/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem14_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:35:11,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:35:11,489 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:35:11,527 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:35:11,528 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:35:11,530 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:35:11,532 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:35:11,534 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:35:11,537 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:35:11,538 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:35:11,540 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:35:11,541 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:35:11,542 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:35:11,543 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:35:11,545 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:35:11,546 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:35:11,547 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:35:11,549 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:35:11,551 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:35:11,554 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:35:11,556 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:35:11,558 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:35:11,559 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:35:11,560 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:35:11,579 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:35:11,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:35:11,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:35:11,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:35:11,585 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:35:11,586 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:35:11,587 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:35:11,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:35:11,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:35:11,590 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:35:11,591 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:35:11,591 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:35:11,592 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:35:11,592 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:35:11,593 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:35:11,594 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:35:11,595 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:35:11,596 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:35:11,623 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:35:11,624 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:35:11,625 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:35:11,626 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:35:11,626 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:35:11,626 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:35:11,627 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:35:11,627 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:35:11,627 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:35:11,628 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:35:11,628 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:35:11,628 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:35:11,629 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:35:11,629 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:35:11,629 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:35:11,630 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:35:11,630 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:35:11,630 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:35:11,630 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:35:11,631 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:35:11,631 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:35:11,631 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:35:11,632 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:35:11,632 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:35:11,632 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:35:11,633 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:35:11,633 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:35:11,633 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:35:11,633 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:35:11,634 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:35:12,028 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:35:12,066 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:35:12,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:35:12,071 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:35:12,071 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:35:12,072 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label43.c [2020-10-29 07:35:12,152 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02089083a/d7e265ef09b64cd598c383b72af8b78a/FLAG12d9ef614 [2020-10-29 07:35:13,021 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:35:13,022 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label43.c [2020-10-29 07:35:13,041 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02089083a/d7e265ef09b64cd598c383b72af8b78a/FLAG12d9ef614 [2020-10-29 07:35:13,222 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/02089083a/d7e265ef09b64cd598c383b72af8b78a [2020-10-29 07:35:13,225 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:35:13,233 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:35:13,234 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:35:13,235 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:35:13,239 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:35:13,240 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:35:13" (1/1) ... [2020-10-29 07:35:13,243 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63ccacbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:13, skipping insertion in model container [2020-10-29 07:35:13,243 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:35:13" (1/1) ... [2020-10-29 07:35:13,252 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:35:13,332 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:35:13,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:35:13,855 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:35:13,994 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:35:14,016 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:35:14,016 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14 WrapperNode [2020-10-29 07:35:14,017 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:35:14,018 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:35:14,018 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:35:14,018 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:35:14,033 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14" (1/1) ... [2020-10-29 07:35:14,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14" (1/1) ... [2020-10-29 07:35:14,059 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14" (1/1) ... [2020-10-29 07:35:14,060 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14" (1/1) ... [2020-10-29 07:35:14,130 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14" (1/1) ... [2020-10-29 07:35:14,143 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14" (1/1) ... [2020-10-29 07:35:14,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14" (1/1) ... [2020-10-29 07:35:14,163 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:35:14,164 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:35:14,164 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:35:14,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:35:14,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:35:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:35:14,260 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:35:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:35:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:35:14,261 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:35:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:35:14,261 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:35:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:35:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:35:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:35:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:35:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:35:14,262 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:35:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:35:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:35:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:35:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:35:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:35:14,263 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:35:15,956 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:35:15,956 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:35:15,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:35:15 BoogieIcfgContainer [2020-10-29 07:35:15,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:35:15,961 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:35:15,961 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:35:15,965 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:35:15,965 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:35:13" (1/3) ... [2020-10-29 07:35:15,966 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4a8b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:35:15, skipping insertion in model container [2020-10-29 07:35:15,966 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:35:14" (2/3) ... [2020-10-29 07:35:15,967 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e4a8b0b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:35:15, skipping insertion in model container [2020-10-29 07:35:15,967 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:35:15" (3/3) ... [2020-10-29 07:35:15,969 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem14_label43.c [2020-10-29 07:35:15,982 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:35:15,987 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:35:16,002 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:35:16,037 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:35:16,037 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:35:16,038 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:35:16,038 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:35:16,038 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:35:16,038 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:35:16,038 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:35:16,039 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:35:16,065 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states. [2020-10-29 07:35:16,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-29 07:35:16,072 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:16,074 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:16,074 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:16,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:16,081 INFO L82 PathProgramCache]: Analyzing trace with hash -1374248048, now seen corresponding path program 1 times [2020-10-29 07:35:16,091 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:16,091 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708044096] [2020-10-29 07:35:16,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:16,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:16,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:16,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:16,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-29 07:35:16,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:16,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 672 [2020-10-29 07:35:16,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:16,944 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:35:16,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:35:16,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 07:35:16,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:35:17,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:17,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:17,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:17,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:17,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:17,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:17,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:35:17,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:17,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:17,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:35:17,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:35:17,188 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:35:17,241 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [708044096] [2020-10-29 07:35:17,248 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:35:17,249 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:35:17,250 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1038316589] [2020-10-29 07:35:17,256 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:35:17,256 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:17,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:35:17,278 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:35:17,280 INFO L87 Difference]: Start difference. First operand 258 states. Second operand 4 states. [2020-10-29 07:35:19,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:19,703 INFO L93 Difference]: Finished difference Result 703 states and 1246 transitions. [2020-10-29 07:35:19,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:35:19,705 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-29 07:35:19,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:19,721 INFO L225 Difference]: With dead ends: 703 [2020-10-29 07:35:19,721 INFO L226 Difference]: Without dead ends: 381 [2020-10-29 07:35:19,732 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:35:19,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2020-10-29 07:35:19,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 377. [2020-10-29 07:35:19,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 377 states. [2020-10-29 07:35:19,814 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 553 transitions. [2020-10-29 07:35:19,816 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 553 transitions. Word has length 22 [2020-10-29 07:35:19,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:19,817 INFO L481 AbstractCegarLoop]: Abstraction has 377 states and 553 transitions. [2020-10-29 07:35:19,817 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:35:19,817 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 553 transitions. [2020-10-29 07:35:19,821 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-10-29 07:35:19,822 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:19,822 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:19,823 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:35:19,823 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:19,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:19,824 INFO L82 PathProgramCache]: Analyzing trace with hash -718830436, now seen corresponding path program 1 times [2020-10-29 07:35:19,824 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:19,824 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1967083704] [2020-10-29 07:35:19,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:19,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:20,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:20,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:20,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-29 07:35:20,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:35:20,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-10-29 07:35:20,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:20,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:20,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:35:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:35:20,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 07:35:20,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:35:21,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:21,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:21,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:21,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:21,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:21,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 07:35:21,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:21,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:21,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:21,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:35:21,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:35:21,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:21,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:21,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:21,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 07:35:21,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:21,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-29 07:35:21,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:21,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:21,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:21,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:21,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 07:35:21,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:21,331 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:35:21,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1967083704] [2020-10-29 07:35:21,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:35:21,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:35:21,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228424673] [2020-10-29 07:35:21,335 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:35:21,335 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:21,337 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:35:21,338 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:35:21,339 INFO L87 Difference]: Start difference. First operand 377 states and 553 transitions. Second operand 7 states. [2020-10-29 07:35:24,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:24,135 INFO L93 Difference]: Finished difference Result 1147 states and 1715 transitions. [2020-10-29 07:35:24,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:35:24,137 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 91 [2020-10-29 07:35:24,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:24,144 INFO L225 Difference]: With dead ends: 1147 [2020-10-29 07:35:24,144 INFO L226 Difference]: Without dead ends: 776 [2020-10-29 07:35:24,146 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:35:24,148 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 776 states. [2020-10-29 07:35:24,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 776 to 753. [2020-10-29 07:35:24,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 753 states. [2020-10-29 07:35:24,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 996 transitions. [2020-10-29 07:35:24,208 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 996 transitions. Word has length 91 [2020-10-29 07:35:24,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:24,208 INFO L481 AbstractCegarLoop]: Abstraction has 753 states and 996 transitions. [2020-10-29 07:35:24,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:35:24,209 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 996 transitions. [2020-10-29 07:35:24,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-29 07:35:24,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:24,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:24,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:35:24,211 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:24,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:24,212 INFO L82 PathProgramCache]: Analyzing trace with hash -1813719404, now seen corresponding path program 1 times [2020-10-29 07:35:24,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:24,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1255977522] [2020-10-29 07:35:24,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:24,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:24,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:24,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 07:35:25,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:35:25,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1217 [2020-10-29 07:35:25,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:35:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:35:25,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:35:25,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:25,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:25,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:25,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:25,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:35:25,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:35:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:25,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:25,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:25,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:25,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:25,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:35:25,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:25,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 07:35:25,788 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:25,788 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:25,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:35:25,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:25,910 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:35:25,910 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1255977522] [2020-10-29 07:35:25,911 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:35:25,911 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:35:25,911 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029431873] [2020-10-29 07:35:25,912 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:35:25,912 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:25,913 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:35:25,915 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:35:25,915 INFO L87 Difference]: Start difference. First operand 753 states and 996 transitions. Second operand 8 states. [2020-10-29 07:35:29,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:29,881 INFO L93 Difference]: Finished difference Result 2634 states and 3614 transitions. [2020-10-29 07:35:29,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:35:29,883 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 95 [2020-10-29 07:35:29,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:29,902 INFO L225 Difference]: With dead ends: 2634 [2020-10-29 07:35:29,903 INFO L226 Difference]: Without dead ends: 1887 [2020-10-29 07:35:29,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2020-10-29 07:35:29,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1887 states. [2020-10-29 07:35:29,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1887 to 1867. [2020-10-29 07:35:29,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1867 states. [2020-10-29 07:35:30,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1867 states to 1867 states and 2339 transitions. [2020-10-29 07:35:30,000 INFO L78 Accepts]: Start accepts. Automaton has 1867 states and 2339 transitions. Word has length 95 [2020-10-29 07:35:30,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:30,001 INFO L481 AbstractCegarLoop]: Abstraction has 1867 states and 2339 transitions. [2020-10-29 07:35:30,001 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:35:30,001 INFO L276 IsEmpty]: Start isEmpty. Operand 1867 states and 2339 transitions. [2020-10-29 07:35:30,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2020-10-29 07:35:30,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:30,019 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:30,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:35:30,020 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:30,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:30,024 INFO L82 PathProgramCache]: Analyzing trace with hash 424126036, now seen corresponding path program 1 times [2020-10-29 07:35:30,024 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:30,024 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [827927129] [2020-10-29 07:35:30,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:30,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:30,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:30,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:30,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:31,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:31,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:33,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:33,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-29 07:35:33,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:35:33,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3200 [2020-10-29 07:35:33,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:33,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:35:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:35:33,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 175 [2020-10-29 07:35:33,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:33,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:33,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:33,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:33,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:33,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:33,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:33,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:35:33,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:33,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:33,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:35:33,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:33,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:33,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:33,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:33,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:33,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:35:33,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:33,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-29 07:35:33,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:33,620 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:33,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:35:33,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:35:33,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 07:35:33,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:33,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:33,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:33,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:35:33,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:33,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:35:33,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:33,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:33,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:35:33,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:34,097 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 29 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 07:35:34,097 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [827927129] [2020-10-29 07:35:34,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:35:34,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:35:34,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [84907333] [2020-10-29 07:35:34,100 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:35:34,101 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:34,101 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:35:34,101 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:35:34,102 INFO L87 Difference]: Start difference. First operand 1867 states and 2339 transitions. Second operand 8 states. [2020-10-29 07:35:36,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:36,724 INFO L93 Difference]: Finished difference Result 3958 states and 4965 transitions. [2020-10-29 07:35:36,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 07:35:36,726 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 189 [2020-10-29 07:35:36,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:36,744 INFO L225 Difference]: With dead ends: 3958 [2020-10-29 07:35:36,745 INFO L226 Difference]: Without dead ends: 2279 [2020-10-29 07:35:36,750 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2020-10-29 07:35:36,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2279 states. [2020-10-29 07:35:36,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2279 to 2061. [2020-10-29 07:35:36,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2061 states. [2020-10-29 07:35:36,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2061 states to 2061 states and 2543 transitions. [2020-10-29 07:35:36,840 INFO L78 Accepts]: Start accepts. Automaton has 2061 states and 2543 transitions. Word has length 189 [2020-10-29 07:35:36,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:36,842 INFO L481 AbstractCegarLoop]: Abstraction has 2061 states and 2543 transitions. [2020-10-29 07:35:36,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:35:36,842 INFO L276 IsEmpty]: Start isEmpty. Operand 2061 states and 2543 transitions. [2020-10-29 07:35:36,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 409 [2020-10-29 07:35:36,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:36,852 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:36,852 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:35:36,853 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:36,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:36,853 INFO L82 PathProgramCache]: Analyzing trace with hash -172811504, now seen corresponding path program 1 times [2020-10-29 07:35:36,854 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:36,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2118765049] [2020-10-29 07:35:36,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:37,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:37,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:38,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:38,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:39,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:42,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:42,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-29 07:35:42,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:35:42,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5060 [2020-10-29 07:35:42,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:42,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:42,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:35:42,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:35:42,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:42,157 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:42,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:42,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:42,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:42,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:42,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:35:42,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:42,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:42,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:42,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:42,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:42,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:42,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:42,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:42,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:35:42,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:35:42,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:42,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:42,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:42,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:42,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:35:42,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:42,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:42,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:42,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:35:42,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:42,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-29 07:35:42,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:42,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:42,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:35:42,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:42,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:35:42,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:42,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:42,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:42,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:35:42,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:42,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-29 07:35:42,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:42,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:42,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:42,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:35:42,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:35:42,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 311 [2020-10-29 07:35:42,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:42,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:42,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:42,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:35:42,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:42,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-29 07:35:42,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:42,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:42,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:42,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:35:42,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:42,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:42,895 INFO L134 CoverageAnalysis]: Checked inductivity of 582 backedges. 231 proven. 82 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-29 07:35:42,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2118765049] [2020-10-29 07:35:42,896 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:35:42,896 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:35:42,896 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543978573] [2020-10-29 07:35:42,897 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:35:42,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:42,898 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:35:42,898 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:35:42,898 INFO L87 Difference]: Start difference. First operand 2061 states and 2543 transitions. Second operand 7 states. [2020-10-29 07:35:46,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:46,667 INFO L93 Difference]: Finished difference Result 5436 states and 6870 transitions. [2020-10-29 07:35:46,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:35:46,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 408 [2020-10-29 07:35:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:46,692 INFO L225 Difference]: With dead ends: 5436 [2020-10-29 07:35:46,693 INFO L226 Difference]: Without dead ends: 3381 [2020-10-29 07:35:46,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:35:46,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3381 states. [2020-10-29 07:35:46,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3381 to 3367. [2020-10-29 07:35:46,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3367 states. [2020-10-29 07:35:46,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3367 states to 3367 states and 4229 transitions. [2020-10-29 07:35:46,818 INFO L78 Accepts]: Start accepts. Automaton has 3367 states and 4229 transitions. Word has length 408 [2020-10-29 07:35:46,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:46,822 INFO L481 AbstractCegarLoop]: Abstraction has 3367 states and 4229 transitions. [2020-10-29 07:35:46,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:35:46,822 INFO L276 IsEmpty]: Start isEmpty. Operand 3367 states and 4229 transitions. [2020-10-29 07:35:46,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 422 [2020-10-29 07:35:46,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:46,834 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:46,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:35:46,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:46,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:46,835 INFO L82 PathProgramCache]: Analyzing trace with hash 2044855952, now seen corresponding path program 1 times [2020-10-29 07:35:46,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:46,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [445846512] [2020-10-29 07:35:46,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:46,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:47,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:47,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:47,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:51,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:51,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 439 [2020-10-29 07:35:51,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:35:51,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-10-29 07:35:51,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:51,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:51,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:35:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:35:51,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 251 [2020-10-29 07:35:51,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:35:52,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:35:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:52,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:52,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:52,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:35:52,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:52,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:35:52,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:52,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:52,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:35:52,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:35:52,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:35:52,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:35:52,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:35:52,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:52,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:52,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:52,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:35:52,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:52,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:35:52,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:52,252 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:52,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:52,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:35:52,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:35:52,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:35:52,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:52,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:52,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:52,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:35:52,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:52,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-29 07:35:52,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:52,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:35:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:35:52,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 07:35:52,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:35:52,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2020-10-29 07:35:52,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:52,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:52,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:52,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:35:52,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:52,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:35:52,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:52,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:35:52,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:52,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:52,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 324 [2020-10-29 07:35:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:52,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:52,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:35:52,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:35:52,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:35:52,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-29 07:35:52,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:35:52,920 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:35:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:35:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:35:52,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:35:52,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:35:53,501 INFO L134 CoverageAnalysis]: Checked inductivity of 551 backedges. 65 proven. 397 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-29 07:35:53,502 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [445846512] [2020-10-29 07:35:53,502 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:35:53,502 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:35:53,502 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384549755] [2020-10-29 07:35:53,503 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:35:53,504 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:35:53,504 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:35:53,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:35:53,504 INFO L87 Difference]: Start difference. First operand 3367 states and 4229 transitions. Second operand 8 states. [2020-10-29 07:35:56,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:35:56,270 INFO L93 Difference]: Finished difference Result 6810 states and 8761 transitions. [2020-10-29 07:35:56,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:35:56,271 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 421 [2020-10-29 07:35:56,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:35:56,295 INFO L225 Difference]: With dead ends: 6810 [2020-10-29 07:35:56,295 INFO L226 Difference]: Without dead ends: 3817 [2020-10-29 07:35:56,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:35:56,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3817 states. [2020-10-29 07:35:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3817 to 3731. [2020-10-29 07:35:56,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3731 states. [2020-10-29 07:35:56,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3731 states to 3731 states and 4612 transitions. [2020-10-29 07:35:56,478 INFO L78 Accepts]: Start accepts. Automaton has 3731 states and 4612 transitions. Word has length 421 [2020-10-29 07:35:56,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:35:56,480 INFO L481 AbstractCegarLoop]: Abstraction has 3731 states and 4612 transitions. [2020-10-29 07:35:56,480 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:35:56,480 INFO L276 IsEmpty]: Start isEmpty. Operand 3731 states and 4612 transitions. [2020-10-29 07:35:56,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 501 [2020-10-29 07:35:56,492 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:35:56,493 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:35:56,493 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:35:56,493 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:35:56,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:35:56,494 INFO L82 PathProgramCache]: Analyzing trace with hash 1982922696, now seen corresponding path program 1 times [2020-10-29 07:35:56,495 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:35:56,495 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [543413830] [2020-10-29 07:35:56,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:35:56,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:35:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:56,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:35:57,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:01,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:01,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 518 [2020-10-29 07:36:01,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:36:01,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-29 07:36:01,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:01,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:01,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:36:01,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 07:36:01,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:01,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:01,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:01,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:01,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:01,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:36:01,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:01,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:01,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:01,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:01,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:01,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:01,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:01,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:01,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:01,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:36:01,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:01,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:01,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:01,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:02,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-29 07:36:02,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:36:02,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:02,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 07:36:02,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-29 07:36:02,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:02,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 07:36:02,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:02,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 403 [2020-10-29 07:36:02,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:02,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:02,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:02,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:36:02,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:02,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:36:02,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:02,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:36:02,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:02,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:03,023 INFO L134 CoverageAnalysis]: Checked inductivity of 633 backedges. 282 proven. 82 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2020-10-29 07:36:03,023 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [543413830] [2020-10-29 07:36:03,024 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:03,024 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:36:03,024 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578684621] [2020-10-29 07:36:03,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:03,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:03,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:03,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:03,027 INFO L87 Difference]: Start difference. First operand 3731 states and 4612 transitions. Second operand 7 states. [2020-10-29 07:36:03,182 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-29 07:36:05,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:05,461 INFO L93 Difference]: Finished difference Result 6932 states and 8700 transitions. [2020-10-29 07:36:05,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:36:05,462 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 500 [2020-10-29 07:36:05,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:05,483 INFO L225 Difference]: With dead ends: 6932 [2020-10-29 07:36:05,483 INFO L226 Difference]: Without dead ends: 3941 [2020-10-29 07:36:05,492 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:36:05,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3941 states. [2020-10-29 07:36:05,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3941 to 3919. [2020-10-29 07:36:05,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3919 states. [2020-10-29 07:36:05,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 4825 transitions. [2020-10-29 07:36:05,618 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 4825 transitions. Word has length 500 [2020-10-29 07:36:05,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:05,620 INFO L481 AbstractCegarLoop]: Abstraction has 3919 states and 4825 transitions. [2020-10-29 07:36:05,620 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:36:05,620 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 4825 transitions. [2020-10-29 07:36:05,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 506 [2020-10-29 07:36:05,635 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:05,636 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:05,636 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:36:05,636 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:05,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:05,637 INFO L82 PathProgramCache]: Analyzing trace with hash -1354310812, now seen corresponding path program 1 times [2020-10-29 07:36:05,637 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:05,638 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1434626915] [2020-10-29 07:36:05,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:05,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:05,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:05,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:06,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:10,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:10,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 525 [2020-10-29 07:36:10,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:36:10,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-29 07:36:10,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:10,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-29 07:36:10,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 07:36:10,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:10,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:10,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:10,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:10,914 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:10,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:10,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:10,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:36:10,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:10,915 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:10,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:10,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:10,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:10,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:10,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:10,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:10,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 07:36:10,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:10,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:36:10,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:10,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:10,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:10,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:10,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-29 07:36:11,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:11,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-29 07:36:11,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:11,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 105 [2020-10-29 07:36:11,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-29 07:36:11,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-29 07:36:11,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-29 07:36:11,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,337 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:11,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:11,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-29 07:36:11,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 335 [2020-10-29 07:36:11,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:36:11,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:36:11,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:11,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-29 07:36:11,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:11,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:36:11,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 408 [2020-10-29 07:36:11,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:11,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:11,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:11,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:36:11,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:11,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:36:11,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:11,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:11,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:36:11,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:11,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:11,937 INFO L134 CoverageAnalysis]: Checked inductivity of 889 backedges. 279 proven. 152 refuted. 0 times theorem prover too weak. 458 trivial. 0 not checked. [2020-10-29 07:36:11,938 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1434626915] [2020-10-29 07:36:11,938 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:11,938 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:36:11,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513698502] [2020-10-29 07:36:11,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:36:11,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:11,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:36:11,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:36:11,941 INFO L87 Difference]: Start difference. First operand 3919 states and 4825 transitions. Second operand 8 states. [2020-10-29 07:36:16,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:16,006 INFO L93 Difference]: Finished difference Result 8208 states and 10333 transitions. [2020-10-29 07:36:16,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:36:16,008 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 505 [2020-10-29 07:36:16,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:16,028 INFO L225 Difference]: With dead ends: 8208 [2020-10-29 07:36:16,029 INFO L226 Difference]: Without dead ends: 4477 [2020-10-29 07:36:16,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:36:16,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4477 states. [2020-10-29 07:36:16,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4477 to 3919. [2020-10-29 07:36:16,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3919 states. [2020-10-29 07:36:16,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3919 states to 3919 states and 4794 transitions. [2020-10-29 07:36:16,170 INFO L78 Accepts]: Start accepts. Automaton has 3919 states and 4794 transitions. Word has length 505 [2020-10-29 07:36:16,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:16,171 INFO L481 AbstractCegarLoop]: Abstraction has 3919 states and 4794 transitions. [2020-10-29 07:36:16,171 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:36:16,171 INFO L276 IsEmpty]: Start isEmpty. Operand 3919 states and 4794 transitions. [2020-10-29 07:36:16,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 538 [2020-10-29 07:36:16,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:16,178 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:16,178 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:36:16,179 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:16,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:16,179 INFO L82 PathProgramCache]: Analyzing trace with hash -1275785896, now seen corresponding path program 1 times [2020-10-29 07:36:16,179 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:16,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [201404525] [2020-10-29 07:36:16,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:16,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:16,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:16,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:17,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:18,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:21,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:21,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 555 [2020-10-29 07:36:21,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:36:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-29 07:36:21,325 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:21,325 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:36:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:36:21,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-29 07:36:21,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:21,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:21,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:21,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:21,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:21,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:21,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:21,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:36:21,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:21,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:21,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:21,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:21,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:21,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:21,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:21,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:21,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:21,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:21,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:21,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:36:21,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:21,491 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:21,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:21,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:21,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:21,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:21,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:21,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:21,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:21,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:21,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 07:36:21,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:21,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:21,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:36:21,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:21,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:21,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:21,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:21,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:21,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:21,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:21,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 07:36:21,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:21,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:21,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:21,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:36:21,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:21,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:21,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:21,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:22,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:22,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:22,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:22,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-29 07:36:22,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:22,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:22,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:22,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:36:22,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:22,368 INFO L134 CoverageAnalysis]: Checked inductivity of 720 backedges. 489 proven. 116 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-29 07:36:22,369 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [201404525] [2020-10-29 07:36:22,369 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:22,369 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:36:22,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393548713] [2020-10-29 07:36:22,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:36:22,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:22,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:36:22,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:36:22,372 INFO L87 Difference]: Start difference. First operand 3919 states and 4794 transitions. Second operand 8 states. [2020-10-29 07:36:25,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:25,492 INFO L93 Difference]: Finished difference Result 8966 states and 11264 transitions. [2020-10-29 07:36:25,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:36:25,493 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 537 [2020-10-29 07:36:25,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:25,517 INFO L225 Difference]: With dead ends: 8966 [2020-10-29 07:36:25,517 INFO L226 Difference]: Without dead ends: 5237 [2020-10-29 07:36:25,527 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:36:25,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5237 states. [2020-10-29 07:36:25,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5237 to 5217. [2020-10-29 07:36:25,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5217 states. [2020-10-29 07:36:25,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5217 states to 5217 states and 6398 transitions. [2020-10-29 07:36:25,666 INFO L78 Accepts]: Start accepts. Automaton has 5217 states and 6398 transitions. Word has length 537 [2020-10-29 07:36:25,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:25,668 INFO L481 AbstractCegarLoop]: Abstraction has 5217 states and 6398 transitions. [2020-10-29 07:36:25,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:36:25,668 INFO L276 IsEmpty]: Start isEmpty. Operand 5217 states and 6398 transitions. [2020-10-29 07:36:25,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 596 [2020-10-29 07:36:25,674 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:25,675 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:25,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:36:25,675 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:25,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:25,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1561200760, now seen corresponding path program 1 times [2020-10-29 07:36:25,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:25,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216376349] [2020-10-29 07:36:25,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:25,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:25,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:26,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:26,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:27,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:27,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:28,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:28,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:30,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:30,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 617 [2020-10-29 07:36:30,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 07:36:30,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-29 07:36:30,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:30,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:30,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:36:30,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 231 [2020-10-29 07:36:30,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 278 [2020-10-29 07:36:30,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:30,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:30,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:30,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:30,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:30,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:30,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:36:30,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:30,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:30,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:30,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:30,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:30,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:30,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:31,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:31,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:31,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:36:31,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:31,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:31,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:31,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:31,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:31,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:31,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:31,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:31,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:36:31,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:31,129 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-29 07:36:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:31,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:31,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:31,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:31,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:31,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:31,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:31,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:36:31,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:31,343 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:31,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-29 07:36:31,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:31,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:31,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:31,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:36:31,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:31,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:36:31,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:31,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:31,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:31,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:36:31,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:31,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 07:36:31,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:31,757 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:31,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:36:31,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:31,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 498 [2020-10-29 07:36:31,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:31,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:31,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:31,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:36:31,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-29 07:36:31,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:31,893 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:36:31,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:31,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1350 backedges. 618 proven. 442 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-29 07:36:32,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216376349] [2020-10-29 07:36:32,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:32,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 07:36:32,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920638917] [2020-10-29 07:36:32,590 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:36:32,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:32,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:36:32,591 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:36:32,591 INFO L87 Difference]: Start difference. First operand 5217 states and 6398 transitions. Second operand 9 states. [2020-10-29 07:36:35,289 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:35,289 INFO L93 Difference]: Finished difference Result 10266 states and 12632 transitions. [2020-10-29 07:36:35,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-29 07:36:35,290 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 595 [2020-10-29 07:36:35,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:35,314 INFO L225 Difference]: With dead ends: 10266 [2020-10-29 07:36:35,314 INFO L226 Difference]: Without dead ends: 5239 [2020-10-29 07:36:35,326 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:36:35,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5239 states. [2020-10-29 07:36:35,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5239 to 5033. [2020-10-29 07:36:35,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5033 states. [2020-10-29 07:36:35,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5033 states to 5033 states and 6184 transitions. [2020-10-29 07:36:35,460 INFO L78 Accepts]: Start accepts. Automaton has 5033 states and 6184 transitions. Word has length 595 [2020-10-29 07:36:35,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:35,462 INFO L481 AbstractCegarLoop]: Abstraction has 5033 states and 6184 transitions. [2020-10-29 07:36:35,462 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:36:35,462 INFO L276 IsEmpty]: Start isEmpty. Operand 5033 states and 6184 transitions. [2020-10-29 07:36:35,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 697 [2020-10-29 07:36:35,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:35,471 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:35,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 07:36:35,471 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:35,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:35,472 INFO L82 PathProgramCache]: Analyzing trace with hash 277305552, now seen corresponding path program 1 times [2020-10-29 07:36:35,472 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:35,472 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1561316317] [2020-10-29 07:36:35,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:35,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:35,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:35,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:36,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:39,377 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:39,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 716 [2020-10-29 07:36:39,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:36:39,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3768 [2020-10-29 07:36:39,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:39,378 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:36:39,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 182 [2020-10-29 07:36:39,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:39,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:39,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:39,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:39,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:39,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:39,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:39,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:36:39,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:39,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:39,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:39,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:39,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:39,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:39,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:39,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:39,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:39,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:39,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:39,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:39,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:39,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:36:39,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:39,612 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:39,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:39,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:39,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:39,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:39,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:39,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:39,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:39,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:39,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:36:39,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:39,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:39,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:39,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:39,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:39,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:39,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:36:39,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:39,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 07:36:39,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:39,782 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:39,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:36:39,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:39,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:36:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:39,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:40,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:40,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:40,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-29 07:36:40,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:40,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:40,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:36:40,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 1229 backedges. 568 proven. 2 refuted. 0 times theorem prover too weak. 659 trivial. 0 not checked. [2020-10-29 07:36:40,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1561316317] [2020-10-29 07:36:40,470 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:40,470 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:36:40,470 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52292660] [2020-10-29 07:36:40,471 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:40,471 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:40,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:40,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:40,472 INFO L87 Difference]: Start difference. First operand 5033 states and 6184 transitions. Second operand 7 states. [2020-10-29 07:36:43,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:43,447 INFO L93 Difference]: Finished difference Result 11366 states and 14319 transitions. [2020-10-29 07:36:43,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:36:43,449 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 696 [2020-10-29 07:36:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:43,474 INFO L225 Difference]: With dead ends: 11366 [2020-10-29 07:36:43,474 INFO L226 Difference]: Without dead ends: 6523 [2020-10-29 07:36:43,487 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:36:43,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6523 states. [2020-10-29 07:36:43,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6523 to 6139. [2020-10-29 07:36:43,630 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6139 states. [2020-10-29 07:36:43,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6139 states to 6139 states and 7733 transitions. [2020-10-29 07:36:43,646 INFO L78 Accepts]: Start accepts. Automaton has 6139 states and 7733 transitions. Word has length 696 [2020-10-29 07:36:43,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:43,647 INFO L481 AbstractCegarLoop]: Abstraction has 6139 states and 7733 transitions. [2020-10-29 07:36:43,647 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:36:43,647 INFO L276 IsEmpty]: Start isEmpty. Operand 6139 states and 7733 transitions. [2020-10-29 07:36:43,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 755 [2020-10-29 07:36:43,657 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:43,658 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:43,658 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 07:36:43,658 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:43,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:43,659 INFO L82 PathProgramCache]: Analyzing trace with hash -583500544, now seen corresponding path program 1 times [2020-10-29 07:36:43,659 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:43,659 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1254748195] [2020-10-29 07:36:43,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:43,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:44,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:45,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:46,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:46,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:46,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:48,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:48,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 778 [2020-10-29 07:36:48,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 07:36:48,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-29 07:36:48,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:48,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:36:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:36:48,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-29 07:36:48,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:48,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:48,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:48,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:48,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:48,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:36:48,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:48,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:48,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:48,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:48,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:49,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:49,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:49,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:49,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:49,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:49,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:36:49,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:49,022 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:49,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:49,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:49,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:49,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:49,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:49,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:49,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:49,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:49,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:36:49,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:49,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:49,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:49,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:49,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:49,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:49,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:49,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:49,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:49,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:36:49,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:49,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:49,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:49,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:49,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:49,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:49,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:36:49,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-29 07:36:49,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:49,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:36:49,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:49,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:36:49,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:49,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:49,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:49,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:49,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:36:49,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:36:49,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-29 07:36:49,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:49,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:49,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:36:49,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:49,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2020-10-29 07:36:49,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:49,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:49,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:49,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:36:49,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:36:49,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:49,488 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:36:49,489 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:49,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 657 [2020-10-29 07:36:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:49,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:49,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:49,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:36:49,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:36:49,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:49,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:36:49,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:49,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 1937 backedges. 503 proven. 76 refuted. 0 times theorem prover too weak. 1358 trivial. 0 not checked. [2020-10-29 07:36:49,959 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1254748195] [2020-10-29 07:36:49,959 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:49,959 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:36:49,959 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478235103] [2020-10-29 07:36:49,960 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:36:49,960 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:49,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:36:49,961 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:36:49,961 INFO L87 Difference]: Start difference. First operand 6139 states and 7733 transitions. Second operand 8 states. [2020-10-29 07:36:53,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:36:53,352 INFO L93 Difference]: Finished difference Result 12284 states and 15517 transitions. [2020-10-29 07:36:53,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 07:36:53,358 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 754 [2020-10-29 07:36:53,359 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:36:53,379 INFO L225 Difference]: With dead ends: 12284 [2020-10-29 07:36:53,379 INFO L226 Difference]: Without dead ends: 6335 [2020-10-29 07:36:53,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:36:53,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2020-10-29 07:36:53,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 5773. [2020-10-29 07:36:53,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5773 states. [2020-10-29 07:36:53,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5773 states to 5773 states and 7197 transitions. [2020-10-29 07:36:53,540 INFO L78 Accepts]: Start accepts. Automaton has 5773 states and 7197 transitions. Word has length 754 [2020-10-29 07:36:53,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:36:53,541 INFO L481 AbstractCegarLoop]: Abstraction has 5773 states and 7197 transitions. [2020-10-29 07:36:53,541 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:36:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5773 states and 7197 transitions. [2020-10-29 07:36:53,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 773 [2020-10-29 07:36:53,552 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:36:53,552 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:36:53,553 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 07:36:53,553 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:36:53,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:36:53,554 INFO L82 PathProgramCache]: Analyzing trace with hash -1567701100, now seen corresponding path program 1 times [2020-10-29 07:36:53,554 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:36:53,554 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264382519] [2020-10-29 07:36:53,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:36:53,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:53,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:54,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:55,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:55,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 794 [2020-10-29 07:36:55,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:36:55,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2142 [2020-10-29 07:36:55,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:55,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 511 [2020-10-29 07:36:55,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 07:36:55,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:56,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:36:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:56,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:56,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:56,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:36:56,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:56,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:36:56,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:56,099 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:56,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:56,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:56,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:36:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:56,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:56,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:56,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:36:56,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:36:56,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:56,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:56,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:56,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:56,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:36:56,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:56,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:56,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:56,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:36:56,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:56,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:36:56,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:56,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:56,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:56,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:56,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:56,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:36:56,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:56,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:56,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:56,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:36:56,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:56,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:36:56,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:56,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:56,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:56,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:56,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:36:56,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:56,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:56,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:56,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:36:56,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:56,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-29 07:36:56,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:56,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:56,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:36:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:36:56,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:36:56,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:56,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:36:56,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:56,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:56,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:56,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:36:56,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 07:36:56,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:56,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:36:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:36:56,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-29 07:36:56,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:56,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 579 [2020-10-29 07:36:56,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:36:56,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:36:56,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:36:56,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:36:56,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:36:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-29 07:36:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:36:56,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:36:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:36:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-29 07:36:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:36:56,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:36:57,042 INFO L134 CoverageAnalysis]: Checked inductivity of 1623 backedges. 407 proven. 75 refuted. 0 times theorem prover too weak. 1141 trivial. 0 not checked. [2020-10-29 07:36:57,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264382519] [2020-10-29 07:36:57,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:36:57,043 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:36:57,043 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1045210907] [2020-10-29 07:36:57,044 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:36:57,044 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:36:57,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:36:57,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:36:57,045 INFO L87 Difference]: Start difference. First operand 5773 states and 7197 transitions. Second operand 7 states. [2020-10-29 07:37:00,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:00,027 INFO L93 Difference]: Finished difference Result 12668 states and 16247 transitions. [2020-10-29 07:37:00,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:37:00,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 772 [2020-10-29 07:37:00,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:00,049 INFO L225 Difference]: With dead ends: 12668 [2020-10-29 07:37:00,049 INFO L226 Difference]: Without dead ends: 7085 [2020-10-29 07:37:00,062 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:37:00,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7085 states. [2020-10-29 07:37:00,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7085 to 6713. [2020-10-29 07:37:00,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6713 states. [2020-10-29 07:37:00,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6713 states to 6713 states and 8314 transitions. [2020-10-29 07:37:00,207 INFO L78 Accepts]: Start accepts. Automaton has 6713 states and 8314 transitions. Word has length 772 [2020-10-29 07:37:00,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:00,208 INFO L481 AbstractCegarLoop]: Abstraction has 6713 states and 8314 transitions. [2020-10-29 07:37:00,208 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:37:00,208 INFO L276 IsEmpty]: Start isEmpty. Operand 6713 states and 8314 transitions. [2020-10-29 07:37:00,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 795 [2020-10-29 07:37:00,219 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:00,219 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:00,220 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 07:37:00,220 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:00,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:00,220 INFO L82 PathProgramCache]: Analyzing trace with hash 82700992, now seen corresponding path program 1 times [2020-10-29 07:37:00,221 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:00,221 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943856759] [2020-10-29 07:37:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:00,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:00,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:00,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:00,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:02,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:03,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:05,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:05,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 816 [2020-10-29 07:37:05,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:37:05,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 07:37:05,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:05,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:05,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:05,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 529 [2020-10-29 07:37:05,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 179 [2020-10-29 07:37:05,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:05,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:05,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:05,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:05,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:05,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:05,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:37:05,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:05,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:05,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:05,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:05,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:05,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:05,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:05,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:05,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:05,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:05,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:37:05,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:05,608 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:05,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:05,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:05,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:05,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:05,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:05,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:05,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:05,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:05,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:37:05,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:05,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:05,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:05,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:05,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:05,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:05,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:05,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:05,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:05,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:37:05,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:05,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:05,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:05,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:05,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:05,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:05,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:05,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:05,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:05,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:05,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:05,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-29 07:37:05,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:05,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:05,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 07:37:05,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:05,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:37:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:05,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:06,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:06,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 07:37:06,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:06,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-29 07:37:06,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:06,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:06,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-29 07:37:06,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:06,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 697 [2020-10-29 07:37:06,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:06,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:06,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:06,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:37:06,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:06,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-29 07:37:06,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:06,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:06,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:06,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:37:06,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:06,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:07,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1675 backedges. 615 proven. 82 refuted. 0 times theorem prover too weak. 978 trivial. 0 not checked. [2020-10-29 07:37:07,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943856759] [2020-10-29 07:37:07,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:07,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 07:37:07,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342321504] [2020-10-29 07:37:07,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:37:07,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:07,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:37:07,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:37:07,040 INFO L87 Difference]: Start difference. First operand 6713 states and 8314 transitions. Second operand 8 states. [2020-10-29 07:37:09,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:09,869 INFO L93 Difference]: Finished difference Result 14888 states and 18440 transitions. [2020-10-29 07:37:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:37:09,879 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 794 [2020-10-29 07:37:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:09,914 INFO L225 Difference]: With dead ends: 14888 [2020-10-29 07:37:09,914 INFO L226 Difference]: Without dead ends: 8365 [2020-10-29 07:37:09,930 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-29 07:37:09,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8365 states. [2020-10-29 07:37:10,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8365 to 8181. [2020-10-29 07:37:10,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8181 states. [2020-10-29 07:37:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8181 states to 8181 states and 10075 transitions. [2020-10-29 07:37:10,109 INFO L78 Accepts]: Start accepts. Automaton has 8181 states and 10075 transitions. Word has length 794 [2020-10-29 07:37:10,109 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:10,110 INFO L481 AbstractCegarLoop]: Abstraction has 8181 states and 10075 transitions. [2020-10-29 07:37:10,110 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:37:10,110 INFO L276 IsEmpty]: Start isEmpty. Operand 8181 states and 10075 transitions. [2020-10-29 07:37:10,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 809 [2020-10-29 07:37:10,121 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:10,122 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:10,122 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 07:37:10,122 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:10,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:10,123 INFO L82 PathProgramCache]: Analyzing trace with hash -1881779704, now seen corresponding path program 1 times [2020-10-29 07:37:10,123 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:10,124 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1047478215] [2020-10-29 07:37:10,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:10,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:10,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:10,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:12,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:15,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:15,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 832 [2020-10-29 07:37:15,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:37:15,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-29 07:37:15,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:15,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 350 [2020-10-29 07:37:15,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:37:15,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:15,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:15,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:15,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:15,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:15,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:15,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:15,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:15,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:15,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:37:15,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:15,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:15,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:15,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:15,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:15,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:15,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:15,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:15,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:15,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:15,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:37:15,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:15,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:15,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:15,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:15,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:15,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:15,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:15,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:15,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:15,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:37:15,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:15,614 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:15,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-29 07:37:15,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:15,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:15,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:15,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:15,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:15,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:15,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 07:37:15,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:15,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:15,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:37:15,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:15,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 521 [2020-10-29 07:37:15,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:15,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:15,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:15,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:15,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:15,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:37:15,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:15,907 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 74 [2020-10-29 07:37:15,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:15,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:15,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 597 [2020-10-29 07:37:15,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:15,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:15,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:15,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:37:15,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:15,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:37:15,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:15,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 112 [2020-10-29 07:37:15,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:15,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:16,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 711 [2020-10-29 07:37:16,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:16,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:16,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:16,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:37:16,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 07:37:16,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:16,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-10-29 07:37:16,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:16,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:16,459 INFO L134 CoverageAnalysis]: Checked inductivity of 2080 backedges. 471 proven. 266 refuted. 0 times theorem prover too weak. 1343 trivial. 0 not checked. [2020-10-29 07:37:16,459 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1047478215] [2020-10-29 07:37:16,460 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:16,460 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:37:16,460 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299195756] [2020-10-29 07:37:16,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:37:16,461 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:16,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:37:16,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:37:16,461 INFO L87 Difference]: Start difference. First operand 8181 states and 10075 transitions. Second operand 7 states. [2020-10-29 07:37:19,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:19,646 INFO L93 Difference]: Finished difference Result 16368 states and 20326 transitions. [2020-10-29 07:37:19,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 07:37:19,647 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 808 [2020-10-29 07:37:19,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:19,672 INFO L225 Difference]: With dead ends: 16368 [2020-10-29 07:37:19,672 INFO L226 Difference]: Without dead ends: 8377 [2020-10-29 07:37:19,688 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:37:19,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8377 states. [2020-10-29 07:37:19,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8377 to 7279. [2020-10-29 07:37:19,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7279 states. [2020-10-29 07:37:19,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7279 states to 7279 states and 8869 transitions. [2020-10-29 07:37:19,860 INFO L78 Accepts]: Start accepts. Automaton has 7279 states and 8869 transitions. Word has length 808 [2020-10-29 07:37:19,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:19,860 INFO L481 AbstractCegarLoop]: Abstraction has 7279 states and 8869 transitions. [2020-10-29 07:37:19,860 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:37:19,860 INFO L276 IsEmpty]: Start isEmpty. Operand 7279 states and 8869 transitions. [2020-10-29 07:37:19,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 890 [2020-10-29 07:37:19,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:19,874 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:19,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 07:37:19,874 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:19,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:19,875 INFO L82 PathProgramCache]: Analyzing trace with hash 1273644076, now seen corresponding path program 1 times [2020-10-29 07:37:19,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:19,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176864177] [2020-10-29 07:37:19,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:20,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:20,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:20,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:23,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 915 [2020-10-29 07:37:25,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:37:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 07:37:25,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:37:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:37:25,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 152 [2020-10-29 07:37:25,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:25,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:25,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:37:25,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:25,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:25,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:25,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:37:25,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:25,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:25,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:25,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 07:37:25,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:25,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:25,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:25,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:25,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:37:25,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:25,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:25,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:37:25,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:37:25,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:37:25,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:25,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:37:25,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:25,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:25,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:25,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:37:25,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:25,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-29 07:37:25,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:25,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:37:25,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:37:25,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:25,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-29 07:37:25,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-29 07:37:25,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:25,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:37:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:25,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-29 07:37:25,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:25,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 792 [2020-10-29 07:37:25,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:25,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:25,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:26,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:26,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:37:26,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:37:26,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 07:37:26,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:26,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:26,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:37:26,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:26,892 INFO L134 CoverageAnalysis]: Checked inductivity of 2656 backedges. 1234 proven. 56 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-29 07:37:26,892 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176864177] [2020-10-29 07:37:26,892 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:26,892 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 07:37:26,893 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653192339] [2020-10-29 07:37:26,894 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 07:37:26,894 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:26,894 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 07:37:26,894 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-29 07:37:26,894 INFO L87 Difference]: Start difference. First operand 7279 states and 8869 transitions. Second operand 9 states. [2020-10-29 07:37:28,732 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 74 [2020-10-29 07:37:31,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:31,297 INFO L93 Difference]: Finished difference Result 16528 states and 20650 transitions. [2020-10-29 07:37:31,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 07:37:31,299 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 889 [2020-10-29 07:37:31,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:31,325 INFO L225 Difference]: With dead ends: 16528 [2020-10-29 07:37:31,325 INFO L226 Difference]: Without dead ends: 9169 [2020-10-29 07:37:31,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=86, Invalid=256, Unknown=0, NotChecked=0, Total=342 [2020-10-29 07:37:31,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9169 states. [2020-10-29 07:37:31,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9169 to 8759. [2020-10-29 07:37:31,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8759 states. [2020-10-29 07:37:31,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8759 states to 8759 states and 10664 transitions. [2020-10-29 07:37:31,535 INFO L78 Accepts]: Start accepts. Automaton has 8759 states and 10664 transitions. Word has length 889 [2020-10-29 07:37:31,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:31,536 INFO L481 AbstractCegarLoop]: Abstraction has 8759 states and 10664 transitions. [2020-10-29 07:37:31,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 07:37:31,536 INFO L276 IsEmpty]: Start isEmpty. Operand 8759 states and 10664 transitions. [2020-10-29 07:37:31,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 923 [2020-10-29 07:37:31,550 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:31,551 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:31,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 07:37:31,551 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:31,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:31,552 INFO L82 PathProgramCache]: Analyzing trace with hash -1030807820, now seen corresponding path program 1 times [2020-10-29 07:37:31,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:31,553 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1152713115] [2020-10-29 07:37:31,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:31,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:31,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:31,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:35,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:36,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:36,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:36,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 948 [2020-10-29 07:37:36,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 07:37:36,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-10-29 07:37:36,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:36,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:37:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:37:36,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 185 [2020-10-29 07:37:36,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:36,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:36,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:36,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:36,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:36,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:37:36,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:36,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:36,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:36,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:36,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:36,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:36,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:37,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:37,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:37,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-29 07:37:37,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:37,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:37,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:37,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:37,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:37,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:37,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:37,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:37,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-29 07:37:37,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:37,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:37,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:37,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:37,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:37,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:37,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:37,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:37,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:37,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:37:37,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:37,115 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:37,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:37,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:37,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:37,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:37,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:37:37,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:37,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:37:37,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:37,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:37,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:37,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:37,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:37,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:37,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:37:37,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:37,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:37,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:37,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:37:37,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:37,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:37,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:37,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:37,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:37:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:37,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:37,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:37,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:37,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:37:37,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:37,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:37,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:37:37,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:37,297 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:37:37,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:37,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 07:37:37,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:37,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 07:37:37,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:37,698 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:37:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:37,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-10-29 07:37:37,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:37:37,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 825 [2020-10-29 07:37:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:37,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:37,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:38,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:38,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:37:38,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:37:38,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-29 07:37:38,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:38,045 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:38,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:38,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:38,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:37:38,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:38,874 INFO L134 CoverageAnalysis]: Checked inductivity of 2692 backedges. 1244 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-29 07:37:38,874 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1152713115] [2020-10-29 07:37:38,875 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:38,875 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:37:38,875 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105719564] [2020-10-29 07:37:38,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:37:38,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:38,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:37:38,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:37:38,880 INFO L87 Difference]: Start difference. First operand 8759 states and 10664 transitions. Second operand 10 states. [2020-10-29 07:37:43,116 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 70 [2020-10-29 07:37:43,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:43,524 INFO L93 Difference]: Finished difference Result 18160 states and 22161 transitions. [2020-10-29 07:37:43,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 07:37:43,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 922 [2020-10-29 07:37:43,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:43,552 INFO L225 Difference]: With dead ends: 18160 [2020-10-29 07:37:43,552 INFO L226 Difference]: Without dead ends: 9337 [2020-10-29 07:37:43,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=149, Invalid=403, Unknown=0, NotChecked=0, Total=552 [2020-10-29 07:37:43,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9337 states. [2020-10-29 07:37:43,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9337 to 9321. [2020-10-29 07:37:43,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9321 states. [2020-10-29 07:37:43,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9321 states to 9321 states and 11276 transitions. [2020-10-29 07:37:43,772 INFO L78 Accepts]: Start accepts. Automaton has 9321 states and 11276 transitions. Word has length 922 [2020-10-29 07:37:43,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:43,773 INFO L481 AbstractCegarLoop]: Abstraction has 9321 states and 11276 transitions. [2020-10-29 07:37:43,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:37:43,773 INFO L276 IsEmpty]: Start isEmpty. Operand 9321 states and 11276 transitions. [2020-10-29 07:37:43,787 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 924 [2020-10-29 07:37:43,788 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:43,788 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:43,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 07:37:43,789 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:43,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:43,789 INFO L82 PathProgramCache]: Analyzing trace with hash 211661424, now seen corresponding path program 1 times [2020-10-29 07:37:43,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:43,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1491432393] [2020-10-29 07:37:43,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:43,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:44,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:44,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:48,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:49,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:49,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 949 [2020-10-29 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5130 [2020-10-29 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 186 [2020-10-29 07:37:49,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:49,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:37:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:49,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:49,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:49,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:37:49,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:49,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:49,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:37:49,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:49,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:37:49,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:49,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:49,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:49,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:49,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:37:49,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:49,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:49,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:49,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:37:49,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:49,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:37:49,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:49,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:49,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:49,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:49,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:37:49,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:49,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:49,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:49,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:37:49,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:49,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:37:49,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:49,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:49,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:49,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:49,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:37:49,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:49,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:49,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:49,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:37:49,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:49,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:37:49,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:49,425 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:49,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:49,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:49,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:37:49,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:49,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:49,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:49,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:37:49,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:49,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-29 07:37:49,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:49,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:37:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:49,488 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:37:49,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:49,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:37:49,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:49,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:49,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:49,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:37:49,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:49,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 07:37:49,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:49,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:37:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:37:49,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:37:49,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:37:49,588 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:37:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:49,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:49,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:49,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:37:49,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:37:49,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-29 07:37:49,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:49,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:49,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:37:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:49,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:37:49,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:37:50,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 826 [2020-10-29 07:37:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:50,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:50,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:50,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:37:50,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:37:50,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:37:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-29 07:37:50,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:37:50,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:37:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:37:50,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:37:50,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:37:50,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:37:51,307 INFO L134 CoverageAnalysis]: Checked inductivity of 2693 backedges. 1245 proven. 82 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-29 07:37:51,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1491432393] [2020-10-29 07:37:51,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:37:51,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:37:51,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147963290] [2020-10-29 07:37:51,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:37:51,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:37:51,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:37:51,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:37:51,310 INFO L87 Difference]: Start difference. First operand 9321 states and 11276 transitions. Second operand 10 states. [2020-10-29 07:37:55,999 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:37:55,999 INFO L93 Difference]: Finished difference Result 18796 states and 22837 transitions. [2020-10-29 07:37:56,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-29 07:37:56,000 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 923 [2020-10-29 07:37:56,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:37:56,024 INFO L225 Difference]: With dead ends: 18796 [2020-10-29 07:37:56,025 INFO L226 Difference]: Without dead ends: 9325 [2020-10-29 07:37:56,039 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=167, Invalid=483, Unknown=0, NotChecked=0, Total=650 [2020-10-29 07:37:56,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9325 states. [2020-10-29 07:37:56,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9325 to 9127. [2020-10-29 07:37:56,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9127 states. [2020-10-29 07:37:56,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9127 states to 9127 states and 10675 transitions. [2020-10-29 07:37:56,243 INFO L78 Accepts]: Start accepts. Automaton has 9127 states and 10675 transitions. Word has length 923 [2020-10-29 07:37:56,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:37:56,245 INFO L481 AbstractCegarLoop]: Abstraction has 9127 states and 10675 transitions. [2020-10-29 07:37:56,245 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:37:56,245 INFO L276 IsEmpty]: Start isEmpty. Operand 9127 states and 10675 transitions. [2020-10-29 07:37:56,260 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 950 [2020-10-29 07:37:56,261 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:37:56,261 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:37:56,262 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 07:37:56,262 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:37:56,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:37:56,263 INFO L82 PathProgramCache]: Analyzing trace with hash -1904395456, now seen corresponding path program 1 times [2020-10-29 07:37:56,263 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:37:56,263 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1647574735] [2020-10-29 07:37:56,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:37:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:37:56,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:57,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:57,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:37:59,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:01,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:01,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 973 [2020-10-29 07:38:01,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:38:01,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 07:38:01,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:01,458 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 864 [2020-10-29 07:38:01,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 07:38:01,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:01,622 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:01,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:01,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:01,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:01,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:01,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:01,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:38:01,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:01,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:01,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:01,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:01,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:01,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:01,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:01,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:01,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:01,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:01,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:01,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:38:01,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:01,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:01,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:01,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:01,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:01,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:01,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:01,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:01,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:01,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:01,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:38:01,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:01,711 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:01,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:01,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:01,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:01,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:01,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:01,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:01,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 07:38:01,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:01,754 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:01,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:01,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:01,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:38:01,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:01,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 07:38:01,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:01,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:01,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:01,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:01,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:01,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:38:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:01,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:01,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:01,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 07:38:01,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-29 07:38:01,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:01,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:01,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:01,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:01,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:01,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:01,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-29 07:38:01,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:01,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:02,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:02,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-29 07:38:02,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:02,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 07:38:02,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:02,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:02,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:02,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-29 07:38:02,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:02,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 852 [2020-10-29 07:38:02,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:02,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:02,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:02,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:38:02,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:02,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-29 07:38:02,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:02,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:02,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:38:02,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:02,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2423 backedges. 603 proven. 2 refuted. 0 times theorem prover too weak. 1818 trivial. 0 not checked. [2020-10-29 07:38:02,990 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1647574735] [2020-10-29 07:38:02,990 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:02,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:38:02,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312019721] [2020-10-29 07:38:02,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:38:02,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:02,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:38:02,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:38:02,992 INFO L87 Difference]: Start difference. First operand 9127 states and 10675 transitions. Second operand 7 states. [2020-10-29 07:38:05,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:05,540 INFO L93 Difference]: Finished difference Result 18444 states and 21579 transitions. [2020-10-29 07:38:05,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:38:05,541 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 949 [2020-10-29 07:38:05,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:05,558 INFO L225 Difference]: With dead ends: 18444 [2020-10-29 07:38:05,558 INFO L226 Difference]: Without dead ends: 9323 [2020-10-29 07:38:05,569 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:38:05,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9323 states. [2020-10-29 07:38:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9323 to 9311. [2020-10-29 07:38:05,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9311 states. [2020-10-29 07:38:05,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9311 states to 9311 states and 10858 transitions. [2020-10-29 07:38:05,745 INFO L78 Accepts]: Start accepts. Automaton has 9311 states and 10858 transitions. Word has length 949 [2020-10-29 07:38:05,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:05,746 INFO L481 AbstractCegarLoop]: Abstraction has 9311 states and 10858 transitions. [2020-10-29 07:38:05,746 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:38:05,747 INFO L276 IsEmpty]: Start isEmpty. Operand 9311 states and 10858 transitions. [2020-10-29 07:38:05,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 958 [2020-10-29 07:38:05,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:05,765 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:38:05,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 07:38:05,765 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:05,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:05,766 INFO L82 PathProgramCache]: Analyzing trace with hash 1188956804, now seen corresponding path program 1 times [2020-10-29 07:38:05,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:05,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514023117] [2020-10-29 07:38:05,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:06,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 983 [2020-10-29 07:38:07,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1257 [2020-10-29 07:38:07,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:38:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 690 [2020-10-29 07:38:07,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 270 [2020-10-29 07:38:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:07,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:38:07,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:07,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:07,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:07,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:07,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:07,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:07,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:07,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:07,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:07,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:07,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:07,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:38:07,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:07,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:38:07,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:38:07,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:07,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:38:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:07,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 07:38:07,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,622 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:07,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:38:07,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:07,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:07,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:38:07,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-29 07:38:07,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:07,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:07,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-29 07:38:07,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:07,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:38:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:07,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:08,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:08,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:08,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-10-29 07:38:08,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:08,161 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:38:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:38:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:08,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:38:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:08,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:08,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:08,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 07:38:08,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:08,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-29 07:38:08,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:08,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:08,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 07:38:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:08,981 INFO L134 CoverageAnalysis]: Checked inductivity of 2737 backedges. 1286 proven. 85 refuted. 0 times theorem prover too weak. 1366 trivial. 0 not checked. [2020-10-29 07:38:08,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514023117] [2020-10-29 07:38:08,982 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:08,982 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:38:08,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384611204] [2020-10-29 07:38:08,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:38:08,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:08,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:38:08,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:38:08,984 INFO L87 Difference]: Start difference. First operand 9311 states and 10858 transitions. Second operand 10 states. [2020-10-29 07:38:13,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:13,840 INFO L93 Difference]: Finished difference Result 19187 states and 22313 transitions. [2020-10-29 07:38:13,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 07:38:13,841 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 957 [2020-10-29 07:38:13,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:13,865 INFO L225 Difference]: With dead ends: 19187 [2020-10-29 07:38:13,866 INFO L226 Difference]: Without dead ends: 9882 [2020-10-29 07:38:13,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=372, Unknown=0, NotChecked=0, Total=506 [2020-10-29 07:38:13,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9882 states. [2020-10-29 07:38:14,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9882 to 9865. [2020-10-29 07:38:14,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9865 states. [2020-10-29 07:38:14,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9865 states to 9865 states and 11402 transitions. [2020-10-29 07:38:14,116 INFO L78 Accepts]: Start accepts. Automaton has 9865 states and 11402 transitions. Word has length 957 [2020-10-29 07:38:14,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:14,117 INFO L481 AbstractCegarLoop]: Abstraction has 9865 states and 11402 transitions. [2020-10-29 07:38:14,117 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:38:14,117 INFO L276 IsEmpty]: Start isEmpty. Operand 9865 states and 11402 transitions. [2020-10-29 07:38:14,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-29 07:38:14,135 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:14,136 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:38:14,137 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 07:38:14,137 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:14,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:14,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1611697596, now seen corresponding path program 1 times [2020-10-29 07:38:14,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:14,138 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1847774751] [2020-10-29 07:38:14,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:14,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:14,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:15,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,503 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-29 07:38:16,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:38:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2193 [2020-10-29 07:38:16,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:38:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 871 [2020-10-29 07:38:16,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:38:16,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:16,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,670 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:16,670 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:38:16,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:16,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:16,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 07:38:16,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:16,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:16,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:38:16,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,753 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:16,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:16,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:38:16,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 07:38:16,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 425 [2020-10-29 07:38:16,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:38:16,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:38:16,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,879 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 602 [2020-10-29 07:38:16,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:16,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:16,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:16,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-29 07:38:16,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:38:16,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:16,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:16,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 678 [2020-10-29 07:38:16,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:17,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:17,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:17,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-29 07:38:17,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-29 07:38:17,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:17,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:17,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-10-29 07:38:17,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:17,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 857 [2020-10-29 07:38:17,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:17,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:17,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:17,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:17,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-29 07:38:17,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:38:17,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 07:38:17,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:17,305 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:17,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 07:38:17,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:17,858 INFO L134 CoverageAnalysis]: Checked inductivity of 2879 backedges. 158 proven. 8 refuted. 0 times theorem prover too weak. 2713 trivial. 0 not checked. [2020-10-29 07:38:17,859 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1847774751] [2020-10-29 07:38:17,859 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:17,859 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:38:17,859 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1959375324] [2020-10-29 07:38:17,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:38:17,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:17,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:38:17,861 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:38:17,861 INFO L87 Difference]: Start difference. First operand 9865 states and 11402 transitions. Second operand 5 states. [2020-10-29 07:38:20,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:20,255 INFO L93 Difference]: Finished difference Result 20642 states and 24192 transitions. [2020-10-29 07:38:20,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:38:20,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 989 [2020-10-29 07:38:20,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:20,277 INFO L225 Difference]: With dead ends: 20642 [2020-10-29 07:38:20,277 INFO L226 Difference]: Without dead ends: 10783 [2020-10-29 07:38:20,289 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:38:20,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10783 states. [2020-10-29 07:38:20,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10783 to 10229. [2020-10-29 07:38:20,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10229 states. [2020-10-29 07:38:20,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10229 states to 10229 states and 11948 transitions. [2020-10-29 07:38:20,539 INFO L78 Accepts]: Start accepts. Automaton has 10229 states and 11948 transitions. Word has length 989 [2020-10-29 07:38:20,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:20,542 INFO L481 AbstractCegarLoop]: Abstraction has 10229 states and 11948 transitions. [2020-10-29 07:38:20,542 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:38:20,542 INFO L276 IsEmpty]: Start isEmpty. Operand 10229 states and 11948 transitions. [2020-10-29 07:38:20,558 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-29 07:38:20,558 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:20,559 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:38:20,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 07:38:20,559 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:20,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:20,560 INFO L82 PathProgramCache]: Analyzing trace with hash 298623704, now seen corresponding path program 1 times [2020-10-29 07:38:20,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:20,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1723852327] [2020-10-29 07:38:20,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:20,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:20,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:25,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:25,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1034 [2020-10-29 07:38:25,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:38:25,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5223 [2020-10-29 07:38:25,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:25,991 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 07:38:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 850 [2020-10-29 07:38:25,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-29 07:38:25,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:26,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:38:26,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:26,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:26,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:26,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:38:26,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:26,265 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 07:38:26,265 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:26,265 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:26,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:26,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:26,266 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:26,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:38:26,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:26,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:26,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:26,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 07:38:26,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:26,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:38:26,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:26,315 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:26,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:26,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:26,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-29 07:38:26,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:26,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:26,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-29 07:38:26,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:26,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:38:26,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:26,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:26,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:26,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:26,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2020-10-29 07:38:26,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:26,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:26,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:26,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-29 07:38:26,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:26,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-29 07:38:26,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:26,565 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:26,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:26,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:26,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 344 [2020-10-29 07:38:26,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:26,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:26,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:26,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 160 [2020-10-29 07:38:26,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:26,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 07:38:26,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:26,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:26,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:26,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:26,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 503 [2020-10-29 07:38:26,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:26,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:26,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:26,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 07:38:26,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:26,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-29 07:38:26,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:26,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:26,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:38:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:26,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:38:26,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:26,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 676 [2020-10-29 07:38:26,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:26,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:26,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:26,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-29 07:38:26,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 07:38:26,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:26,968 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:38:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:38:26,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-10-29 07:38:26,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:27,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 838 [2020-10-29 07:38:27,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:27,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:27,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:27,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:38:27,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:38:27,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-29 07:38:27,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:27,070 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 07:38:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:27,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 07:38:27,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:27,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 911 [2020-10-29 07:38:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:27,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:27,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:27,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:38:27,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:38:27,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:38:27,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-29 07:38:27,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:38:27,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:38:27,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:38:27,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:38:27,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-29 07:38:27,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:38:28,146 INFO L134 CoverageAnalysis]: Checked inductivity of 2937 backedges. 1051 proven. 72 refuted. 0 times theorem prover too weak. 1814 trivial. 0 not checked. [2020-10-29 07:38:28,146 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1723852327] [2020-10-29 07:38:28,146 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:38:28,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 07:38:28,147 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833348944] [2020-10-29 07:38:28,147 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 07:38:28,147 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:38:28,148 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 07:38:28,148 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-29 07:38:28,148 INFO L87 Difference]: Start difference. First operand 10229 states and 11948 transitions. Second operand 10 states. [2020-10-29 07:38:32,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:38:32,471 INFO L93 Difference]: Finished difference Result 22739 states and 26999 transitions. [2020-10-29 07:38:32,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 07:38:32,474 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 1008 [2020-10-29 07:38:32,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:38:32,508 INFO L225 Difference]: With dead ends: 22739 [2020-10-29 07:38:32,508 INFO L226 Difference]: Without dead ends: 12341 [2020-10-29 07:38:32,524 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 132 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=169, Invalid=481, Unknown=0, NotChecked=0, Total=650 [2020-10-29 07:38:32,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12341 states. [2020-10-29 07:38:32,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12341 to 12249. [2020-10-29 07:38:32,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12249 states. [2020-10-29 07:38:32,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12249 states to 12249 states and 14378 transitions. [2020-10-29 07:38:32,781 INFO L78 Accepts]: Start accepts. Automaton has 12249 states and 14378 transitions. Word has length 1008 [2020-10-29 07:38:32,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:38:32,782 INFO L481 AbstractCegarLoop]: Abstraction has 12249 states and 14378 transitions. [2020-10-29 07:38:32,782 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 07:38:32,782 INFO L276 IsEmpty]: Start isEmpty. Operand 12249 states and 14378 transitions. [2020-10-29 07:38:32,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1118 [2020-10-29 07:38:32,803 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:38:32,804 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:38:32,804 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 07:38:32,804 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:38:32,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:38:32,805 INFO L82 PathProgramCache]: Analyzing trace with hash 359406220, now seen corresponding path program 1 times [2020-10-29 07:38:32,805 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:38:32,810 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1154889757] [2020-10-29 07:38:32,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:38:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:38:33,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:38:33,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking...