/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=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/array-examples/standard_strcpy_original-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:30:50,690 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:30:50,693 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:30:50,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:30:50,738 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:30:50,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:30:50,742 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:30:50,744 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:30:50,747 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:30:50,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:30:50,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:30:50,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:30:50,752 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:30:50,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:30:50,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:30:50,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:30:50,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:30:50,775 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:30:50,781 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:30:50,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:30:50,790 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:30:50,793 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:30:50,795 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:30:50,796 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:30:50,803 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:30:50,804 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:30:50,804 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:30:50,810 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:30:50,811 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:30:50,812 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:30:50,813 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:30:50,814 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:30:50,816 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:30:50,817 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:30:50,818 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:30:50,819 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:30:50,819 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:30:50,820 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:30:50,820 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:30:50,821 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:30:50,822 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:30:50,823 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 [2020-10-27 14:30:50,886 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:30:50,886 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:30:50,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:30:50,892 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:30:50,892 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:30:50,893 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:30:50,893 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:30:50,894 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:30:50,894 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:30:50,894 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:30:50,896 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:30:50,896 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:30:50,896 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:30:50,896 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:30:50,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:30:50,897 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:30:50,897 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:30:50,897 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:30:50,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:30:50,898 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:30:50,899 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:30:50,899 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:30:50,899 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:30:50,900 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:30:50,900 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:30:50,900 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:30:50,900 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:30:50,901 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:30:50,901 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:30:50,901 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:30:51,356 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:30:51,390 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:30:51,393 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:30:51,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:30:51,396 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:30:51,397 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-examples/standard_strcpy_original-2.i [2020-10-27 14:30:51,479 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a008924bc/5bde9540497f42d28d8e0012d7e75e8a/FLAG222a3f3d3 [2020-10-27 14:30:52,082 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:30:52,083 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-examples/standard_strcpy_original-2.i [2020-10-27 14:30:52,091 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a008924bc/5bde9540497f42d28d8e0012d7e75e8a/FLAG222a3f3d3 [2020-10-27 14:30:52,439 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a008924bc/5bde9540497f42d28d8e0012d7e75e8a [2020-10-27 14:30:52,442 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:30:52,450 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:30:52,452 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:30:52,452 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:30:52,457 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:30:52,458 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:30:52" (1/1) ... [2020-10-27 14:30:52,461 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7558a6a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52, skipping insertion in model container [2020-10-27 14:30:52,462 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:30:52" (1/1) ... [2020-10-27 14:30:52,471 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:30:52,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:30:52,666 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:30:52,676 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:30:52,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:30:52,719 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:30:52,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52 WrapperNode [2020-10-27 14:30:52,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:30:52,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:30:52,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:30:52,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:30:52,737 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52" (1/1) ... [2020-10-27 14:30:52,738 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52" (1/1) ... [2020-10-27 14:30:52,747 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52" (1/1) ... [2020-10-27 14:30:52,748 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52" (1/1) ... [2020-10-27 14:30:52,757 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52" (1/1) ... [2020-10-27 14:30:52,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52" (1/1) ... [2020-10-27 14:30:52,765 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52" (1/1) ... [2020-10-27 14:30:52,768 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:30:52,769 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:30:52,769 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:30:52,769 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:30:52,770 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52" (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 [2020-10-27 14:30:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:30:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:30:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:30:52,860 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:30:52,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:30:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:30:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:30:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 14:30:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 14:30:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:30:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:30:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:30:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:30:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:30:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:30:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:30:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:30:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:30:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:30:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:30:53,369 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:30:53,369 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-27 14:30:53,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:30:53 BoogieIcfgContainer [2020-10-27 14:30:53,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:30:53,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:30:53,374 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:30:53,406 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:30:53,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:30:52" (1/3) ... [2020-10-27 14:30:53,407 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656de660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:30:53, skipping insertion in model container [2020-10-27 14:30:53,408 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:30:52" (2/3) ... [2020-10-27 14:30:53,408 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@656de660 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:30:53, skipping insertion in model container [2020-10-27 14:30:53,409 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:30:53" (3/3) ... [2020-10-27 14:30:53,410 INFO L111 eAbstractionObserver]: Analyzing ICFG standard_strcpy_original-2.i [2020-10-27 14:30:53,424 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:30:53,430 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:30:53,446 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:30:53,476 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:30:53,477 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:30:53,477 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:30:53,477 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:30:53,477 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:30:53,477 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:30:53,478 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:30:53,478 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:30:53,498 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-27 14:30:53,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 14:30:53,505 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:53,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:53,507 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:53,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:53,514 INFO L82 PathProgramCache]: Analyzing trace with hash 1073737597, now seen corresponding path program 1 times [2020-10-27 14:30:53,525 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:53,525 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [561433721] [2020-10-27 14:30:53,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:53,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:53,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:53,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:54,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:54,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 14:30:54,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:54,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-10-27 14:30:54,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 14:30:54,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:54,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 14:30:54,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:54,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:54,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:54,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:54,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:54,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 14:30:54,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:54,138 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:30:54,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [561433721] [2020-10-27 14:30:54,142 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:30:54,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:30:54,144 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712401596] [2020-10-27 14:30:54,151 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:30:54,151 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:54,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:30:54,165 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:30:54,167 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 3 states. [2020-10-27 14:30:54,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:54,266 INFO L93 Difference]: Finished difference Result 54 states and 72 transitions. [2020-10-27 14:30:54,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:30:54,268 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-10-27 14:30:54,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:54,276 INFO L225 Difference]: With dead ends: 54 [2020-10-27 14:30:54,277 INFO L226 Difference]: Without dead ends: 24 [2020-10-27 14:30:54,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:30:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-27 14:30:54,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-27 14:30:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-27 14:30:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 28 transitions. [2020-10-27 14:30:54,324 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 28 transitions. Word has length 18 [2020-10-27 14:30:54,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:54,325 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 28 transitions. [2020-10-27 14:30:54,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:30:54,325 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 28 transitions. [2020-10-27 14:30:54,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 14:30:54,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:54,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:54,327 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:30:54,327 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:54,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:54,328 INFO L82 PathProgramCache]: Analyzing trace with hash -1061706762, now seen corresponding path program 1 times [2020-10-27 14:30:54,328 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:54,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1170518133] [2020-10-27 14:30:54,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:54,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:54,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:54,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:54,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:54,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 14:30:54,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:54,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 379 [2020-10-27 14:30:54,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:54,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:30:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:54,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 14:30:54,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:55,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:55,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:55,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:55,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:55,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:55,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 14:30:55,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:55,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:55,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:55,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:30:55,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:30:55,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1170518133] [2020-10-27 14:30:55,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:30:55,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 14:30:55,053 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147338419] [2020-10-27 14:30:55,056 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:30:55,057 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:55,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:30:55,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:30:55,068 INFO L87 Difference]: Start difference. First operand 24 states and 28 transitions. Second operand 8 states. [2020-10-27 14:30:55,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:55,347 INFO L93 Difference]: Finished difference Result 50 states and 61 transitions. [2020-10-27 14:30:55,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:30:55,348 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 20 [2020-10-27 14:30:55,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:55,349 INFO L225 Difference]: With dead ends: 50 [2020-10-27 14:30:55,349 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:30:55,351 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:30:55,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:30:55,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2020-10-27 14:30:55,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-10-27 14:30:55,360 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-10-27 14:30:55,360 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 20 [2020-10-27 14:30:55,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:55,360 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-10-27 14:30:55,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:30:55,361 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-10-27 14:30:55,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-10-27 14:30:55,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:55,362 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:55,362 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:30:55,363 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:55,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:55,363 INFO L82 PathProgramCache]: Analyzing trace with hash 2027535081, now seen corresponding path program 1 times [2020-10-27 14:30:55,364 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:55,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878827551] [2020-10-27 14:30:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:55,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:55,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:55,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 14:30:55,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:55,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-10-27 14:30:55,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:55,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 14:30:55,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:55,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:55,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:55,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:55,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:55,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:55,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:55,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:55,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:55,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:55,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:55,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:55,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 14:30:55,776 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878827551] [2020-10-27 14:30:55,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:30:55,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 14:30:55,777 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553259154] [2020-10-27 14:30:55,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 14:30:55,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:55,779 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 14:30:55,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:30:55,779 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 4 states. [2020-10-27 14:30:55,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:55,843 INFO L93 Difference]: Finished difference Result 54 states and 64 transitions. [2020-10-27 14:30:55,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 14:30:55,843 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-10-27 14:30:55,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:55,844 INFO L225 Difference]: With dead ends: 54 [2020-10-27 14:30:55,844 INFO L226 Difference]: Without dead ends: 31 [2020-10-27 14:30:55,845 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 14:30:55,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-10-27 14:30:55,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-10-27 14:30:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-27 14:30:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 36 transitions. [2020-10-27 14:30:55,868 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 36 transitions. Word has length 23 [2020-10-27 14:30:55,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:55,868 INFO L481 AbstractCegarLoop]: Abstraction has 31 states and 36 transitions. [2020-10-27 14:30:55,868 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 14:30:55,868 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 36 transitions. [2020-10-27 14:30:55,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-27 14:30:55,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:55,869 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:55,870 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:30:55,870 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:55,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:55,870 INFO L82 PathProgramCache]: Analyzing trace with hash 2066389379, now seen corresponding path program 1 times [2020-10-27 14:30:55,871 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:55,871 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1695052038] [2020-10-27 14:30:55,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:55,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:55,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:55,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:30:56,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:56,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-10-27 14:30:56,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:30:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:56,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:30:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:56,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:56,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:56,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:56,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:30:56,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:56,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:56,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:56,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:30:56,478 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1695052038] [2020-10-27 14:30:56,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:56,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:30:56,479 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649909217] [2020-10-27 14:30:56,479 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:30:56,479 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:56,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:30:56,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:30:56,481 INFO L87 Difference]: Start difference. First operand 31 states and 36 transitions. Second operand 9 states. [2020-10-27 14:30:56,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:56,738 INFO L93 Difference]: Finished difference Result 45 states and 50 transitions. [2020-10-27 14:30:56,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:30:56,738 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2020-10-27 14:30:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:56,739 INFO L225 Difference]: With dead ends: 45 [2020-10-27 14:30:56,740 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 14:30:56,740 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:30:56,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 14:30:56,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 39. [2020-10-27 14:30:56,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 14:30:56,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 44 transitions. [2020-10-27 14:30:56,750 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 44 transitions. Word has length 24 [2020-10-27 14:30:56,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:56,750 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 44 transitions. [2020-10-27 14:30:56,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:30:56,750 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 44 transitions. [2020-10-27 14:30:56,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 14:30:56,751 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:56,752 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:56,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 14:30:56,752 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:56,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:56,753 INFO L82 PathProgramCache]: Analyzing trace with hash -771285766, now seen corresponding path program 1 times [2020-10-27 14:30:56,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:56,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1062295929] [2020-10-27 14:30:56,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:56,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:56,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:57,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:57,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 14:30:57,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:57,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 465 [2020-10-27 14:30:57,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:30:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:57,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 14:30:57,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:57,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:57,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:57,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:57,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:57,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:30:57,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:57,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:57,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:57,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2020-10-27 14:30:57,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:57,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:57,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:57,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:57,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:57,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:57,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:57,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:57,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:57,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:57,369 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:30:57,370 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1062295929] [2020-10-27 14:30:57,370 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:57,370 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:30:57,370 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070547911] [2020-10-27 14:30:57,371 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:30:57,371 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:57,372 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:30:57,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:30:57,372 INFO L87 Difference]: Start difference. First operand 39 states and 44 transitions. Second operand 10 states. [2020-10-27 14:30:57,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:57,702 INFO L93 Difference]: Finished difference Result 77 states and 89 transitions. [2020-10-27 14:30:57,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:30:57,703 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-27 14:30:57,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:57,706 INFO L225 Difference]: With dead ends: 77 [2020-10-27 14:30:57,707 INFO L226 Difference]: Without dead ends: 54 [2020-10-27 14:30:57,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:30:57,708 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-27 14:30:57,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 42. [2020-10-27 14:30:57,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 14:30:57,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2020-10-27 14:30:57,720 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 33 [2020-10-27 14:30:57,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:57,720 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2020-10-27 14:30:57,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:30:57,721 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2020-10-27 14:30:57,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 14:30:57,722 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:57,722 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:57,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 14:30:57,722 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:57,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:57,723 INFO L82 PathProgramCache]: Analyzing trace with hash -119130015, now seen corresponding path program 2 times [2020-10-27 14:30:57,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:57,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716522749] [2020-10-27 14:30:57,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:57,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:57,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:58,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:58,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 14:30:58,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:30:58,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-27 14:30:58,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:30:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:30:58,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-10-27 14:30:58,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:58,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:30:58,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:58,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:58,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:30:58,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:58,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:30:58,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:58,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:30:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:58,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:30:58,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:58,651 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 14:30:58,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:58,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:58,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:30:58,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:30:58,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:30:58,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:30:58,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:30:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:30:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:30:58,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:30:58,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:30:58,672 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 14:30:58,673 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716522749] [2020-10-27 14:30:58,673 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:30:58,673 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:30:58,673 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [791355313] [2020-10-27 14:30:58,674 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:30:58,674 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:30:58,675 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:30:58,675 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:30:58,676 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 11 states. [2020-10-27 14:30:59,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:30:59,402 INFO L93 Difference]: Finished difference Result 57 states and 63 transitions. [2020-10-27 14:30:59,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:30:59,403 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 36 [2020-10-27 14:30:59,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:30:59,405 INFO L225 Difference]: With dead ends: 57 [2020-10-27 14:30:59,405 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 14:30:59,406 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=221, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:30:59,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 14:30:59,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 51. [2020-10-27 14:30:59,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 14:30:59,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-10-27 14:30:59,415 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 36 [2020-10-27 14:30:59,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:30:59,415 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-10-27 14:30:59,416 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:30:59,416 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-10-27 14:30:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 14:30:59,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:30:59,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:30:59,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 14:30:59,418 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:30:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:30:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash -1037215780, now seen corresponding path program 3 times [2020-10-27 14:30:59,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:30:59,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [601290902] [2020-10-27 14:30:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:30:59,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:30:59,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:30:59,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:00,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:00,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 14:31:00,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:00,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 884 [2020-10-27 14:31:00,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:31:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 14:31:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:00,491 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:00,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:00,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:00,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:00,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:00,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:00,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:00,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:00,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:00,504 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-10-27 14:31:00,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:00,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:00,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:00,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:00,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:00,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:00,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:00,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:00,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:00,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:31:00,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:00,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:00,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:00,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:00,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:00,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:00,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:00,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:00,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:00,530 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 20 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 14:31:00,530 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [601290902] [2020-10-27 14:31:00,531 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:00,531 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:31:00,531 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262441313] [2020-10-27 14:31:00,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:31:00,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:00,532 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:31:00,533 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:31:00,533 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 12 states. [2020-10-27 14:31:01,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:01,187 INFO L93 Difference]: Finished difference Result 95 states and 109 transitions. [2020-10-27 14:31:01,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:31:01,187 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-27 14:31:01,188 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:01,189 INFO L225 Difference]: With dead ends: 95 [2020-10-27 14:31:01,189 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:31:01,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=278, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:31:01,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:31:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 54. [2020-10-27 14:31:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 14:31:01,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 61 transitions. [2020-10-27 14:31:01,214 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 61 transitions. Word has length 45 [2020-10-27 14:31:01,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:01,214 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 61 transitions. [2020-10-27 14:31:01,214 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:31:01,214 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 61 transitions. [2020-10-27 14:31:01,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 14:31:01,223 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:01,223 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:01,224 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 14:31:01,224 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:01,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:01,225 INFO L82 PathProgramCache]: Analyzing trace with hash 1525911747, now seen corresponding path program 4 times [2020-10-27 14:31:01,225 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:01,225 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1904163524] [2020-10-27 14:31:01,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:01,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:01,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:01,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:01,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 14:31:01,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:01,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 605 [2020-10-27 14:31:01,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:31:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:01,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 14:31:01,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,125 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:02,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:02,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:02,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:02,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:02,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,135 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:31:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:02,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:02,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:02,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:31:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:02,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:02,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:02,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:02,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:02,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:02,185 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 4 proven. 31 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 14:31:02,186 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1904163524] [2020-10-27 14:31:02,186 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:02,186 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:31:02,187 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664795161] [2020-10-27 14:31:02,187 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:31:02,187 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:02,188 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:31:02,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:31:02,188 INFO L87 Difference]: Start difference. First operand 54 states and 61 transitions. Second operand 13 states. [2020-10-27 14:31:02,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:02,804 INFO L93 Difference]: Finished difference Result 69 states and 76 transitions. [2020-10-27 14:31:02,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:31:02,805 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-10-27 14:31:02,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:02,806 INFO L225 Difference]: With dead ends: 69 [2020-10-27 14:31:02,806 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 14:31:02,807 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=56, Invalid=324, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:31:02,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 14:31:02,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 63. [2020-10-27 14:31:02,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-10-27 14:31:02,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 70 transitions. [2020-10-27 14:31:02,827 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 70 transitions. Word has length 48 [2020-10-27 14:31:02,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:02,827 INFO L481 AbstractCegarLoop]: Abstraction has 63 states and 70 transitions. [2020-10-27 14:31:02,827 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:31:02,827 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 70 transitions. [2020-10-27 14:31:02,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 14:31:02,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:02,832 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:02,833 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 14:31:02,833 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:02,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:02,833 INFO L82 PathProgramCache]: Analyzing trace with hash 566250938, now seen corresponding path program 5 times [2020-10-27 14:31:02,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:02,834 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45634575] [2020-10-27 14:31:02,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:02,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:02,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:02,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:04,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:04,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 14:31:04,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:04,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1271 [2020-10-27 14:31:04,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:31:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:04,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 14:31:04,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:31:04,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:04,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:04,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:04,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:04,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:04,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:04,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:04,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:04,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:04,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 14:31:04,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 14:31:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:04,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:04,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:04,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:04,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:04,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:04,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:04,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:31:04,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-10-27 14:31:04,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:04,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:04,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:04,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:04,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:31:04,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:04,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:04,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:04,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:31:04,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:04,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:04,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:04,451 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:04,451 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:04,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 14:31:04,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:04,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:04,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:04,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:04,463 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 9 proven. 42 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 14:31:04,464 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45634575] [2020-10-27 14:31:04,464 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:04,464 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:31:04,465 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113261255] [2020-10-27 14:31:04,467 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:31:04,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:04,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:31:04,471 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:31:04,471 INFO L87 Difference]: Start difference. First operand 63 states and 70 transitions. Second operand 14 states. [2020-10-27 14:31:05,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:05,294 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2020-10-27 14:31:05,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:31:05,295 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-27 14:31:05,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:05,297 INFO L225 Difference]: With dead ends: 113 [2020-10-27 14:31:05,297 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 14:31:05,298 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=79, Invalid=427, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:31:05,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 14:31:05,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 66. [2020-10-27 14:31:05,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-27 14:31:05,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 74 transitions. [2020-10-27 14:31:05,308 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 74 transitions. Word has length 57 [2020-10-27 14:31:05,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:05,308 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 74 transitions. [2020-10-27 14:31:05,309 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:31:05,309 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 74 transitions. [2020-10-27 14:31:05,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 14:31:05,310 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:05,310 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:05,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 14:31:05,310 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:05,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:05,311 INFO L82 PathProgramCache]: Analyzing trace with hash -1557306335, now seen corresponding path program 6 times [2020-10-27 14:31:05,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:05,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1429271278] [2020-10-27 14:31:05,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:05,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:05,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:06,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:06,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 14:31:06,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:06,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 740 [2020-10-27 14:31:06,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:31:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:06,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 14:31:06,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:06,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:06,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:06,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:06,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:06,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:06,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:06,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:06,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:06,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:06,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:06,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:06,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-27 14:31:06,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:06,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:06,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:06,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:06,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:06,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:06,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:06,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:06,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:06,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:06,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:06,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-27 14:31:06,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:06,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:06,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:06,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:06,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:06,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:06,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:06,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:06,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:06,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-10-27 14:31:06,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:06,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:06,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:06,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:06,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:06,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:06,162 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:06,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:06,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:06,168 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 6 proven. 1 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 14:31:06,169 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1429271278] [2020-10-27 14:31:06,169 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:06,169 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 14:31:06,169 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660649676] [2020-10-27 14:31:06,170 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:31:06,170 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:06,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:31:06,172 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:31:06,172 INFO L87 Difference]: Start difference. First operand 66 states and 74 transitions. Second operand 5 states. [2020-10-27 14:31:06,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:06,255 INFO L93 Difference]: Finished difference Result 125 states and 141 transitions. [2020-10-27 14:31:06,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 14:31:06,255 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 60 [2020-10-27 14:31:06,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:06,259 INFO L225 Difference]: With dead ends: 125 [2020-10-27 14:31:06,259 INFO L226 Difference]: Without dead ends: 67 [2020-10-27 14:31:06,260 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:31:06,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-27 14:31:06,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 67. [2020-10-27 14:31:06,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 14:31:06,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 75 transitions. [2020-10-27 14:31:06,289 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 75 transitions. Word has length 60 [2020-10-27 14:31:06,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:06,289 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 75 transitions. [2020-10-27 14:31:06,289 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:31:06,290 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 75 transitions. [2020-10-27 14:31:06,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-27 14:31:06,292 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:06,292 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:06,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 14:31:06,292 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:06,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:06,294 INFO L82 PathProgramCache]: Analyzing trace with hash 39943623, now seen corresponding path program 7 times [2020-10-27 14:31:06,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:06,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1100393744] [2020-10-27 14:31:06,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:06,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:06,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:06,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:07,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:07,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 14:31:07,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:07,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-10-27 14:31:07,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 14:31:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:07,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 14:31:07,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:07,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:07,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:07,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:07,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:07,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:07,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:07,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:07,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:07,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:07,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:07,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-10-27 14:31:07,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:07,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:07,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:07,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:07,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:07,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:07,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:07,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:07,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:07,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:07,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:07,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:31:07,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:07,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:07,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:07,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:07,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:07,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:07,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:07,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:07,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:07,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:07,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:07,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:31:07,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:07,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:07,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:07,322 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:07,322 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:07,322 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:07,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:07,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:07,323 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:07,328 INFO L134 CoverageAnalysis]: Checked inductivity of 78 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 14:31:07,328 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1100393744] [2020-10-27 14:31:07,329 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:07,329 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 14:31:07,329 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [300809950] [2020-10-27 14:31:07,330 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 14:31:07,330 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:07,330 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 14:31:07,331 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:31:07,331 INFO L87 Difference]: Start difference. First operand 67 states and 75 transitions. Second operand 6 states. [2020-10-27 14:31:07,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:07,404 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2020-10-27 14:31:07,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:31:07,405 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 61 [2020-10-27 14:31:07,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:07,406 INFO L225 Difference]: With dead ends: 126 [2020-10-27 14:31:07,406 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 14:31:07,407 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-27 14:31:07,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 14:31:07,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-27 14:31:07,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 14:31:07,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2020-10-27 14:31:07,416 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 61 [2020-10-27 14:31:07,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:07,417 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2020-10-27 14:31:07,417 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 14:31:07,417 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2020-10-27 14:31:07,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-10-27 14:31:07,418 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:07,418 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:07,418 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 14:31:07,418 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:07,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:07,419 INFO L82 PathProgramCache]: Analyzing trace with hash -1984915231, now seen corresponding path program 8 times [2020-10-27 14:31:07,419 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:07,419 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [772980839] [2020-10-27 14:31:07,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:07,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:07,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:09,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:09,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 14:31:09,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:09,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1975 [2020-10-27 14:31:09,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:09,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:31:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:09,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 14:31:09,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:10,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:10,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:10,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:10,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:10,124 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:10,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:10,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:10,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:10,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:10,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:10,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:10,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 14:31:10,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:10,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:10,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:10,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:10,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:10,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:31:10,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:10,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:10,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:10,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:10,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:31:10,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:10,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:10,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:10,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:10,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:10,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:31:10,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:10,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:10,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:10,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:10,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:31:10,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:10,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:10,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:10,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:10,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:10,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:10,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:10,204 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 6 proven. 57 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 14:31:10,204 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [772980839] [2020-10-27 14:31:10,205 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:10,205 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:31:10,205 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962439960] [2020-10-27 14:31:10,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:31:10,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:10,209 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:31:10,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=183, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:31:10,210 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand 15 states. [2020-10-27 14:31:11,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:11,261 INFO L93 Difference]: Finished difference Result 83 states and 91 transitions. [2020-10-27 14:31:11,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:31:11,261 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 62 [2020-10-27 14:31:11,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:11,263 INFO L225 Difference]: With dead ends: 83 [2020-10-27 14:31:11,263 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 14:31:11,266 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:31:11,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 14:31:11,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 77. [2020-10-27 14:31:11,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 14:31:11,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 85 transitions. [2020-10-27 14:31:11,281 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 85 transitions. Word has length 62 [2020-10-27 14:31:11,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:11,281 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 85 transitions. [2020-10-27 14:31:11,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:31:11,281 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 85 transitions. [2020-10-27 14:31:11,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-10-27 14:31:11,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:11,284 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:11,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 14:31:11,285 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:11,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:11,285 INFO L82 PathProgramCache]: Analyzing trace with hash 600278876, now seen corresponding path program 9 times [2020-10-27 14:31:11,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:11,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416271349] [2020-10-27 14:31:11,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:11,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:13,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:13,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 14:31:13,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:13,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2331 [2020-10-27 14:31:13,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 14:31:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:13,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 14:31:13,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:13,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:13,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:13,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:13,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:13,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:13,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:13,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:13,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:13,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:13,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-10-27 14:31:13,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:13,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:13,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:13,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:13,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:13,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:13,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:13,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:13,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:13,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:13,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:31:13,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:13,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:13,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:13,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:13,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:13,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:13,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:13,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:13,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:13,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:31:13,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:13,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:13,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:13,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:13,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:13,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:13,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:13,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:13,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:13,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:31:13,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:13,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:13,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:13,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:13,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:13,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:13,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:13,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:13,731 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-27 14:31:13,732 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416271349] [2020-10-27 14:31:13,732 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:13,732 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 14:31:13,732 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689796347] [2020-10-27 14:31:13,733 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 14:31:13,733 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:13,734 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 14:31:13,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:31:13,734 INFO L87 Difference]: Start difference. First operand 77 states and 85 transitions. Second operand 7 states. [2020-10-27 14:31:13,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:13,819 INFO L93 Difference]: Finished difference Result 145 states and 161 transitions. [2020-10-27 14:31:13,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 14:31:13,820 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 71 [2020-10-27 14:31:13,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:13,821 INFO L225 Difference]: With dead ends: 145 [2020-10-27 14:31:13,821 INFO L226 Difference]: Without dead ends: 78 [2020-10-27 14:31:13,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:31:13,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-10-27 14:31:13,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-10-27 14:31:13,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 14:31:13,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 86 transitions. [2020-10-27 14:31:13,839 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 86 transitions. Word has length 71 [2020-10-27 14:31:13,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:13,839 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 86 transitions. [2020-10-27 14:31:13,839 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 14:31:13,839 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 86 transitions. [2020-10-27 14:31:13,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-10-27 14:31:13,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:13,846 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:13,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 14:31:13,846 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:13,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:13,847 INFO L82 PathProgramCache]: Analyzing trace with hash 1382746614, now seen corresponding path program 10 times [2020-10-27 14:31:13,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:13,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1422973987] [2020-10-27 14:31:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:13,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:13,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:13,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:16,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:16,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 14:31:16,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:16,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3110 [2020-10-27 14:31:16,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 14:31:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:16,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:16,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:17,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:17,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:17,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:17,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:17,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:17,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:17,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:17,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:17,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:17,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2020-10-27 14:31:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:17,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:17,063 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:17,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:17,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:17,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:17,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:17,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:17,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:17,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:17,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2020-10-27 14:31:17,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:17,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:17,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:17,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:17,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:17,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:17,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:17,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:17,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:17,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:17,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:17,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 14:31:17,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:17,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:17,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:17,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:17,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:17,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:17,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:17,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:17,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:17,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:17,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:31:17,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:17,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:17,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:17,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:17,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:17,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:17,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:17,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:17,084 INFO L134 CoverageAnalysis]: Checked inductivity of 118 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-27 14:31:17,084 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1422973987] [2020-10-27 14:31:17,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:17,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 14:31:17,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [203880572] [2020-10-27 14:31:17,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 14:31:17,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:17,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 14:31:17,086 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:31:17,086 INFO L87 Difference]: Start difference. First operand 78 states and 86 transitions. Second operand 8 states. [2020-10-27 14:31:17,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:17,171 INFO L93 Difference]: Finished difference Result 146 states and 162 transitions. [2020-10-27 14:31:17,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 14:31:17,172 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 72 [2020-10-27 14:31:17,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:17,173 INFO L225 Difference]: With dead ends: 146 [2020-10-27 14:31:17,173 INFO L226 Difference]: Without dead ends: 79 [2020-10-27 14:31:17,174 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 14:31:17,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-10-27 14:31:17,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 79. [2020-10-27 14:31:17,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-10-27 14:31:17,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 87 transitions. [2020-10-27 14:31:17,186 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 87 transitions. Word has length 72 [2020-10-27 14:31:17,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:17,187 INFO L481 AbstractCegarLoop]: Abstraction has 79 states and 87 transitions. [2020-10-27 14:31:17,187 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 14:31:17,187 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 87 transitions. [2020-10-27 14:31:17,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-10-27 14:31:17,191 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:17,191 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:17,191 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 14:31:17,191 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:17,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:17,192 INFO L82 PathProgramCache]: Analyzing trace with hash -130557284, now seen corresponding path program 11 times [2020-10-27 14:31:17,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:17,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697195528] [2020-10-27 14:31:17,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:17,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:17,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:17,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:20,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:20,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-10-27 14:31:20,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3555 [2020-10-27 14:31:20,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:31:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:20,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 14:31:20,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:21,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:21,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:21,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:21,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:21,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:21,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:21,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:21,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:21,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 14:31:21,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:21,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:21,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:21,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:21,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:21,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:21,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:21,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 14:31:21,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:21,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:21,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:21,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:21,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:21,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:21,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2020-10-27 14:31:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:21,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:21,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:21,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:21,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2020-10-27 14:31:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:21,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:21,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:21,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:21,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:21,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:21,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:21,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:21,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:21,097 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 12 proven. 72 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:31:21,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697195528] [2020-10-27 14:31:21,098 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:21,098 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:31:21,098 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225425038] [2020-10-27 14:31:21,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:31:21,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:21,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:31:21,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:31:21,100 INFO L87 Difference]: Start difference. First operand 79 states and 87 transitions. Second operand 16 states. [2020-10-27 14:31:22,258 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:22,259 INFO L93 Difference]: Finished difference Result 135 states and 153 transitions. [2020-10-27 14:31:22,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:31:22,259 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 73 [2020-10-27 14:31:22,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:22,261 INFO L225 Difference]: With dead ends: 135 [2020-10-27 14:31:22,261 INFO L226 Difference]: Without dead ends: 97 [2020-10-27 14:31:22,262 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=94, Invalid=608, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:31:22,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-10-27 14:31:22,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 82. [2020-10-27 14:31:22,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 82 states. [2020-10-27 14:31:22,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 91 transitions. [2020-10-27 14:31:22,283 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 91 transitions. Word has length 73 [2020-10-27 14:31:22,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:22,283 INFO L481 AbstractCegarLoop]: Abstraction has 82 states and 91 transitions. [2020-10-27 14:31:22,283 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:31:22,284 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 91 transitions. [2020-10-27 14:31:22,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-10-27 14:31:22,284 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:22,285 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:22,285 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 14:31:22,285 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:22,285 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:22,285 INFO L82 PathProgramCache]: Analyzing trace with hash -1190063741, now seen corresponding path program 12 times [2020-10-27 14:31:22,286 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:22,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [10450123] [2020-10-27 14:31:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:22,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:22,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:22,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:24,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:24,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-27 14:31:24,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2304 [2020-10-27 14:31:24,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:31:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:24,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 14:31:24,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,377 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:25,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:25,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:25,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:25,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:25,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:31:25,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:25,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:25,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:25,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:25,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,398 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:31:25,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:25,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:25,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:25,409 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:25,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:31:25,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:31:25,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:25,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:25,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:25,419 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:31:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:25,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:25,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:25,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:25,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:25,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:25,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:25,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:25,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:25,465 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 8 proven. 91 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 14:31:25,466 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [10450123] [2020-10-27 14:31:25,468 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:25,468 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:31:25,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193877627] [2020-10-27 14:31:25,469 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:31:25,469 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:25,470 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:31:25,470 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=241, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:31:25,470 INFO L87 Difference]: Start difference. First operand 82 states and 91 transitions. Second operand 17 states. [2020-10-27 14:31:26,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:26,652 INFO L93 Difference]: Finished difference Result 97 states and 106 transitions. [2020-10-27 14:31:26,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:31:26,654 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 76 [2020-10-27 14:31:26,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:26,655 INFO L225 Difference]: With dead ends: 97 [2020-10-27 14:31:26,655 INFO L226 Difference]: Without dead ends: 93 [2020-10-27 14:31:26,656 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=72, Invalid=578, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:31:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-27 14:31:26,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 91. [2020-10-27 14:31:26,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-10-27 14:31:26,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 100 transitions. [2020-10-27 14:31:26,665 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 100 transitions. Word has length 76 [2020-10-27 14:31:26,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:26,666 INFO L481 AbstractCegarLoop]: Abstraction has 91 states and 100 transitions. [2020-10-27 14:31:26,666 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:31:26,666 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 100 transitions. [2020-10-27 14:31:26,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-10-27 14:31:26,667 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:26,667 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:26,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 14:31:26,667 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:26,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:26,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1139254522, now seen corresponding path program 13 times [2020-10-27 14:31:26,668 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:26,668 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [993757407] [2020-10-27 14:31:26,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:26,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:26,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:26,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:30,484 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:30,484 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 14:31:30,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:30,485 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3792 [2020-10-27 14:31:30,485 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:31:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:30,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-27 14:31:30,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:30,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:30,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:30,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:30,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:30,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:30,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:30,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:30,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:30,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:30,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 14:31:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:30,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:30,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:30,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:30,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:30,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:30,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:30,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:30,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:30,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:31:30,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:30,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:30,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:30,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:30,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:30,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:30,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:30,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:30,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:30,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:31:30,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:30,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:30,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:30,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:30,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:30,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:31:30,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:30,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:30,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:30,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:30,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:31:30,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:30,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:30,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:30,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:30,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:30,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:30,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:30,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:30,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:31:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:30,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:30,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:30,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:30,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:30,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:31:30,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:30,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:30,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:30,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:30,960 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 15 proven. 110 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-27 14:31:30,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [993757407] [2020-10-27 14:31:30,960 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:30,961 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:31:30,961 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342682853] [2020-10-27 14:31:30,961 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:31:30,962 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:30,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:31:30,963 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:31:30,963 INFO L87 Difference]: Start difference. First operand 91 states and 100 transitions. Second operand 18 states. [2020-10-27 14:31:32,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:32,412 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2020-10-27 14:31:32,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 14:31:32,412 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 85 [2020-10-27 14:31:32,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:32,414 INFO L225 Difference]: With dead ends: 153 [2020-10-27 14:31:32,414 INFO L226 Difference]: Without dead ends: 110 [2020-10-27 14:31:32,415 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=106, Invalid=764, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:31:32,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-10-27 14:31:32,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 94. [2020-10-27 14:31:32,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-10-27 14:31:32,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2020-10-27 14:31:32,433 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 85 [2020-10-27 14:31:32,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:32,434 INFO L481 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2020-10-27 14:31:32,434 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:31:32,434 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2020-10-27 14:31:32,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-10-27 14:31:32,435 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:32,435 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:32,435 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 14:31:32,435 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:32,436 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:32,436 INFO L82 PathProgramCache]: Analyzing trace with hash 1658501473, now seen corresponding path program 14 times [2020-10-27 14:31:32,436 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:32,436 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221401254] [2020-10-27 14:31:32,436 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:32,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:32,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:34,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:34,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 14:31:34,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:34,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2143 [2020-10-27 14:31:34,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 14:31:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:34,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 14:31:34,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:34,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:34,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:34,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:34,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:34,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:34,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:34,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:34,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:34,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:34,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:34,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-10-27 14:31:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:34,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:34,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:34,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:34,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:34,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:34,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:34,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:34,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:34,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:31:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:34,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:34,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:34,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:34,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:34,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:34,693 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:34,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:34,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:31:34,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:34,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:34,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:34,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:34,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:34,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:34,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:34,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:31:34,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:34,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:34,701 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:34,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:34,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:34,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:34,702 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:34,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:34,702 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:34,704 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:31:34,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:34,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:34,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:34,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:34,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:34,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:34,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:34,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:34,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:34,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:34,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:34,728 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 173 trivial. 0 not checked. [2020-10-27 14:31:34,729 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221401254] [2020-10-27 14:31:34,729 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:34,729 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 14:31:34,729 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520312460] [2020-10-27 14:31:34,731 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 14:31:34,732 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:34,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 14:31:34,734 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:31:34,734 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand 9 states. [2020-10-27 14:31:34,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:34,826 INFO L93 Difference]: Finished difference Result 177 states and 197 transitions. [2020-10-27 14:31:34,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 14:31:34,827 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 88 [2020-10-27 14:31:34,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:34,828 INFO L225 Difference]: With dead ends: 177 [2020-10-27 14:31:34,829 INFO L226 Difference]: Without dead ends: 95 [2020-10-27 14:31:34,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2020-10-27 14:31:34,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2020-10-27 14:31:34,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2020-10-27 14:31:34,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 95 states. [2020-10-27 14:31:34,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2020-10-27 14:31:34,844 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 88 [2020-10-27 14:31:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:34,844 INFO L481 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2020-10-27 14:31:34,844 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 14:31:34,844 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2020-10-27 14:31:34,845 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-10-27 14:31:34,845 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:34,845 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:34,846 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 14:31:34,846 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:34,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:34,846 INFO L82 PathProgramCache]: Analyzing trace with hash 1127054855, now seen corresponding path program 15 times [2020-10-27 14:31:34,846 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:34,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [912951733] [2020-10-27 14:31:34,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:34,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:34,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:35,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:38,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:38,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-27 14:31:38,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:38,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3875 [2020-10-27 14:31:38,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:31:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:38,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-10-27 14:31:38,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:39,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:39,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:39,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:39,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:39,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:39,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:39,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:39,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:39,708 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:39,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:31:39,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:39,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:39,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:39,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:39,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:39,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:39,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:39,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:39,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:39,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:39,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:31:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:39,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:39,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:39,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:39,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:39,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:39,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:39,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:39,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:31:39,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:39,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:39,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:39,726 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:39,726 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:39,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:39,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:39,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:39,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:39,727 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:39,728 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:31:39,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:39,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:39,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:39,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:39,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:39,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:39,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:39,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:39,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:39,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:39,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:31:39,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:39,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:39,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:39,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:39,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:39,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:31:39,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:39,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:39,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:39,791 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 10 proven. 133 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2020-10-27 14:31:39,792 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [912951733] [2020-10-27 14:31:39,792 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:39,792 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:31:39,792 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150345580] [2020-10-27 14:31:39,793 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:31:39,793 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:39,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:31:39,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=307, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:31:39,794 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand 19 states. [2020-10-27 14:31:41,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:41,322 INFO L93 Difference]: Finished difference Result 110 states and 120 transitions. [2020-10-27 14:31:41,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:31:41,322 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 89 [2020-10-27 14:31:41,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:41,323 INFO L225 Difference]: With dead ends: 110 [2020-10-27 14:31:41,323 INFO L226 Difference]: Without dead ends: 106 [2020-10-27 14:31:41,324 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=80, Invalid=732, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:31:41,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-10-27 14:31:41,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 104. [2020-10-27 14:31:41,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 14:31:41,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 114 transitions. [2020-10-27 14:31:41,338 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 114 transitions. Word has length 89 [2020-10-27 14:31:41,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:41,340 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 114 transitions. [2020-10-27 14:31:41,340 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:31:41,340 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 114 transitions. [2020-10-27 14:31:41,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2020-10-27 14:31:41,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:41,341 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:41,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 14:31:41,342 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:41,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:41,343 INFO L82 PathProgramCache]: Analyzing trace with hash 1256393974, now seen corresponding path program 16 times [2020-10-27 14:31:41,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:41,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274204584] [2020-10-27 14:31:41,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:41,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:41,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:43,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:43,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 14:31:43,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:43,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2521 [2020-10-27 14:31:43,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:43,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:31:43,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:43,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 14:31:43,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:44,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:44,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:44,303 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:44,303 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:44,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:44,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:44,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:44,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:44,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-10-27 14:31:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:44,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:44,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:44,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:44,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:44,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:44,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:44,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:44,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:44,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:31:44,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:44,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:44,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:44,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:44,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:44,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:44,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:44,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:44,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:31:44,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:44,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:44,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:44,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:44,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:44,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:44,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:44,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:44,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:44,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:31:44,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:44,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:44,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:44,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:44,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:44,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:44,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:44,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:44,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:31:44,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:44,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:44,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:44,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:44,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:44,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:44,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:44,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:44,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:44,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:31:44,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:44,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:44,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:44,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:44,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:44,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:44,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:44,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:44,354 INFO L134 CoverageAnalysis]: Checked inductivity of 255 backedges. 18 proven. 156 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 14:31:44,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1274204584] [2020-10-27 14:31:44,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:44,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:31:44,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586254833] [2020-10-27 14:31:44,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:31:44,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:44,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:31:44,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=342, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:31:44,357 INFO L87 Difference]: Start difference. First operand 104 states and 114 transitions. Second operand 20 states. [2020-10-27 14:31:46,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:46,253 INFO L93 Difference]: Finished difference Result 172 states and 194 transitions. [2020-10-27 14:31:46,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:31:46,253 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 98 [2020-10-27 14:31:46,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:46,255 INFO L225 Difference]: With dead ends: 172 [2020-10-27 14:31:46,255 INFO L226 Difference]: Without dead ends: 124 [2020-10-27 14:31:46,257 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=124, Invalid=1066, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:31:46,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-10-27 14:31:46,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 107. [2020-10-27 14:31:46,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 107 states. [2020-10-27 14:31:46,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 118 transitions. [2020-10-27 14:31:46,268 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 118 transitions. Word has length 98 [2020-10-27 14:31:46,268 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:46,268 INFO L481 AbstractCegarLoop]: Abstraction has 107 states and 118 transitions. [2020-10-27 14:31:46,268 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:31:46,268 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 118 transitions. [2020-10-27 14:31:46,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2020-10-27 14:31:46,269 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:46,270 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:46,270 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 14:31:46,270 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:46,270 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:46,270 INFO L82 PathProgramCache]: Analyzing trace with hash -1180064663, now seen corresponding path program 17 times [2020-10-27 14:31:46,271 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:46,271 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1058005482] [2020-10-27 14:31:46,271 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:46,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:46,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:46,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:48,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:48,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-27 14:31:48,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2626 [2020-10-27 14:31:48,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:31:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:48,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 107 [2020-10-27 14:31:48,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:50,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:50,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:50,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:50,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:50,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:50,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:50,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:31:50,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:50,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:50,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:50,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:50,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:50,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:50,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:50,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:50,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:50,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:31:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:50,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:50,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:50,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:50,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:50,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:50,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:50,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:50,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:31:50,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:50,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:50,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:50,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:50,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:50,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:50,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:50,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:31:50,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:50,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:50,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:50,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:50,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:50,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:50,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:50,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:50,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:50,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:31:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:50,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:50,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:50,125 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:50,125 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:50,125 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:50,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:50,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:50,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:50,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:50,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:31:50,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:50,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:50,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:50,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:50,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:50,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:50,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:31:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:50,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:31:50,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:50,176 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 12 proven. 183 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-27 14:31:50,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1058005482] [2020-10-27 14:31:50,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:50,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:31:50,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963005165] [2020-10-27 14:31:50,177 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:31:50,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:50,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:31:50,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=381, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:31:50,178 INFO L87 Difference]: Start difference. First operand 107 states and 118 transitions. Second operand 21 states. [2020-10-27 14:31:52,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:52,032 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2020-10-27 14:31:52,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:31:52,033 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 101 [2020-10-27 14:31:52,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:52,035 INFO L225 Difference]: With dead ends: 122 [2020-10-27 14:31:52,035 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:31:52,036 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=83, Invalid=847, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:31:52,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:31:52,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 116. [2020-10-27 14:31:52,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 116 states. [2020-10-27 14:31:52,048 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 127 transitions. [2020-10-27 14:31:52,048 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 127 transitions. Word has length 101 [2020-10-27 14:31:52,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:52,048 INFO L481 AbstractCegarLoop]: Abstraction has 116 states and 127 transitions. [2020-10-27 14:31:52,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:31:52,048 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 127 transitions. [2020-10-27 14:31:52,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2020-10-27 14:31:52,056 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:52,056 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:52,056 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 14:31:52,056 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:52,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:52,057 INFO L82 PathProgramCache]: Analyzing trace with hash -892406572, now seen corresponding path program 18 times [2020-10-27 14:31:52,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:52,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053932289] [2020-10-27 14:31:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:52,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:52,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:54,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:54,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-10-27 14:31:54,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:54,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2886 [2020-10-27 14:31:54,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:54,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 14:31:54,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:54,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 14:31:54,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:55,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:55,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:55,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:55,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:55,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:55,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:55,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:55,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:55,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2020-10-27 14:31:55,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:55,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:55,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:55,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:55,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:55,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:55,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:55,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:55,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:55,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:55,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:55,074 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:31:55,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:55,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:55,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:55,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:55,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:55,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:55,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:55,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:55,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:31:55,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:55,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:55,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:55,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:55,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:55,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:55,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:55,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:55,082 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:31:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:55,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:55,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:55,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:55,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:55,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:31:55,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:55,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:55,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:55,088 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:31:55,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:55,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:55,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:55,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:55,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:55,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:55,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:31:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:55,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:55,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:55,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:55,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:55,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:55,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:55,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:55,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:31:55,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:55,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:55,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:55,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:55,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:55,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:55,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:55,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:55,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:55,104 INFO L134 CoverageAnalysis]: Checked inductivity of 336 backedges. 14 proven. 21 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-27 14:31:55,104 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053932289] [2020-10-27 14:31:55,104 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:55,104 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 14:31:55,104 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559018897] [2020-10-27 14:31:55,105 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 14:31:55,105 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:55,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 14:31:55,106 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:31:55,106 INFO L87 Difference]: Start difference. First operand 116 states and 127 transitions. Second operand 10 states. [2020-10-27 14:31:55,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:55,223 INFO L93 Difference]: Finished difference Result 220 states and 242 transitions. [2020-10-27 14:31:55,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 14:31:55,224 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 110 [2020-10-27 14:31:55,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:55,226 INFO L225 Difference]: With dead ends: 220 [2020-10-27 14:31:55,226 INFO L226 Difference]: Without dead ends: 117 [2020-10-27 14:31:55,226 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2020-10-27 14:31:55,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2020-10-27 14:31:55,241 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2020-10-27 14:31:55,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-10-27 14:31:55,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 128 transitions. [2020-10-27 14:31:55,243 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 128 transitions. Word has length 110 [2020-10-27 14:31:55,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:55,243 INFO L481 AbstractCegarLoop]: Abstraction has 117 states and 128 transitions. [2020-10-27 14:31:55,244 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 14:31:55,244 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 128 transitions. [2020-10-27 14:31:55,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 14:31:55,246 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:55,246 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:55,246 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 14:31:55,246 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:55,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:55,247 INFO L82 PathProgramCache]: Analyzing trace with hash -685762310, now seen corresponding path program 19 times [2020-10-27 14:31:55,247 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:55,247 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [613172358] [2020-10-27 14:31:55,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:55,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:55,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:58,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:58,941 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-10-27 14:31:58,941 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:31:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3669 [2020-10-27 14:31:58,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 14:31:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:31:58,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 14:31:58,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:31:59,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:31:59,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:59,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:31:59,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-10-27 14:31:59,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:59,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-10-27 14:31:59,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:59,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:31:59,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:59,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:31:59,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:59,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:31:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:59,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:31:59,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:31:59,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:31:59,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:31:59,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:31:59,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:31:59,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:31:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:31:59,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:31:59,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:31:59,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:31:59,098 INFO L134 CoverageAnalysis]: Checked inductivity of 343 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-27 14:31:59,098 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [613172358] [2020-10-27 14:31:59,099 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:31:59,099 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 14:31:59,099 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897475732] [2020-10-27 14:31:59,099 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 14:31:59,099 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:31:59,100 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 14:31:59,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:31:59,100 INFO L87 Difference]: Start difference. First operand 117 states and 128 transitions. Second operand 11 states. [2020-10-27 14:31:59,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:31:59,189 INFO L93 Difference]: Finished difference Result 221 states and 243 transitions. [2020-10-27 14:31:59,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 14:31:59,190 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 111 [2020-10-27 14:31:59,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:31:59,191 INFO L225 Difference]: With dead ends: 221 [2020-10-27 14:31:59,191 INFO L226 Difference]: Without dead ends: 118 [2020-10-27 14:31:59,192 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=63, Unknown=0, NotChecked=0, Total=110 [2020-10-27 14:31:59,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-10-27 14:31:59,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2020-10-27 14:31:59,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 118 states. [2020-10-27 14:31:59,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 129 transitions. [2020-10-27 14:31:59,203 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 129 transitions. Word has length 111 [2020-10-27 14:31:59,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:31:59,203 INFO L481 AbstractCegarLoop]: Abstraction has 118 states and 129 transitions. [2020-10-27 14:31:59,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 14:31:59,204 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 129 transitions. [2020-10-27 14:31:59,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-10-27 14:31:59,204 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:31:59,204 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:31:59,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 14:31:59,205 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:31:59,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:31:59,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1425242516, now seen corresponding path program 20 times [2020-10-27 14:31:59,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:31:59,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [773414659] [2020-10-27 14:31:59,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:31:59,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:31:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:31:59,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:03,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:03,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 14:32:03,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:03,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4454 [2020-10-27 14:32:03,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:03,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 14:32:03,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:03,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 14:32:03,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:04,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:04,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:04,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:04,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:04,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:04,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:04,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:04,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:04,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:04,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-10-27 14:32:04,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:04,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:04,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:04,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:04,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:04,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:04,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:04,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:04,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:04,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2020-10-27 14:32:04,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:04,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:04,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:04,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:04,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:32:04,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:04,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:04,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:04,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:04,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:04,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:04,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:04,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:04,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:04,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:32:04,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:04,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:04,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:04,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:04,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:04,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:04,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:04,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:04,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:04,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:32:04,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:04,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:04,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:04,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:04,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:04,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:04,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:04,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:04,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:32:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:04,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:04,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:04,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:04,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:04,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:04,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:04,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:04,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:04,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:32:04,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:04,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:04,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:04,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:04,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:04,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:04,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:04,253 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 21 proven. 210 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-27 14:32:04,253 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [773414659] [2020-10-27 14:32:04,253 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:04,253 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 14:32:04,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004398022] [2020-10-27 14:32:04,254 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 14:32:04,254 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:04,254 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 14:32:04,254 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=420, Unknown=0, NotChecked=0, Total=462 [2020-10-27 14:32:04,255 INFO L87 Difference]: Start difference. First operand 118 states and 129 transitions. Second operand 22 states. [2020-10-27 14:32:06,611 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:06,612 INFO L93 Difference]: Finished difference Result 192 states and 216 transitions. [2020-10-27 14:32:06,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:32:06,612 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 112 [2020-10-27 14:32:06,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:06,615 INFO L225 Difference]: With dead ends: 192 [2020-10-27 14:32:06,615 INFO L226 Difference]: Without dead ends: 139 [2020-10-27 14:32:06,616 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=139, Invalid=1343, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 14:32:06,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-10-27 14:32:06,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 121. [2020-10-27 14:32:06,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2020-10-27 14:32:06,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 133 transitions. [2020-10-27 14:32:06,629 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 133 transitions. Word has length 112 [2020-10-27 14:32:06,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:06,629 INFO L481 AbstractCegarLoop]: Abstraction has 121 states and 133 transitions. [2020-10-27 14:32:06,629 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 14:32:06,630 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 133 transitions. [2020-10-27 14:32:06,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-10-27 14:32:06,630 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:06,630 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:06,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 14:32:06,631 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:06,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:06,631 INFO L82 PathProgramCache]: Analyzing trace with hash 2113616647, now seen corresponding path program 21 times [2020-10-27 14:32:06,631 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:06,632 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [476071544] [2020-10-27 14:32:06,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:06,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:10,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:10,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 14:32:10,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4126 [2020-10-27 14:32:10,783 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 14:32:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:10,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 14:32:10,783 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:12,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:12,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:12,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:12,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:12,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:12,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:12,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:12,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:12,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:12,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:32:12,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:12,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:12,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:12,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:12,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:12,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:12,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:12,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:32:12,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:12,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:12,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:12,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:12,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:12,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:12,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:12,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:12,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:12,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:32:12,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:12,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:12,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:12,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:12,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:12,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:12,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:12,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:12,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:12,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:32:12,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:12,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:12,099 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:12,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:12,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:12,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:12,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:12,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:12,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:32:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:12,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:12,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:12,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:12,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:12,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:12,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:32:12,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:12,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:12,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:12,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:12,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:12,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:12,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:12,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:12,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:12,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:12,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:32:12,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:12,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:12,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:12,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:12,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:12,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:12,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:12,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:12,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:12,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:12,171 INFO L134 CoverageAnalysis]: Checked inductivity of 375 backedges. 14 proven. 241 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2020-10-27 14:32:12,171 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [476071544] [2020-10-27 14:32:12,171 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:12,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 14:32:12,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129559626] [2020-10-27 14:32:12,172 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 14:32:12,172 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:12,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 14:32:12,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=463, Unknown=0, NotChecked=0, Total=506 [2020-10-27 14:32:12,173 INFO L87 Difference]: Start difference. First operand 121 states and 133 transitions. Second operand 23 states. [2020-10-27 14:32:14,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:14,490 INFO L93 Difference]: Finished difference Result 136 states and 148 transitions. [2020-10-27 14:32:14,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 14:32:14,491 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 115 [2020-10-27 14:32:14,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:14,492 INFO L225 Difference]: With dead ends: 136 [2020-10-27 14:32:14,492 INFO L226 Difference]: Without dead ends: 132 [2020-10-27 14:32:14,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=96, Invalid=1094, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 14:32:14,493 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2020-10-27 14:32:14,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 130. [2020-10-27 14:32:14,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-10-27 14:32:14,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 142 transitions. [2020-10-27 14:32:14,506 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 142 transitions. Word has length 115 [2020-10-27 14:32:14,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:14,506 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 142 transitions. [2020-10-27 14:32:14,506 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 14:32:14,506 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 142 transitions. [2020-10-27 14:32:14,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-27 14:32:14,507 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:14,507 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:14,507 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 14:32:14,508 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:14,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:14,508 INFO L82 PathProgramCache]: Analyzing trace with hash 523890678, now seen corresponding path program 22 times [2020-10-27 14:32:14,508 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:14,508 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1629494548] [2020-10-27 14:32:14,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:14,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:14,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:14,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:18,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:18,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-27 14:32:18,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:18,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4355 [2020-10-27 14:32:18,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:18,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 14:32:18,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:18,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 14:32:18,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:18,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:18,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:19,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:19,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:19,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:19,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:19,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:19,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-10-27 14:32:19,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:19,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:19,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:19,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:19,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:19,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:19,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:19,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-10-27 14:32:19,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:19,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:19,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:19,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:19,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:19,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:19,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:19,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:32:19,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:19,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:19,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:19,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:19,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:19,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:19,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:19,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:32:19,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:19,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:19,015 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:19,015 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:19,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:19,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:19,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:19,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:32:19,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:19,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:19,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:19,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:19,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:19,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:19,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:32:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:19,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:19,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:19,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:19,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:19,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:19,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:19,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:19,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:32:19,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:19,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:19,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:19,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:19,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:19,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:19,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:19,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:32:19,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:19,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:19,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:19,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:32:19,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:19,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:19,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:19,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:19,036 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 16 proven. 36 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2020-10-27 14:32:19,036 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1629494548] [2020-10-27 14:32:19,036 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:19,036 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 14:32:19,036 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025737197] [2020-10-27 14:32:19,037 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 14:32:19,037 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:19,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 14:32:19,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:32:19,038 INFO L87 Difference]: Start difference. First operand 130 states and 142 transitions. Second operand 12 states. [2020-10-27 14:32:19,162 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:19,162 INFO L93 Difference]: Finished difference Result 246 states and 270 transitions. [2020-10-27 14:32:19,163 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 14:32:19,163 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 124 [2020-10-27 14:32:19,163 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:19,164 INFO L225 Difference]: With dead ends: 246 [2020-10-27 14:32:19,164 INFO L226 Difference]: Without dead ends: 131 [2020-10-27 14:32:19,165 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=75, Unknown=0, NotChecked=0, Total=132 [2020-10-27 14:32:19,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-10-27 14:32:19,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-10-27 14:32:19,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 14:32:19,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 143 transitions. [2020-10-27 14:32:19,187 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 143 transitions. Word has length 124 [2020-10-27 14:32:19,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:19,187 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 143 transitions. [2020-10-27 14:32:19,188 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 14:32:19,188 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 143 transitions. [2020-10-27 14:32:19,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-10-27 14:32:19,190 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:19,190 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:19,190 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 14:32:19,190 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:19,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:19,191 INFO L82 PathProgramCache]: Analyzing trace with hash -78784100, now seen corresponding path program 23 times [2020-10-27 14:32:19,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:19,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [960907880] [2020-10-27 14:32:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:19,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:19,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 14:32:24,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:24,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-10-27 14:32:24,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 14:32:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:24,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 14:32:24,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:24,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:24,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:24,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:24,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:24,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:24,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:24,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2020-10-27 14:32:24,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:24,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:24,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:24,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:24,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:24,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:24,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:24,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 14:32:24,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:24,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:24,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:24,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:24,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:24,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:24,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,888 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:32:24,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:24,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:24,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:24,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:24,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:24,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:24,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:32:24,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:24,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:24,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:24,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:24,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:24,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:32:24,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:24,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:24,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:24,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:24,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:24,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:24,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:24,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:32:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:24,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:24,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:24,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:24,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:24,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:32:24,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:24,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:24,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:24,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:24,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:24,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:32:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:24,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:24,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:24,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:24,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:24,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:24,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:24,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:24,965 INFO L134 CoverageAnalysis]: Checked inductivity of 453 backedges. 24 proven. 272 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-27 14:32:24,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [960907880] [2020-10-27 14:32:24,966 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:24,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 14:32:24,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053460850] [2020-10-27 14:32:24,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 14:32:24,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:24,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 14:32:24,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=506, Unknown=0, NotChecked=0, Total=552 [2020-10-27 14:32:24,968 INFO L87 Difference]: Start difference. First operand 131 states and 143 transitions. Second operand 24 states. [2020-10-27 14:32:27,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:27,779 INFO L93 Difference]: Finished difference Result 211 states and 237 transitions. [2020-10-27 14:32:27,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:32:27,779 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 125 [2020-10-27 14:32:27,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:27,781 INFO L225 Difference]: With dead ends: 211 [2020-10-27 14:32:27,781 INFO L226 Difference]: Without dead ends: 153 [2020-10-27 14:32:27,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 171 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=1652, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:32:27,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-10-27 14:32:27,821 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 134. [2020-10-27 14:32:27,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2020-10-27 14:32:27,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 147 transitions. [2020-10-27 14:32:27,825 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 147 transitions. Word has length 125 [2020-10-27 14:32:27,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:27,825 INFO L481 AbstractCegarLoop]: Abstraction has 134 states and 147 transitions. [2020-10-27 14:32:27,825 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 14:32:27,825 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 147 transitions. [2020-10-27 14:32:27,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-10-27 14:32:27,828 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:27,828 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:27,828 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 14:32:27,829 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:27,829 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:27,829 INFO L82 PathProgramCache]: Analyzing trace with hash -1815672445, now seen corresponding path program 24 times [2020-10-27 14:32:27,829 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:27,830 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427569569] [2020-10-27 14:32:27,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:27,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:27,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:28,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:32,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:32,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-27 14:32:32,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5026 [2020-10-27 14:32:32,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 14:32:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:32,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 14:32:32,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:34,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:34,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:32:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:34,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:34,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:32:34,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:34,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:32:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:34,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:32:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:34,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:34,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:32:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:34,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:34,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:32:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:34,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:34,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:34,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 14:32:34,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:34,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:34,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,560 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 14:32:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:34,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:34,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:34,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:34,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:34,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:34,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:34,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:34,631 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 16 proven. 307 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-27 14:32:34,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427569569] [2020-10-27 14:32:34,631 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:34,631 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 14:32:34,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073163975] [2020-10-27 14:32:34,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 14:32:34,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:34,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 14:32:34,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=553, Unknown=0, NotChecked=0, Total=600 [2020-10-27 14:32:34,633 INFO L87 Difference]: Start difference. First operand 134 states and 147 transitions. Second operand 25 states. [2020-10-27 14:32:37,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:37,433 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2020-10-27 14:32:37,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 14:32:37,434 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 128 [2020-10-27 14:32:37,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:37,436 INFO L225 Difference]: With dead ends: 149 [2020-10-27 14:32:37,437 INFO L226 Difference]: Without dead ends: 145 [2020-10-27 14:32:37,438 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 75 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=104, Invalid=1302, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 14:32:37,438 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-10-27 14:32:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2020-10-27 14:32:37,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-27 14:32:37,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 156 transitions. [2020-10-27 14:32:37,449 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 156 transitions. Word has length 128 [2020-10-27 14:32:37,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:37,450 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 156 transitions. [2020-10-27 14:32:37,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 14:32:37,450 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 156 transitions. [2020-10-27 14:32:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-10-27 14:32:37,451 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:37,451 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:37,451 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 14:32:37,451 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:37,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:37,452 INFO L82 PathProgramCache]: Analyzing trace with hash -899109638, now seen corresponding path program 25 times [2020-10-27 14:32:37,452 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:37,452 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [659282563] [2020-10-27 14:32:37,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:37,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:37,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:37,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:42,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:42,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 14:32:42,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:42,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 14:32:42,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 14:32:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:42,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-27 14:32:42,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:43,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:43,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:43,225 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:43,226 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,228 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-10-27 14:32:43,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:43,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:43,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:43,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2020-10-27 14:32:43,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:43,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:43,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:43,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2020-10-27 14:32:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:43,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:43,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:43,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-27 14:32:43,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:43,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:43,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:43,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:43,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2020-10-27 14:32:43,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:43,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:43,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:43,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 14:32:43,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:43,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:43,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:43,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2020-10-27 14:32:43,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:43,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:32:43,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:43,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2020-10-27 14:32:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:43,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:43,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:43,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:43,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2020-10-27 14:32:43,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:43,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:43,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:43,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:43,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:43,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:43,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:43,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:43,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:43,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:43,340 INFO L134 CoverageAnalysis]: Checked inductivity of 558 backedges. 27 proven. 342 refuted. 0 times theorem prover too weak. 189 trivial. 0 not checked. [2020-10-27 14:32:43,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [659282563] [2020-10-27 14:32:43,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:43,340 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 14:32:43,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493152881] [2020-10-27 14:32:43,343 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 14:32:43,343 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:43,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 14:32:43,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=600, Unknown=0, NotChecked=0, Total=650 [2020-10-27 14:32:43,344 INFO L87 Difference]: Start difference. First operand 143 states and 156 transitions. Second operand 26 states. [2020-10-27 14:32:46,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:46,778 INFO L93 Difference]: Finished difference Result 229 states and 257 transitions. [2020-10-27 14:32:46,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2020-10-27 14:32:46,779 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 137 [2020-10-27 14:32:46,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:46,782 INFO L225 Difference]: With dead ends: 229 [2020-10-27 14:32:46,782 INFO L226 Difference]: Without dead ends: 166 [2020-10-27 14:32:46,783 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=169, Invalid=1993, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:32:46,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-10-27 14:32:46,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 146. [2020-10-27 14:32:46,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 146 states. [2020-10-27 14:32:46,798 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 160 transitions. [2020-10-27 14:32:46,799 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 160 transitions. Word has length 137 [2020-10-27 14:32:46,799 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:46,799 INFO L481 AbstractCegarLoop]: Abstraction has 146 states and 160 transitions. [2020-10-27 14:32:46,799 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 14:32:46,799 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 160 transitions. [2020-10-27 14:32:46,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-10-27 14:32:46,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:46,800 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:46,800 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 14:32:46,800 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:46,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:46,801 INFO L82 PathProgramCache]: Analyzing trace with hash -1144112543, now seen corresponding path program 26 times [2020-10-27 14:32:46,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:46,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [4426740] [2020-10-27 14:32:46,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:46,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:51,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:51,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-10-27 14:32:51,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:51,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 14:32:51,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 14:32:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:51,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 14:32:51,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:51,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:51,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:51,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:51,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:51,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:51,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:51,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:51,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:51,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:51,986 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-10-27 14:32:51,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:51,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:51,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:51,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:51,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:51,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:51,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:51,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:51,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:51,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:32:51,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:51,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:51,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:51,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:51,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:51,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:51,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:51,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:51,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:32:51,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:51,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:51,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:51,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:51,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:51,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:51,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:52,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:52,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:32:52,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:52,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:52,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:52,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:52,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:52,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:52,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:52,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:52,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:32:52,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:52,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:52,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:52,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:52,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:52,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:52,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:52,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 14:32:52,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:52,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:52,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:52,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:52,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:52,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:52,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:52,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:52,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:52,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:52,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:32:52,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:52,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:52,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:52,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:52,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:52,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:52,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:52,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:52,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:52,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-27 14:32:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:52,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:52,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:52,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:52,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:52,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:52,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:52,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:52,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:52,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 14:32:52,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:52,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:52,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:52,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:52,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:52,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:32:52,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:32:52,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:52,048 INFO L134 CoverageAnalysis]: Checked inductivity of 588 backedges. 18 proven. 45 refuted. 0 times theorem prover too weak. 525 trivial. 0 not checked. [2020-10-27 14:32:52,049 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [4426740] [2020-10-27 14:32:52,049 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:52,049 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 14:32:52,049 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992319084] [2020-10-27 14:32:52,050 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 14:32:52,050 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:52,050 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 14:32:52,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:32:52,055 INFO L87 Difference]: Start difference. First operand 146 states and 160 transitions. Second operand 13 states. [2020-10-27 14:32:52,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:32:52,179 INFO L93 Difference]: Finished difference Result 277 states and 305 transitions. [2020-10-27 14:32:52,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 14:32:52,180 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 140 [2020-10-27 14:32:52,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:32:52,181 INFO L225 Difference]: With dead ends: 277 [2020-10-27 14:32:52,181 INFO L226 Difference]: Without dead ends: 147 [2020-10-27 14:32:52,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=88, Unknown=0, NotChecked=0, Total=156 [2020-10-27 14:32:52,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2020-10-27 14:32:52,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2020-10-27 14:32:52,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 147 states. [2020-10-27 14:32:52,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 161 transitions. [2020-10-27 14:32:52,198 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 161 transitions. Word has length 140 [2020-10-27 14:32:52,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:32:52,198 INFO L481 AbstractCegarLoop]: Abstraction has 147 states and 161 transitions. [2020-10-27 14:32:52,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 14:32:52,198 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 161 transitions. [2020-10-27 14:32:52,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-10-27 14:32:52,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:32:52,199 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:32:52,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 14:32:52,200 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:32:52,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:32:52,200 INFO L82 PathProgramCache]: Analyzing trace with hash -82438137, now seen corresponding path program 27 times [2020-10-27 14:32:52,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:32:52,200 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1846636224] [2020-10-27 14:32:52,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:32:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:52,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:52,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:57,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:57,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 14:32:57,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:32:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 14:32:57,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 14:32:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:32:57,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 153 [2020-10-27 14:32:57,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:32:59,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:32:59,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:59,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:32:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:32:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:32:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:59,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:59,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:32:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:59,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:59,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:59,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:32:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:59,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:59,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:32:59,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:59,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:32:59,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:59,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:59,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:32:59,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:59,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:59,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:32:59,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:59,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,090 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:32:59,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:32:59,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:59,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:59,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,096 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 14:32:59,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:32:59,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:32:59,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:32:59,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:32:59,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:32:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:32:59,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:32:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:32:59,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:32:59,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:32:59,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:32:59,212 INFO L134 CoverageAnalysis]: Checked inductivity of 598 backedges. 18 proven. 381 refuted. 0 times theorem prover too weak. 199 trivial. 0 not checked. [2020-10-27 14:32:59,212 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1846636224] [2020-10-27 14:32:59,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:32:59,213 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-10-27 14:32:59,213 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114068801] [2020-10-27 14:32:59,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 14:32:59,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:32:59,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 14:32:59,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=651, Unknown=0, NotChecked=0, Total=702 [2020-10-27 14:32:59,214 INFO L87 Difference]: Start difference. First operand 147 states and 161 transitions. Second operand 27 states. [2020-10-27 14:33:02,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:02,386 INFO L93 Difference]: Finished difference Result 162 states and 176 transitions. [2020-10-27 14:33:02,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2020-10-27 14:33:02,387 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 141 [2020-10-27 14:33:02,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:02,388 INFO L225 Difference]: With dead ends: 162 [2020-10-27 14:33:02,389 INFO L226 Difference]: Without dead ends: 158 [2020-10-27 14:33:02,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=112, Invalid=1528, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 14:33:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-10-27 14:33:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 156. [2020-10-27 14:33:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-10-27 14:33:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 170 transitions. [2020-10-27 14:33:02,402 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 170 transitions. Word has length 141 [2020-10-27 14:33:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:02,403 INFO L481 AbstractCegarLoop]: Abstraction has 156 states and 170 transitions. [2020-10-27 14:33:02,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 14:33:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 170 transitions. [2020-10-27 14:33:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-10-27 14:33:02,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:02,404 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:02,404 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 14:33:02,405 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:02,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:02,405 INFO L82 PathProgramCache]: Analyzing trace with hash 638038774, now seen corresponding path program 28 times [2020-10-27 14:33:02,405 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:02,405 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [307061176] [2020-10-27 14:33:02,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:02,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:02,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:02,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:07,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:07,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-10-27 14:33:07,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:07,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 14:33:07,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:07,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 14:33:07,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:07,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-27 14:33:07,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:08,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:08,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:08,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:08,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:08,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2020-10-27 14:33:08,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:33:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:33:08,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:33:08,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:08,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:33:08,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:33:08,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:08,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:33:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:08,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:33:08,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:08,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 14:33:08,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:33:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:08,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:08,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:08,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:08,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:08,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:08,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:08,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:08,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:08,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:08,321 INFO L134 CoverageAnalysis]: Checked inductivity of 685 backedges. 30 proven. 420 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-27 14:33:08,321 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [307061176] [2020-10-27 14:33:08,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:08,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [28] total 28 [2020-10-27 14:33:08,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059154920] [2020-10-27 14:33:08,322 INFO L461 AbstractCegarLoop]: Interpolant automaton has 28 states [2020-10-27 14:33:08,322 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:08,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2020-10-27 14:33:08,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=702, Unknown=0, NotChecked=0, Total=756 [2020-10-27 14:33:08,323 INFO L87 Difference]: Start difference. First operand 156 states and 170 transitions. Second operand 28 states. [2020-10-27 14:33:12,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:12,443 INFO L93 Difference]: Finished difference Result 248 states and 278 transitions. [2020-10-27 14:33:12,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2020-10-27 14:33:12,444 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 150 [2020-10-27 14:33:12,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:12,447 INFO L225 Difference]: With dead ends: 248 [2020-10-27 14:33:12,447 INFO L226 Difference]: Without dead ends: 180 [2020-10-27 14:33:12,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=184, Invalid=2366, Unknown=0, NotChecked=0, Total=2550 [2020-10-27 14:33:12,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2020-10-27 14:33:12,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 159. [2020-10-27 14:33:12,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-10-27 14:33:12,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 174 transitions. [2020-10-27 14:33:12,465 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 174 transitions. Word has length 150 [2020-10-27 14:33:12,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:12,465 INFO L481 AbstractCegarLoop]: Abstraction has 159 states and 174 transitions. [2020-10-27 14:33:12,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 28 states. [2020-10-27 14:33:12,466 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 174 transitions. [2020-10-27 14:33:12,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2020-10-27 14:33:12,466 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:12,467 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:12,467 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 14:33:12,467 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:12,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:12,467 INFO L82 PathProgramCache]: Analyzing trace with hash -860629655, now seen corresponding path program 29 times [2020-10-27 14:33:12,468 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:12,468 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2142557762] [2020-10-27 14:33:12,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:12,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:12,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:13,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:17,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:17,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 183 [2020-10-27 14:33:17,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:17,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-10-27 14:33:17,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 14:33:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:17,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-27 14:33:17,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:19,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:19,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:19,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:19,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,600 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:33:19,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:33:19,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:33:19,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 14:33:19,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:33:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:33:19,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:33:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 14:33:19,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 14:33:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 14:33:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:19,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:19,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:19,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:19,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:19,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:19,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:19,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:19,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:19,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:19,740 INFO L134 CoverageAnalysis]: Checked inductivity of 718 backedges. 20 proven. 463 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-27 14:33:19,740 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2142557762] [2020-10-27 14:33:19,741 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:19,741 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-10-27 14:33:19,741 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [229425443] [2020-10-27 14:33:19,741 INFO L461 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-10-27 14:33:19,741 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:19,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-10-27 14:33:19,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=757, Unknown=0, NotChecked=0, Total=812 [2020-10-27 14:33:19,742 INFO L87 Difference]: Start difference. First operand 159 states and 174 transitions. Second operand 29 states. [2020-10-27 14:33:23,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:23,600 INFO L93 Difference]: Finished difference Result 174 states and 189 transitions. [2020-10-27 14:33:23,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 14:33:23,601 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 153 [2020-10-27 14:33:23,602 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:23,604 INFO L225 Difference]: With dead ends: 174 [2020-10-27 14:33:23,604 INFO L226 Difference]: Without dead ends: 170 [2020-10-27 14:33:23,605 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 89 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=115, Invalid=1691, Unknown=0, NotChecked=0, Total=1806 [2020-10-27 14:33:23,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2020-10-27 14:33:23,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 168. [2020-10-27 14:33:23,621 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 168 states. [2020-10-27 14:33:23,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 183 transitions. [2020-10-27 14:33:23,622 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 183 transitions. Word has length 153 [2020-10-27 14:33:23,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:23,622 INFO L481 AbstractCegarLoop]: Abstraction has 168 states and 183 transitions. [2020-10-27 14:33:23,622 INFO L482 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-10-27 14:33:23,623 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 183 transitions. [2020-10-27 14:33:23,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-27 14:33:23,624 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:23,624 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:23,624 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 14:33:23,624 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:23,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:23,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1851005996, now seen corresponding path program 30 times [2020-10-27 14:33:23,625 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:23,625 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1269887244] [2020-10-27 14:33:23,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:23,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:23,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:24,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:28,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:28,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 194 [2020-10-27 14:33:28,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 14:33:28,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 14:33:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:28,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-27 14:33:28,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:29,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:29,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:29,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:29,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2020-10-27 14:33:29,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:29,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:33:29,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:29,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:33:29,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 14:33:29,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:29,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:33:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:29,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:33:29,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,549 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:29,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,550 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:33:29,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:29,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 14:33:29,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:29,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 14:33:29,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:29,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 14:33:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:29,572 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 14:33:29,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:29,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:29,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:29,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:29,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:29,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:29,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:29,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:33:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:29,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:33:29,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:29,627 INFO L134 CoverageAnalysis]: Checked inductivity of 814 backedges. 33 proven. 506 refuted. 0 times theorem prover too weak. 275 trivial. 0 not checked. [2020-10-27 14:33:29,627 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1269887244] [2020-10-27 14:33:29,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:29,628 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30] total 30 [2020-10-27 14:33:29,628 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513848080] [2020-10-27 14:33:29,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 30 states [2020-10-27 14:33:29,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:29,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2020-10-27 14:33:29,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=812, Unknown=0, NotChecked=0, Total=870 [2020-10-27 14:33:29,629 INFO L87 Difference]: Start difference. First operand 168 states and 183 transitions. Second operand 30 states. [2020-10-27 14:33:34,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:34,645 INFO L93 Difference]: Finished difference Result 266 states and 298 transitions. [2020-10-27 14:33:34,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2020-10-27 14:33:34,646 INFO L78 Accepts]: Start accepts. Automaton has 30 states. Word has length 162 [2020-10-27 14:33:34,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:34,649 INFO L225 Difference]: With dead ends: 266 [2020-10-27 14:33:34,649 INFO L226 Difference]: Without dead ends: 193 [2020-10-27 14:33:34,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=199, Invalid=2771, Unknown=0, NotChecked=0, Total=2970 [2020-10-27 14:33:34,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2020-10-27 14:33:34,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 171. [2020-10-27 14:33:34,671 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 171 states. [2020-10-27 14:33:34,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 187 transitions. [2020-10-27 14:33:34,673 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 187 transitions. Word has length 162 [2020-10-27 14:33:34,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:34,674 INFO L481 AbstractCegarLoop]: Abstraction has 171 states and 187 transitions. [2020-10-27 14:33:34,674 INFO L482 AbstractCegarLoop]: Interpolant automaton has 30 states. [2020-10-27 14:33:34,674 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 187 transitions. [2020-10-27 14:33:34,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2020-10-27 14:33:34,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:34,675 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:34,675 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 14:33:34,675 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:34,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:34,676 INFO L82 PathProgramCache]: Analyzing trace with hash 571535815, now seen corresponding path program 31 times [2020-10-27 14:33:34,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:34,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1603019713] [2020-10-27 14:33:34,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:34,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:35,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 197 [2020-10-27 14:33:39,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:39,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 14:33:39,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 14:33:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:39,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:33:39,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:39,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:39,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:39,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2020-10-27 14:33:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:39,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,876 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2020-10-27 14:33:39,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:39,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 14:33:39,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:39,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2020-10-27 14:33:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:39,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-10-27 14:33:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:39,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2020-10-27 14:33:39,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:39,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2020-10-27 14:33:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:39,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2020-10-27 14:33:39,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:39,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-27 14:33:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,900 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:39,901 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,901 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2020-10-27 14:33:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:39,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2020-10-27 14:33:39,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:39,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:39,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:39,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:39,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:39,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:39,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:39,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:39,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 850 backedges. 22 proven. 55 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 14:33:39,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1603019713] [2020-10-27 14:33:39,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:39,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 14:33:39,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1068297385] [2020-10-27 14:33:39,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 14:33:39,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:39,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 14:33:39,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:33:39,922 INFO L87 Difference]: Start difference. First operand 171 states and 187 transitions. Second operand 14 states. [2020-10-27 14:33:40,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:40,041 INFO L93 Difference]: Finished difference Result 326 states and 358 transitions. [2020-10-27 14:33:40,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 14:33:40,041 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 165 [2020-10-27 14:33:40,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:40,043 INFO L225 Difference]: With dead ends: 326 [2020-10-27 14:33:40,043 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 14:33:40,044 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=102, Unknown=0, NotChecked=0, Total=182 [2020-10-27 14:33:40,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 14:33:40,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2020-10-27 14:33:40,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 172 states. [2020-10-27 14:33:40,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 188 transitions. [2020-10-27 14:33:40,062 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 188 transitions. Word has length 165 [2020-10-27 14:33:40,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:40,062 INFO L481 AbstractCegarLoop]: Abstraction has 172 states and 188 transitions. [2020-10-27 14:33:40,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 14:33:40,063 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 188 transitions. [2020-10-27 14:33:40,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2020-10-27 14:33:40,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:40,064 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:40,064 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 14:33:40,064 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:40,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:40,064 INFO L82 PathProgramCache]: Analyzing trace with hash -1604871455, now seen corresponding path program 32 times [2020-10-27 14:33:40,065 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:40,065 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1418896174] [2020-10-27 14:33:40,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:40,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:40,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:40,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 198 [2020-10-27 14:33:45,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:45,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-27 14:33:45,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 14:33:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:45,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 14:33:45,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:45,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:45,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:45,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:45,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2020-10-27 14:33:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2020-10-27 14:33:45,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:45,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-10-27 14:33:45,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:45,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2020-10-27 14:33:45,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 14:33:45,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2020-10-27 14:33:45,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2020-10-27 14:33:45,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-27 14:33:45,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:45,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,318 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 14:33:45,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2020-10-27 14:33:45,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,324 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,324 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,324 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,324 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:45,324 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,325 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,325 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2020-10-27 14:33:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:45,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:45,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:45,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:45,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:45,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:45,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 861 backedges. 22 proven. 66 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 14:33:45,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1418896174] [2020-10-27 14:33:45,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:45,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 14:33:45,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936348897] [2020-10-27 14:33:45,347 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 14:33:45,347 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:45,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 14:33:45,348 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:33:45,348 INFO L87 Difference]: Start difference. First operand 172 states and 188 transitions. Second operand 15 states. [2020-10-27 14:33:45,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:45,506 INFO L93 Difference]: Finished difference Result 327 states and 359 transitions. [2020-10-27 14:33:45,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 14:33:45,507 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 166 [2020-10-27 14:33:45,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:45,509 INFO L225 Difference]: With dead ends: 327 [2020-10-27 14:33:45,509 INFO L226 Difference]: Without dead ends: 173 [2020-10-27 14:33:45,510 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=117, Unknown=0, NotChecked=0, Total=210 [2020-10-27 14:33:45,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2020-10-27 14:33:45,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2020-10-27 14:33:45,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-27 14:33:45,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 189 transitions. [2020-10-27 14:33:45,525 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 189 transitions. Word has length 166 [2020-10-27 14:33:45,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:45,525 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 189 transitions. [2020-10-27 14:33:45,525 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 14:33:45,525 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 189 transitions. [2020-10-27 14:33:45,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 14:33:45,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:45,527 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:45,527 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 14:33:45,527 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:45,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:45,527 INFO L82 PathProgramCache]: Analyzing trace with hash -354020089, now seen corresponding path program 33 times [2020-10-27 14:33:45,527 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:45,528 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616693165] [2020-10-27 14:33:45,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:45,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:45,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:46,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 199 [2020-10-27 14:33:50,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 14:33:50,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 14:33:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:50,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 14:33:50,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:50,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:50,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:33:50,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:50,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2020-10-27 14:33:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:50,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-10-27 14:33:50,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:50,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 14:33:50,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:50,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 14:33:50,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:50,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 14:33:50,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:50,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2020-10-27 14:33:50,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:50,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-10-27 14:33:50,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:50,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2020-10-27 14:33:50,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:50,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 14:33:50,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:50,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,821 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2020-10-27 14:33:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:50,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2020-10-27 14:33:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:50,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:50,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:50,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:50,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:50,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:33:50,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:50,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:50,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:50,842 INFO L134 CoverageAnalysis]: Checked inductivity of 873 backedges. 22 proven. 78 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 14:33:50,842 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616693165] [2020-10-27 14:33:50,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:50,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 14:33:50,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272462891] [2020-10-27 14:33:50,843 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 14:33:50,843 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:50,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 14:33:50,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:33:50,844 INFO L87 Difference]: Start difference. First operand 173 states and 189 transitions. Second operand 16 states. [2020-10-27 14:33:50,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:50,941 INFO L93 Difference]: Finished difference Result 328 states and 360 transitions. [2020-10-27 14:33:50,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 14:33:50,942 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 167 [2020-10-27 14:33:50,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:50,944 INFO L225 Difference]: With dead ends: 328 [2020-10-27 14:33:50,944 INFO L226 Difference]: Without dead ends: 174 [2020-10-27 14:33:50,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=107, Invalid=133, Unknown=0, NotChecked=0, Total=240 [2020-10-27 14:33:50,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-27 14:33:50,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2020-10-27 14:33:50,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 174 states. [2020-10-27 14:33:50,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 190 transitions. [2020-10-27 14:33:50,963 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 190 transitions. Word has length 167 [2020-10-27 14:33:50,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:50,963 INFO L481 AbstractCegarLoop]: Abstraction has 174 states and 190 transitions. [2020-10-27 14:33:50,963 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 14:33:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 190 transitions. [2020-10-27 14:33:50,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2020-10-27 14:33:50,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:50,965 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:50,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 14:33:50,965 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:50,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:50,965 INFO L82 PathProgramCache]: Analyzing trace with hash -232333407, now seen corresponding path program 34 times [2020-10-27 14:33:50,965 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:50,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2080628626] [2020-10-27 14:33:50,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:51,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:51,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-10-27 14:33:56,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:33:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-10-27 14:33:56,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 14:33:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:33:56,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 14:33:56,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:33:56,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:33:56,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:33:56,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:33:56,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-10-27 14:33:56,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2020-10-27 14:33:56,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 14:33:56,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2020-10-27 14:33:56,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 14:33:56,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 14:33:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 14:33:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 14:33:56,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,269 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2020-10-27 14:33:56,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2020-10-27 14:33:56,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-27 14:33:56,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:56,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:33:56,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:33:56,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:33:56,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:33:56,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:33:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:33:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:33:56,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:33:56,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:33:56,291 INFO L134 CoverageAnalysis]: Checked inductivity of 886 backedges. 22 proven. 91 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 14:33:56,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2080628626] [2020-10-27 14:33:56,291 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:33:56,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 14:33:56,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101135497] [2020-10-27 14:33:56,292 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 14:33:56,292 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:33:56,292 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 14:33:56,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:33:56,293 INFO L87 Difference]: Start difference. First operand 174 states and 190 transitions. Second operand 17 states. [2020-10-27 14:33:56,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:33:56,449 INFO L93 Difference]: Finished difference Result 329 states and 361 transitions. [2020-10-27 14:33:56,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 14:33:56,450 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 168 [2020-10-27 14:33:56,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:33:56,451 INFO L225 Difference]: With dead ends: 329 [2020-10-27 14:33:56,451 INFO L226 Difference]: Without dead ends: 175 [2020-10-27 14:33:56,452 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=122, Invalid=150, Unknown=0, NotChecked=0, Total=272 [2020-10-27 14:33:56,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-10-27 14:33:56,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2020-10-27 14:33:56,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 175 states. [2020-10-27 14:33:56,469 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 191 transitions. [2020-10-27 14:33:56,469 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 191 transitions. Word has length 168 [2020-10-27 14:33:56,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:33:56,469 INFO L481 AbstractCegarLoop]: Abstraction has 175 states and 191 transitions. [2020-10-27 14:33:56,469 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 14:33:56,469 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 191 transitions. [2020-10-27 14:33:56,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-10-27 14:33:56,470 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:33:56,470 INFO L422 BasicCegarLoop]: trace histogram [14, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:33:56,471 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 14:33:56,471 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:33:56,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:33:56,471 INFO L82 PathProgramCache]: Analyzing trace with hash -755013561, now seen corresponding path program 35 times [2020-10-27 14:33:56,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:33:56,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1091272950] [2020-10-27 14:33:56,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:33:56,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:33:56,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:33:57,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-27 14:34:01,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 14:34:01,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 14:34:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:01,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 14:34:01,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:01,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:01,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:01,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-10-27 14:34:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-10-27 14:34:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:01,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 14:34:01,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 14:34:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-27 14:34:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2020-10-27 14:34:01,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 14:34:01,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2020-10-27 14:34:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2020-10-27 14:34:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:01,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2020-10-27 14:34:01,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:01,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2020-10-27 14:34:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:01,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:01,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:01,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:01,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:01,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:01,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:01,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:01,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:01,824 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 22 proven. 105 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 14:34:01,824 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1091272950] [2020-10-27 14:34:01,824 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:01,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 14:34:01,825 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297556125] [2020-10-27 14:34:01,825 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 14:34:01,825 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:01,825 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 14:34:01,826 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:34:01,826 INFO L87 Difference]: Start difference. First operand 175 states and 191 transitions. Second operand 18 states. [2020-10-27 14:34:01,990 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:01,990 INFO L93 Difference]: Finished difference Result 330 states and 362 transitions. [2020-10-27 14:34:01,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 14:34:01,991 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 169 [2020-10-27 14:34:01,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:01,992 INFO L225 Difference]: With dead ends: 330 [2020-10-27 14:34:01,992 INFO L226 Difference]: Without dead ends: 176 [2020-10-27 14:34:01,993 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=138, Invalid=168, Unknown=0, NotChecked=0, Total=306 [2020-10-27 14:34:01,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-10-27 14:34:02,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2020-10-27 14:34:02,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-10-27 14:34:02,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 192 transitions. [2020-10-27 14:34:02,011 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 192 transitions. Word has length 169 [2020-10-27 14:34:02,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:02,011 INFO L481 AbstractCegarLoop]: Abstraction has 176 states and 192 transitions. [2020-10-27 14:34:02,011 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 14:34:02,011 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 192 transitions. [2020-10-27 14:34:02,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-27 14:34:02,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:02,013 INFO L422 BasicCegarLoop]: trace histogram [15, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:02,013 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2020-10-27 14:34:02,013 INFO L429 AbstractCegarLoop]: === Iteration 40 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:02,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:02,013 INFO L82 PathProgramCache]: Analyzing trace with hash 221770849, now seen corresponding path program 36 times [2020-10-27 14:34:02,014 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:02,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1216757277] [2020-10-27 14:34:02,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:02,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:02,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 202 [2020-10-27 14:34:07,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:07,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5029 [2020-10-27 14:34:07,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 14:34:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:07,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 14:34:07,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:07,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:07,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:07,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:07,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-10-27 14:34:07,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:07,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-10-27 14:34:07,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:07,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 14:34:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:07,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2020-10-27 14:34:07,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:07,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-27 14:34:07,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:07,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-10-27 14:34:07,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:07,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2020-10-27 14:34:07,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:07,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2020-10-27 14:34:07,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:07,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2020-10-27 14:34:07,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:07,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2020-10-27 14:34:07,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:07,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-27 14:34:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:07,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:07,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:07,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:07,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:07,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:07,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:07,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:07,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:07,406 INFO L134 CoverageAnalysis]: Checked inductivity of 915 backedges. 22 proven. 120 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 14:34:07,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1216757277] [2020-10-27 14:34:07,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:07,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 14:34:07,406 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73313521] [2020-10-27 14:34:07,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 14:34:07,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:07,407 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 14:34:07,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:34:07,407 INFO L87 Difference]: Start difference. First operand 176 states and 192 transitions. Second operand 19 states. [2020-10-27 14:34:07,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:07,578 INFO L93 Difference]: Finished difference Result 331 states and 363 transitions. [2020-10-27 14:34:07,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 14:34:07,578 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 170 [2020-10-27 14:34:07,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:07,580 INFO L225 Difference]: With dead ends: 331 [2020-10-27 14:34:07,580 INFO L226 Difference]: Without dead ends: 177 [2020-10-27 14:34:07,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=155, Invalid=187, Unknown=0, NotChecked=0, Total=342 [2020-10-27 14:34:07,581 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-10-27 14:34:07,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-10-27 14:34:07,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-10-27 14:34:07,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 193 transitions. [2020-10-27 14:34:07,596 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 193 transitions. Word has length 170 [2020-10-27 14:34:07,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:07,596 INFO L481 AbstractCegarLoop]: Abstraction has 177 states and 193 transitions. [2020-10-27 14:34:07,596 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 14:34:07,596 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 193 transitions. [2020-10-27 14:34:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2020-10-27 14:34:07,597 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:07,598 INFO L422 BasicCegarLoop]: trace histogram [16, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:07,598 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2020-10-27 14:34:07,598 INFO L429 AbstractCegarLoop]: === Iteration 41 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:07,598 INFO L82 PathProgramCache]: Analyzing trace with hash 437316487, now seen corresponding path program 37 times [2020-10-27 14:34:07,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:07,598 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004726911] [2020-10-27 14:34:07,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:07,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:08,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 203 [2020-10-27 14:34:12,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 14:34:12,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 14:34:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:12,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 14:34:12,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:12,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:12,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:12,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2020-10-27 14:34:12,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:12,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2020-10-27 14:34:12,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:12,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-10-27 14:34:12,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:12,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,942 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2020-10-27 14:34:12,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:12,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2020-10-27 14:34:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:12,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,947 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2020-10-27 14:34:12,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:12,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2020-10-27 14:34:12,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:12,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 14:34:12,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:12,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2020-10-27 14:34:12,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:12,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2020-10-27 14:34:12,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:12,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 14:34:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:12,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:12,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:12,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:12,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:12,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:12,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:12,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:12,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:12,982 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 22 proven. 136 refuted. 0 times theorem prover too weak. 773 trivial. 0 not checked. [2020-10-27 14:34:12,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004726911] [2020-10-27 14:34:12,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:12,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 14:34:12,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581847632] [2020-10-27 14:34:12,983 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 14:34:12,983 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:12,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 14:34:12,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:34:12,984 INFO L87 Difference]: Start difference. First operand 177 states and 193 transitions. Second operand 20 states. [2020-10-27 14:34:13,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:13,154 INFO L93 Difference]: Finished difference Result 332 states and 364 transitions. [2020-10-27 14:34:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 14:34:13,155 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 171 [2020-10-27 14:34:13,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:13,157 INFO L225 Difference]: With dead ends: 332 [2020-10-27 14:34:13,157 INFO L226 Difference]: Without dead ends: 178 [2020-10-27 14:34:13,158 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=173, Invalid=207, Unknown=0, NotChecked=0, Total=380 [2020-10-27 14:34:13,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 178 states. [2020-10-27 14:34:13,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 178 to 178. [2020-10-27 14:34:13,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 178 states. [2020-10-27 14:34:13,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 178 states to 178 states and 194 transitions. [2020-10-27 14:34:13,175 INFO L78 Accepts]: Start accepts. Automaton has 178 states and 194 transitions. Word has length 171 [2020-10-27 14:34:13,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:13,176 INFO L481 AbstractCegarLoop]: Abstraction has 178 states and 194 transitions. [2020-10-27 14:34:13,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 14:34:13,176 INFO L276 IsEmpty]: Start isEmpty. Operand 178 states and 194 transitions. [2020-10-27 14:34:13,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2020-10-27 14:34:13,177 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:13,177 INFO L422 BasicCegarLoop]: trace histogram [17, 13, 13, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:13,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2020-10-27 14:34:13,177 INFO L429 AbstractCegarLoop]: === Iteration 42 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:13,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:13,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1470703327, now seen corresponding path program 38 times [2020-10-27 14:34:13,178 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:13,178 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [220867272] [2020-10-27 14:34:13,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:13,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:13,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:14,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:18,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:18,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-10-27 14:34:18,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:18,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-27 14:34:18,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 14:34:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:18,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 14:34:18,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:20,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 14:34:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:34:20,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:20,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:34:20,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:20,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:34:20,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:20,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:34:20,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:34:20,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:34:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,643 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:34:20,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 14:34:20,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:34:20,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,652 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,652 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:34:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 14:34:20,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 14:34:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:20,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,688 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 14:34:20,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:34:20,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 14:34:20,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-27 14:34:20,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 14:34:20,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 14:34:20,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:20,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:20,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:20,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:20,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:20,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:34:20,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:20,856 INFO L134 CoverageAnalysis]: Checked inductivity of 948 backedges. 22 proven. 553 refuted. 0 times theorem prover too weak. 373 trivial. 0 not checked. [2020-10-27 14:34:20,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [220867272] [2020-10-27 14:34:20,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:20,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-10-27 14:34:20,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106885994] [2020-10-27 14:34:20,857 INFO L461 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-10-27 14:34:20,857 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:20,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-10-27 14:34:20,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=871, Unknown=0, NotChecked=0, Total=930 [2020-10-27 14:34:20,858 INFO L87 Difference]: Start difference. First operand 178 states and 194 transitions. Second operand 31 states. [2020-10-27 14:34:25,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:25,555 INFO L93 Difference]: Finished difference Result 193 states and 209 transitions. [2020-10-27 14:34:25,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2020-10-27 14:34:25,556 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 172 [2020-10-27 14:34:25,556 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:25,558 INFO L225 Difference]: With dead ends: 193 [2020-10-27 14:34:25,558 INFO L226 Difference]: Without dead ends: 189 [2020-10-27 14:34:25,559 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=128, Invalid=2034, Unknown=0, NotChecked=0, Total=2162 [2020-10-27 14:34:25,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2020-10-27 14:34:25,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 187. [2020-10-27 14:34:25,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-10-27 14:34:25,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 203 transitions. [2020-10-27 14:34:25,578 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 203 transitions. Word has length 172 [2020-10-27 14:34:25,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:25,579 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 203 transitions. [2020-10-27 14:34:25,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-10-27 14:34:25,579 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 203 transitions. [2020-10-27 14:34:25,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2020-10-27 14:34:25,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:25,580 INFO L422 BasicCegarLoop]: trace histogram [17, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:25,580 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2020-10-27 14:34:25,580 INFO L429 AbstractCegarLoop]: === Iteration 43 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:25,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:25,581 INFO L82 PathProgramCache]: Analyzing trace with hash -1903849700, now seen corresponding path program 39 times [2020-10-27 14:34:25,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:25,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2084594623] [2020-10-27 14:34:25,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:25,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:26,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:30,631 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:30,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 215 [2020-10-27 14:34:30,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:34:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 14:34:30,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 14:34:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 14:34:30,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 14:34:30,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:30,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:34:30,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:30,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:30,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:30,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:34:30,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 14:34:30,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:34:30,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:30,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:30,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2020-10-27 14:34:30,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:30,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:30,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:30,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:30,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:30,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:30,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:30,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:30,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2020-10-27 14:34:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:30,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:30,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:30,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:30,992 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:30,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:30,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:30,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:30,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:30,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2020-10-27 14:34:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:30,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:30,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:30,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:30,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:30,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:30,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:30,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-10-27 14:34:30,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:30,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:30,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:30,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:30,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:30,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:31,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:31,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:31,000 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:31,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-27 14:34:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:31,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:31,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:31,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:31,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:31,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:31,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:31,003 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:31,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:31,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:31,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-10-27 14:34:31,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:31,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:31,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:31,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:31,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:31,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-27 14:34:31,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:31,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:31,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:31,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:31,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-27 14:34:31,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:31,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:31,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:31,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:31,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:31,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:31,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:31,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:31,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2020-10-27 14:34:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:31,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:31,014 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:31,014 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:31,014 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:31,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:31,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:31,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:31,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 14:34:31,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:31,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:31,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:31,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:31,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:31,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:31,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:31,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:31,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:31,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:31,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:31,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2020-10-27 14:34:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:31,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:31,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:31,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:31,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:31,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:31,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:31,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:31,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:31,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:31,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:31,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-27 14:34:31,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:31,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:31,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:31,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:31,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:31,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:31,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:31,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:31,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:31,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-27 14:34:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:31,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:31,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:34:31,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:34:31,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:34:31,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 14:34:31,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:34:31,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:34:31,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-27 14:34:31,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:34:31,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:34:31,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1053 backedges. 24 proven. 153 refuted. 0 times theorem prover too weak. 876 trivial. 0 not checked. [2020-10-27 14:34:31,054 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2084594623] [2020-10-27 14:34:31,054 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 14:34:31,054 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 14:34:31,054 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83902665] [2020-10-27 14:34:31,055 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 14:34:31,055 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:34:31,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 14:34:31,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:34:31,056 INFO L87 Difference]: Start difference. First operand 187 states and 203 transitions. Second operand 21 states. [2020-10-27 14:34:31,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:34:31,284 INFO L93 Difference]: Finished difference Result 351 states and 383 transitions. [2020-10-27 14:34:31,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 14:34:31,285 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 181 [2020-10-27 14:34:31,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:34:31,286 INFO L225 Difference]: With dead ends: 351 [2020-10-27 14:34:31,287 INFO L226 Difference]: Without dead ends: 188 [2020-10-27 14:34:31,288 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=192, Invalid=228, Unknown=0, NotChecked=0, Total=420 [2020-10-27 14:34:31,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2020-10-27 14:34:31,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 188. [2020-10-27 14:34:31,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-10-27 14:34:31,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 204 transitions. [2020-10-27 14:34:31,309 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 204 transitions. Word has length 181 [2020-10-27 14:34:31,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:34:31,312 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 204 transitions. [2020-10-27 14:34:31,312 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 14:34:31,312 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 204 transitions. [2020-10-27 14:34:31,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2020-10-27 14:34:31,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:34:31,313 INFO L422 BasicCegarLoop]: trace histogram [18, 13, 13, 13, 13, 13, 13, 13, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 14:34:31,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2020-10-27 14:34:31,314 INFO L429 AbstractCegarLoop]: === Iteration 44 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:34:31,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:34:31,314 INFO L82 PathProgramCache]: Analyzing trace with hash 362464310, now seen corresponding path program 40 times [2020-10-27 14:34:31,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:34:31,314 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [991488410] [2020-10-27 14:34:31,314 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:34:31,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:34:31,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:34:32,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking...