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:49,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:49,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:49,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:49,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:49,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:49,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:49,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:49,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-28 08:59:49,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:49,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:49,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:49,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:49,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:49,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:49,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:49,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:49,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:49,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:49,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 08:59:49,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:49,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:49,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:49,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 08:59:49,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:49,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:49,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:49,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:49,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:49,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:49,538 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:49,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:49,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 08:59:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:49,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:49,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:49,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:49,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:49,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:49,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:49,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:49,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:49,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:49,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:49,547 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 08:59:49,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:49,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:49,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:49,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:49,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:49,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:49,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:49,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:49,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:49,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 08:59:49,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:49,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:49,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:49,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:49,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:49,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 08:59:49,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:49,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:49,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:49,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:49,593 INFO L134 CoverageAnalysis]: Checked inductivity of 349 backedges. 72 proven. 96 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2020-10-28 08:59:49,594 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [967780226] [2020-10-28 08:59:49,594 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:49,594 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 08:59:49,594 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129950586] [2020-10-28 08:59:49,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 08:59:49,595 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:49,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 08:59:49,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=376, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:59:49,596 INFO L87 Difference]: Start difference. First operand 113 states and 124 transitions. Second operand 22 states. [2020-10-28 08:59:50,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:50,858 INFO L93 Difference]: Finished difference Result 163 states and 185 transitions. [2020-10-28 08:59:50,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-28 08:59:50,858 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 109 [2020-10-28 08:59:50,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:50,861 INFO L225 Difference]: With dead ends: 163 [2020-10-28 08:59:50,861 INFO L226 Difference]: Without dead ends: 126 [2020-10-28 08:59:50,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 293 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=255, Invalid=1227, Unknown=0, NotChecked=0, Total=1482 [2020-10-28 08:59:50,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-10-28 08:59:50,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 116. [2020-10-28 08:59:50,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-28 08:59:50,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 128 transitions. [2020-10-28 08:59:50,873 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 128 transitions. Word has length 109 [2020-10-28 08:59:50,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:50,873 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 128 transitions. [2020-10-28 08:59:50,873 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 08:59:50,873 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 128 transitions. [2020-10-28 08:59:50,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-28 08:59:50,875 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:50,875 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 9, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:50,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-28 08:59:50,875 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:50,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:50,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1937684726, now seen corresponding path program 21 times [2020-10-28 08:59:50,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:50,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1677163762] [2020-10-28 08:59:50,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:50,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:50,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:51,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:55,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:55,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-28 08:59:55,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 08:59:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4278 [2020-10-28 08:59:55,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:55,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 08:59:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 08:59:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-28 08:59:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:55,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 08:59:55,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:55,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:55,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:55,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 08:59:55,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:55,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:55,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:55,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:55,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 08:59:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:55,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 08:59:55,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:55,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 08:59:55,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:55,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:55,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:55,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:55,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:55,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:55,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:55,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:55,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:55,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:55,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:55,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 08:59:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:55,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:55,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:55,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:55,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:55,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:55,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:55,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:55,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:55,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 08:59:55,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:55,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:55,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:55,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:55,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:55,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:55,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:55,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:55,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:55,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 08:59:55,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:55,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:55,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:55,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:55,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:55,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 08:59:55,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:55,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:55,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:55,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:55,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 08:59:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:55,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:55,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:55,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:55,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:55,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:55,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:55,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:55,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:55,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:55,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 08:59:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:55,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:55,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 08:59:55,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 08:59:55,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 08:59:55,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 08:59:55,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 08:59:55,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 08:59:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 08:59:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 08:59:55,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 08:59:55,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 08:59:55,684 INFO L134 CoverageAnalysis]: Checked inductivity of 373 backedges. 14 proven. 175 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-10-28 08:59:55,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1677163762] [2020-10-28 08:59:55,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 08:59:55,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 08:59:55,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216025639] [2020-10-28 08:59:55,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 08:59:55,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 08:59:55,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 08:59:55,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=418, Unknown=0, NotChecked=0, Total=462 [2020-10-28 08:59:55,686 INFO L87 Difference]: Start difference. First operand 116 states and 128 transitions. Second operand 22 states. [2020-10-28 08:59:57,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 08:59:57,639 INFO L93 Difference]: Finished difference Result 155 states and 173 transitions. [2020-10-28 08:59:57,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-28 08:59:57,639 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 112 [2020-10-28 08:59:57,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 08:59:57,642 INFO L225 Difference]: With dead ends: 155 [2020-10-28 08:59:57,642 INFO L226 Difference]: Without dead ends: 151 [2020-10-28 08:59:57,643 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=160, Invalid=1820, Unknown=0, NotChecked=0, Total=1980 [2020-10-28 08:59:57,644 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2020-10-28 08:59:57,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 124. [2020-10-28 08:59:57,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-10-28 08:59:57,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 136 transitions. [2020-10-28 08:59:57,654 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 136 transitions. Word has length 112 [2020-10-28 08:59:57,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 08:59:57,654 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 136 transitions. [2020-10-28 08:59:57,654 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 08:59:57,654 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 136 transitions. [2020-10-28 08:59:57,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2020-10-28 08:59:57,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 08:59:57,656 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 08:59:57,656 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-28 08:59:57,656 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 08:59:57,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 08:59:57,657 INFO L82 PathProgramCache]: Analyzing trace with hash -747481756, now seen corresponding path program 22 times [2020-10-28 08:59:57,657 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 08:59:57,657 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1736036176] [2020-10-28 08:59:57,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 08:59:57,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 08:59:57,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 08:59:57,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4831 [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-28 09:00:02,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:02,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:02,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:02,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:02,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-28 09:00:02,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:02,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:02,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:02,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:02,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:02,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:02,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:02,687 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:02,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:02,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:02,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-28 09:00:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:02,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:02,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:02,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:02,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:02,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:02,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:02,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:02,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:02,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:02,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-28 09:00:02,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:02,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:02,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:02,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:02,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:02,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:02,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:02,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:00:02,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:02,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:02,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:00:02,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:02,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:02,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:02,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:00:02,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:02,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:02,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:02,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:02,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:00:02,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:02,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:02,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:02,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:00:02,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:02,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:02,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:02,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:02,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:02,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:02,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:02,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:02,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:02,720 INFO L134 CoverageAnalysis]: Checked inductivity of 425 backedges. 14 proven. 121 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-28 09:00:02,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1736036176] [2020-10-28 09:00:02,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:02,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-28 09:00:02,721 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780369829] [2020-10-28 09:00:02,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-28 09:00:02,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:02,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-28 09:00:02,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:00:02,722 INFO L87 Difference]: Start difference. First operand 124 states and 136 transitions. Second operand 15 states. [2020-10-28 09:00:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:02,873 INFO L93 Difference]: Finished difference Result 222 states and 246 transitions. [2020-10-28 09:00:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-28 09:00:02,873 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 120 [2020-10-28 09:00:02,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:02,875 INFO L225 Difference]: With dead ends: 222 [2020-10-28 09:00:02,875 INFO L226 Difference]: Without dead ends: 127 [2020-10-28 09:00:02,876 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-28 09:00:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-10-28 09:00:02,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 126. [2020-10-28 09:00:02,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-28 09:00:02,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2020-10-28 09:00:02,886 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 120 [2020-10-28 09:00:02,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:02,887 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2020-10-28 09:00:02,887 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-28 09:00:02,887 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2020-10-28 09:00:02,888 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2020-10-28 09:00:02,888 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:02,888 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:02,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-28 09:00:02,889 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:02,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:02,889 INFO L82 PathProgramCache]: Analyzing trace with hash -1840039866, now seen corresponding path program 23 times [2020-10-28 09:00:02,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:02,889 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1941334891] [2020-10-28 09:00:02,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:02,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:02,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:03,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:07,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:07,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 09:00:07,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:07,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-28 09:00:07,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:07,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-28 09:00:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:00:07,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-28 09:00:07,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:08,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:08,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:08,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:08,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:08,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:08,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:08,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:08,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:08,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:08,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:08,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:08,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:08,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:08,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:00:08,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:08,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:08,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:08,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:08,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:08,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:08,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:08,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:08,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:08,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:08,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:00:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:08,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:08,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:08,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:08,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:08,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:08,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:08,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:08,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:08,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:08,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:08,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:08,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:00:08,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:08,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:08,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:08,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:08,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:08,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:08,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:08,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:08,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:08,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:08,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:00:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:08,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:08,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:08,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:08,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:08,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:08,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:08,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:08,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:08,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:08,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:00:08,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:08,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:08,490 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:08,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:08,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:08,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:08,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:08,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:08,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:08,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:08,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:00:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:08,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:08,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:08,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:08,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:08,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:08,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:08,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:08,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:08,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 09:00:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:08,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:08,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:08,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:08,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:08,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:08,499 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:08,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:08,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:08,525 INFO L134 CoverageAnalysis]: Checked inductivity of 448 backedges. 15 proven. 205 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2020-10-28 09:00:08,526 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1941334891] [2020-10-28 09:00:08,526 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:08,526 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-28 09:00:08,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234353395] [2020-10-28 09:00:08,527 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-28 09:00:08,527 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:08,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-28 09:00:08,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-28 09:00:08,528 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand 24 states. [2020-10-28 09:00:10,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:10,971 INFO L93 Difference]: Finished difference Result 174 states and 194 transitions. [2020-10-28 09:00:10,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:00:10,971 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 122 [2020-10-28 09:00:10,972 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:10,974 INFO L225 Difference]: With dead ends: 174 [2020-10-28 09:00:10,974 INFO L226 Difference]: Without dead ends: 170 [2020-10-28 09:00:10,976 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=177, Invalid=2273, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 09:00:10,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-28 09:00:10,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 134. [2020-10-28 09:00:10,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-28 09:00:10,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 146 transitions. [2020-10-28 09:00:10,986 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 146 transitions. Word has length 122 [2020-10-28 09:00:10,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:10,987 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 146 transitions. [2020-10-28 09:00:10,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-28 09:00:10,987 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 146 transitions. [2020-10-28 09:00:10,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2020-10-28 09:00:10,988 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:10,988 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:10,989 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-28 09:00:10,989 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:10,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:10,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1530049888, now seen corresponding path program 24 times [2020-10-28 09:00:10,989 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:10,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [986644297] [2020-10-28 09:00:10,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:11,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:11,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:15,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:15,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-10-28 09:00:15,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4832 [2020-10-28 09:00:15,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:15,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:00:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:00:15,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-28 09:00:15,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:16,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:16,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:16,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:16,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:16,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:16,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:16,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:16,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-28 09:00:16,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:16,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:16,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:16,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:16,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:16,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:16,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:16,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:00:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:16,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:00:16,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:16,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:16,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:16,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:16,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:16,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:16,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:16,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:16,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:00:16,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:16,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:16,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:16,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:16,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:16,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:16,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:16,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:00:16,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:16,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:16,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:16,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:16,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:16,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:16,162 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:16,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:16,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:00:16,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:16,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:16,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:16,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:16,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:16,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:16,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:16,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:16,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 09:00:16,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:16,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:16,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:16,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:16,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:16,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:16,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:16,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:16,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:00:16,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:16,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:16,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:16,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:16,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:16,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:16,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:16,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:16,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:16,197 INFO L134 CoverageAnalysis]: Checked inductivity of 508 backedges. 144 proven. 108 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-10-28 09:00:16,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [986644297] [2020-10-28 09:00:16,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:16,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:00:16,197 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2104064298] [2020-10-28 09:00:16,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:00:16,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:16,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:00:16,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=309, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:00:16,199 INFO L87 Difference]: Start difference. First operand 134 states and 146 transitions. Second operand 21 states. [2020-10-28 09:00:16,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:16,815 INFO L93 Difference]: Finished difference Result 193 states and 218 transitions. [2020-10-28 09:00:16,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:00:16,816 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 130 [2020-10-28 09:00:16,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:16,819 INFO L225 Difference]: With dead ends: 193 [2020-10-28 09:00:16,819 INFO L226 Difference]: Without dead ends: 147 [2020-10-28 09:00:16,820 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=219, Invalid=651, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:00:16,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-28 09:00:16,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 137. [2020-10-28 09:00:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-28 09:00:16,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 150 transitions. [2020-10-28 09:00:16,832 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 150 transitions. Word has length 130 [2020-10-28 09:00:16,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:16,832 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 150 transitions. [2020-10-28 09:00:16,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:00:16,832 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 150 transitions. [2020-10-28 09:00:16,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-28 09:00:16,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:16,834 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:16,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-28 09:00:16,834 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:16,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:16,835 INFO L82 PathProgramCache]: Analyzing trace with hash -141998250, now seen corresponding path program 25 times [2020-10-28 09:00:16,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:16,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [54945724] [2020-10-28 09:00:16,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:17,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:21,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:21,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 159 [2020-10-28 09:00:21,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:21,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:00:21,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:21,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-28 09:00:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:00:21,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-28 09:00:21,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:22,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:22,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:22,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:22,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:22,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:22,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:22,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-28 09:00:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:22,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:22,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:22,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:00:22,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:22,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:22,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:22,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-28 09:00:22,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:22,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:22,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:22,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:00:22,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:22,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:22,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-28 09:00:22,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:22,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 09:00:22,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 09:00:22,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:22,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:22,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:00:22,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:22,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:22,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:22,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 09:00:22,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:22,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:22,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:22,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:22,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:22,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:22,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 09:00:22,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:22,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:22,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:22,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:22,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:22,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:22,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,106 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 09:00:22,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:22,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:22,119 INFO L134 CoverageAnalysis]: Checked inductivity of 535 backedges. 16 proven. 144 refuted. 0 times theorem prover too weak. 375 trivial. 0 not checked. [2020-10-28 09:00:22,119 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [54945724] [2020-10-28 09:00:22,120 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:22,120 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-28 09:00:22,120 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820208189] [2020-10-28 09:00:22,120 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-28 09:00:22,120 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:22,121 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-28 09:00:22,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:00:22,121 INFO L87 Difference]: Start difference. First operand 137 states and 150 transitions. Second operand 16 states. [2020-10-28 09:00:22,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:22,274 INFO L93 Difference]: Finished difference Result 246 states and 272 transitions. [2020-10-28 09:00:22,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-28 09:00:22,275 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 133 [2020-10-28 09:00:22,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:22,277 INFO L225 Difference]: With dead ends: 246 [2020-10-28 09:00:22,277 INFO L226 Difference]: Without dead ends: 140 [2020-10-28 09:00:22,278 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-28 09:00:22,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-10-28 09:00:22,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 139. [2020-10-28 09:00:22,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-28 09:00:22,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 152 transitions. [2020-10-28 09:00:22,288 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 152 transitions. Word has length 133 [2020-10-28 09:00:22,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:22,289 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 152 transitions. [2020-10-28 09:00:22,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-28 09:00:22,289 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 152 transitions. [2020-10-28 09:00:22,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-28 09:00:22,290 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:22,291 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 10, 10, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:22,291 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-28 09:00:22,291 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:22,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:22,291 INFO L82 PathProgramCache]: Analyzing trace with hash -1770806348, now seen corresponding path program 26 times [2020-10-28 09:00:22,292 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:22,292 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2097784318] [2020-10-28 09:00:22,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:22,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:22,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:22,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-28 09:00:27,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:00:27,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:00:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:00:27,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-28 09:00:27,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:27,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:27,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:27,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-28 09:00:27,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:27,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-28 09:00:27,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:27,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-28 09:00:27,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:27,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-28 09:00:27,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,959 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:27,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:27,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:27,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-28 09:00:27,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:27,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:27,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,969 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:27,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-28 09:00:27,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:27,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:27,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:27,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-28 09:00:27,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:27,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:27,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,984 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:27,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:27,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:27,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-28 09:00:27,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:27,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:27,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:27,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:27,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:27,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:00:27,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:27,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:27,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:27,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:27,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:28,064 INFO L134 CoverageAnalysis]: Checked inductivity of 560 backedges. 128 proven. 151 refuted. 0 times theorem prover too weak. 281 trivial. 0 not checked. [2020-10-28 09:00:28,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2097784318] [2020-10-28 09:00:28,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:28,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:00:28,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1631913180] [2020-10-28 09:00:28,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:00:28,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:28,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:00:28,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:00:28,066 INFO L87 Difference]: Start difference. First operand 139 states and 152 transitions. Second operand 26 states. [2020-10-28 09:00:29,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:29,625 INFO L93 Difference]: Finished difference Result 197 states and 223 transitions. [2020-10-28 09:00:29,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-28 09:00:29,626 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 135 [2020-10-28 09:00:29,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:29,629 INFO L225 Difference]: With dead ends: 197 [2020-10-28 09:00:29,629 INFO L226 Difference]: Without dead ends: 152 [2020-10-28 09:00:29,631 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=368, Invalid=1702, Unknown=0, NotChecked=0, Total=2070 [2020-10-28 09:00:29,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-10-28 09:00:29,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 142. [2020-10-28 09:00:29,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-10-28 09:00:29,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 156 transitions. [2020-10-28 09:00:29,641 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 156 transitions. Word has length 135 [2020-10-28 09:00:29,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:29,641 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 156 transitions. [2020-10-28 09:00:29,641 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:00:29,641 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 156 transitions. [2020-10-28 09:00:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-10-28 09:00:29,642 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:29,643 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 11, 10, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:29,643 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-28 09:00:29,643 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:29,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:29,643 INFO L82 PathProgramCache]: Analyzing trace with hash 77686210, now seen corresponding path program 27 times [2020-10-28 09:00:29,644 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:29,644 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [612916064] [2020-10-28 09:00:29,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:29,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:29,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:29,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:34,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:34,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-28 09:00:34,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:00:34,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:34,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-28 09:00:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:00:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-28 09:00:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:35,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:35,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:35,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:35,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:35,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:35,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:35,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:00:35,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:35,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:35,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:35,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:35,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:35,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:35,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:35,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:35,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:35,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:00:35,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:35,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:35,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:35,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:35,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:35,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:35,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:35,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:35,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:00:35,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:35,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:35,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:35,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:35,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:35,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:35,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:35,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:35,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:00:35,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:35,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:35,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:35,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:35,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:35,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:35,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:35,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:35,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:35,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:00:35,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:35,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:35,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:35,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:35,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:35,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:35,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:35,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:35,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,343 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 09:00:35,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:35,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:35,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:35,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:35,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:35,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:35,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:35,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:00:35,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:35,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:35,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:35,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:35,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:35,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:35,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:35,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:35,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:35,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:35,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:35,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 09:00:35,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:35,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:35,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:35,358 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:35,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:35,358 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:35,358 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:35,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:35,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:35,359 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:35,416 INFO L134 CoverageAnalysis]: Checked inductivity of 590 backedges. 18 proven. 288 refuted. 0 times theorem prover too weak. 284 trivial. 0 not checked. [2020-10-28 09:00:35,416 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [612916064] [2020-10-28 09:00:35,416 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:35,416 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-28 09:00:35,416 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146085628] [2020-10-28 09:00:35,417 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-28 09:00:35,417 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:35,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-28 09:00:35,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-28 09:00:35,418 INFO L87 Difference]: Start difference. First operand 142 states and 156 transitions. Second operand 26 states. [2020-10-28 09:00:38,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:38,315 INFO L93 Difference]: Finished difference Result 189 states and 211 transitions. [2020-10-28 09:00:38,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-10-28 09:00:38,316 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 138 [2020-10-28 09:00:38,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:38,318 INFO L225 Difference]: With dead ends: 189 [2020-10-28 09:00:38,318 INFO L226 Difference]: Without dead ends: 185 [2020-10-28 09:00:38,320 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 419 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=196, Invalid=2774, Unknown=0, NotChecked=0, Total=2970 [2020-10-28 09:00:38,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2020-10-28 09:00:38,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 150. [2020-10-28 09:00:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 150 states. [2020-10-28 09:00:38,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 150 states to 150 states and 164 transitions. [2020-10-28 09:00:38,331 INFO L78 Accepts]: Start accepts. Automaton has 150 states and 164 transitions. Word has length 138 [2020-10-28 09:00:38,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:38,331 INFO L481 AbstractCegarLoop]: Abstraction has 150 states and 164 transitions. [2020-10-28 09:00:38,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-28 09:00:38,332 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states and 164 transitions. [2020-10-28 09:00:38,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2020-10-28 09:00:38,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:38,333 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:38,333 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-28 09:00:38,333 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:38,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:38,334 INFO L82 PathProgramCache]: Analyzing trace with hash -1044104164, now seen corresponding path program 28 times [2020-10-28 09:00:38,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:38,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588848295] [2020-10-28 09:00:38,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:38,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:38,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:38,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-28 09:00:43,365 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-28 09:00:43,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-28 09:00:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:00:43,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-28 09:00:43,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:43,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:43,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:43,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:43,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,603 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:43,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:43,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-28 09:00:43,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:43,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:43,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:43,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:00:43,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-28 09:00:43,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:43,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:43,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:43,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:00:43,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-28 09:00:43,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:43,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:43,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:43,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:00:43,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-28 09:00:43,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:43,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:43,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:43,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:00:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-28 09:00:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:43,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:43,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:43,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:00:43,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-28 09:00:43,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:43,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:43,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:43,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:00:43,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-28 09:00:43,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:43,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:43,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:43,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 09:00:43,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-28 09:00:43,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:43,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:43,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:43,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:00:43,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-28 09:00:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:43,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:43,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:43,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:43,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:43,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:43,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:43,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:43,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 09:00:43,691 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 18 proven. 169 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-28 09:00:43,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588848295] [2020-10-28 09:00:43,698 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:43,698 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-28 09:00:43,698 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250023672] [2020-10-28 09:00:43,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-28 09:00:43,699 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:43,699 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-28 09:00:43,700 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:00:43,700 INFO L87 Difference]: Start difference. First operand 150 states and 164 transitions. Second operand 17 states. [2020-10-28 09:00:43,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:43,950 INFO L93 Difference]: Finished difference Result 270 states and 298 transitions. [2020-10-28 09:00:43,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-28 09:00:43,950 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 146 [2020-10-28 09:00:43,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:43,952 INFO L225 Difference]: With dead ends: 270 [2020-10-28 09:00:43,952 INFO L226 Difference]: Without dead ends: 153 [2020-10-28 09:00:43,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-28 09:00:43,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-28 09:00:43,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 152. [2020-10-28 09:00:43,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 152 states. [2020-10-28 09:00:43,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 166 transitions. [2020-10-28 09:00:43,971 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 166 transitions. Word has length 146 [2020-10-28 09:00:43,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:43,972 INFO L481 AbstractCegarLoop]: Abstraction has 152 states and 166 transitions. [2020-10-28 09:00:43,972 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-28 09:00:43,972 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 166 transitions. [2020-10-28 09:00:43,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2020-10-28 09:00:43,973 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:43,974 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:43,974 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-28 09:00:43,974 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:43,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:43,975 INFO L82 PathProgramCache]: Analyzing trace with hash -755013506, now seen corresponding path program 29 times [2020-10-28 09:00:43,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:43,975 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1293855691] [2020-10-28 09:00:43,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:44,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:44,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-28 09:00:49,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-28 09:00:49,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-28 09:00:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:00:49,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-28 09:00:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:49,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:49,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:00:49,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:49,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-28 09:00:49,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:49,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:49,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:49,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-28 09:00:49,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:49,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:49,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,282 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:49,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-28 09:00:49,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:49,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:49,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-28 09:00:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:49,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:49,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:49,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-28 09:00:49,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:49,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:49,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:49,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-28 09:00:49,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:49,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:49,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,300 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:49,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-28 09:00:49,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:49,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:49,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,304 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:49,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-28 09:00:49,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:49,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:49,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,308 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:49,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:49,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-28 09:00:49,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:49,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:49,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:49,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:49,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:00:49,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:49,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:49,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:00:49,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:49,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 09:00:49,342 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 18 proven. 196 refuted. 0 times theorem prover too weak. 471 trivial. 0 not checked. [2020-10-28 09:00:49,345 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1293855691] [2020-10-28 09:00:49,345 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:49,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-28 09:00:49,346 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701941221] [2020-10-28 09:00:49,353 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-28 09:00:49,353 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:49,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-28 09:00:49,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:00:49,356 INFO L87 Difference]: Start difference. First operand 152 states and 166 transitions. Second operand 18 states. [2020-10-28 09:00:49,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:49,535 INFO L93 Difference]: Finished difference Result 272 states and 300 transitions. [2020-10-28 09:00:49,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-28 09:00:49,535 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 148 [2020-10-28 09:00:49,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:49,537 INFO L225 Difference]: With dead ends: 272 [2020-10-28 09:00:49,537 INFO L226 Difference]: Without dead ends: 155 [2020-10-28 09:00:49,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-28 09:00:49,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 155 states. [2020-10-28 09:00:49,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 155 to 154. [2020-10-28 09:00:49,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-10-28 09:00:49,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 168 transitions. [2020-10-28 09:00:49,552 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 168 transitions. Word has length 148 [2020-10-28 09:00:49,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:49,553 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 168 transitions. [2020-10-28 09:00:49,553 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-28 09:00:49,553 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 168 transitions. [2020-10-28 09:00:49,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-28 09:00:49,554 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:49,555 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 11, 11, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:49,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-28 09:00:49,555 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:49,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:49,555 INFO L82 PathProgramCache]: Analyzing trace with hash -2111765408, now seen corresponding path program 30 times [2020-10-28 09:00:49,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:49,556 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991458107] [2020-10-28 09:00:49,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:49,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:49,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:50,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:54,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:54,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 09:00:54,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:00:54,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-28 09:00:54,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:54,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:00:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:00:54,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 162 [2020-10-28 09:00:54,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:00:55,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:00:55,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:55,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:00:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:00:55,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-28 09:00:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:55,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:55,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:55,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:55,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:00:55,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:55,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:55,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,239 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:55,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:00:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:55,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:55,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:55,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:00:55,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:55,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:55,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:55,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:55,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:00:55,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:55,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:55,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:55,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:00:55,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:55,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:55,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:55,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 09:00:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:55,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:00:55,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:55,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 09:00:55,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:55,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:00:55,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:55,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 09:00:55,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:55,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:55,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:00:55,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:00:55,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:00:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:00:55,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:00:55,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:00:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:00:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:00:55,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:00:55,288 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:00:55,367 INFO L134 CoverageAnalysis]: Checked inductivity of 714 backedges. 130 proven. 215 refuted. 0 times theorem prover too weak. 369 trivial. 0 not checked. [2020-10-28 09:00:55,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991458107] [2020-10-28 09:00:55,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:00:55,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:00:55,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1656481094] [2020-10-28 09:00:55,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:00:55,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:00:55,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:00:55,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=139, Invalid=617, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:00:55,369 INFO L87 Difference]: Start difference. First operand 154 states and 168 transitions. Second operand 28 states. [2020-10-28 09:00:57,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:00:57,198 INFO L93 Difference]: Finished difference Result 216 states and 244 transitions. [2020-10-28 09:00:57,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-28 09:00:57,204 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 150 [2020-10-28 09:00:57,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:00:57,206 INFO L225 Difference]: With dead ends: 216 [2020-10-28 09:00:57,206 INFO L226 Difference]: Without dead ends: 167 [2020-10-28 09:00:57,207 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 518 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=410, Invalid=2040, Unknown=0, NotChecked=0, Total=2450 [2020-10-28 09:00:57,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-28 09:00:57,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 157. [2020-10-28 09:00:57,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-10-28 09:00:57,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 172 transitions. [2020-10-28 09:00:57,219 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 172 transitions. Word has length 150 [2020-10-28 09:00:57,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:00:57,220 INFO L481 AbstractCegarLoop]: Abstraction has 157 states and 172 transitions. [2020-10-28 09:00:57,220 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:00:57,220 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 172 transitions. [2020-10-28 09:00:57,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-28 09:00:57,221 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:00:57,221 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:00:57,221 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-28 09:00:57,221 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:00:57,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:00:57,222 INFO L82 PathProgramCache]: Analyzing trace with hash 497903242, now seen corresponding path program 31 times [2020-10-28 09:00:57,222 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:00:57,222 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [473354236] [2020-10-28 09:00:57,222 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:00:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:00:57,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:00:57,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:02,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:02,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 181 [2020-10-28 09:01:02,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:02,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 09:01:02,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:02,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-28 09:01:02,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:01:02,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-28 09:01:02,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:03,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:03,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:03,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:03,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 09:01:03,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:03,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:03,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:01:03,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:03,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:03,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 09:01:03,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:03,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 09:01:03,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:03,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:03,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:03,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 09:01:03,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:03,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:03,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 09:01:03,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:03,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,031 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:03,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 09:01:03,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:03,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 09:01:03,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:03,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:03,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 09:01:03,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:03,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:03,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:03,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:03,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:03,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:03,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:03,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:03,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:03,082 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 20 proven. 355 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2020-10-28 09:01:03,083 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [473354236] [2020-10-28 09:01:03,083 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:03,083 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-28 09:01:03,083 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857025350] [2020-10-28 09:01:03,084 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-28 09:01:03,084 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:03,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-28 09:01:03,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-28 09:01:03,085 INFO L87 Difference]: Start difference. First operand 157 states and 172 transitions. Second operand 28 states. [2020-10-28 09:01:06,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:06,614 INFO L93 Difference]: Finished difference Result 208 states and 232 transitions. [2020-10-28 09:01:06,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-28 09:01:06,615 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 153 [2020-10-28 09:01:06,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:06,617 INFO L225 Difference]: With dead ends: 208 [2020-10-28 09:01:06,617 INFO L226 Difference]: Without dead ends: 204 [2020-10-28 09:01:06,619 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 542 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=220, Invalid=3440, Unknown=0, NotChecked=0, Total=3660 [2020-10-28 09:01:06,619 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-10-28 09:01:06,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 165. [2020-10-28 09:01:06,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-10-28 09:01:06,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 180 transitions. [2020-10-28 09:01:06,631 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 180 transitions. Word has length 153 [2020-10-28 09:01:06,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:06,632 INFO L481 AbstractCegarLoop]: Abstraction has 165 states and 180 transitions. [2020-10-28 09:01:06,632 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-28 09:01:06,632 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 180 transitions. [2020-10-28 09:01:06,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-28 09:01:06,633 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:06,633 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:06,633 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-28 09:01:06,633 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:06,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:06,634 INFO L82 PathProgramCache]: Analyzing trace with hash -465111836, now seen corresponding path program 32 times [2020-10-28 09:01:06,634 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:06,634 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1225599353] [2020-10-28 09:01:06,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:06,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:06,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:07,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 191 [2020-10-28 09:01:11,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:11,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-28 09:01:11,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-28 09:01:11,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:01:11,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-28 09:01:11,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:11,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:11,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:11,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:11,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-28 09:01:11,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:11,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 09:01:11,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:11,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-28 09:01:11,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:11,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-28 09:01:11,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:11,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-28 09:01:11,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:11,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-28 09:01:11,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:11,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-28 09:01:11,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:11,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2020-10-28 09:01:11,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,952 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-28 09:01:11,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:11,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-28 09:01:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:11,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:11,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:11,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:11,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:11,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:11,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:11,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:11,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:11,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:11,976 INFO L134 CoverageAnalysis]: Checked inductivity of 823 backedges. 20 proven. 225 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2020-10-28 09:01:11,977 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1225599353] [2020-10-28 09:01:11,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:11,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-28 09:01:11,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741558779] [2020-10-28 09:01:11,977 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-28 09:01:11,977 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:11,978 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-28 09:01:11,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:01:11,978 INFO L87 Difference]: Start difference. First operand 165 states and 180 transitions. Second operand 19 states. [2020-10-28 09:01:12,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:12,196 INFO L93 Difference]: Finished difference Result 296 states and 326 transitions. [2020-10-28 09:01:12,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-28 09:01:12,196 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 161 [2020-10-28 09:01:12,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:12,198 INFO L225 Difference]: With dead ends: 296 [2020-10-28 09:01:12,198 INFO L226 Difference]: Without dead ends: 168 [2020-10-28 09:01:12,199 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-28 09:01:12,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2020-10-28 09:01:12,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 167. [2020-10-28 09:01:12,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 167 states. [2020-10-28 09:01:12,212 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 182 transitions. [2020-10-28 09:01:12,212 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 182 transitions. Word has length 161 [2020-10-28 09:01:12,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:12,212 INFO L481 AbstractCegarLoop]: Abstraction has 167 states and 182 transitions. [2020-10-28 09:01:12,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-28 09:01:12,212 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 182 transitions. [2020-10-28 09:01:12,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2020-10-28 09:01:12,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:12,213 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 12, 12, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:12,214 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-28 09:01:12,214 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:12,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:12,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1101346882, now seen corresponding path program 33 times [2020-10-28 09:01:12,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:12,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2075504292] [2020-10-28 09:01:12,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:12,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:12,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:12,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:17,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:17,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 193 [2020-10-28 09:01:17,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:01:17,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:17,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:01:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:01:17,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-28 09:01:17,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:18,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:18,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:18,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:18,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-28 09:01:18,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:18,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:01:18,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:18,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 09:01:18,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:18,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:01:18,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:18,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 09:01:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 09:01:18,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:18,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 09:01:18,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:18,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 09:01:18,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:18,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 09:01:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:18,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-28 09:01:18,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:18,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:18,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:18,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:18,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:18,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:18,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:18,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:18,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:18,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:18,135 INFO L134 CoverageAnalysis]: Checked inductivity of 854 backedges. 200 proven. 218 refuted. 0 times theorem prover too weak. 436 trivial. 0 not checked. [2020-10-28 09:01:18,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2075504292] [2020-10-28 09:01:18,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:18,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:01:18,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624010884] [2020-10-28 09:01:18,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:01:18,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:18,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:01:18,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=700, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:01:18,138 INFO L87 Difference]: Start difference. First operand 167 states and 182 transitions. Second operand 30 states. [2020-10-28 09:01:20,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:20,163 INFO L93 Difference]: Finished difference Result 233 states and 263 transitions. [2020-10-28 09:01:20,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-28 09:01:20,164 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 163 [2020-10-28 09:01:20,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:20,167 INFO L225 Difference]: With dead ends: 233 [2020-10-28 09:01:20,167 INFO L226 Difference]: Without dead ends: 180 [2020-10-28 09:01:20,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 604 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=510, Invalid=2352, Unknown=0, NotChecked=0, Total=2862 [2020-10-28 09:01:20,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-28 09:01:20,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 170. [2020-10-28 09:01:20,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2020-10-28 09:01:20,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 186 transitions. [2020-10-28 09:01:20,181 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 186 transitions. Word has length 163 [2020-10-28 09:01:20,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:20,182 INFO L481 AbstractCegarLoop]: Abstraction has 170 states and 186 transitions. [2020-10-28 09:01:20,182 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:01:20,182 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 186 transitions. [2020-10-28 09:01:20,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-28 09:01:20,183 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:20,183 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 13, 13, 12, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:20,183 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-28 09:01:20,184 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:20,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:20,184 INFO L82 PathProgramCache]: Analyzing trace with hash 2049969244, now seen corresponding path program 34 times [2020-10-28 09:01:20,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:20,184 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993229623] [2020-10-28 09:01:20,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:20,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:20,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:25,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:25,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-28 09:01:25,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:25,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-28 09:01:25,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:25,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-28 09:01:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:01:25,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-28 09:01:25,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:26,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:26,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:26,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:26,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:01:26,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:26,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:01:26,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:26,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:01:26,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:26,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:01:26,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:26,066 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,067 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:01:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:26,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 09:01:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:26,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 09:01:26,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:26,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,082 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 09:01:26,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:26,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-28 09:01:26,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:26,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 09:01:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:26,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:26,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:26,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:26,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:26,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:26,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:26,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:26,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:26,141 INFO L134 CoverageAnalysis]: Checked inductivity of 890 backedges. 22 proven. 429 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2020-10-28 09:01:26,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993229623] [2020-10-28 09:01:26,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:26,141 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-28 09:01:26,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032554592] [2020-10-28 09:01:26,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-28 09:01:26,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:26,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-28 09:01:26,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2020-10-28 09:01:26,143 INFO L87 Difference]: Start difference. First operand 170 states and 186 transitions. Second operand 30 states. [2020-10-28 09:01:30,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:30,108 INFO L93 Difference]: Finished difference Result 225 states and 251 transitions. [2020-10-28 09:01:30,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-10-28 09:01:30,109 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 166 [2020-10-28 09:01:30,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:30,111 INFO L225 Difference]: With dead ends: 225 [2020-10-28 09:01:30,111 INFO L226 Difference]: Without dead ends: 221 [2020-10-28 09:01:30,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 610 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=234, Invalid=3926, Unknown=0, NotChecked=0, Total=4160 [2020-10-28 09:01:30,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2020-10-28 09:01:30,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 178. [2020-10-28 09:01:30,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-28 09:01:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2020-10-28 09:01:30,125 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 166 [2020-10-28 09:01:30,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:30,126 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2020-10-28 09:01:30,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-28 09:01:30,126 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2020-10-28 09:01:30,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2020-10-28 09:01:30,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:30,127 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:30,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-28 09:01:30,127 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:30,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:30,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1517791414, now seen corresponding path program 35 times [2020-10-28 09:01:30,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:30,128 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [243670479] [2020-10-28 09:01:30,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:30,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 206 [2020-10-28 09:01:35,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:35,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-28 09:01:35,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-28 09:01:35,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:01:35,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-28 09:01:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:35,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:35,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:35,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-28 09:01:35,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:35,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-28 09:01:35,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:35,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-28 09:01:35,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:35,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-28 09:01:35,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:35,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-28 09:01:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:35,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-28 09:01:35,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:35,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-28 09:01:35,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:35,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-28 09:01:35,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-28 09:01:35,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:35,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-28 09:01:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:01:35,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2020-10-28 09:01:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:35,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:35,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:35,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:35,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:01:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:35,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:35,510 INFO L134 CoverageAnalysis]: Checked inductivity of 974 backedges. 22 proven. 256 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2020-10-28 09:01:35,510 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [243670479] [2020-10-28 09:01:35,510 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:35,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-28 09:01:35,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663685210] [2020-10-28 09:01:35,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-28 09:01:35,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:35,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-28 09:01:35,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:01:35,512 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand 20 states. [2020-10-28 09:01:35,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:35,739 INFO L93 Difference]: Finished difference Result 320 states and 352 transitions. [2020-10-28 09:01:35,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-28 09:01:35,740 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 174 [2020-10-28 09:01:35,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:35,742 INFO L225 Difference]: With dead ends: 320 [2020-10-28 09:01:35,742 INFO L226 Difference]: Without dead ends: 181 [2020-10-28 09:01:35,743 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-28 09:01:35,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2020-10-28 09:01:35,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 180. [2020-10-28 09:01:35,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 180 states. [2020-10-28 09:01:35,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 196 transitions. [2020-10-28 09:01:35,756 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 196 transitions. Word has length 174 [2020-10-28 09:01:35,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:35,756 INFO L481 AbstractCegarLoop]: Abstraction has 180 states and 196 transitions. [2020-10-28 09:01:35,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-28 09:01:35,756 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 196 transitions. [2020-10-28 09:01:35,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2020-10-28 09:01:35,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:35,757 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 13, 13, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:35,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-28 09:01:35,758 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:35,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:35,758 INFO L82 PathProgramCache]: Analyzing trace with hash 554585624, now seen corresponding path program 36 times [2020-10-28 09:01:35,758 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:35,758 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [624478351] [2020-10-28 09:01:35,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:35,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:35,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:36,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:40,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:40,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 208 [2020-10-28 09:01:40,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:40,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-28 09:01:40,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:40,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:40,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:01:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:01:40,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-10-28 09:01:40,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:41,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:41,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 09:01:41,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:41,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-28 09:01:41,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:41,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:01:41,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:41,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:01:41,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:41,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:01:41,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:41,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,678 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:01:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:41,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:01:41,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:41,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:01:41,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,700 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:41,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-28 09:01:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:41,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:01:41,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:41,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 09:01:41,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:41,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-28 09:01:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:41,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:41,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:41,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:41,727 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:01:41,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:41,727 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:41,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:41,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:41,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:41,824 INFO L134 CoverageAnalysis]: Checked inductivity of 1007 backedges. 202 proven. 296 refuted. 0 times theorem prover too weak. 509 trivial. 0 not checked. [2020-10-28 09:01:41,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [624478351] [2020-10-28 09:01:41,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:41,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:01:41,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746561279] [2020-10-28 09:01:41,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:01:41,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:41,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:01:41,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=805, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:01:41,826 INFO L87 Difference]: Start difference. First operand 180 states and 196 transitions. Second operand 32 states. [2020-10-28 09:01:44,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:44,119 INFO L93 Difference]: Finished difference Result 250 states and 282 transitions. [2020-10-28 09:01:44,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-28 09:01:44,119 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 176 [2020-10-28 09:01:44,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:44,121 INFO L225 Difference]: With dead ends: 250 [2020-10-28 09:01:44,121 INFO L226 Difference]: Without dead ends: 193 [2020-10-28 09:01:44,123 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 718 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=558, Invalid=2748, Unknown=0, NotChecked=0, Total=3306 [2020-10-28 09:01:44,123 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-28 09:01:44,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 183. [2020-10-28 09:01:44,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-10-28 09:01:44,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 200 transitions. [2020-10-28 09:01:44,137 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 200 transitions. Word has length 176 [2020-10-28 09:01:44,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:44,137 INFO L481 AbstractCegarLoop]: Abstraction has 183 states and 200 transitions. [2020-10-28 09:01:44,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:01:44,137 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 200 transitions. [2020-10-28 09:01:44,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-10-28 09:01:44,138 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:44,139 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 14, 14, 13, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:44,139 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-28 09:01:44,139 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:44,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:44,140 INFO L82 PathProgramCache]: Analyzing trace with hash 562227130, now seen corresponding path program 37 times [2020-10-28 09:01:44,140 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:44,140 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1157659555] [2020-10-28 09:01:44,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:44,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:44,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:44,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:49,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:49,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 211 [2020-10-28 09:01:49,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:01:49,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-28 09:01:49,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:49,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-28 09:01:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:01:49,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 195 [2020-10-28 09:01:49,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:01:50,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:01:50,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:50,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,151 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:01:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:01:50,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:01:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:50,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 09:01:50,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:50,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:01:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:50,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 09:01:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:50,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 09:01:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 09:01:50,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:50,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 09:01:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 09:01:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,182 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:50,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,183 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-28 09:01:50,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:50,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 09:01:50,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:01:50,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,193 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-28 09:01:50,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:50,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:50,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:01:50,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:01:50,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:01:50,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:01:50,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:01:50,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:01:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:01:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:01:50,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:01:50,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:01:50,252 INFO L134 CoverageAnalysis]: Checked inductivity of 1046 backedges. 24 proven. 510 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2020-10-28 09:01:50,252 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1157659555] [2020-10-28 09:01:50,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:01:50,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-28 09:01:50,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920845192] [2020-10-28 09:01:50,253 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-28 09:01:50,253 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:01:50,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-28 09:01:50,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=930, Unknown=0, NotChecked=0, Total=992 [2020-10-28 09:01:50,254 INFO L87 Difference]: Start difference. First operand 183 states and 200 transitions. Second operand 32 states. [2020-10-28 09:01:55,057 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:01:55,057 INFO L93 Difference]: Finished difference Result 242 states and 270 transitions. [2020-10-28 09:01:55,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2020-10-28 09:01:55,058 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 179 [2020-10-28 09:01:55,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:01:55,061 INFO L225 Difference]: With dead ends: 242 [2020-10-28 09:01:55,061 INFO L226 Difference]: Without dead ends: 238 [2020-10-28 09:01:55,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 94 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 757 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=258, Invalid=4712, Unknown=0, NotChecked=0, Total=4970 [2020-10-28 09:01:55,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-10-28 09:01:55,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 191. [2020-10-28 09:01:55,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 191 states. [2020-10-28 09:01:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 208 transitions. [2020-10-28 09:01:55,078 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 208 transitions. Word has length 179 [2020-10-28 09:01:55,078 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:01:55,078 INFO L481 AbstractCegarLoop]: Abstraction has 191 states and 208 transitions. [2020-10-28 09:01:55,079 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-28 09:01:55,079 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 208 transitions. [2020-10-28 09:01:55,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2020-10-28 09:01:55,080 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:01:55,080 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:01:55,080 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-28 09:01:55,080 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:01:55,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:01:55,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1948236268, now seen corresponding path program 38 times [2020-10-28 09:01:55,081 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:01:55,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [675147365] [2020-10-28 09:01:55,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:01:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:01:55,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:01:55,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 221 [2020-10-28 09:02:00,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:02:00,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-10-28 09:02:00,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,132 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-28 09:02:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:02:00,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-28 09:02:00,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:00,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:00,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:02:00,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:00,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-28 09:02:00,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:00,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-28 09:02:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:00,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-28 09:02:00,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-28 09:02:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:00,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-28 09:02:00,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:00,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-28 09:02:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:00,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,463 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-28 09:02:00,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:00,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-28 09:02:00,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:02:00,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2020-10-28 09:02:00,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:02:00,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 09:02:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:00,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2020-10-28 09:02:00,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:02:00,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-28 09:02:00,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:00,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:00,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:00,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:00,483 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:00,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:00,523 INFO L134 CoverageAnalysis]: Checked inductivity of 1138 backedges. 24 proven. 289 refuted. 0 times theorem prover too weak. 825 trivial. 0 not checked. [2020-10-28 09:02:00,523 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [675147365] [2020-10-28 09:02:00,523 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:00,523 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-28 09:02:00,523 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48255837] [2020-10-28 09:02:00,524 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-28 09:02:00,524 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:00,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-28 09:02:00,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:02:00,525 INFO L87 Difference]: Start difference. First operand 191 states and 208 transitions. Second operand 21 states. [2020-10-28 09:02:00,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:00,705 INFO L93 Difference]: Finished difference Result 344 states and 378 transitions. [2020-10-28 09:02:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-28 09:02:00,705 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 187 [2020-10-28 09:02:00,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:00,707 INFO L225 Difference]: With dead ends: 344 [2020-10-28 09:02:00,707 INFO L226 Difference]: Without dead ends: 194 [2020-10-28 09:02:00,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-28 09:02:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-28 09:02:00,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 193. [2020-10-28 09:02:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 193 states. [2020-10-28 09:02:00,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 193 states to 193 states and 210 transitions. [2020-10-28 09:02:00,722 INFO L78 Accepts]: Start accepts. Automaton has 193 states and 210 transitions. Word has length 187 [2020-10-28 09:02:00,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:00,722 INFO L481 AbstractCegarLoop]: Abstraction has 193 states and 210 transitions. [2020-10-28 09:02:00,722 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-28 09:02:00,722 INFO L276 IsEmpty]: Start isEmpty. Operand 193 states and 210 transitions. [2020-10-28 09:02:00,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-28 09:02:00,723 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:00,724 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 14, 14, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:00,724 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-28 09:02:00,724 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:00,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:00,724 INFO L82 PathProgramCache]: Analyzing trace with hash 316993522, now seen corresponding path program 39 times [2020-10-28 09:02:00,725 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:00,725 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884610340] [2020-10-28 09:02:00,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:00,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:00,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:01,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:05,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:05,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-28 09:02:05,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:02:05,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-28 09:02:05,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:05,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:02:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:02:05,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 207 [2020-10-28 09:02:05,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:06,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:06,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-28 09:02:06,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:02:06,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 09:02:06,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:06,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-28 09:02:06,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:06,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-28 09:02:06,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:02:06,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-28 09:02:06,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:06,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-28 09:02:06,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-28 09:02:06,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-28 09:02:06,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:02:06,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-28 09:02:06,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,772 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-28 09:02:06,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2020-10-28 09:02:06,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:06,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,779 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2020-10-28 09:02:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:06,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2020-10-28 09:02:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:06,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:06,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:06,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:06,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:06,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:06,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:06,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:06,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:06,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:06,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:06,906 INFO L134 CoverageAnalysis]: Checked inductivity of 1173 backedges. 288 proven. 297 refuted. 0 times theorem prover too weak. 588 trivial. 0 not checked. [2020-10-28 09:02:06,907 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884610340] [2020-10-28 09:02:06,907 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:06,907 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:02:06,907 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416072893] [2020-10-28 09:02:06,908 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:02:06,908 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:06,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:02:06,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=224, Invalid=898, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:02:06,909 INFO L87 Difference]: Start difference. First operand 193 states and 210 transitions. Second operand 34 states. [2020-10-28 09:02:09,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:09,544 INFO L93 Difference]: Finished difference Result 267 states and 301 transitions. [2020-10-28 09:02:09,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2020-10-28 09:02:09,545 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 189 [2020-10-28 09:02:09,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:09,546 INFO L225 Difference]: With dead ends: 267 [2020-10-28 09:02:09,546 INFO L226 Difference]: Without dead ends: 206 [2020-10-28 09:02:09,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 857 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=681, Invalid=3225, Unknown=0, NotChecked=0, Total=3906 [2020-10-28 09:02:09,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-10-28 09:02:09,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 196. [2020-10-28 09:02:09,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-10-28 09:02:09,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 214 transitions. [2020-10-28 09:02:09,563 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 214 transitions. Word has length 189 [2020-10-28 09:02:09,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:09,563 INFO L481 AbstractCegarLoop]: Abstraction has 196 states and 214 transitions. [2020-10-28 09:02:09,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:02:09,563 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 214 transitions. [2020-10-28 09:02:09,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2020-10-28 09:02:09,565 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:09,565 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 15, 15, 14, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:09,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-28 09:02:09,565 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:09,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:09,566 INFO L82 PathProgramCache]: Analyzing trace with hash -1126148972, now seen corresponding path program 40 times [2020-10-28 09:02:09,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:09,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [521375057] [2020-10-28 09:02:09,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:09,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:09,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:10,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:14,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:14,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-28 09:02:14,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:02:14,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-28 09:02:14,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-28 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-28 09:02:14,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,712 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:15,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:15,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:15,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:02:15,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:02:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,728 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:02:15,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:02:15,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,739 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:02:15,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:02:15,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-28 09:02:15,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:02:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 09:02:15,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-28 09:02:15,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:02:15,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,774 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-28 09:02:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,780 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 09:02:15,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:15,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:15,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:15,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:15,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:15,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:15,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:15,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 09:02:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:15,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-28 09:02:15,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:15,874 INFO L134 CoverageAnalysis]: Checked inductivity of 1215 backedges. 26 proven. 598 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2020-10-28 09:02:15,875 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [521375057] [2020-10-28 09:02:15,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:15,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34] total 34 [2020-10-28 09:02:15,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816713893] [2020-10-28 09:02:15,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 34 states [2020-10-28 09:02:15,875 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:15,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2020-10-28 09:02:15,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=1056, Unknown=0, NotChecked=0, Total=1122 [2020-10-28 09:02:15,876 INFO L87 Difference]: Start difference. First operand 196 states and 214 transitions. Second operand 34 states. [2020-10-28 09:02:21,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:21,464 INFO L93 Difference]: Finished difference Result 259 states and 289 transitions. [2020-10-28 09:02:21,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2020-10-28 09:02:21,465 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 192 [2020-10-28 09:02:21,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:21,467 INFO L225 Difference]: With dead ends: 259 [2020-10-28 09:02:21,468 INFO L226 Difference]: Without dead ends: 255 [2020-10-28 09:02:21,468 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 837 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=272, Invalid=5278, Unknown=0, NotChecked=0, Total=5550 [2020-10-28 09:02:21,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2020-10-28 09:02:21,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 204. [2020-10-28 09:02:21,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-10-28 09:02:21,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 222 transitions. [2020-10-28 09:02:21,482 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 222 transitions. Word has length 192 [2020-10-28 09:02:21,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:21,483 INFO L481 AbstractCegarLoop]: Abstraction has 204 states and 222 transitions. [2020-10-28 09:02:21,483 INFO L482 AbstractCegarLoop]: Interpolant automaton has 34 states. [2020-10-28 09:02:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 222 transitions. [2020-10-28 09:02:21,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2020-10-28 09:02:21,484 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:21,484 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:21,485 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45 [2020-10-28 09:02:21,485 INFO L429 AbstractCegarLoop]: === Iteration 47 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:21,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:21,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1688717074, now seen corresponding path program 41 times [2020-10-28 09:02:21,485 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:21,485 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414882722] [2020-10-28 09:02:21,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:21,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:21,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:22,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-28 09:02:26,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 09:02:26,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-10-28 09:02:26,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,536 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-28 09:02:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-28 09:02:26,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-28 09:02:26,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 09:02:26,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 09:02:26,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-28 09:02:26,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 09:02:26,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-28 09:02:26,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-28 09:02:26,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,895 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-28 09:02:26,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-28 09:02:26,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-28 09:02:26,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,904 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-28 09:02:26,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-28 09:02:26,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,910 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-28 09:02:26,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-28 09:02:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2020-10-28 09:02:26,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2020-10-28 09:02:26,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,921 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2020-10-28 09:02:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-28 09:02:26,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2020-10-28 09:02:26,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:26,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 09:02:26,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 09:02:26,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-28 09:02:26,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 09:02:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-28 09:02:26,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 09:02:26,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 09:02:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 09:02:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-28 09:02:26,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 09:02:26,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 09:02:26,963 INFO L134 CoverageAnalysis]: Checked inductivity of 1315 backedges. 26 proven. 324 refuted. 0 times theorem prover too weak. 965 trivial. 0 not checked. [2020-10-28 09:02:26,963 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414882722] [2020-10-28 09:02:26,963 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 09:02:26,963 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-28 09:02:26,963 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584986776] [2020-10-28 09:02:26,963 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-28 09:02:26,964 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 09:02:26,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-28 09:02:26,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:02:26,964 INFO L87 Difference]: Start difference. First operand 204 states and 222 transitions. Second operand 22 states. [2020-10-28 09:02:27,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 09:02:27,213 INFO L93 Difference]: Finished difference Result 368 states and 404 transitions. [2020-10-28 09:02:27,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-28 09:02:27,214 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 200 [2020-10-28 09:02:27,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 09:02:27,216 INFO L225 Difference]: With dead ends: 368 [2020-10-28 09:02:27,216 INFO L226 Difference]: Without dead ends: 207 [2020-10-28 09:02:27,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=212, Invalid=250, Unknown=0, NotChecked=0, Total=462 [2020-10-28 09:02:27,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2020-10-28 09:02:27,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 206. [2020-10-28 09:02:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-10-28 09:02:27,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 224 transitions. [2020-10-28 09:02:27,235 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 224 transitions. Word has length 200 [2020-10-28 09:02:27,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 09:02:27,235 INFO L481 AbstractCegarLoop]: Abstraction has 206 states and 224 transitions. [2020-10-28 09:02:27,235 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-28 09:02:27,235 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 224 transitions. [2020-10-28 09:02:27,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2020-10-28 09:02:27,237 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 09:02:27,237 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 15, 15, 14, 14, 14, 14, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 09:02:27,237 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2020-10-28 09:02:27,237 INFO L429 AbstractCegarLoop]: === Iteration 48 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 09:02:27,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 09:02:27,238 INFO L82 PathProgramCache]: Analyzing trace with hash -482146352, now seen corresponding path program 42 times [2020-10-28 09:02:27,238 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 09:02:27,238 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [352491775] [2020-10-28 09:02:27,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 09:02:27,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 09:02:27,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking...