/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 13:29:35,665 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 13:29:35,667 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 13:29:35,704 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 13:29:35,704 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 13:29:35,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 13:29:35,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 13:29:35,710 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 13:29:35,712 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 13:29:35,713 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 13:29:35,715 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 13:29:35,716 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 13:29:35,717 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 13:29:35,718 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 13:29:35,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 13:29:35,720 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 13:29:35,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 13:29:35,723 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 13:29:35,725 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 13:29:35,727 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 13:29:35,729 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 13:29:35,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 13:29:35,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 13:29:35,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 13:29:35,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 13:29:35,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 13:29:35,738 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 13:29:35,739 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 13:29:35,739 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 13:29:35,740 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 13:29:35,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 13:29:35,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 13:29:35,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 13:29:35,743 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 13:29:35,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 13:29:35,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 13:29:35,747 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 13:29:35,747 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 13:29:35,747 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 13:29:35,748 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 13:29:35,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 13:29:35,767 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-28 13:29:35,795 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 13:29:35,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 13:29:35,797 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 13:29:35,797 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 13:29:35,798 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 13:29:35,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 13:29:35,798 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 13:29:35,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 13:29:35,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 13:29:35,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 13:29:35,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 13:29:35,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 13:29:35,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 13:29:35,800 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 13:29:35,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 13:29:35,800 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 13:29:35,800 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 13:29:35,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 13:29:35,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 13:29:35,801 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 13:29:35,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 13:29:35,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:29:35,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 13:29:35,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 13:29:35,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 13:29:35,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 13:29:35,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 13:29:35,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 13:29:35,803 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 13:29:35,803 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 13:29:36,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 13:29:36,223 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 13:29:36,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 13:29:36,229 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 13:29:36,230 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 13:29:36,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label02.c [2020-10-28 13:29:36,323 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cfaf5522/7213316cc6754aaba5914f11f4d9ab65/FLAG6cfaef6fc [2020-10-28 13:29:37,273 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 13:29:37,274 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label02.c [2020-10-28 13:29:37,313 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cfaf5522/7213316cc6754aaba5914f11f4d9ab65/FLAG6cfaef6fc [2020-10-28 13:29:37,813 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8cfaf5522/7213316cc6754aaba5914f11f4d9ab65 [2020-10-28 13:29:37,817 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 13:29:37,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 13:29:37,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 13:29:37,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 13:29:37,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 13:29:37,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:29:37" (1/1) ... [2020-10-28 13:29:37,834 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2cfabece and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:37, skipping insertion in model container [2020-10-28 13:29:37,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 01:29:37" (1/1) ... [2020-10-28 13:29:37,844 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 13:29:37,969 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 13:29:38,975 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:29:38,994 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 13:29:39,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 13:29:39,493 INFO L208 MainTranslator]: Completed translation [2020-10-28 13:29:39,493 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39 WrapperNode [2020-10-28 13:29:39,494 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 13:29:39,495 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 13:29:39,495 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 13:29:39,495 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 13:29:39,511 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39" (1/1) ... [2020-10-28 13:29:39,513 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39" (1/1) ... [2020-10-28 13:29:39,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39" (1/1) ... [2020-10-28 13:29:39,583 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39" (1/1) ... [2020-10-28 13:29:39,668 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39" (1/1) ... [2020-10-28 13:29:39,701 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39" (1/1) ... [2020-10-28 13:29:39,721 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39" (1/1) ... [2020-10-28 13:29:39,742 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 13:29:39,744 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 13:29:39,744 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 13:29:39,745 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 13:29:39,746 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 13:29:39,820 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 13:29:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 13:29:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 13:29:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 13:29:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 13:29:39,821 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 13:29:39,821 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 13:29:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 13:29:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 13:29:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 13:29:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 13:29:39,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 13:29:39,823 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 13:29:39,823 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 13:29:39,823 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 13:29:39,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 13:29:39,823 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 13:29:39,823 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 13:29:39,824 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 13:29:39,824 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 13:29:39,824 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 13:29:49,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 13:29:49,092 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 13:29:49,098 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:29:49 BoogieIcfgContainer [2020-10-28 13:29:49,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 13:29:49,102 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 13:29:49,103 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 13:29:49,107 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 13:29:49,107 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 01:29:37" (1/3) ... [2020-10-28 13:29:49,108 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66317998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:29:49, skipping insertion in model container [2020-10-28 13:29:49,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 01:29:39" (2/3) ... [2020-10-28 13:29:49,109 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66317998 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 01:29:49, skipping insertion in model container [2020-10-28 13:29:49,109 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 01:29:49" (3/3) ... [2020-10-28 13:29:49,111 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label02.c [2020-10-28 13:29:49,128 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 13:29:49,135 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 13:29:49,150 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 13:29:49,200 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 13:29:49,200 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 13:29:49,200 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 13:29:49,201 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 13:29:49,201 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 13:29:49,201 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 13:29:49,201 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 13:29:49,201 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 13:29:49,246 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-28 13:29:49,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-28 13:29:49,260 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:29:49,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:29:49,261 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:29:49,271 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:29:49,271 INFO L82 PathProgramCache]: Analyzing trace with hash 301619986, now seen corresponding path program 1 times [2020-10-28 13:29:49,281 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:29:49,281 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [104679881] [2020-10-28 13:29:49,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:29:49,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:50,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:50,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-28 13:29:50,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:50,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 595 [2020-10-28 13:29:50,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:50,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:29:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:29:50,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-28 13:29:50,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:29:50,366 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 13:29:50,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:29:50,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:29:50,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:29:50,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:29:50,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:29:50,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:29:50,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-28 13:29:50,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:29:50,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:29:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:29:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:29:50,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:29:50,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:29:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:29:50,476 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [104679881] [2020-10-28 13:29:50,479 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:29:50,479 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 13:29:50,480 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415327322] [2020-10-28 13:29:50,487 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 13:29:50,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:29:50,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 13:29:50,509 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 13:29:50,512 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-28 13:30:04,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:04,905 INFO L93 Difference]: Finished difference Result 1694 states and 3092 transitions. [2020-10-28 13:30:04,906 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:30:04,908 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 60 [2020-10-28 13:30:04,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:04,949 INFO L225 Difference]: With dead ends: 1694 [2020-10-28 13:30:04,949 INFO L226 Difference]: Without dead ends: 1010 [2020-10-28 13:30:04,969 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:30:04,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1010 states. [2020-10-28 13:30:05,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1010 to 992. [2020-10-28 13:30:05,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 992 states. [2020-10-28 13:30:05,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 992 states to 992 states and 1527 transitions. [2020-10-28 13:30:05,147 INFO L78 Accepts]: Start accepts. Automaton has 992 states and 1527 transitions. Word has length 60 [2020-10-28 13:30:05,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:05,148 INFO L481 AbstractCegarLoop]: Abstraction has 992 states and 1527 transitions. [2020-10-28 13:30:05,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 13:30:05,148 INFO L276 IsEmpty]: Start isEmpty. Operand 992 states and 1527 transitions. [2020-10-28 13:30:05,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-10-28 13:30:05,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:05,162 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:05,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 13:30:05,163 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:05,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:05,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1413360078, now seen corresponding path program 1 times [2020-10-28 13:30:05,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:05,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839454678] [2020-10-28 13:30:05,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:05,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:05,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:05,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:05,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:07,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:07,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-28 13:30:07,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:07,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2360 [2020-10-28 13:30:07,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:07,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:30:07,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:30:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:30:07,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 13:30:07,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:07,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:07,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:07,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:07,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:07,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-28 13:30:07,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:07,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:07,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:30:07,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:07,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:07,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:07,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-28 13:30:07,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:07,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-28 13:30:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:07,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-28 13:30:07,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:08,095 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 52 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:30:08,095 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839454678] [2020-10-28 13:30:08,096 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 13:30:08,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 13:30:08,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740671948] [2020-10-28 13:30:08,098 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:08,098 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:08,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:08,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:08,099 INFO L87 Difference]: Start difference. First operand 992 states and 1527 transitions. Second operand 7 states. [2020-10-28 13:30:21,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:21,085 INFO L93 Difference]: Finished difference Result 2447 states and 3895 transitions. [2020-10-28 13:30:21,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 13:30:21,092 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 131 [2020-10-28 13:30:21,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:21,106 INFO L225 Difference]: With dead ends: 2447 [2020-10-28 13:30:21,106 INFO L226 Difference]: Without dead ends: 1461 [2020-10-28 13:30:21,110 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:30:21,113 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1461 states. [2020-10-28 13:30:21,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1461 to 1433. [2020-10-28 13:30:21,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1433 states. [2020-10-28 13:30:21,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1433 states to 1433 states and 1859 transitions. [2020-10-28 13:30:21,162 INFO L78 Accepts]: Start accepts. Automaton has 1433 states and 1859 transitions. Word has length 131 [2020-10-28 13:30:21,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:21,162 INFO L481 AbstractCegarLoop]: Abstraction has 1433 states and 1859 transitions. [2020-10-28 13:30:21,163 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:21,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1433 states and 1859 transitions. [2020-10-28 13:30:21,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-28 13:30:21,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:21,169 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:21,170 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 13:30:21,170 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:21,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:21,171 INFO L82 PathProgramCache]: Analyzing trace with hash -712958465, now seen corresponding path program 1 times [2020-10-28 13:30:21,171 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:21,171 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [981071314] [2020-10-28 13:30:21,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:21,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:21,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:22,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:22,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 13:30:22,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:30:22,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1699 [2020-10-28 13:30:22,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:22,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-28 13:30:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 13:30:22,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-10-28 13:30:22,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:23,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:23,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:23,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:23,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:23,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:23,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:23,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 13:30:23,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:23,106 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:23,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 13:30:23,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:23,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:23,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:23,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:23,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:23,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-28 13:30:23,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:23,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-28 13:30:23,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:23,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:23,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-28 13:30:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:23,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-28 13:30:23,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:23,545 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 0 proven. 52 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 13:30:23,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [981071314] [2020-10-28 13:30:23,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:23,546 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:23,546 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329007207] [2020-10-28 13:30:23,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-28 13:30:23,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:23,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-28 13:30:23,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-28 13:30:23,548 INFO L87 Difference]: Start difference. First operand 1433 states and 1859 transitions. Second operand 8 states. [2020-10-28 13:30:28,450 WARN L193 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 67 [2020-10-28 13:30:39,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:39,942 INFO L93 Difference]: Finished difference Result 3413 states and 4670 transitions. [2020-10-28 13:30:39,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:30:39,943 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 134 [2020-10-28 13:30:39,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:39,954 INFO L225 Difference]: With dead ends: 3413 [2020-10-28 13:30:39,955 INFO L226 Difference]: Without dead ends: 1966 [2020-10-28 13:30:39,958 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:30:39,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-10-28 13:30:40,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1919. [2020-10-28 13:30:40,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1919 states. [2020-10-28 13:30:40,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1919 states to 1919 states and 2442 transitions. [2020-10-28 13:30:40,023 INFO L78 Accepts]: Start accepts. Automaton has 1919 states and 2442 transitions. Word has length 134 [2020-10-28 13:30:40,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:40,023 INFO L481 AbstractCegarLoop]: Abstraction has 1919 states and 2442 transitions. [2020-10-28 13:30:40,023 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-28 13:30:40,024 INFO L276 IsEmpty]: Start isEmpty. Operand 1919 states and 2442 transitions. [2020-10-28 13:30:40,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-10-28 13:30:40,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:40,028 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:40,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 13:30:40,028 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:40,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:40,029 INFO L82 PathProgramCache]: Analyzing trace with hash -1038819641, now seen corresponding path program 1 times [2020-10-28 13:30:40,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:40,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [339107940] [2020-10-28 13:30:40,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:40,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:40,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:40,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:41,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:41,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 231 [2020-10-28 13:30:41,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:30:41,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1142 [2020-10-28 13:30:41,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:41,232 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:41,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:30:41,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:30:41,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:41,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:41,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:41,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:41,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:41,365 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:41,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:41,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 13:30:41,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:41,366 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:41,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:41,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:41,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:41,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:41,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:41,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:41,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:41,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:41,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:30:41,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:41,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-28 13:30:41,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:41,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:41,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:41,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:41,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:30:41,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-28 13:30:41,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:30:41,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:41,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:41,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:41,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-28 13:30:41,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:41,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-28 13:30:41,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:41,764 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:41,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:30:41,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-28 13:30:41,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:41,860 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 171 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 13:30:41,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [339107940] [2020-10-28 13:30:41,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:41,861 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:30:41,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385908630] [2020-10-28 13:30:41,875 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:30:41,876 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:41,876 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:30:41,876 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:30:41,877 INFO L87 Difference]: Start difference. First operand 1919 states and 2442 transitions. Second operand 7 states. [2020-10-28 13:30:55,314 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:30:55,315 INFO L93 Difference]: Finished difference Result 4349 states and 5912 transitions. [2020-10-28 13:30:55,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:30:55,316 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 217 [2020-10-28 13:30:55,317 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:30:55,332 INFO L225 Difference]: With dead ends: 4349 [2020-10-28 13:30:55,333 INFO L226 Difference]: Without dead ends: 2871 [2020-10-28 13:30:55,338 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:30:55,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2871 states. [2020-10-28 13:30:55,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2871 to 2846. [2020-10-28 13:30:55,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2846 states. [2020-10-28 13:30:55,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2846 states to 2846 states and 3631 transitions. [2020-10-28 13:30:55,419 INFO L78 Accepts]: Start accepts. Automaton has 2846 states and 3631 transitions. Word has length 217 [2020-10-28 13:30:55,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:30:55,420 INFO L481 AbstractCegarLoop]: Abstraction has 2846 states and 3631 transitions. [2020-10-28 13:30:55,420 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:30:55,420 INFO L276 IsEmpty]: Start isEmpty. Operand 2846 states and 3631 transitions. [2020-10-28 13:30:55,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-10-28 13:30:55,424 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:30:55,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:30:55,425 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 13:30:55,425 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:30:55,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:30:55,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1234777834, now seen corresponding path program 1 times [2020-10-28 13:30:55,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:30:55,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1167434862] [2020-10-28 13:30:55,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:30:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:55,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:55,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:59,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:59,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 236 [2020-10-28 13:30:59,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:30:59,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4007 [2020-10-28 13:30:59,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:59,493 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:30:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 174 [2020-10-28 13:30:59,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-28 13:30:59,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:59,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:30:59,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:59,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:59,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:59,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:30:59,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:59,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:30:59,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:59,645 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:59,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:59,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:30:59,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:30:59,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:59,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:59,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:59,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:30:59,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:59,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-28 13:30:59,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:59,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:30:59,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:59,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:30:59,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-28 13:30:59,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:30:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:30:59,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:30:59,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:30:59,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 13:30:59,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:30:59,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-28 13:30:59,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:30:59,884 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:30:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:30:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:30:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 13:30:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:30:59,955 INFO L134 CoverageAnalysis]: Checked inductivity of 179 backedges. 105 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-28 13:30:59,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1167434862] [2020-10-28 13:30:59,955 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:30:59,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:30:59,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858521679] [2020-10-28 13:30:59,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:30:59,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:30:59,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:30:59,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:30:59,958 INFO L87 Difference]: Start difference. First operand 2846 states and 3631 transitions. Second operand 5 states. [2020-10-28 13:31:14,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:14,453 INFO L93 Difference]: Finished difference Result 6676 states and 8893 transitions. [2020-10-28 13:31:14,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:31:14,466 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 222 [2020-10-28 13:31:14,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:14,488 INFO L225 Difference]: With dead ends: 6676 [2020-10-28 13:31:14,489 INFO L226 Difference]: Without dead ends: 4271 [2020-10-28 13:31:14,495 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:31:14,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4271 states. [2020-10-28 13:31:14,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4271 to 4246. [2020-10-28 13:31:14,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4246 states. [2020-10-28 13:31:14,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4246 states to 4246 states and 5599 transitions. [2020-10-28 13:31:14,612 INFO L78 Accepts]: Start accepts. Automaton has 4246 states and 5599 transitions. Word has length 222 [2020-10-28 13:31:14,613 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:14,613 INFO L481 AbstractCegarLoop]: Abstraction has 4246 states and 5599 transitions. [2020-10-28 13:31:14,613 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:31:14,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4246 states and 5599 transitions. [2020-10-28 13:31:14,617 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 234 [2020-10-28 13:31:14,617 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:14,618 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:14,618 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 13:31:14,618 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:14,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:14,619 INFO L82 PathProgramCache]: Analyzing trace with hash -650886624, now seen corresponding path program 1 times [2020-10-28 13:31:14,619 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:14,619 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481922750] [2020-10-28 13:31:14,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:14,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:14,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:15,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:15,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:19,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:19,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 247 [2020-10-28 13:31:19,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:31:19,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 13:31:19,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:19,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:31:19,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 146 [2020-10-28 13:31:19,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:19,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:19,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:19,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:19,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:19,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:19,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:19,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:31:19,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:19,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:19,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:19,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:19,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:19,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:20,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:20,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:31:20,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:20,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-28 13:31:20,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:20,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:20,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:31:20,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:20,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:31:20,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:20,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:20,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:20,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:20,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:31:20,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:31:20,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-28 13:31:20,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:20,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:20,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:20,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:31:20,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:20,405 INFO L134 CoverageAnalysis]: Checked inductivity of 190 backedges. 102 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-28 13:31:20,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481922750] [2020-10-28 13:31:20,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:20,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 13:31:20,408 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748558075] [2020-10-28 13:31:20,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 13:31:20,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:20,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 13:31:20,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 13:31:20,409 INFO L87 Difference]: Start difference. First operand 4246 states and 5599 transitions. Second operand 5 states. [2020-10-28 13:31:31,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:31:31,867 INFO L93 Difference]: Finished difference Result 8059 states and 10767 transitions. [2020-10-28 13:31:31,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 13:31:31,870 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 233 [2020-10-28 13:31:31,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:31:31,890 INFO L225 Difference]: With dead ends: 8059 [2020-10-28 13:31:31,890 INFO L226 Difference]: Without dead ends: 4254 [2020-10-28 13:31:31,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 13:31:31,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4254 states. [2020-10-28 13:31:32,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4254 to 4236. [2020-10-28 13:31:32,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4236 states. [2020-10-28 13:31:32,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4236 states to 4236 states and 5568 transitions. [2020-10-28 13:31:32,015 INFO L78 Accepts]: Start accepts. Automaton has 4236 states and 5568 transitions. Word has length 233 [2020-10-28 13:31:32,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:31:32,016 INFO L481 AbstractCegarLoop]: Abstraction has 4236 states and 5568 transitions. [2020-10-28 13:31:32,016 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 13:31:32,016 INFO L276 IsEmpty]: Start isEmpty. Operand 4236 states and 5568 transitions. [2020-10-28 13:31:32,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 302 [2020-10-28 13:31:32,025 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:31:32,026 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:31:32,026 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 13:31:32,026 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:31:32,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:31:32,027 INFO L82 PathProgramCache]: Analyzing trace with hash -1149113472, now seen corresponding path program 1 times [2020-10-28 13:31:32,027 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:31:32,027 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [604460886] [2020-10-28 13:31:32,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:31:32,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:32,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:32,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:37,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-10-28 13:31:37,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 13:31:37,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-28 13:31:37,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:37,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 13:31:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-28 13:31:37,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-10-28 13:31:37,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:37,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:31:37,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:37,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:37,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:31:37,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:37,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 13:31:37,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:37,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:31:37,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:37,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:31:37,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:37,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:31:37,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:37,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:37,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:31:37,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:37,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-28 13:31:37,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:37,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:31:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:31:37,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-28 13:31:37,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:31:37,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:31:37,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:37,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:37,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 13:31:37,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-10-28 13:31:37,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:37,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:31:37,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:37,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-28 13:31:37,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:31:37,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:31:37,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:31:37,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:31:37,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:31:37,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-28 13:31:37,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:31:37,979 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:31:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:31:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:31:37,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:31:37,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:31:38,189 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 304 proven. 6 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-28 13:31:38,190 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [604460886] [2020-10-28 13:31:38,190 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:31:38,190 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:31:38,190 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [341928289] [2020-10-28 13:31:38,191 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:31:38,191 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:31:38,192 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:31:38,192 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:31:38,192 INFO L87 Difference]: Start difference. First operand 4236 states and 5568 transitions. Second operand 7 states. [2020-10-28 13:32:04,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:04,723 INFO L93 Difference]: Finished difference Result 11981 states and 16592 transitions. [2020-10-28 13:32:04,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:32:04,731 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 301 [2020-10-28 13:32:04,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:04,768 INFO L225 Difference]: With dead ends: 11981 [2020-10-28 13:32:04,769 INFO L226 Difference]: Without dead ends: 7716 [2020-10-28 13:32:04,780 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:32:04,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7716 states. [2020-10-28 13:32:04,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7716 to 7568. [2020-10-28 13:32:04,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7568 states. [2020-10-28 13:32:04,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7568 states to 7568 states and 9619 transitions. [2020-10-28 13:32:04,985 INFO L78 Accepts]: Start accepts. Automaton has 7568 states and 9619 transitions. Word has length 301 [2020-10-28 13:32:04,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:04,986 INFO L481 AbstractCegarLoop]: Abstraction has 7568 states and 9619 transitions. [2020-10-28 13:32:04,986 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:04,987 INFO L276 IsEmpty]: Start isEmpty. Operand 7568 states and 9619 transitions. [2020-10-28 13:32:04,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 310 [2020-10-28 13:32:04,994 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:04,994 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:04,995 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 13:32:04,995 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:04,995 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:04,995 INFO L82 PathProgramCache]: Analyzing trace with hash 1503295977, now seen corresponding path program 1 times [2020-10-28 13:32:04,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:04,996 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1713616371] [2020-10-28 13:32:04,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:05,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:05,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:05,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:06,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:06,905 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 325 [2020-10-28 13:32:06,905 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:32:06,905 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1834 [2020-10-28 13:32:06,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:06,905 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:06,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:32:06,906 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 13:32:06,906 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:07,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:07,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:32:07,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:32:07,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-28 13:32:07,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:07,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:32:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:32:07,257 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-28 13:32:07,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:07,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:32:07,258 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:32:07,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:07,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:07,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:07,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-28 13:32:07,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:07,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-28 13:32:07,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:07,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-28 13:32:07,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 307 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:32:07,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1713616371] [2020-10-28 13:32:07,601 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:07,601 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:07,601 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480907265] [2020-10-28 13:32:07,602 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:07,602 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:07,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:07,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:07,603 INFO L87 Difference]: Start difference. First operand 7568 states and 9619 transitions. Second operand 7 states. [2020-10-28 13:32:27,483 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:27,484 INFO L93 Difference]: Finished difference Result 20835 states and 27588 transitions. [2020-10-28 13:32:27,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:32:27,486 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 309 [2020-10-28 13:32:27,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:27,549 INFO L225 Difference]: With dead ends: 20835 [2020-10-28 13:32:27,549 INFO L226 Difference]: Without dead ends: 13228 [2020-10-28 13:32:27,571 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:32:27,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13228 states. [2020-10-28 13:32:27,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13228 to 12191. [2020-10-28 13:32:27,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12191 states. [2020-10-28 13:32:27,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12191 states to 12191 states and 15033 transitions. [2020-10-28 13:32:27,961 INFO L78 Accepts]: Start accepts. Automaton has 12191 states and 15033 transitions. Word has length 309 [2020-10-28 13:32:27,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:27,962 INFO L481 AbstractCegarLoop]: Abstraction has 12191 states and 15033 transitions. [2020-10-28 13:32:27,962 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:27,962 INFO L276 IsEmpty]: Start isEmpty. Operand 12191 states and 15033 transitions. [2020-10-28 13:32:27,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-28 13:32:27,972 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:27,972 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:27,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 13:32:27,973 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:27,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:27,973 INFO L82 PathProgramCache]: Analyzing trace with hash -329614458, now seen corresponding path program 1 times [2020-10-28 13:32:27,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:27,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1070294633] [2020-10-28 13:32:27,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:28,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:28,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:28,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:31,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:31,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 13:32:31,240 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 13:32:31,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3174 [2020-10-28 13:32:31,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:31,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:31,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:31,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-28 13:32:31,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-28 13:32:31,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:31,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:31,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:31,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:31,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:31,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:31,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-28 13:32:31,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:31,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:31,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:31,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:31,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:31,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:31,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:31,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:31,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:32:31,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:31,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-28 13:32:31,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:31,475 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:31,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:31,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:31,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:31,500 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:32:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:31,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:31,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:31,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 13:32:31,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:31,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-28 13:32:31,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:31,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:31,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 13:32:31,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 13:32:31,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-28 13:32:31,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:31,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:31,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:31,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-10-28 13:32:31,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:31,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-28 13:32:31,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:31,849 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:31,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-28 13:32:31,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 320 proven. 2 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-28 13:32:31,982 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1070294633] [2020-10-28 13:32:31,983 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:31,983 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:31,983 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811956767] [2020-10-28 13:32:31,984 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:31,984 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:31,985 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:31,985 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:31,985 INFO L87 Difference]: Start difference. First operand 12191 states and 15033 transitions. Second operand 7 states. [2020-10-28 13:32:52,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:32:52,212 INFO L93 Difference]: Finished difference Result 29008 states and 36783 transitions. [2020-10-28 13:32:52,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 13:32:52,214 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 323 [2020-10-28 13:32:52,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:32:52,283 INFO L225 Difference]: With dead ends: 29008 [2020-10-28 13:32:52,283 INFO L226 Difference]: Without dead ends: 16821 [2020-10-28 13:32:52,314 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 13:32:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16821 states. [2020-10-28 13:32:52,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16821 to 16278. [2020-10-28 13:32:52,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16278 states. [2020-10-28 13:32:52,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16278 states to 16278 states and 19847 transitions. [2020-10-28 13:32:52,684 INFO L78 Accepts]: Start accepts. Automaton has 16278 states and 19847 transitions. Word has length 323 [2020-10-28 13:32:52,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:32:52,685 INFO L481 AbstractCegarLoop]: Abstraction has 16278 states and 19847 transitions. [2020-10-28 13:32:52,685 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:32:52,685 INFO L276 IsEmpty]: Start isEmpty. Operand 16278 states and 19847 transitions. [2020-10-28 13:32:52,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 337 [2020-10-28 13:32:52,695 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:32:52,695 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:32:52,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 13:32:52,696 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:32:52,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:32:52,696 INFO L82 PathProgramCache]: Analyzing trace with hash 809688541, now seen corresponding path program 1 times [2020-10-28 13:32:52,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:32:52,698 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1574338329] [2020-10-28 13:32:52,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:32:52,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:52,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:53,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:53,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 352 [2020-10-28 13:32:53,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:53,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 755 [2020-10-28 13:32:53,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:53,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:53,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 185 [2020-10-28 13:32:53,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-28 13:32:53,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:53,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 13:32:53,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:53,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:53,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 13:32:53,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-28 13:32:53,745 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:53,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 13:32:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:53,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:53,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:53,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-28 13:32:53,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:53,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 13:32:53,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:53,819 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 13:32:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:53,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 13:32:53,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:53,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-28 13:32:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:53,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:53,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:53,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 13:32:53,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-28 13:32:53,957 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:53,957 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 13:32:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 13:32:53,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-28 13:32:53,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:53,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-28 13:32:54,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:32:54,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:32:54,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 13:32:54,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 13:32:54,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 13:32:54,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-28 13:32:54,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 13:32:54,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 13:32:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 13:32:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 13:32:54,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-28 13:32:54,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 13:32:54,505 INFO L134 CoverageAnalysis]: Checked inductivity of 415 backedges. 328 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-28 13:32:54,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1574338329] [2020-10-28 13:32:54,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 13:32:54,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 13:32:54,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557854734] [2020-10-28 13:32:54,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 13:32:54,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 13:32:54,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 13:32:54,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 13:32:54,507 INFO L87 Difference]: Start difference. First operand 16278 states and 19847 transitions. Second operand 7 states. [2020-10-28 13:33:03,102 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 71 [2020-10-28 13:33:21,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 13:33:21,647 INFO L93 Difference]: Finished difference Result 41606 states and 51841 transitions. [2020-10-28 13:33:21,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-28 13:33:21,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 336 [2020-10-28 13:33:21,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 13:33:21,733 INFO L225 Difference]: With dead ends: 41606 [2020-10-28 13:33:21,733 INFO L226 Difference]: Without dead ends: 24364 [2020-10-28 13:33:21,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-28 13:33:21,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24364 states. [2020-10-28 13:33:22,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24364 to 24243. [2020-10-28 13:33:22,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24243 states. [2020-10-28 13:33:22,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24243 states to 24243 states and 29557 transitions. [2020-10-28 13:33:22,431 INFO L78 Accepts]: Start accepts. Automaton has 24243 states and 29557 transitions. Word has length 336 [2020-10-28 13:33:22,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 13:33:22,432 INFO L481 AbstractCegarLoop]: Abstraction has 24243 states and 29557 transitions. [2020-10-28 13:33:22,432 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 13:33:22,432 INFO L276 IsEmpty]: Start isEmpty. Operand 24243 states and 29557 transitions. [2020-10-28 13:33:22,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-28 13:33:22,446 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 13:33:22,447 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 13:33:22,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-28 13:33:22,448 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 13:33:22,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 13:33:22,450 INFO L82 PathProgramCache]: Analyzing trace with hash 1201249708, now seen corresponding path program 1 times [2020-10-28 13:33:22,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 13:33:22,451 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [666033737] [2020-10-28 13:33:22,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 13:33:22,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 13:33:22,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:22,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 13:33:23,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking...