/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/array-cav19/array_init_var_plus_ind.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 03:15:18,686 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 03:15:18,689 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 03:15:18,730 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 03:15:18,731 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 03:15:18,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 03:15:18,734 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 03:15:18,737 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 03:15:18,739 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 03:15:18,740 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 03:15:18,741 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 03:15:18,743 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 03:15:18,743 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 03:15:18,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 03:15:18,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 03:15:18,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 03:15:18,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 03:15:18,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 03:15:18,751 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 03:15:18,753 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 03:15:18,755 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 03:15:18,757 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 03:15:18,758 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 03:15:18,759 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 03:15:18,763 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 03:15:18,763 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 03:15:18,763 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 03:15:18,764 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 03:15:18,765 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 03:15:18,766 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 03:15:18,766 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 03:15:18,767 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 03:15:18,772 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 03:15:18,773 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 03:15:18,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 03:15:18,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 03:15:18,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 03:15:18,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 03:15:18,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 03:15:18,779 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 03:15:18,780 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 03:15:18,782 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 03:15:18,839 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 03:15:18,840 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 03:15:18,843 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 03:15:18,844 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 03:15:18,844 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 03:15:18,846 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 03:15:18,846 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 03:15:18,846 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 03:15:18,846 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 03:15:18,846 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 03:15:18,847 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 03:15:18,847 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 03:15:18,848 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 03:15:18,849 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 03:15:18,849 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 03:15:18,849 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 03:15:18,849 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 03:15:18,849 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 03:15:18,850 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 03:15:18,850 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 03:15:18,850 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 03:15:18,851 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 03:15:18,851 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 03:15:18,851 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 03:15:18,852 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 03:15:18,852 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 03:15:18,852 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 03:15:18,852 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 03:15:18,852 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 03:15:18,853 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 03:15:19,278 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 03:15:19,311 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 03:15:19,316 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 03:15:19,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 03:15:19,319 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 03:15:19,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-cav19/array_init_var_plus_ind.c [2020-10-29 03:15:19,419 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32abc502/0c49cb5521bb4b05b55fba2c8df1aae1/FLAG4d51c9659 [2020-10-29 03:15:20,080 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 03:15:20,080 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-cav19/array_init_var_plus_ind.c [2020-10-29 03:15:20,089 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32abc502/0c49cb5521bb4b05b55fba2c8df1aae1/FLAG4d51c9659 [2020-10-29 03:15:20,426 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a32abc502/0c49cb5521bb4b05b55fba2c8df1aae1 [2020-10-29 03:15:20,431 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 03:15:20,440 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 03:15:20,445 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,445 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 03:15:20,449 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 03:15:20,450 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,455 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@139b64ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20, skipping insertion in model container [2020-10-29 03:15:20,455 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,463 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 03:15:20,480 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 03:15:20,638 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,646 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 03:15:20,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 03:15:20,683 INFO L208 MainTranslator]: Completed translation [2020-10-29 03:15:20,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20 WrapperNode [2020-10-29 03:15:20,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 03:15:20,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 03:15:20,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 03:15:20,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,708 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,708 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,715 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,720 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (1/1) ... [2020-10-29 03:15:20,724 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 03:15:20,725 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 03:15:20,725 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 03:15:20,725 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 03:15:20,726 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (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 03:15:20,803 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 03:15:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 03:15:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 03:15:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-29 03:15:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 03:15:20,804 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 03:15:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 03:15:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 03:15:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 03:15:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 03:15:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-29 03:15:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 03:15:20,805 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 03:15:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 03:15:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 03:15:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 03:15:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 03:15:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 03:15:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 03:15:20,806 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 03:15:21,329 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 03:15:21,329 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-29 03:15:21,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:21 BoogieIcfgContainer [2020-10-29 03:15:21,332 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 03:15:21,336 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 03:15:21,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 03:15:21,340 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 03:15:21,341 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 03:15:20" (1/3) ... [2020-10-29 03:15:21,342 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0032e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:21, skipping insertion in model container [2020-10-29 03:15:21,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 03:15:20" (2/3) ... [2020-10-29 03:15:21,344 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f0032e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 03:15:21, skipping insertion in model container [2020-10-29 03:15:21,344 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 03:15:21" (3/3) ... [2020-10-29 03:15:21,347 INFO L111 eAbstractionObserver]: Analyzing ICFG array_init_var_plus_ind.c [2020-10-29 03:15:21,380 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 03:15:21,386 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 03:15:21,402 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 03:15:21,452 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 03:15:21,453 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 03:15:21,453 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 03:15:21,453 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 03:15:21,453 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 03:15:21,454 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 03:15:21,454 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 03:15:21,454 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 03:15:21,483 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states. [2020-10-29 03:15:21,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-29 03:15:21,494 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:21,495 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:21,496 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:21,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:21,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1582220556, now seen corresponding path program 1 times [2020-10-29 03:15:21,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:21,523 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755690335] [2020-10-29 03:15:21,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:21,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:21,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:21,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-29 03:15:22,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:22,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 562 [2020-10-29 03:15:22,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:15:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:22,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:15:22,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 03:15:22,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:22,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:22,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:22,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:22,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:22,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 03:15:22,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:22,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:22,548 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 03:15:22,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755690335] [2020-10-29 03:15:22,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:15:22,553 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 03:15:22,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [785930073] [2020-10-29 03:15:22,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:15:22,562 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:22,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:15:22,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:15:22,589 INFO L87 Difference]: Start difference. First operand 29 states. Second operand 5 states. [2020-10-29 03:15:22,904 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:22,904 INFO L93 Difference]: Finished difference Result 57 states and 73 transitions. [2020-10-29 03:15:22,905 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:15:22,907 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-29 03:15:22,907 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:22,918 INFO L225 Difference]: With dead ends: 57 [2020-10-29 03:15:22,918 INFO L226 Difference]: Without dead ends: 29 [2020-10-29 03:15:22,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:15:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-29 03:15:22,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 22. [2020-10-29 03:15:22,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-29 03:15:22,986 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2020-10-29 03:15:22,989 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 14 [2020-10-29 03:15:22,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:22,990 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2020-10-29 03:15:22,990 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:15:22,990 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2020-10-29 03:15:22,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 03:15:22,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:22,992 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:22,992 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 03:15:22,993 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:22,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:22,994 INFO L82 PathProgramCache]: Analyzing trace with hash -2112687446, now seen corresponding path program 1 times [2020-10-29 03:15:22,994 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:22,995 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [919388104] [2020-10-29 03:15:22,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:23,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:23,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:23,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 03:15:23,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:23,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-29 03:15:23,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:23,138 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-29 03:15:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:23,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-29 03:15:23,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:23,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:23,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:23,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:23,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:23,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:23,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:15:23,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:23,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:23,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:23,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:23,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:23,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:23,230 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 03:15:23,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [919388104] [2020-10-29 03:15:23,237 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 03:15:23,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-29 03:15:23,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1384280541] [2020-10-29 03:15:23,240 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 03:15:23,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:23,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 03:15:23,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:15:23,252 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand 5 states. [2020-10-29 03:15:23,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:23,389 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-10-29 03:15:23,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 03:15:23,390 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 15 [2020-10-29 03:15:23,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:23,391 INFO L225 Difference]: With dead ends: 37 [2020-10-29 03:15:23,391 INFO L226 Difference]: Without dead ends: 24 [2020-10-29 03:15:23,393 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 03:15:23,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-29 03:15:23,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 23. [2020-10-29 03:15:23,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-29 03:15:23,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 25 transitions. [2020-10-29 03:15:23,409 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 25 transitions. Word has length 15 [2020-10-29 03:15:23,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:23,410 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 25 transitions. [2020-10-29 03:15:23,410 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 03:15:23,411 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 25 transitions. [2020-10-29 03:15:23,412 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-29 03:15:23,412 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:23,412 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:23,412 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 03:15:23,413 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:23,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:23,414 INFO L82 PathProgramCache]: Analyzing trace with hash 996586641, now seen corresponding path program 1 times [2020-10-29 03:15:23,414 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:23,414 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614169750] [2020-10-29 03:15:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:23,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:23,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:23,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-29 03:15:23,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:23,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-29 03:15:23,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:23,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:15:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:23,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-29 03:15:23,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:23,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:23,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:23,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:23,925 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:23,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:23,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 03:15:23,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:23,926 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:23,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:23,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:23,933 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:23,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614169750] [2020-10-29 03:15:23,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:23,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 03:15:23,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95343484] [2020-10-29 03:15:23,937 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:15:23,937 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:23,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:15:23,941 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:15:23,942 INFO L87 Difference]: Start difference. First operand 23 states and 25 transitions. Second operand 6 states. [2020-10-29 03:15:24,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:24,114 INFO L93 Difference]: Finished difference Result 44 states and 49 transitions. [2020-10-29 03:15:24,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 03:15:24,115 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2020-10-29 03:15:24,116 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:24,117 INFO L225 Difference]: With dead ends: 44 [2020-10-29 03:15:24,117 INFO L226 Difference]: Without dead ends: 32 [2020-10-29 03:15:24,118 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:15:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-29 03:15:24,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 25. [2020-10-29 03:15:24,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-29 03:15:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2020-10-29 03:15:24,126 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 17 [2020-10-29 03:15:24,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:24,126 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2020-10-29 03:15:24,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:15:24,126 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2020-10-29 03:15:24,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-29 03:15:24,127 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:24,127 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:24,127 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 03:15:24,128 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:24,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:24,128 INFO L82 PathProgramCache]: Analyzing trace with hash 1207497669, now seen corresponding path program 1 times [2020-10-29 03:15:24,128 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:24,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1802798557] [2020-10-29 03:15:24,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:24,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:24,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:24,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-29 03:15:24,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:24,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-29 03:15:24,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:24,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 03:15:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:24,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 03:15:24,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:24,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:24,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:24,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:24,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:24,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:24,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:24,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:24,311 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:24,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:24,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:24,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:24,316 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1802798557] [2020-10-29 03:15:24,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:24,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:15:24,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344567029] [2020-10-29 03:15:24,317 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 03:15:24,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:24,318 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 03:15:24,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:15:24,318 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand 6 states. [2020-10-29 03:15:24,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:24,399 INFO L93 Difference]: Finished difference Result 40 states and 43 transitions. [2020-10-29 03:15:24,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 03:15:24,400 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 18 [2020-10-29 03:15:24,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:24,401 INFO L225 Difference]: With dead ends: 40 [2020-10-29 03:15:24,401 INFO L226 Difference]: Without dead ends: 27 [2020-10-29 03:15:24,402 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 03:15:24,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-10-29 03:15:24,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 26. [2020-10-29 03:15:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-29 03:15:24,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-29 03:15:24,415 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 18 [2020-10-29 03:15:24,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:24,415 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-29 03:15:24,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 03:15:24,416 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-29 03:15:24,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-29 03:15:24,422 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:24,422 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:24,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 03:15:24,422 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:24,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:24,423 INFO L82 PathProgramCache]: Analyzing trace with hash 533781228, now seen corresponding path program 2 times [2020-10-29 03:15:24,424 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:24,424 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1534566481] [2020-10-29 03:15:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:24,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:24,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:25,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:25,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-29 03:15:25,265 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:25,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 816 [2020-10-29 03:15:25,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:25,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:25,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:15:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:25,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 03:15:25,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:25,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:25,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:25,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:25,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:25,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:25,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:25,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 03:15:25,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:25,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:25,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:25,358 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:25,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1534566481] [2020-10-29 03:15:25,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:25,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 03:15:25,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916566348] [2020-10-29 03:15:25,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 03:15:25,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:25,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 03:15:25,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 03:15:25,361 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 7 states. [2020-10-29 03:15:25,533 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:25,533 INFO L93 Difference]: Finished difference Result 47 states and 52 transitions. [2020-10-29 03:15:25,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:15:25,534 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-10-29 03:15:25,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:25,535 INFO L225 Difference]: With dead ends: 47 [2020-10-29 03:15:25,535 INFO L226 Difference]: Without dead ends: 35 [2020-10-29 03:15:25,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:15:25,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-29 03:15:25,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 28. [2020-10-29 03:15:25,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-29 03:15:25,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-29 03:15:25,543 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 20 [2020-10-29 03:15:25,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:25,544 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-29 03:15:25,544 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 03:15:25,544 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-29 03:15:25,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-29 03:15:25,545 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:25,545 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:25,545 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 03:15:25,545 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:25,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:25,546 INFO L82 PathProgramCache]: Analyzing trace with hash -254568246, now seen corresponding path program 2 times [2020-10-29 03:15:25,546 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:25,547 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729186800] [2020-10-29 03:15:25,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:25,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:25,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:25,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:25,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-29 03:15:25,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:25,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-29 03:15:25,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:25,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 03:15:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:25,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 03:15:25,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:25,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:25,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:25,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:25,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:25,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:25,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:25,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 03:15:25,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:25,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:25,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:25,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:25,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:25,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:25,925 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729186800] [2020-10-29 03:15:25,926 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:25,926 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:15:25,926 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633719014] [2020-10-29 03:15:25,927 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:15:25,927 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:25,927 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:15:25,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:15:25,928 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 10 states. [2020-10-29 03:15:26,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:26,188 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-10-29 03:15:26,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:15:26,189 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 21 [2020-10-29 03:15:26,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:26,190 INFO L225 Difference]: With dead ends: 45 [2020-10-29 03:15:26,190 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:15:26,191 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:15:26,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:15:26,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-10-29 03:15:26,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 03:15:26,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-29 03:15:26,199 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 21 [2020-10-29 03:15:26,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:26,200 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-29 03:15:26,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:15:26,200 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-29 03:15:26,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-29 03:15:26,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:26,201 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:26,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 03:15:26,201 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:26,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:26,202 INFO L82 PathProgramCache]: Analyzing trace with hash -57257295, now seen corresponding path program 3 times [2020-10-29 03:15:26,202 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:26,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431635918] [2020-10-29 03:15:26,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:26,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:26,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:26,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:26,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-29 03:15:26,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:26,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 776 [2020-10-29 03:15:26,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:26,994 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:15:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:26,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 03:15:26,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:27,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:27,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:27,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:27,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:27,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:27,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:27,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:15:27,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:27,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:27,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:27,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:27,100 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:27,101 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431635918] [2020-10-29 03:15:27,102 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:27,102 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 03:15:27,102 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879167989] [2020-10-29 03:15:27,103 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:15:27,103 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:27,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:15:27,104 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:15:27,105 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 8 states. [2020-10-29 03:15:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:27,306 INFO L93 Difference]: Finished difference Result 61 states and 68 transitions. [2020-10-29 03:15:27,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 03:15:27,307 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-10-29 03:15:27,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:27,310 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:15:27,310 INFO L226 Difference]: Without dead ends: 49 [2020-10-29 03:15:27,312 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:15:27,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-29 03:15:27,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2020-10-29 03:15:27,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 03:15:27,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-29 03:15:27,324 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 23 [2020-10-29 03:15:27,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:27,325 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-29 03:15:27,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:15:27,325 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-29 03:15:27,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-29 03:15:27,330 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:27,330 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:27,330 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 03:15:27,330 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:27,331 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:27,331 INFO L82 PathProgramCache]: Analyzing trace with hash -1396893275, now seen corresponding path program 3 times [2020-10-29 03:15:27,331 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:27,332 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [328957637] [2020-10-29 03:15:27,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:27,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:27,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:27,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:27,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-29 03:15:27,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:27,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 03:15:27,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:27,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:15:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:27,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 03:15:27,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:27,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:27,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:27,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:27,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:27,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:27,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:27,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:27,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:27,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:27,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:27,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:27,800 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:27,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [328957637] [2020-10-29 03:15:27,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:27,801 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 03:15:27,801 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1472817103] [2020-10-29 03:15:27,801 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 03:15:27,801 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:27,802 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 03:15:27,802 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 03:15:27,803 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 11 states. [2020-10-29 03:15:28,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:28,227 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2020-10-29 03:15:28,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:15:28,228 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 24 [2020-10-29 03:15:28,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:28,229 INFO L225 Difference]: With dead ends: 61 [2020-10-29 03:15:28,229 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 03:15:28,230 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:15:28,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 03:15:28,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 39. [2020-10-29 03:15:28,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-29 03:15:28,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-29 03:15:28,239 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 24 [2020-10-29 03:15:28,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:28,239 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-29 03:15:28,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 03:15:28,240 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-29 03:15:28,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-29 03:15:28,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:28,241 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:28,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 03:15:28,241 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:28,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:28,242 INFO L82 PathProgramCache]: Analyzing trace with hash 1680017612, now seen corresponding path program 4 times [2020-10-29 03:15:28,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:28,242 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [765862971] [2020-10-29 03:15:28,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:28,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:28,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:28,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:29,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:29,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:29,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-29 03:15:29,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:15:29,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1401 [2020-10-29 03:15:29,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:29,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:29,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 03:15:29,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:29,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-29 03:15:29,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:29,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:29,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:29,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:29,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:29,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:29,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:29,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 03:15:29,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:29,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:29,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:29,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:29,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:29,771 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:29,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [765862971] [2020-10-29 03:15:29,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:29,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:15:29,773 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745336264] [2020-10-29 03:15:29,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 03:15:29,777 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:29,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 03:15:29,780 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2020-10-29 03:15:29,780 INFO L87 Difference]: Start difference. First operand 39 states and 43 transitions. Second operand 9 states. [2020-10-29 03:15:30,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:30,062 INFO L93 Difference]: Finished difference Result 71 states and 81 transitions. [2020-10-29 03:15:30,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:15:30,062 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-29 03:15:30,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:30,063 INFO L225 Difference]: With dead ends: 71 [2020-10-29 03:15:30,063 INFO L226 Difference]: Without dead ends: 59 [2020-10-29 03:15:30,064 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:15:30,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-29 03:15:30,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 41. [2020-10-29 03:15:30,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-29 03:15:30,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 45 transitions. [2020-10-29 03:15:30,079 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 45 transitions. Word has length 26 [2020-10-29 03:15:30,079 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:30,080 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 45 transitions. [2020-10-29 03:15:30,080 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 03:15:30,080 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 45 transitions. [2020-10-29 03:15:30,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-29 03:15:30,084 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:30,084 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:30,085 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 03:15:30,085 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:30,088 INFO L82 PathProgramCache]: Analyzing trace with hash 919021290, now seen corresponding path program 4 times [2020-10-29 03:15:30,088 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:30,088 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987684548] [2020-10-29 03:15:30,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:30,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:30,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:30,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:30,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-29 03:15:30,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:30,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 684 [2020-10-29 03:15:30,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:30,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:15:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:30,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-29 03:15:30,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:31,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:31,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:31,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:31,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:31,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:31,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:31,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:31,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:31,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:31,105 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:31,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987684548] [2020-10-29 03:15:31,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:31,106 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:15:31,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1875795399] [2020-10-29 03:15:31,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:15:31,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:31,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:15:31,107 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:15:31,107 INFO L87 Difference]: Start difference. First operand 41 states and 45 transitions. Second operand 13 states. [2020-10-29 03:15:31,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:31,584 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2020-10-29 03:15:31,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-29 03:15:31,585 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 27 [2020-10-29 03:15:31,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:31,586 INFO L225 Difference]: With dead ends: 67 [2020-10-29 03:15:31,586 INFO L226 Difference]: Without dead ends: 64 [2020-10-29 03:15:31,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:15:31,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-29 03:15:31,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 42. [2020-10-29 03:15:31,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:15:31,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-10-29 03:15:31,614 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 27 [2020-10-29 03:15:31,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:31,614 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-10-29 03:15:31,615 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:15:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-10-29 03:15:31,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:15:31,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:31,616 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:31,616 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-29 03:15:31,617 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:31,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:31,617 INFO L82 PathProgramCache]: Analyzing trace with hash 452753840, now seen corresponding path program 1 times [2020-10-29 03:15:31,618 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:31,618 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [719247287] [2020-10-29 03:15:31,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:31,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:31,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:31,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-29 03:15:31,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:31,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 03:15:31,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:31,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:31,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 03:15:31,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:31,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 03:15:31,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:31,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:31,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:31,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:31,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:31,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:31,852 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:31,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 03:15:31,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:31,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:31,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:31,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:31,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:31,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:31,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:31,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:31,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:31,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:31,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:31,870 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:31,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [719247287] [2020-10-29 03:15:31,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:31,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 03:15:31,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1687303961] [2020-10-29 03:15:31,872 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 03:15:31,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:31,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 03:15:31,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 03:15:31,873 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 8 states. [2020-10-29 03:15:32,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:32,023 INFO L93 Difference]: Finished difference Result 59 states and 65 transitions. [2020-10-29 03:15:32,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 03:15:32,024 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 29 [2020-10-29 03:15:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:32,025 INFO L225 Difference]: With dead ends: 59 [2020-10-29 03:15:32,025 INFO L226 Difference]: Without dead ends: 42 [2020-10-29 03:15:32,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:15:32,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-29 03:15:32,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-29 03:15:32,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-29 03:15:32,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 46 transitions. [2020-10-29 03:15:32,034 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 46 transitions. Word has length 29 [2020-10-29 03:15:32,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:32,035 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 46 transitions. [2020-10-29 03:15:32,035 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 03:15:32,035 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 46 transitions. [2020-10-29 03:15:32,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 03:15:32,036 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:32,036 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:32,036 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-29 03:15:32,036 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:32,037 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:32,037 INFO L82 PathProgramCache]: Analyzing trace with hash -1814112047, now seen corresponding path program 5 times [2020-10-29 03:15:32,037 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:32,038 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1807496252] [2020-10-29 03:15:32,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:32,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:32,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:32,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:32,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:32,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:32,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:32,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:34,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:35,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-10-29 03:15:35,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:15:35,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3286 [2020-10-29 03:15:35,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:35,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:35,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:15:35,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 03:15:35,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 03:15:35,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:35,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:35,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:35,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:35,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:35,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:35,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 03:15:35,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:35,480 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:35,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 03:15:35,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:35,489 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1807496252] [2020-10-29 03:15:35,489 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:35,489 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-29 03:15:35,489 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [484804645] [2020-10-29 03:15:35,490 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:15:35,490 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:35,491 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:15:35,491 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:15:35,491 INFO L87 Difference]: Start difference. First operand 42 states and 46 transitions. Second operand 10 states. [2020-10-29 03:15:35,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:35,809 INFO L93 Difference]: Finished difference Result 74 states and 84 transitions. [2020-10-29 03:15:35,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 03:15:35,811 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-29 03:15:35,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:35,812 INFO L225 Difference]: With dead ends: 74 [2020-10-29 03:15:35,812 INFO L226 Difference]: Without dead ends: 62 [2020-10-29 03:15:35,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=182, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:15:35,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-29 03:15:35,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 44. [2020-10-29 03:15:35,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-29 03:15:35,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 48 transitions. [2020-10-29 03:15:35,832 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 48 transitions. Word has length 29 [2020-10-29 03:15:35,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:35,834 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 48 transitions. [2020-10-29 03:15:35,834 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:15:35,834 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 48 transitions. [2020-10-29 03:15:35,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-10-29 03:15:35,835 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:35,836 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:35,836 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-29 03:15:35,840 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:35,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:35,841 INFO L82 PathProgramCache]: Analyzing trace with hash -24815739, now seen corresponding path program 5 times [2020-10-29 03:15:35,841 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:35,842 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1595774926] [2020-10-29 03:15:35,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:35,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:36,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:36,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:36,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:36,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-29 03:15:36,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:36,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 988 [2020-10-29 03:15:36,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:36,862 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:15:36,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:36,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 03:15:36,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:37,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:37,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:37,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:37,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:37,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:37,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:37,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:37,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:37,199 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:37,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:37,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:37,208 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 0 proven. 40 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:37,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1595774926] [2020-10-29 03:15:37,209 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:37,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-29 03:15:37,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876527030] [2020-10-29 03:15:37,211 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-29 03:15:37,211 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:37,212 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-29 03:15:37,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-10-29 03:15:37,213 INFO L87 Difference]: Start difference. First operand 44 states and 48 transitions. Second operand 15 states. [2020-10-29 03:15:38,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:38,095 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-29 03:15:38,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:15:38,096 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 30 [2020-10-29 03:15:38,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:38,097 INFO L225 Difference]: With dead ends: 64 [2020-10-29 03:15:38,098 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 03:15:38,099 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=406, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:15:38,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 03:15:38,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 43. [2020-10-29 03:15:38,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-10-29 03:15:38,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 47 transitions. [2020-10-29 03:15:38,108 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 47 transitions. Word has length 30 [2020-10-29 03:15:38,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:38,108 INFO L481 AbstractCegarLoop]: Abstraction has 43 states and 47 transitions. [2020-10-29 03:15:38,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-29 03:15:38,108 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 47 transitions. [2020-10-29 03:15:38,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-29 03:15:38,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:38,109 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:38,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-29 03:15:38,109 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:38,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:38,110 INFO L82 PathProgramCache]: Analyzing trace with hash -336531573, now seen corresponding path program 2 times [2020-10-29 03:15:38,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:38,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1901628821] [2020-10-29 03:15:38,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:38,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:38,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:38,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:38,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-29 03:15:38,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:15:38,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-29 03:15:38,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:38,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:38,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:15:38,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:38,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-29 03:15:38,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:38,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:38,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:38,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:38,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:38,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:38,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:38,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 03:15:38,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:38,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:38,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:38,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:38,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:15:39,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:39,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:39,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:39,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:39,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:39,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:39,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:39,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:39,013 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 17 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:39,014 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1901628821] [2020-10-29 03:15:39,014 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:39,014 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-29 03:15:39,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63580809] [2020-10-29 03:15:39,015 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-29 03:15:39,015 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:39,016 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-29 03:15:39,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:15:39,016 INFO L87 Difference]: Start difference. First operand 43 states and 47 transitions. Second operand 13 states. [2020-10-29 03:15:39,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:39,492 INFO L93 Difference]: Finished difference Result 63 states and 69 transitions. [2020-10-29 03:15:39,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 03:15:39,493 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 32 [2020-10-29 03:15:39,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:39,495 INFO L225 Difference]: With dead ends: 63 [2020-10-29 03:15:39,495 INFO L226 Difference]: Without dead ends: 60 [2020-10-29 03:15:39,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:15:39,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-29 03:15:39,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-29 03:15:39,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:15:39,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-29 03:15:39,518 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 32 [2020-10-29 03:15:39,518 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:39,519 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-29 03:15:39,519 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-29 03:15:39,519 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-29 03:15:39,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-10-29 03:15:39,520 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:39,521 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:39,521 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-29 03:15:39,521 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:39,521 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:39,522 INFO L82 PathProgramCache]: Analyzing trace with hash 1007675344, now seen corresponding path program 3 times [2020-10-29 03:15:39,522 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:39,522 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519118584] [2020-10-29 03:15:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:39,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:39,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:39,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:40,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:40,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-29 03:15:40,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:40,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-29 03:15:40,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:40,291 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 03:15:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:40,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-29 03:15:40,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:40,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:40,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:40,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:40,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:40,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:40,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:40,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:40,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:40,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:40,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:40,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:40,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:15:40,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:40,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:40,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:40,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:40,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:40,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:40,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:40,588 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:40,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:40,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:40,595 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:40,595 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519118584] [2020-10-29 03:15:40,596 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:40,596 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:15:40,596 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439494706] [2020-10-29 03:15:40,597 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:15:40,597 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:40,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:15:40,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:15:40,598 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 14 states. [2020-10-29 03:15:41,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:41,202 INFO L93 Difference]: Finished difference Result 80 states and 88 transitions. [2020-10-29 03:15:41,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:15:41,203 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 35 [2020-10-29 03:15:41,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:41,204 INFO L225 Difference]: With dead ends: 80 [2020-10-29 03:15:41,204 INFO L226 Difference]: Without dead ends: 77 [2020-10-29 03:15:41,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=77, Invalid=429, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:15:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-29 03:15:41,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 54. [2020-10-29 03:15:41,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-29 03:15:41,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 59 transitions. [2020-10-29 03:15:41,222 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 59 transitions. Word has length 35 [2020-10-29 03:15:41,222 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:41,223 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 59 transitions. [2020-10-29 03:15:41,223 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:15:41,223 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 59 transitions. [2020-10-29 03:15:41,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-29 03:15:41,224 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:41,225 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:41,225 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-29 03:15:41,225 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:41,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:41,226 INFO L82 PathProgramCache]: Analyzing trace with hash 871787, now seen corresponding path program 4 times [2020-10-29 03:15:41,226 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:41,226 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861545622] [2020-10-29 03:15:41,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:41,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:41,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:41,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:41,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:41,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:41,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:42,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:42,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-29 03:15:42,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 03:15:42,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1606 [2020-10-29 03:15:42,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:42,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:15:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:42,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-29 03:15:42,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:43,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:43,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:43,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:43,253 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:15:43,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:43,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:43,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:15:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:43,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:43,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:43,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:43,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:43,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:43,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:43,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:43,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:43,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:43,275 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 2 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:43,275 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861545622] [2020-10-29 03:15:43,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:43,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-29 03:15:43,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [755723732] [2020-10-29 03:15:43,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-29 03:15:43,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:43,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-29 03:15:43,283 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-29 03:15:43,283 INFO L87 Difference]: Start difference. First operand 54 states and 59 transitions. Second operand 17 states. [2020-10-29 03:15:44,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:44,248 INFO L93 Difference]: Finished difference Result 94 states and 106 transitions. [2020-10-29 03:15:44,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:15:44,249 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 38 [2020-10-29 03:15:44,249 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:44,250 INFO L225 Difference]: With dead ends: 94 [2020-10-29 03:15:44,250 INFO L226 Difference]: Without dead ends: 91 [2020-10-29 03:15:44,251 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=114, Invalid=756, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:15:44,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-10-29 03:15:44,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 55. [2020-10-29 03:15:44,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:15:44,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 61 transitions. [2020-10-29 03:15:44,264 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 61 transitions. Word has length 38 [2020-10-29 03:15:44,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:44,265 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 61 transitions. [2020-10-29 03:15:44,265 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-29 03:15:44,265 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 61 transitions. [2020-10-29 03:15:44,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:15:44,266 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:44,266 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:44,266 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-29 03:15:44,266 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:44,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:44,267 INFO L82 PathProgramCache]: Analyzing trace with hash 1845198705, now seen corresponding path program 5 times [2020-10-29 03:15:44,267 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:44,267 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1358398128] [2020-10-29 03:15:44,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:44,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-29 03:15:44,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:44,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-29 03:15:44,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 03:15:44,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:44,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-29 03:15:44,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:44,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:44,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:44,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:44,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:44,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,554 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:44,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:44,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:44,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2020-10-29 03:15:44,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:44,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:44,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:44,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:44,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:44,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:15:44,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:15:44,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:44,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:44,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:44,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:44,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:44,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:44,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:44,579 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 15 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:15:44,579 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1358398128] [2020-10-29 03:15:44,580 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:44,580 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-29 03:15:44,580 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763256790] [2020-10-29 03:15:44,580 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-29 03:15:44,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:44,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-29 03:15:44,581 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 03:15:44,582 INFO L87 Difference]: Start difference. First operand 55 states and 61 transitions. Second operand 10 states. [2020-10-29 03:15:44,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:44,774 INFO L93 Difference]: Finished difference Result 76 states and 84 transitions. [2020-10-29 03:15:44,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 03:15:44,774 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 40 [2020-10-29 03:15:44,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:44,775 INFO L225 Difference]: With dead ends: 76 [2020-10-29 03:15:44,776 INFO L226 Difference]: Without dead ends: 55 [2020-10-29 03:15:44,776 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-10-29 03:15:44,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-29 03:15:44,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 55. [2020-10-29 03:15:44,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-29 03:15:44,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 60 transitions. [2020-10-29 03:15:44,788 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 60 transitions. Word has length 40 [2020-10-29 03:15:44,788 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:44,788 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 60 transitions. [2020-10-29 03:15:44,788 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-29 03:15:44,788 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 60 transitions. [2020-10-29 03:15:44,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 03:15:44,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:44,789 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:44,789 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-29 03:15:44,789 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:44,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:44,790 INFO L82 PathProgramCache]: Analyzing trace with hash 1726033298, now seen corresponding path program 1 times [2020-10-29 03:15:44,790 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:44,790 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871917770] [2020-10-29 03:15:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:44,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:44,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:46,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:47,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:47,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:49,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 03:15:49,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:15:49,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4551 [2020-10-29 03:15:49,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:49,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-29 03:15:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-29 03:15:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:49,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:49,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:49,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:49,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:49,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:49,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:15:49,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:49,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:49,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:49,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:49,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:15:49,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:49,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:49,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:49,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:49,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:49,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:49,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:49,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:49,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:49,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:49,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:49,860 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 2 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:49,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871917770] [2020-10-29 03:15:49,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:49,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:15:49,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219814663] [2020-10-29 03:15:49,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:15:49,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:49,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:15:49,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:15:49,870 INFO L87 Difference]: Start difference. First operand 55 states and 60 transitions. Second operand 18 states. [2020-10-29 03:15:50,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:50,781 INFO L93 Difference]: Finished difference Result 97 states and 110 transitions. [2020-10-29 03:15:50,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:15:50,782 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-10-29 03:15:50,782 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:50,783 INFO L225 Difference]: With dead ends: 97 [2020-10-29 03:15:50,783 INFO L226 Difference]: Without dead ends: 94 [2020-10-29 03:15:50,785 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=140, Invalid=852, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:15:50,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-29 03:15:50,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 58. [2020-10-29 03:15:50,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-29 03:15:50,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 65 transitions. [2020-10-29 03:15:50,798 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 65 transitions. Word has length 40 [2020-10-29 03:15:50,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:50,798 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 65 transitions. [2020-10-29 03:15:50,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:15:50,798 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 65 transitions. [2020-10-29 03:15:50,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:15:50,799 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:50,799 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:50,799 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-29 03:15:50,799 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:50,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:50,800 INFO L82 PathProgramCache]: Analyzing trace with hash 34890422, now seen corresponding path program 6 times [2020-10-29 03:15:50,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:50,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376425759] [2020-10-29 03:15:50,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:50,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:50,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:51,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:52,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:52,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-29 03:15:52,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 03:15:52,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1339 [2020-10-29 03:15:52,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:52,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-29 03:15:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:52,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-29 03:15:52,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:52,446 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:52,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:52,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:52,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:52,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:52,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:52,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:52,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:52,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:52,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:52,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:15:52,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:52,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:52,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:52,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:52,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:52,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:52,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:52,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:52,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:52,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:52,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:52,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:15:52,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:52,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:52,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:52,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:52,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:52,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:15:52,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:52,472 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:52,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:52,484 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 4 proven. 34 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:15:52,485 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376425759] [2020-10-29 03:15:52,485 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:52,485 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:15:52,485 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317567597] [2020-10-29 03:15:52,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:15:52,486 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:52,486 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:15:52,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:15:52,487 INFO L87 Difference]: Start difference. First operand 58 states and 65 transitions. Second operand 16 states. [2020-10-29 03:15:53,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:53,080 INFO L93 Difference]: Finished difference Result 82 states and 92 transitions. [2020-10-29 03:15:53,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:15:53,081 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 43 [2020-10-29 03:15:53,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:53,082 INFO L225 Difference]: With dead ends: 82 [2020-10-29 03:15:53,082 INFO L226 Difference]: Without dead ends: 79 [2020-10-29 03:15:53,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=65, Invalid=441, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:15:53,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-29 03:15:53,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-10-29 03:15:53,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:15:53,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2020-10-29 03:15:53,106 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 43 [2020-10-29 03:15:53,107 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:15:53,107 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2020-10-29 03:15:53,107 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:15:53,107 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2020-10-29 03:15:53,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-29 03:15:53,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:15:53,110 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:15:53,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-29 03:15:53,110 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:15:53,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:15:53,111 INFO L82 PathProgramCache]: Analyzing trace with hash -84274985, now seen corresponding path program 2 times [2020-10-29 03:15:53,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:15:53,111 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [496317006] [2020-10-29 03:15:53,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:15:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:53,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:53,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:53,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:53,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:54,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:55,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:56,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:56,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:56,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:57,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:58,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:58,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 03:15:58,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 03:15:58,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-29 03:15:58,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:58,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:15:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:15:58,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 03:15:58,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:58,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:15:58,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:58,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:58,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:15:58,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:58,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:58,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:58,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:15:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:58,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:15:58,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:58,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:15:58,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:15:58,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:15:58,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:15:58,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:15:58,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:15:58,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:15:58,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:15:58,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:15:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:15:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:15:58,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:15:58,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:15:58,710 INFO L134 CoverageAnalysis]: Checked inductivity of 74 backedges. 5 proven. 69 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 03:15:58,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [496317006] [2020-10-29 03:15:58,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:15:58,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-29 03:15:58,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1488309099] [2020-10-29 03:15:58,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-29 03:15:58,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:15:58,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-29 03:15:58,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2020-10-29 03:15:58,713 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 21 states. [2020-10-29 03:15:59,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:15:59,996 INFO L93 Difference]: Finished difference Result 103 states and 116 transitions. [2020-10-29 03:15:59,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-29 03:15:59,997 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 43 [2020-10-29 03:15:59,997 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:15:59,998 INFO L225 Difference]: With dead ends: 103 [2020-10-29 03:15:59,998 INFO L226 Difference]: Without dead ends: 100 [2020-10-29 03:15:59,999 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=187, Invalid=935, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 03:16:00,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-10-29 03:16:00,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 73. [2020-10-29 03:16:00,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:16:00,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2020-10-29 03:16:00,017 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 43 [2020-10-29 03:16:00,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:00,018 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2020-10-29 03:16:00,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-29 03:16:00,018 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2020-10-29 03:16:00,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-10-29 03:16:00,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:00,019 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:00,019 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-29 03:16:00,019 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:00,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:00,020 INFO L82 PathProgramCache]: Analyzing trace with hash 1045167441, now seen corresponding path program 7 times [2020-10-29 03:16:00,020 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:00,020 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [809042346] [2020-10-29 03:16:00,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:00,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:00,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:00,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:02,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:02,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-29 03:16:02,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:16:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2666 [2020-10-29 03:16:02,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:02,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:16:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-29 03:16:02,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:03,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:03,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:03,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:03,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:03,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:03,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:03,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:03,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:03,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:03,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:03,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:16:03,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:03,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:03,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:03,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:03,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:03,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:03,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:03,122 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:03,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:03,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:03,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 03:16:03,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:16:03,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:03,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:03,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:03,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:03,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:03,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:03,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:03,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:03,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:03,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:03,147 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 48 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:16:03,148 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [809042346] [2020-10-29 03:16:03,149 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:03,149 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:16:03,149 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129791286] [2020-10-29 03:16:03,150 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:16:03,150 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:03,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:16:03,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:16:03,151 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 18 states. [2020-10-29 03:16:04,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:04,033 INFO L93 Difference]: Finished difference Result 111 states and 124 transitions. [2020-10-29 03:16:04,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-29 03:16:04,034 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 46 [2020-10-29 03:16:04,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:04,036 INFO L225 Difference]: With dead ends: 111 [2020-10-29 03:16:04,036 INFO L226 Difference]: Without dead ends: 108 [2020-10-29 03:16:04,038 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=102, Invalid=768, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:16:04,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-10-29 03:16:04,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 73. [2020-10-29 03:16:04,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-10-29 03:16:04,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 82 transitions. [2020-10-29 03:16:04,053 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 82 transitions. Word has length 46 [2020-10-29 03:16:04,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:04,053 INFO L481 AbstractCegarLoop]: Abstraction has 73 states and 82 transitions. [2020-10-29 03:16:04,054 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:16:04,054 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 82 transitions. [2020-10-29 03:16:04,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-29 03:16:04,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:04,055 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:04,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-29 03:16:04,055 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:04,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:04,055 INFO L82 PathProgramCache]: Analyzing trace with hash -1716730248, now seen corresponding path program 3 times [2020-10-29 03:16:04,056 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:04,056 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [175885032] [2020-10-29 03:16:04,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:04,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:04,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:04,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:04,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:04,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:04,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:05,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:06,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-29 03:16:09,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-29 03:16:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-29 03:16:09,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:16:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:09,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:16:09,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:09,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:09,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:09,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:09,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:16:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:09,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:09,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:09,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:09,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:09,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:09,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:16:09,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:09,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:09,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:09,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:09,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:09,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:09,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:09,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:09,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:09,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:09,634 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 4 proven. 59 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:16:09,635 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [175885032] [2020-10-29 03:16:09,635 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:09,635 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:16:09,635 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884773030] [2020-10-29 03:16:09,636 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:16:09,636 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:09,636 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:16:09,636 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:16:09,637 INFO L87 Difference]: Start difference. First operand 73 states and 82 transitions. Second operand 20 states. [2020-10-29 03:16:10,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:10,953 INFO L93 Difference]: Finished difference Result 121 states and 136 transitions. [2020-10-29 03:16:10,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:16:10,957 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 48 [2020-10-29 03:16:10,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:10,958 INFO L225 Difference]: With dead ends: 121 [2020-10-29 03:16:10,958 INFO L226 Difference]: Without dead ends: 118 [2020-10-29 03:16:10,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=1240, Unknown=0, NotChecked=0, Total=1406 [2020-10-29 03:16:10,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-29 03:16:10,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 66. [2020-10-29 03:16:10,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:16:10,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 73 transitions. [2020-10-29 03:16:10,973 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 73 transitions. Word has length 48 [2020-10-29 03:16:10,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:10,973 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 73 transitions. [2020-10-29 03:16:10,974 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:16:10,974 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 73 transitions. [2020-10-29 03:16:10,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 03:16:10,974 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:10,974 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:10,975 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-29 03:16:10,975 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:10,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:10,975 INFO L82 PathProgramCache]: Analyzing trace with hash 1450874780, now seen corresponding path program 8 times [2020-10-29 03:16:10,975 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:10,976 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [90372947] [2020-10-29 03:16:10,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:10,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:10,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-29 03:16:11,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 03:16:11,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 03:16:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:11,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-29 03:16:11,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:11,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:11,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:11,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:11,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:11,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:11,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:11,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:11,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 03:16:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:11,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:11,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:11,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:11,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:11,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:11,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:11,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:11,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:11,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:11,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:11,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:16:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:11,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:11,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:11,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:11,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:11,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:11,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:11,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:11,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 24 proven. 26 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:16:11,292 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [90372947] [2020-10-29 03:16:11,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:11,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-29 03:16:11,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287627667] [2020-10-29 03:16:11,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 03:16:11,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:11,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 03:16:11,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-29 03:16:11,294 INFO L87 Difference]: Start difference. First operand 66 states and 73 transitions. Second operand 12 states. [2020-10-29 03:16:11,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:11,564 INFO L93 Difference]: Finished difference Result 91 states and 101 transitions. [2020-10-29 03:16:11,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-29 03:16:11,565 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-10-29 03:16:11,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:11,566 INFO L225 Difference]: With dead ends: 91 [2020-10-29 03:16:11,566 INFO L226 Difference]: Without dead ends: 66 [2020-10-29 03:16:11,567 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:16:11,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-29 03:16:11,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-10-29 03:16:11,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-29 03:16:11,579 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 72 transitions. [2020-10-29 03:16:11,580 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 72 transitions. Word has length 51 [2020-10-29 03:16:11,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:11,580 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 72 transitions. [2020-10-29 03:16:11,580 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 03:16:11,580 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 72 transitions. [2020-10-29 03:16:11,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-29 03:16:11,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:11,581 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:11,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-29 03:16:11,581 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:11,583 INFO L82 PathProgramCache]: Analyzing trace with hash 983864509, now seen corresponding path program 4 times [2020-10-29 03:16:11,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:11,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1010513078] [2020-10-29 03:16:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:11,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:11,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:11,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:12,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:13,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:13,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:13,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:14,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:14,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:14,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:14,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:15,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:16,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:16,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-29 03:16:16,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 03:16:16,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:16:16,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:16,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 03:16:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:16,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-29 03:16:16,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:17,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:17,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,287 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:17,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:17,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:17,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:17,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:17,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:16:17,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:17,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:17,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:17,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:17,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:17,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:17,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:17,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:17,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:17,308 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 78 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:16:17,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1010513078] [2020-10-29 03:16:17,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:17,309 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:16:17,309 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767166709] [2020-10-29 03:16:17,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:16:17,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:17,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:16:17,310 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:16:17,310 INFO L87 Difference]: Start difference. First operand 66 states and 72 transitions. Second operand 22 states. [2020-10-29 03:16:18,789 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:18,789 INFO L93 Difference]: Finished difference Result 124 states and 140 transitions. [2020-10-29 03:16:18,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:16:18,790 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-29 03:16:18,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:18,792 INFO L225 Difference]: With dead ends: 124 [2020-10-29 03:16:18,792 INFO L226 Difference]: Without dead ends: 121 [2020-10-29 03:16:18,794 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 294 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=198, Invalid=1442, Unknown=0, NotChecked=0, Total=1640 [2020-10-29 03:16:18,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-29 03:16:18,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 84. [2020-10-29 03:16:18,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-10-29 03:16:18,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2020-10-29 03:16:18,811 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 51 [2020-10-29 03:16:18,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:18,811 INFO L481 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2020-10-29 03:16:18,811 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:16:18,811 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2020-10-29 03:16:18,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:16:18,812 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:18,812 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:18,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-29 03:16:18,813 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:18,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:18,813 INFO L82 PathProgramCache]: Analyzing trace with hash 1541891895, now seen corresponding path program 9 times [2020-10-29 03:16:18,813 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:18,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1982138743] [2020-10-29 03:16:18,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:18,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:18,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:18,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:18,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:19,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:23,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:23,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 03:16:23,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 03:16:23,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:16:23,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:23,831 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:23,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-29 03:16:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:23,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-29 03:16:23,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:24,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:24,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:24,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:24,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:24,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:24,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:16:24,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:24,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:24,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,285 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:24,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:24,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:24,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:16:24,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:24,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:24,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,297 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:24,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:24,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 03:16:24,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:16:24,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:24,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:24,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:24,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:24,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:24,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:24,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:24,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:24,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:24,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:24,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 6 proven. 58 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:16:24,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1982138743] [2020-10-29 03:16:24,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:24,346 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-29 03:16:24,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133260494] [2020-10-29 03:16:24,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-29 03:16:24,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:24,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-29 03:16:24,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=304, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:16:24,350 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand 19 states. [2020-10-29 03:16:25,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:25,153 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2020-10-29 03:16:25,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-29 03:16:25,155 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-10-29 03:16:25,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:25,156 INFO L225 Difference]: With dead ends: 112 [2020-10-29 03:16:25,156 INFO L226 Difference]: Without dead ends: 109 [2020-10-29 03:16:25,156 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=79, Invalid=677, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:16:25,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-10-29 03:16:25,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 103. [2020-10-29 03:16:25,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-10-29 03:16:25,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 116 transitions. [2020-10-29 03:16:25,177 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 116 transitions. Word has length 54 [2020-10-29 03:16:25,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:25,178 INFO L481 AbstractCegarLoop]: Abstraction has 103 states and 116 transitions. [2020-10-29 03:16:25,178 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-29 03:16:25,178 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 116 transitions. [2020-10-29 03:16:25,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-29 03:16:25,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:25,179 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:25,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-29 03:16:25,179 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:25,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:25,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1074881624, now seen corresponding path program 5 times [2020-10-29 03:16:25,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:25,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614108618] [2020-10-29 03:16:25,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:25,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:25,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:25,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:26,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:26,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:26,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:26,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:27,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:28,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:28,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:29,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:29,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:30,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:30,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-29 03:16:30,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-29 03:16:30,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:16:30,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:30,198 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:30,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:16:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:30,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-29 03:16:30,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 03:16:31,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:31,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:31,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:31,321 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:31,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:31,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:31,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:31,322 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:31,323 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:31,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:31,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:31,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:16:31,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:31,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:31,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:31,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:31,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:31,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:31,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:31,332 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:31,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:31,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:31,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:16:31,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:31,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:31,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:31,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:31,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:31,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:31,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:31,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:31,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:31,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:31,357 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 4 proven. 100 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:16:31,358 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614108618] [2020-10-29 03:16:31,358 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:31,358 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:16:31,358 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063442475] [2020-10-29 03:16:31,359 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:16:31,359 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:31,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:16:31,360 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=451, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:16:31,360 INFO L87 Difference]: Start difference. First operand 103 states and 116 transitions. Second operand 23 states. [2020-10-29 03:16:34,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:34,175 INFO L93 Difference]: Finished difference Result 150 states and 172 transitions. [2020-10-29 03:16:34,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:16:34,176 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 54 [2020-10-29 03:16:34,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:34,178 INFO L225 Difference]: With dead ends: 150 [2020-10-29 03:16:34,178 INFO L226 Difference]: Without dead ends: 147 [2020-10-29 03:16:34,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 411 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=275, Invalid=2077, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:16:34,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-29 03:16:34,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 113. [2020-10-29 03:16:34,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-10-29 03:16:34,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 130 transitions. [2020-10-29 03:16:34,203 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 130 transitions. Word has length 54 [2020-10-29 03:16:34,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:34,203 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 130 transitions. [2020-10-29 03:16:34,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:16:34,204 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 130 transitions. [2020-10-29 03:16:34,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-29 03:16:34,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:34,205 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:34,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-29 03:16:34,205 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:34,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:34,205 INFO L82 PathProgramCache]: Analyzing trace with hash -1461970594, now seen corresponding path program 6 times [2020-10-29 03:16:34,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:34,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [218839669] [2020-10-29 03:16:34,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:34,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:34,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:34,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:34,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:34,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:35,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:35,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:36,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:39,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:39,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 03:16:39,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:16:39,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:16:39,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:39,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-29 03:16:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:39,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-29 03:16:39,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:39,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:39,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:39,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:39,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:39,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:39,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:39,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:39,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:39,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:39,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:39,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:16:39,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:39,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:39,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:39,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:39,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:39,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:39,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:39,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:39,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:39,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:39,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:39,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:39,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:16:39,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:39,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:39,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:39,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:39,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:39,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:39,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:39,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:39,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:39,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:16:39,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:39,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:39,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:39,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:39,772 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:39,772 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:39,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:39,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:39,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:39,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:39,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:39,789 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 6 proven. 69 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:16:39,790 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [218839669] [2020-10-29 03:16:39,790 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:39,790 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 03:16:39,790 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828321702] [2020-10-29 03:16:39,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 03:16:39,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:39,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 03:16:39,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=339, Unknown=0, NotChecked=0, Total=380 [2020-10-29 03:16:39,792 INFO L87 Difference]: Start difference. First operand 113 states and 130 transitions. Second operand 20 states. [2020-10-29 03:16:40,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:40,915 INFO L93 Difference]: Finished difference Result 148 states and 168 transitions. [2020-10-29 03:16:40,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-29 03:16:40,916 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 56 [2020-10-29 03:16:40,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:40,918 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:16:40,918 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 03:16:40,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=111, Invalid=945, Unknown=0, NotChecked=0, Total=1056 [2020-10-29 03:16:40,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 03:16:40,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 106. [2020-10-29 03:16:40,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-10-29 03:16:40,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 121 transitions. [2020-10-29 03:16:40,941 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 121 transitions. Word has length 56 [2020-10-29 03:16:40,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:40,942 INFO L481 AbstractCegarLoop]: Abstraction has 106 states and 121 transitions. [2020-10-29 03:16:40,942 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 03:16:40,942 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 121 transitions. [2020-10-29 03:16:40,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-29 03:16:40,942 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:40,942 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:40,943 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-29 03:16:40,943 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:40,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:40,943 INFO L82 PathProgramCache]: Analyzing trace with hash -1853576483, now seen corresponding path program 7 times [2020-10-29 03:16:40,944 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:40,944 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1444825729] [2020-10-29 03:16:40,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:40,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:42,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:42,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:42,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:42,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:43,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:45,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:45,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:45,962 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 03:16:45,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-10-29 03:16:45,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:16:45,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:45,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:16:45,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:45,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-29 03:16:45,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:46,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:46,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:46,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:16:46,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:46,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:46,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:46,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:46,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:16:46,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:46,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:46,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,730 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:46,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:46,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:46,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:46,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:16:46,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:46,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:46,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:46,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:46,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:16:46,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:46,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:46,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:46,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:46,748 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 13 proven. 116 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 03:16:46,749 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1444825729] [2020-10-29 03:16:46,749 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:46,749 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:16:46,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [655503514] [2020-10-29 03:16:46,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:16:46,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:46,750 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:16:46,750 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=76, Invalid=574, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:16:46,751 INFO L87 Difference]: Start difference. First operand 106 states and 121 transitions. Second operand 26 states. [2020-10-29 03:16:48,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:48,956 INFO L93 Difference]: Finished difference Result 156 states and 178 transitions. [2020-10-29 03:16:48,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2020-10-29 03:16:48,957 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 57 [2020-10-29 03:16:48,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:48,958 INFO L225 Difference]: With dead ends: 156 [2020-10-29 03:16:48,958 INFO L226 Difference]: Without dead ends: 153 [2020-10-29 03:16:48,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 397 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=319, Invalid=1843, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:16:48,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-29 03:16:48,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 96. [2020-10-29 03:16:48,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-10-29 03:16:48,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 107 transitions. [2020-10-29 03:16:48,982 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 107 transitions. Word has length 57 [2020-10-29 03:16:48,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:48,983 INFO L481 AbstractCegarLoop]: Abstraction has 96 states and 107 transitions. [2020-10-29 03:16:48,983 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:16:48,983 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 107 transitions. [2020-10-29 03:16:48,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-10-29 03:16:48,983 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:48,984 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:48,984 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-29 03:16:48,984 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:48,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:48,985 INFO L82 PathProgramCache]: Analyzing trace with hash 1788334755, now seen corresponding path program 8 times [2020-10-29 03:16:48,985 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:48,986 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1814591227] [2020-10-29 03:16:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:49,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:49,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:50,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:51,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:52,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:53,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:54,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:54,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 03:16:54,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:16:54,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 03:16:54,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:54,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:54,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:16:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:54,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:16:54,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:54,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:54,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:54,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:54,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:54,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:54,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:54,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:16:54,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:54,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:54,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:54,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:54,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:16:54,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:54,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:54,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:54,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:54,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:54,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:54,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:54,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:54,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:54,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:16:54,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:54,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:54,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:54,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:54,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:54,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:54,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:54,697 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:54,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:54,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:54,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:16:54,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:54,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:54,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:54,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:54,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:54,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:54,702 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:54,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:54,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:54,711 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 6 proven. 88 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:16:54,711 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1814591227] [2020-10-29 03:16:54,711 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:54,711 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:16:54,711 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152083820] [2020-10-29 03:16:54,712 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:16:54,712 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:54,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:16:54,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:16:54,713 INFO L87 Difference]: Start difference. First operand 96 states and 107 transitions. Second operand 23 states. [2020-10-29 03:16:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:56,593 INFO L93 Difference]: Finished difference Result 148 states and 166 transitions. [2020-10-29 03:16:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:16:56,594 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 59 [2020-10-29 03:16:56,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:56,596 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:16:56,596 INFO L226 Difference]: Without dead ends: 145 [2020-10-29 03:16:56,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 342 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=190, Invalid=1616, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:16:56,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-29 03:16:56,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 92. [2020-10-29 03:16:56,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:16:56,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2020-10-29 03:16:56,620 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 59 [2020-10-29 03:16:56,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:56,620 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2020-10-29 03:16:56,621 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:16:56,621 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2020-10-29 03:16:56,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:16:56,622 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:56,622 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:56,622 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-29 03:16:56,622 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:56,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:56,623 INFO L82 PathProgramCache]: Analyzing trace with hash -175797475, now seen corresponding path program 10 times [2020-10-29 03:16:56,623 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:56,623 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1221626747] [2020-10-29 03:16:56,623 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:56,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:56,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:56,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:56,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 03:16:56,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:56,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-29 03:16:56,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:56,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:56,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 03:16:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:16:56,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-29 03:16:56,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:57,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:16:57,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:57,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:57,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:57,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:16:57,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:57,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:16:57,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:57,072 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:16:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:57,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:16:57,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:57,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-29 03:16:57,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:57,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:57,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:57,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:57,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:57,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:57,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:57,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:57,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:16:57,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:57,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:57,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:57,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:57,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:57,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:57,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:57,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:57,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:16:57,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:57,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:57,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:57,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:57,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:57,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:57,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:57,087 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:57,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:57,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:57,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:57,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:57,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:16:57,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:57,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:57,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:16:57,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:16:57,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:16:57,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:16:57,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:16:57,092 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:16:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:16:57,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:16:57,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:16:57,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:16:57,097 INFO L134 CoverageAnalysis]: Checked inductivity of 104 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:16:57,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1221626747] [2020-10-29 03:16:57,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:16:57,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-29 03:16:57,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056175579] [2020-10-29 03:16:57,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-29 03:16:57,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:16:57,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-29 03:16:57,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2020-10-29 03:16:57,099 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand 14 states. [2020-10-29 03:16:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:16:57,452 INFO L93 Difference]: Finished difference Result 121 states and 135 transitions. [2020-10-29 03:16:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 03:16:57,453 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 62 [2020-10-29 03:16:57,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:16:57,454 INFO L225 Difference]: With dead ends: 121 [2020-10-29 03:16:57,455 INFO L226 Difference]: Without dead ends: 92 [2020-10-29 03:16:57,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2020-10-29 03:16:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-10-29 03:16:57,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2020-10-29 03:16:57,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-29 03:16:57,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-10-29 03:16:57,475 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 62 [2020-10-29 03:16:57,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:16:57,477 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-10-29 03:16:57,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-29 03:16:57,477 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-10-29 03:16:57,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-29 03:16:57,478 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:16:57,478 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:16:57,478 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-29 03:16:57,479 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:16:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:16:57,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1597298494, now seen corresponding path program 9 times [2020-10-29 03:16:57,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:16:57,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [682766743] [2020-10-29 03:16:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:16:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:16:57,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:57,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:57,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:58,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:59,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:59,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:59,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:59,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:16:59,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:00,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:00,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:01,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:02,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:02,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:02,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:02,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 03:17:02,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-29 03:17:02,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-29 03:17:02,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:02,515 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:17:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:02,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-29 03:17:02,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:03,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:03,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:03,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:03,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:03,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:03,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:03,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:03,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:03,548 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:03,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:03,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:03,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:03,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:03,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:17:03,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:03,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:03,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:03,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:03,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:03,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:17:03,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:03,558 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:03,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:03,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:03,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:17:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:03,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:03,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:03,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:03,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:17:03,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:03,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:03,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:03,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:03,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:17:03,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:03,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:03,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:03,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:03,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:03,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:03,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:03,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:03,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:03,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:03,586 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 6 proven. 110 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:17:03,586 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [682766743] [2020-10-29 03:17:03,586 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:03,586 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:17:03,587 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566262754] [2020-10-29 03:17:03,587 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:17:03,587 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:03,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:17:03,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:17:03,588 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 24 states. [2020-10-29 03:17:05,874 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:05,874 INFO L93 Difference]: Finished difference Result 151 states and 170 transitions. [2020-10-29 03:17:05,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-29 03:17:05,875 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 62 [2020-10-29 03:17:05,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:05,878 INFO L225 Difference]: With dead ends: 151 [2020-10-29 03:17:05,878 INFO L226 Difference]: Without dead ends: 148 [2020-10-29 03:17:05,879 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=206, Invalid=1774, Unknown=0, NotChecked=0, Total=1980 [2020-10-29 03:17:05,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2020-10-29 03:17:05,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 114. [2020-10-29 03:17:05,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-10-29 03:17:05,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 128 transitions. [2020-10-29 03:17:05,905 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 128 transitions. Word has length 62 [2020-10-29 03:17:05,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:05,905 INFO L481 AbstractCegarLoop]: Abstraction has 114 states and 128 transitions. [2020-10-29 03:17:05,906 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:17:05,906 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 128 transitions. [2020-10-29 03:17:05,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-10-29 03:17:05,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:05,907 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:05,907 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-29 03:17:05,907 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:05,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:05,908 INFO L82 PathProgramCache]: Analyzing trace with hash 974464580, now seen corresponding path program 10 times [2020-10-29 03:17:05,908 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:05,908 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [460078588] [2020-10-29 03:17:05,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:05,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:06,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:06,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:06,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:06,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:06,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:10,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:10,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 03:17:10,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-29 03:17:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:17:10,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:10,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-29 03:17:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:10,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-29 03:17:10,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:11,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:11,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:11,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:11,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:11,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:11,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:11,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:11,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:11,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:11,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:11,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:11,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:11,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:11,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:17:11,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:11,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:11,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:11,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:11,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:11,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:11,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:11,407 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:11,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:11,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:11,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:17:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:11,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:11,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:11,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:11,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:11,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:11,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:11,412 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:11,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:11,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:11,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:17:11,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:11,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:11,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:11,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:11,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:11,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:11,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:11,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:11,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:11,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:17:11,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:11,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:11,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:11,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:11,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:11,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:11,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:11,428 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:17:11,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:11,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:17:11,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:11,506 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 16 proven. 84 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-29 03:17:11,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [460078588] [2020-10-29 03:17:11,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:11,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 03:17:11,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801557387] [2020-10-29 03:17:11,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 03:17:11,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:11,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 03:17:11,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:17:11,508 INFO L87 Difference]: Start difference. First operand 114 states and 128 transitions. Second operand 22 states. [2020-10-29 03:17:13,166 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:13,166 INFO L93 Difference]: Finished difference Result 137 states and 155 transitions. [2020-10-29 03:17:13,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-29 03:17:13,167 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 64 [2020-10-29 03:17:13,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:13,168 INFO L225 Difference]: With dead ends: 137 [2020-10-29 03:17:13,168 INFO L226 Difference]: Without dead ends: 134 [2020-10-29 03:17:13,169 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=137, Invalid=1345, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:17:13,170 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2020-10-29 03:17:13,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 128. [2020-10-29 03:17:13,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2020-10-29 03:17:13,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 145 transitions. [2020-10-29 03:17:13,196 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 145 transitions. Word has length 64 [2020-10-29 03:17:13,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:13,197 INFO L481 AbstractCegarLoop]: Abstraction has 128 states and 145 transitions. [2020-10-29 03:17:13,197 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 03:17:13,197 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 145 transitions. [2020-10-29 03:17:13,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-29 03:17:13,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:13,199 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:13,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-29 03:17:13,199 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:13,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:13,200 INFO L82 PathProgramCache]: Analyzing trace with hash 1267714243, now seen corresponding path program 11 times [2020-10-29 03:17:13,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:13,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972595918] [2020-10-29 03:17:13,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:13,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:13,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:13,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:15,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:15,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:16,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:16,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:17,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:18,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:18,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-29 03:17:18,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:17:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:17:18,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:18,217 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:17:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-29 03:17:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:19,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:19,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:19,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:19,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:19,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:17:19,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:19,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:19,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:19,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:19,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:17:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:19,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:19,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,170 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:19,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:17:19,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:19,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:19,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:19,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:19,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:19,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:19,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:19,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:19,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:19,190 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 6 proven. 135 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-29 03:17:19,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972595918] [2020-10-29 03:17:19,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:19,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:17:19,191 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776659916] [2020-10-29 03:17:19,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:17:19,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:19,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:17:19,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=633, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:17:19,192 INFO L87 Difference]: Start difference. First operand 128 states and 145 transitions. Second operand 27 states. [2020-10-29 03:17:21,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:21,429 INFO L93 Difference]: Finished difference Result 145 states and 163 transitions. [2020-10-29 03:17:21,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-10-29 03:17:21,431 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 65 [2020-10-29 03:17:21,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:21,432 INFO L225 Difference]: With dead ends: 145 [2020-10-29 03:17:21,433 INFO L226 Difference]: Without dead ends: 142 [2020-10-29 03:17:21,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=221, Invalid=1585, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:17:21,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2020-10-29 03:17:21,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 136. [2020-10-29 03:17:21,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-29 03:17:21,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 153 transitions. [2020-10-29 03:17:21,466 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 153 transitions. Word has length 65 [2020-10-29 03:17:21,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:21,466 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 153 transitions. [2020-10-29 03:17:21,466 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:17:21,466 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 153 transitions. [2020-10-29 03:17:21,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-10-29 03:17:21,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:21,468 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:21,468 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-29 03:17:21,468 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:21,469 INFO L82 PathProgramCache]: Analyzing trace with hash 2071579273, now seen corresponding path program 12 times [2020-10-29 03:17:21,469 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:21,469 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241518444] [2020-10-29 03:17:21,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:21,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:21,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:21,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:21,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:22,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:22,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:22,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:24,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:26,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:26,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-29 03:17:26,487 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:17:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 03:17:26,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:26,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 03:17:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:26,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 03:17:26,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:27,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:27,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:27,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:27,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:27,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:27,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:27,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:27,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:27,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:27,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:27,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:27,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:27,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:27,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:27,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:27,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:27,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:27,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:27,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:27,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:27,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:27,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:27,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:27,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:17:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:27,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:27,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:27,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:27,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:27,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:27,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:27,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:27,202 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:27,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:17:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:27,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:27,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:27,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:27,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:27,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:27,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:27,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:27,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:27,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:17:27,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:27,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:27,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:27,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:27,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:27,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:27,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:27,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:27,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:27,239 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 102 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:17:27,239 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241518444] [2020-10-29 03:17:27,241 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:27,241 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-29 03:17:27,241 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899531689] [2020-10-29 03:17:27,242 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-29 03:17:27,242 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:27,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-29 03:17:27,243 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=458, Unknown=0, NotChecked=0, Total=506 [2020-10-29 03:17:27,243 INFO L87 Difference]: Start difference. First operand 136 states and 153 transitions. Second operand 23 states. [2020-10-29 03:17:28,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:28,740 INFO L93 Difference]: Finished difference Result 163 states and 183 transitions. [2020-10-29 03:17:28,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-29 03:17:28,742 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 67 [2020-10-29 03:17:28,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:28,743 INFO L225 Difference]: With dead ends: 163 [2020-10-29 03:17:28,743 INFO L226 Difference]: Without dead ends: 160 [2020-10-29 03:17:28,745 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 250 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=133, Invalid=1349, Unknown=0, NotChecked=0, Total=1482 [2020-10-29 03:17:28,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-10-29 03:17:28,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 126. [2020-10-29 03:17:28,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-10-29 03:17:28,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2020-10-29 03:17:28,776 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 67 [2020-10-29 03:17:28,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:28,777 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2020-10-29 03:17:28,777 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-29 03:17:28,777 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2020-10-29 03:17:28,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-29 03:17:28,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:28,778 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:28,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-29 03:17:28,778 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:28,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:28,779 INFO L82 PathProgramCache]: Analyzing trace with hash 1514275876, now seen corresponding path program 13 times [2020-10-29 03:17:28,779 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:28,779 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225158469] [2020-10-29 03:17:28,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:28,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:28,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:29,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:30,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:30,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:32,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:33,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:33,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 03:17:33,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-29 03:17:33,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:17:33,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:33,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-29 03:17:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:33,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-29 03:17:33,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:34,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:34,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:34,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:34,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:34,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 03:17:34,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:34,676 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:34,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:34,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:34,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:17:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:34,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:34,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:34,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:34,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:34,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:34,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:34,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:34,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:34,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:17:34,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:34,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:34,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:34,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:34,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:34,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:34,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:34,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:34,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:34,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:34,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:17:34,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:34,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:34,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:34,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:34,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:34,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:34,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:34,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:34,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:34,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:17:34,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:34,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:34,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:34,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:34,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:34,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:34,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:34,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:34,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:34,709 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 8 proven. 124 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:17:34,710 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225158469] [2020-10-29 03:17:34,710 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:34,710 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-29 03:17:34,710 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [770016428] [2020-10-29 03:17:34,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-29 03:17:34,710 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:34,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-29 03:17:34,711 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=591, Unknown=0, NotChecked=0, Total=650 [2020-10-29 03:17:34,711 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand 26 states. [2020-10-29 03:17:36,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:36,934 INFO L93 Difference]: Finished difference Result 175 states and 196 transitions. [2020-10-29 03:17:36,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-10-29 03:17:36,935 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 70 [2020-10-29 03:17:36,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:36,937 INFO L225 Difference]: With dead ends: 175 [2020-10-29 03:17:36,937 INFO L226 Difference]: Without dead ends: 172 [2020-10-29 03:17:36,938 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 437 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=216, Invalid=2136, Unknown=0, NotChecked=0, Total=2352 [2020-10-29 03:17:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-29 03:17:36,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 122. [2020-10-29 03:17:36,978 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-10-29 03:17:36,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 136 transitions. [2020-10-29 03:17:36,984 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 136 transitions. Word has length 70 [2020-10-29 03:17:36,985 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:36,985 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 136 transitions. [2020-10-29 03:17:36,985 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-29 03:17:36,985 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 136 transitions. [2020-10-29 03:17:36,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-29 03:17:36,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:36,987 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:36,988 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-29 03:17:36,988 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:36,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:36,988 INFO L82 PathProgramCache]: Analyzing trace with hash -318902998, now seen corresponding path program 14 times [2020-10-29 03:17:36,988 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:36,989 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019810223] [2020-10-29 03:17:36,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:37,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:37,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:37,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-29 03:17:37,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:17:37,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 602 [2020-10-29 03:17:37,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:37,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 03:17:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:37,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 03:17:37,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:37,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:37,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:37,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:37,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:37,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:37,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:37,811 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:37,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:37,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:37,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:37,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-29 03:17:37,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:37,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:37,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:37,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:37,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:37,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:37,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:37,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:37,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:37,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2020-10-29 03:17:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:37,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:37,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:37,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:37,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:37,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:37,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:37,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:37,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:37,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-29 03:17:37,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:37,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:37,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:37,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:37,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:37,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:37,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:37,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:37,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:37,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:37,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:37,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-29 03:17:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:37,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:37,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:37,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:37,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:37,834 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:37,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:37,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:37,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:37,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-29 03:17:37,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:37,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:37,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:37,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:37,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:37,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:37,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:37,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:37,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:37,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:37,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:37,847 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 60 proven. 51 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:17:37,847 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019810223] [2020-10-29 03:17:37,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:37,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-29 03:17:37,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1902825645] [2020-10-29 03:17:37,848 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-29 03:17:37,849 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:37,849 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-29 03:17:37,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 03:17:37,849 INFO L87 Difference]: Start difference. First operand 122 states and 136 transitions. Second operand 16 states. [2020-10-29 03:17:38,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:38,209 INFO L93 Difference]: Finished difference Result 148 states and 165 transitions. [2020-10-29 03:17:38,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-29 03:17:38,210 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 72 [2020-10-29 03:17:38,210 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:38,212 INFO L225 Difference]: With dead ends: 148 [2020-10-29 03:17:38,212 INFO L226 Difference]: Without dead ends: 111 [2020-10-29 03:17:38,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=119, Invalid=343, Unknown=0, NotChecked=0, Total=462 [2020-10-29 03:17:38,213 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-29 03:17:38,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-10-29 03:17:38,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-10-29 03:17:38,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 122 transitions. [2020-10-29 03:17:38,239 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 122 transitions. Word has length 72 [2020-10-29 03:17:38,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:38,239 INFO L481 AbstractCegarLoop]: Abstraction has 111 states and 122 transitions. [2020-10-29 03:17:38,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-29 03:17:38,239 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 122 transitions. [2020-10-29 03:17:38,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-29 03:17:38,240 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:38,240 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:38,240 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-29 03:17:38,241 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:38,241 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:38,241 INFO L82 PathProgramCache]: Analyzing trace with hash -1062625111, now seen corresponding path program 15 times [2020-10-29 03:17:38,241 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:38,241 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1883563209] [2020-10-29 03:17:38,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:38,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:38,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:38,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:39,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:39,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:39,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:39,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:40,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:41,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:41,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:41,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:41,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:42,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:42,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:43,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:43,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-29 03:17:43,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-29 03:17:43,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:17:43,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:43,259 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:43,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:17:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 03:17:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:44,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:44,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:44,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:44,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:44,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:44,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:44,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:44,437 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:44,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:44,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:44,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:17:44,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:44,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:44,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:44,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:44,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:44,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:44,446 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:44,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:44,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:44,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:44,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:44,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:17:44,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:44,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:44,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:44,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:44,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:44,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:44,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:44,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:44,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:44,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:44,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:44,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:17:44,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:44,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:44,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:44,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:17:44,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:44,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:44,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:17:44,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:44,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:44,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:44,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:44,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:44,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:44,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:44,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:44,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:44,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:44,478 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 8 proven. 149 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:17:44,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1883563209] [2020-10-29 03:17:44,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:44,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:17:44,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201790212] [2020-10-29 03:17:44,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:17:44,480 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:44,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:17:44,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=640, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:17:44,481 INFO L87 Difference]: Start difference. First operand 111 states and 122 transitions. Second operand 27 states. [2020-10-29 03:17:47,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:47,409 INFO L93 Difference]: Finished difference Result 174 states and 196 transitions. [2020-10-29 03:17:47,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-29 03:17:47,410 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 73 [2020-10-29 03:17:47,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:47,413 INFO L225 Difference]: With dead ends: 174 [2020-10-29 03:17:47,413 INFO L226 Difference]: Without dead ends: 171 [2020-10-29 03:17:47,414 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 476 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=239, Invalid=2413, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:17:47,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2020-10-29 03:17:47,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 137. [2020-10-29 03:17:47,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-29 03:17:47,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 154 transitions. [2020-10-29 03:17:47,443 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 154 transitions. Word has length 73 [2020-10-29 03:17:47,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:47,443 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 154 transitions. [2020-10-29 03:17:47,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:17:47,444 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 154 transitions. [2020-10-29 03:17:47,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-29 03:17:47,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:47,445 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:47,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-29 03:17:47,445 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:47,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:47,446 INFO L82 PathProgramCache]: Analyzing trace with hash 1475378287, now seen corresponding path program 16 times [2020-10-29 03:17:47,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:47,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2025378585] [2020-10-29 03:17:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:47,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:47,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:47,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:47,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:47,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:49,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:52,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:52,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 03:17:52,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:17:52,461 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-29 03:17:52,461 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:52,461 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 03:17:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:17:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 03:17:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:53,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:17:53,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:53,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:53,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:53,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:17:53,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:53,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:53,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:53,064 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:53,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:17:53,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:53,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:17:53,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:53,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:17:53,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:53,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:53,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:53,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:53,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:53,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:53,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:53,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:53,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:53,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:53,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:17:53,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:53,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:53,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:53,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:53,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:53,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:53,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:53,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:53,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:53,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:53,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:17:53,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:53,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:53,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:53,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:53,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:17:53,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:53,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:53,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:53,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:53,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:17:53,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:53,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:53,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:53,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:53,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:53,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:17:53,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:53,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:17:53,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:53,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:17:53,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:53,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:17:53,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:53,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:17:53,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:17:53,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:17:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:17:53,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:17:53,107 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:17:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:17:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:17:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:17:53,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:17:53,163 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 21 proven. 121 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-10-29 03:17:53,163 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2025378585] [2020-10-29 03:17:53,163 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:17:53,163 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-29 03:17:53,163 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278842489] [2020-10-29 03:17:53,164 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-29 03:17:53,164 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:17:53,165 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-29 03:17:53,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-29 03:17:53,165 INFO L87 Difference]: Start difference. First operand 137 states and 154 transitions. Second operand 24 states. [2020-10-29 03:17:55,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:17:55,312 INFO L93 Difference]: Finished difference Result 160 states and 181 transitions. [2020-10-29 03:17:55,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-29 03:17:55,313 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 75 [2020-10-29 03:17:55,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:17:55,314 INFO L225 Difference]: With dead ends: 160 [2020-10-29 03:17:55,315 INFO L226 Difference]: Without dead ends: 157 [2020-10-29 03:17:55,316 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=152, Invalid=1654, Unknown=0, NotChecked=0, Total=1806 [2020-10-29 03:17:55,316 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2020-10-29 03:17:55,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 151. [2020-10-29 03:17:55,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 151 states. [2020-10-29 03:17:55,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 171 transitions. [2020-10-29 03:17:55,356 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 171 transitions. Word has length 75 [2020-10-29 03:17:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:17:55,356 INFO L481 AbstractCegarLoop]: Abstraction has 151 states and 171 transitions. [2020-10-29 03:17:55,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-29 03:17:55,356 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 171 transitions. [2020-10-29 03:17:55,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-29 03:17:55,358 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:17:55,358 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:17:55,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-29 03:17:55,358 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:17:55,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:17:55,359 INFO L82 PathProgramCache]: Analyzing trace with hash -1274480124, now seen corresponding path program 17 times [2020-10-29 03:17:55,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:17:55,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282707776] [2020-10-29 03:17:55,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:17:55,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:17:55,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:55,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:55,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:55,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:57,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:58,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:58,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:58,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:59,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:17:59,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:00,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:00,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-29 03:18:00,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-29 03:18:00,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-29 03:18:00,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:00,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:18:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-29 03:18:00,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:01,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:01,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:01,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:01,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:01,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:01,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:01,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:01,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:01,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:01,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:01,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:01,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:01,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:01,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:18:01,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:01,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:01,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:01,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:01,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:01,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:01,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:01,631 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:01,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:01,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:01,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:18:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:01,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:01,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:01,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:01,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:01,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:01,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:01,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:01,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:01,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:01,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:18:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:01,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:01,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:01,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:01,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:01,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:01,644 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:01,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:01,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:01,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:18:01,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:01,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:01,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:01,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:01,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:01,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:01,649 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:01,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:01,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:01,667 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 8 proven. 177 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-29 03:18:01,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282707776] [2020-10-29 03:18:01,667 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:01,667 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-29 03:18:01,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [442091683] [2020-10-29 03:18:01,668 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-29 03:18:01,668 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:01,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-29 03:18:01,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=740, Unknown=0, NotChecked=0, Total=812 [2020-10-29 03:18:01,669 INFO L87 Difference]: Start difference. First operand 151 states and 171 transitions. Second operand 29 states. [2020-10-29 03:18:04,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:04,407 INFO L93 Difference]: Finished difference Result 168 states and 189 transitions. [2020-10-29 03:18:04,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:18:04,408 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 76 [2020-10-29 03:18:04,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:04,411 INFO L225 Difference]: With dead ends: 168 [2020-10-29 03:18:04,411 INFO L226 Difference]: Without dead ends: 165 [2020-10-29 03:18:04,412 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 350 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=245, Invalid=1917, Unknown=0, NotChecked=0, Total=2162 [2020-10-29 03:18:04,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-29 03:18:04,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 159. [2020-10-29 03:18:04,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-29 03:18:04,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 179 transitions. [2020-10-29 03:18:04,443 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 179 transitions. Word has length 76 [2020-10-29 03:18:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:04,443 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 179 transitions. [2020-10-29 03:18:04,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-29 03:18:04,443 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 179 transitions. [2020-10-29 03:18:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-10-29 03:18:04,444 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:04,445 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:04,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-29 03:18:04,445 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:04,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:04,445 INFO L82 PathProgramCache]: Analyzing trace with hash -253826294, now seen corresponding path program 18 times [2020-10-29 03:18:04,445 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:04,445 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [847932112] [2020-10-29 03:18:04,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:04,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:04,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:04,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:04,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:04,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:04,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:05,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:05,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:07,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:07,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:07,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:09,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:09,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-10-29 03:18:09,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:18:09,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-29 03:18:09,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:09,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-29 03:18:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:09,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-29 03:18:09,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:10,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:10,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:10,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:10,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:10,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:10,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:10,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:10,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:10,419 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:10,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:10,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:10,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:18:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:10,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:10,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:10,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:10,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:10,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:10,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:10,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:10,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:10,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:10,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:18:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:10,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:10,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:10,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:10,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:10,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:10,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:10,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:10,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:10,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:10,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:18:10,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:10,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:10,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:10,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:10,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:10,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:10,438 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:10,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:10,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:10,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:18:10,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:10,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:10,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:10,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:10,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:10,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:10,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:10,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:10,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:10,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:18:10,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:10,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:10,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:10,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:10,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:10,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:10,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:10,450 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:10,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:10,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:10,471 INFO L134 CoverageAnalysis]: Checked inductivity of 192 backedges. 10 proven. 142 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:18:10,472 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [847932112] [2020-10-29 03:18:10,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:10,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:18:10,473 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1358660863] [2020-10-29 03:18:10,473 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:18:10,473 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:10,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:18:10,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=644, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:18:10,474 INFO L87 Difference]: Start difference. First operand 159 states and 179 transitions. Second operand 27 states. [2020-10-29 03:18:12,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:12,520 INFO L93 Difference]: Finished difference Result 186 states and 209 transitions. [2020-10-29 03:18:12,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2020-10-29 03:18:12,522 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 78 [2020-10-29 03:18:12,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:12,524 INFO L225 Difference]: With dead ends: 186 [2020-10-29 03:18:12,524 INFO L226 Difference]: Without dead ends: 183 [2020-10-29 03:18:12,526 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 337 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=148, Invalid=1744, Unknown=0, NotChecked=0, Total=1892 [2020-10-29 03:18:12,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2020-10-29 03:18:12,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 149. [2020-10-29 03:18:12,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2020-10-29 03:18:12,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 167 transitions. [2020-10-29 03:18:12,567 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 167 transitions. Word has length 78 [2020-10-29 03:18:12,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:12,568 INFO L481 AbstractCegarLoop]: Abstraction has 149 states and 167 transitions. [2020-10-29 03:18:12,568 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:18:12,568 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 167 transitions. [2020-10-29 03:18:12,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-29 03:18:12,569 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:12,569 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:12,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-29 03:18:12,570 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:12,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:12,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1149750641, now seen corresponding path program 19 times [2020-10-29 03:18:12,570 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:12,571 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843582104] [2020-10-29 03:18:12,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:12,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:12,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:12,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:13,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:13,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:13,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:13,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:13,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:16,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:16,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:16,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:16,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:17,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:17,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:17,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-29 03:18:17,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-29 03:18:17,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-29 03:18:17,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:17,615 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:17,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-29 03:18:17,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:17,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-29 03:18:17,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:18,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:18,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:18,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:18,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:18,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-29 03:18:18,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,739 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:18,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:18,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:18,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2020-10-29 03:18:18,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:18,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:18,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:18,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-29 03:18:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:18,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:18,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:18,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:18,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-29 03:18:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:18,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:18,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:18,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:18,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-29 03:18:18,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:18,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:18,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:18,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:18,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:18,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:18,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:18,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:18,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:18,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:18,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:18,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:18,775 INFO L134 CoverageAnalysis]: Checked inductivity of 217 backedges. 10 proven. 167 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:18:18,775 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843582104] [2020-10-29 03:18:18,775 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:18,775 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-29 03:18:18,775 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867194422] [2020-10-29 03:18:18,776 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-29 03:18:18,776 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:18,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-29 03:18:18,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=694, Unknown=0, NotChecked=0, Total=756 [2020-10-29 03:18:18,777 INFO L87 Difference]: Start difference. First operand 149 states and 167 transitions. Second operand 28 states. [2020-10-29 03:18:22,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:22,082 INFO L93 Difference]: Finished difference Result 198 states and 222 transitions. [2020-10-29 03:18:22,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2020-10-29 03:18:22,084 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 81 [2020-10-29 03:18:22,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:22,086 INFO L225 Difference]: With dead ends: 198 [2020-10-29 03:18:22,086 INFO L226 Difference]: Without dead ends: 195 [2020-10-29 03:18:22,088 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 586 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=243, Invalid=2619, Unknown=0, NotChecked=0, Total=2862 [2020-10-29 03:18:22,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-29 03:18:22,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 145. [2020-10-29 03:18:22,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-10-29 03:18:22,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 162 transitions. [2020-10-29 03:18:22,127 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 162 transitions. Word has length 81 [2020-10-29 03:18:22,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:22,127 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 162 transitions. [2020-10-29 03:18:22,127 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-29 03:18:22,127 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 162 transitions. [2020-10-29 03:18:22,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-10-29 03:18:22,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:22,128 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:22,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-29 03:18:22,129 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:22,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:22,129 INFO L82 PathProgramCache]: Analyzing trace with hash -459151275, now seen corresponding path program 20 times [2020-10-29 03:18:22,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:22,130 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862418948] [2020-10-29 03:18:22,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:22,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:22,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:22,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:22,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:22,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-29 03:18:22,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 03:18:22,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 592 [2020-10-29 03:18:22,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:22,735 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-29 03:18:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:22,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 03:18:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:22,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:22,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:22,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:22,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:22,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:22,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:22,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:22,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:22,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:22,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:22,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:22,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-29 03:18:22,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:22,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:22,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:22,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:22,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:22,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:22,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:22,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:22,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:22,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:22,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-29 03:18:22,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:23,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:23,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:23,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:23,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:23,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:23,002 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:23,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:23,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:23,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:23,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-29 03:18:23,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:23,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:23,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:23,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:23,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:23,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:23,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:23,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:23,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:23,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-29 03:18:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:23,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:23,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:23,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:23,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:23,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:23,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:23,013 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:23,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:23,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:23,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-29 03:18:23,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:23,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:23,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:23,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:23,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:23,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:23,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:23,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:23,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:23,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-29 03:18:23,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:23,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:23,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:23,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:23,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:23,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:23,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:23,026 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:23,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:23,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:23,035 INFO L134 CoverageAnalysis]: Checked inductivity of 214 backedges. 84 proven. 70 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2020-10-29 03:18:23,035 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862418948] [2020-10-29 03:18:23,035 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:23,035 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-29 03:18:23,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858631648] [2020-10-29 03:18:23,036 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-29 03:18:23,036 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:23,036 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-29 03:18:23,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2020-10-29 03:18:23,037 INFO L87 Difference]: Start difference. First operand 145 states and 162 transitions. Second operand 18 states. [2020-10-29 03:18:23,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:23,557 INFO L93 Difference]: Finished difference Result 171 states and 191 transitions. [2020-10-29 03:18:23,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-29 03:18:23,562 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 83 [2020-10-29 03:18:23,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:23,563 INFO L225 Difference]: With dead ends: 171 [2020-10-29 03:18:23,563 INFO L226 Difference]: Without dead ends: 130 [2020-10-29 03:18:23,564 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=152, Invalid=448, Unknown=0, NotChecked=0, Total=600 [2020-10-29 03:18:23,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-10-29 03:18:23,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-10-29 03:18:23,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-29 03:18:23,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 143 transitions. [2020-10-29 03:18:23,595 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 143 transitions. Word has length 83 [2020-10-29 03:18:23,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:23,595 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 143 transitions. [2020-10-29 03:18:23,595 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-29 03:18:23,595 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 143 transitions. [2020-10-29 03:18:23,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-10-29 03:18:23,596 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:23,597 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:23,597 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-29 03:18:23,597 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:23,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:23,597 INFO L82 PathProgramCache]: Analyzing trace with hash 1589772522, now seen corresponding path program 21 times [2020-10-29 03:18:23,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:23,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1403867081] [2020-10-29 03:18:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:23,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:23,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:23,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:23,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:24,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:24,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:25,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:25,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:25,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:26,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:28,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:28,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-29 03:18:28,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-29 03:18:28,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-29 03:18:28,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:28,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-29 03:18:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:28,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-29 03:18:28,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:29,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:29,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:29,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:29,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:29,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:29,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:29,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:29,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:29,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:29,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:29,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:29,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:29,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:29,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-29 03:18:29,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:29,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:29,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:29,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:29,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:29,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:29,911 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:29,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:29,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:29,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-29 03:18:29,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:29,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:29,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:29,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:29,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:29,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:29,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:29,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:29,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:29,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:29,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-29 03:18:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:29,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:29,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:29,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:29,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:29,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:29,922 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:29,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-29 03:18:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:29,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:29,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:29,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:29,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:29,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:29,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:29,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-29 03:18:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:29,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:29,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:29,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:29,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:29,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:29,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:29,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:29,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:29,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:29,953 INFO L134 CoverageAnalysis]: Checked inductivity of 245 backedges. 10 proven. 195 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:18:29,953 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1403867081] [2020-10-29 03:18:29,953 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:29,953 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-29 03:18:29,953 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454085960] [2020-10-29 03:18:29,954 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-29 03:18:29,954 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:29,954 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-29 03:18:29,955 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=800, Unknown=0, NotChecked=0, Total=870 [2020-10-29 03:18:29,955 INFO L87 Difference]: Start difference. First operand 130 states and 143 transitions. Second operand 30 states. [2020-10-29 03:18:33,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:33,101 INFO L93 Difference]: Finished difference Result 197 states and 222 transitions. [2020-10-29 03:18:33,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2020-10-29 03:18:33,102 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 84 [2020-10-29 03:18:33,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:33,105 INFO L225 Difference]: With dead ends: 197 [2020-10-29 03:18:33,105 INFO L226 Difference]: Without dead ends: 194 [2020-10-29 03:18:33,106 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 603 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=247, Invalid=2833, Unknown=0, NotChecked=0, Total=3080 [2020-10-29 03:18:33,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-10-29 03:18:33,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 160. [2020-10-29 03:18:33,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-10-29 03:18:33,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 180 transitions. [2020-10-29 03:18:33,145 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 180 transitions. Word has length 84 [2020-10-29 03:18:33,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:33,145 INFO L481 AbstractCegarLoop]: Abstraction has 160 states and 180 transitions. [2020-10-29 03:18:33,146 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-29 03:18:33,146 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 180 transitions. [2020-10-29 03:18:33,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-10-29 03:18:33,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:33,147 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:33,147 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-29 03:18:33,148 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:33,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:33,148 INFO L82 PathProgramCache]: Analyzing trace with hash -592344080, now seen corresponding path program 22 times [2020-10-29 03:18:33,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:33,149 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [959513299] [2020-10-29 03:18:33,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:33,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:33,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:33,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:34,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:37,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:38,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:38,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-29 03:18:38,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:18:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:18:38,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:38,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-29 03:18:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:38,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-29 03:18:38,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:39,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:39,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:39,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:39,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:39,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:39,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:39,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:18:39,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:39,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:39,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:39,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:39,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-29 03:18:39,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:39,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:39,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:39,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:39,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:39,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:39,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:39,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:39,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-29 03:18:39,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:39,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:39,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:39,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:39,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:39,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:39,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:39,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:39,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:39,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:39,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-29 03:18:39,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:39,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:39,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:39,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:39,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:39,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:39,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:39,126 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:39,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:39,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:39,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:39,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-29 03:18:39,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:39,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:39,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:39,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:39,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:39,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 03:18:39,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:39,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:39,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:39,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:39,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:39,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-29 03:18:39,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:39,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:39,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:39,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:39,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:39,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 03:18:39,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:39,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 03:18:39,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:39,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 03:18:39,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:39,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-29 03:18:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:39,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:39,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:39,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:39,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:39,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:39,244 INFO L134 CoverageAnalysis]: Checked inductivity of 236 backedges. 23 proven. 168 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2020-10-29 03:18:39,244 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [959513299] [2020-10-29 03:18:39,244 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:39,245 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-29 03:18:39,245 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829870472] [2020-10-29 03:18:39,245 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-29 03:18:39,245 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:39,246 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-29 03:18:39,246 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-10-29 03:18:39,247 INFO L87 Difference]: Start difference. First operand 160 states and 180 transitions. Second operand 27 states. [2020-10-29 03:18:42,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:42,123 INFO L93 Difference]: Finished difference Result 183 states and 207 transitions. [2020-10-29 03:18:42,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-29 03:18:42,134 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 86 [2020-10-29 03:18:42,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:42,135 INFO L225 Difference]: With dead ends: 183 [2020-10-29 03:18:42,136 INFO L226 Difference]: Without dead ends: 180 [2020-10-29 03:18:42,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 275 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=170, Invalid=2086, Unknown=0, NotChecked=0, Total=2256 [2020-10-29 03:18:42,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-29 03:18:42,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 174. [2020-10-29 03:18:42,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-29 03:18:42,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 197 transitions. [2020-10-29 03:18:42,199 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 197 transitions. Word has length 86 [2020-10-29 03:18:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:42,199 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 197 transitions. [2020-10-29 03:18:42,200 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-29 03:18:42,200 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 197 transitions. [2020-10-29 03:18:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-29 03:18:42,201 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:42,201 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:42,201 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2020-10-29 03:18:42,201 INFO L429 AbstractCegarLoop]: === Iteration 45 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:42,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:42,201 INFO L82 PathProgramCache]: Analyzing trace with hash 1755762863, now seen corresponding path program 23 times [2020-10-29 03:18:42,201 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:42,202 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644439218] [2020-10-29 03:18:42,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:42,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:42,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:42,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:43,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:43,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:44,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:46,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:47,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:47,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-29 03:18:47,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-29 03:18:47,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 03:18:47,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:47,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:47,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-29 03:18:47,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:47,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 03:18:47,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:48,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 03:18:48,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:48,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:48,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:48,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 03:18:48,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:48,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-29 03:18:48,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:48,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:48,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 03:18:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:48,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 03:18:48,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:48,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-29 03:18:48,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:48,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:48,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:48,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:48,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:48,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:48,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:48,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:48,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:48,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:48,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:48,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-29 03:18:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:48,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:48,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:48,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:48,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:48,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:48,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:48,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:48,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:48,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:48,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-29 03:18:48,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:48,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:48,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:48,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:48,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:48,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:48,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:48,654 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:48,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:48,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:48,655 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-29 03:18:48,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:48,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:48,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:48,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:48,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:48,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:48,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:48,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:48,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:48,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-29 03:18:48,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:48,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:48,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:48,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 03:18:48,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 03:18:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-29 03:18:48,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:48,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 03:18:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 03:18:48,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 03:18:48,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 03:18:48,684 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 10 proven. 226 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-10-29 03:18:48,685 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644439218] [2020-10-29 03:18:48,685 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 03:18:48,685 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32] total 32 [2020-10-29 03:18:48,685 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113598074] [2020-10-29 03:18:48,685 INFO L461 AbstractCegarLoop]: Interpolant automaton has 32 states [2020-10-29 03:18:48,685 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 03:18:48,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2020-10-29 03:18:48,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2020-10-29 03:18:48,686 INFO L87 Difference]: Start difference. First operand 174 states and 197 transitions. Second operand 32 states. [2020-10-29 03:18:52,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 03:18:52,138 INFO L93 Difference]: Finished difference Result 191 states and 215 transitions. [2020-10-29 03:18:52,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-29 03:18:52,140 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 87 [2020-10-29 03:18:52,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 03:18:52,143 INFO L225 Difference]: With dead ends: 191 [2020-10-29 03:18:52,144 INFO L226 Difference]: Without dead ends: 188 [2020-10-29 03:18:52,145 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 448 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=273, Invalid=2379, Unknown=0, NotChecked=0, Total=2652 [2020-10-29 03:18:52,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-29 03:18:52,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2020-10-29 03:18:52,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2020-10-29 03:18:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 205 transitions. [2020-10-29 03:18:52,208 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 205 transitions. Word has length 87 [2020-10-29 03:18:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 03:18:52,209 INFO L481 AbstractCegarLoop]: Abstraction has 182 states and 205 transitions. [2020-10-29 03:18:52,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 32 states. [2020-10-29 03:18:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 205 transitions. [2020-10-29 03:18:52,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-29 03:18:52,211 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 03:18:52,211 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 03:18:52,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2020-10-29 03:18:52,211 INFO L429 AbstractCegarLoop]: === Iteration 46 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 03:18:52,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 03:18:52,212 INFO L82 PathProgramCache]: Analyzing trace with hash 10583669, now seen corresponding path program 24 times [2020-10-29 03:18:52,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 03:18:52,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [330247288] [2020-10-29 03:18:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 03:18:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 03:18:52,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:52,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:52,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:52,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:52,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:52,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:53,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:54,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:56,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:56,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:56,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 03:18:57,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 03:18:57,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-29 03:18:57,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-29 03:18:57,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-10-29 03:18:57,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 03:18:57,235 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 03:18:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-29 03:18:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 03:18:57,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-29 03:18:57,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0