/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label50.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 07:06:06,994 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 07:06:07,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 07:06:07,062 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 07:06:07,063 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 07:06:07,069 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 07:06:07,072 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 07:06:07,078 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 07:06:07,082 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 07:06:07,089 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 07:06:07,090 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 07:06:07,092 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 07:06:07,093 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 07:06:07,096 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 07:06:07,101 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 07:06:07,104 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 07:06:07,105 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 07:06:07,111 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 07:06:07,121 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 07:06:07,123 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 07:06:07,125 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 07:06:07,126 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 07:06:07,128 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 07:06:07,129 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 07:06:07,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 07:06:07,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 07:06:07,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 07:06:07,134 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 07:06:07,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 07:06:07,136 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 07:06:07,136 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 07:06:07,137 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 07:06:07,138 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 07:06:07,139 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 07:06:07,140 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 07:06:07,140 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 07:06:07,141 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 07:06:07,142 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 07:06:07,142 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 07:06:07,143 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 07:06:07,144 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 07:06:07,145 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 07:06:07,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 07:06:07,173 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 07:06:07,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 07:06:07,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 07:06:07,175 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 07:06:07,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 07:06:07,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 07:06:07,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 07:06:07,176 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 07:06:07,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 07:06:07,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 07:06:07,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 07:06:07,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 07:06:07,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 07:06:07,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 07:06:07,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 07:06:07,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 07:06:07,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 07:06:07,178 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 07:06:07,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 07:06:07,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 07:06:07,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:06:07,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 07:06:07,179 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 07:06:07,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 07:06:07,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 07:06:07,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 07:06:07,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 07:06:07,180 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 07:06:07,180 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 07:06:07,624 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 07:06:07,674 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 07:06:07,677 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 07:06:07,678 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 07:06:07,679 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 07:06:07,680 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label50.c [2020-10-29 07:06:07,757 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/518db08d6/fb50fc95a45349798b26c803a13d432a/FLAG64283f719 [2020-10-29 07:06:08,830 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 07:06:08,831 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label50.c [2020-10-29 07:06:08,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/518db08d6/fb50fc95a45349798b26c803a13d432a/FLAG64283f719 [2020-10-29 07:06:09,313 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/518db08d6/fb50fc95a45349798b26c803a13d432a [2020-10-29 07:06:09,316 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 07:06:09,324 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 07:06:09,329 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 07:06:09,329 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 07:06:09,333 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 07:06:09,334 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:06:09" (1/1) ... [2020-10-29 07:06:09,338 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@323deba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:09, skipping insertion in model container [2020-10-29 07:06:09,338 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 07:06:09" (1/1) ... [2020-10-29 07:06:09,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 07:06:09,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 07:06:10,883 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:06:10,894 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 07:06:11,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 07:06:11,638 INFO L208 MainTranslator]: Completed translation [2020-10-29 07:06:11,639 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11 WrapperNode [2020-10-29 07:06:11,640 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 07:06:11,641 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 07:06:11,641 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 07:06:11,641 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 07:06:11,656 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11" (1/1) ... [2020-10-29 07:06:11,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11" (1/1) ... [2020-10-29 07:06:11,734 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11" (1/1) ... [2020-10-29 07:06:11,734 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11" (1/1) ... [2020-10-29 07:06:11,889 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11" (1/1) ... [2020-10-29 07:06:11,930 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11" (1/1) ... [2020-10-29 07:06:11,978 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11" (1/1) ... [2020-10-29 07:06:12,022 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 07:06:12,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 07:06:12,025 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 07:06:12,025 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 07:06:12,026 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 07:06:12,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 07:06:12,116 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 07:06:12,117 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 07:06:12,117 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 07:06:12,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 07:06:12,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 07:06:12,118 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 07:06:12,118 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 07:06:12,118 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 07:06:12,119 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 07:06:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 07:06:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 07:06:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 07:06:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 07:06:12,120 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 07:06:12,121 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 07:06:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 07:06:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 07:06:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 07:06:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 07:06:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 07:06:12,122 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 07:06:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 07:06:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 07:06:12,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 07:06:17,761 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 07:06:17,762 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 07:06:17,765 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:06:17 BoogieIcfgContainer [2020-10-29 07:06:17,765 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 07:06:17,770 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 07:06:17,770 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 07:06:17,775 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 07:06:17,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 07:06:09" (1/3) ... [2020-10-29 07:06:17,777 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136fb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:06:17, skipping insertion in model container [2020-10-29 07:06:17,777 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 07:06:11" (2/3) ... [2020-10-29 07:06:17,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2136fb93 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 07:06:17, skipping insertion in model container [2020-10-29 07:06:17,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 07:06:17" (3/3) ... [2020-10-29 07:06:17,781 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label50.c [2020-10-29 07:06:17,794 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 07:06:17,800 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 07:06:17,815 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 07:06:17,851 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 07:06:17,851 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 07:06:17,852 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 07:06:17,852 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 07:06:17,852 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 07:06:17,852 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 07:06:17,852 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 07:06:17,853 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 07:06:17,893 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 07:06:17,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-29 07:06:17,901 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:17,903 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] [2020-10-29 07:06:17,903 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:17,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:17,910 INFO L82 PathProgramCache]: Analyzing trace with hash -2048307116, now seen corresponding path program 1 times [2020-10-29 07:06:17,921 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:17,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1313474994] [2020-10-29 07:06:17,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:18,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:18,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:18,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:18,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-10-29 07:06:18,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:18,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-10-29 07:06:18,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:18,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:18,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:06:18,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-29 07:06:18,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 07:06:18,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:18,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:18,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:18,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:18,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:18,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:18,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 07:06:18,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:18,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:18,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:18,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:06:18,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:18,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:06:19,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1313474994] [2020-10-29 07:06:19,002 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:06:19,002 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 07:06:19,004 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099249589] [2020-10-29 07:06:19,009 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 07:06:19,009 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:19,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 07:06:19,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 07:06:19,035 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 07:06:31,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:31,250 INFO L93 Difference]: Finished difference Result 2492 states and 4754 transitions. [2020-10-29 07:06:31,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:06:31,253 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-29 07:06:31,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:31,285 INFO L225 Difference]: With dead ends: 2492 [2020-10-29 07:06:31,285 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 07:06:31,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:06:31,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 07:06:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1565. [2020-10-29 07:06:31,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1565 states. [2020-10-29 07:06:31,472 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1565 states to 1565 states and 2485 transitions. [2020-10-29 07:06:31,474 INFO L78 Accepts]: Start accepts. Automaton has 1565 states and 2485 transitions. Word has length 25 [2020-10-29 07:06:31,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:31,477 INFO L481 AbstractCegarLoop]: Abstraction has 1565 states and 2485 transitions. [2020-10-29 07:06:31,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 07:06:31,477 INFO L276 IsEmpty]: Start isEmpty. Operand 1565 states and 2485 transitions. [2020-10-29 07:06:31,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-10-29 07:06:31,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:31,487 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:06:31,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 07:06:31,488 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:31,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:31,490 INFO L82 PathProgramCache]: Analyzing trace with hash 419225565, now seen corresponding path program 1 times [2020-10-29 07:06:31,490 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:31,491 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [626998678] [2020-10-29 07:06:31,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:31,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:31,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:32,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:32,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-29 07:06:32,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:06:32,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 966 [2020-10-29 07:06:32,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:32,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:06:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-29 07:06:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:32,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:32,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:32,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:32,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:32,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:32,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:32,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 07:06:32,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:32,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:32,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:32,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:06:32,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:06:32,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:32,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:32,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:32,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:32,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-29 07:06:32,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:32,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-29 07:06:32,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:32,990 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-29 07:06:32,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:33,075 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:06:33,075 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [626998678] [2020-10-29 07:06:33,076 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:06:33,076 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:06:33,076 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1146961909] [2020-10-29 07:06:33,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:06:33,078 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:33,079 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:06:33,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:06:33,079 INFO L87 Difference]: Start difference. First operand 1565 states and 2485 transitions. Second operand 7 states. [2020-10-29 07:06:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:06:48,621 INFO L93 Difference]: Finished difference Result 4771 states and 7609 transitions. [2020-10-29 07:06:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:06:48,623 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 104 [2020-10-29 07:06:48,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:06:48,645 INFO L225 Difference]: With dead ends: 4771 [2020-10-29 07:06:48,646 INFO L226 Difference]: Without dead ends: 3212 [2020-10-29 07:06:48,651 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:06:48,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3212 states. [2020-10-29 07:06:48,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3212 to 3164. [2020-10-29 07:06:48,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3164 states. [2020-10-29 07:06:48,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3164 states to 3164 states and 4587 transitions. [2020-10-29 07:06:48,797 INFO L78 Accepts]: Start accepts. Automaton has 3164 states and 4587 transitions. Word has length 104 [2020-10-29 07:06:48,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:06:48,798 INFO L481 AbstractCegarLoop]: Abstraction has 3164 states and 4587 transitions. [2020-10-29 07:06:48,798 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:06:48,798 INFO L276 IsEmpty]: Start isEmpty. Operand 3164 states and 4587 transitions. [2020-10-29 07:06:48,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-10-29 07:06:48,801 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:06:48,802 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:06:48,802 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 07:06:48,802 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:06:48,803 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:06:48,803 INFO L82 PathProgramCache]: Analyzing trace with hash 1867796365, now seen corresponding path program 1 times [2020-10-29 07:06:48,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:06:48,804 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [358033237] [2020-10-29 07:06:48,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:06:48,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:48,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:49,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:50,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:50,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:50,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-29 07:06:50,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:06:50,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1674 [2020-10-29 07:06:50,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:50,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:06:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:06:50,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 07:06:50,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:50,656 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:06:50,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:50,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:50,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:50,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:06:50,682 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:50,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 07:06:50,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:50,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:06:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:06:50,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:06:50,683 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:06:50,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:06:50,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:06:50,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:06:51,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:06:51,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-29 07:06:51,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:06:51,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 298 [2020-10-29 07:06:51,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:06:51,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:06:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:06:51,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:06:51,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-29 07:06:51,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:06:51,200 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:06:51,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [358033237] [2020-10-29 07:06:51,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:06:51,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:06:51,203 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477686801] [2020-10-29 07:06:51,205 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:06:51,206 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:06:51,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:06:51,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:06:51,207 INFO L87 Difference]: Start difference. First operand 3164 states and 4587 transitions. Second operand 7 states. [2020-10-29 07:07:07,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:07,477 INFO L93 Difference]: Finished difference Result 9784 states and 14732 transitions. [2020-10-29 07:07:07,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:07:07,479 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 133 [2020-10-29 07:07:07,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:07,521 INFO L225 Difference]: With dead ends: 9784 [2020-10-29 07:07:07,522 INFO L226 Difference]: Without dead ends: 6626 [2020-10-29 07:07:07,532 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:07:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6626 states. [2020-10-29 07:07:07,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6626 to 6399. [2020-10-29 07:07:07,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6399 states. [2020-10-29 07:07:07,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6399 states to 6399 states and 8219 transitions. [2020-10-29 07:07:07,814 INFO L78 Accepts]: Start accepts. Automaton has 6399 states and 8219 transitions. Word has length 133 [2020-10-29 07:07:07,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:07,815 INFO L481 AbstractCegarLoop]: Abstraction has 6399 states and 8219 transitions. [2020-10-29 07:07:07,815 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:07:07,815 INFO L276 IsEmpty]: Start isEmpty. Operand 6399 states and 8219 transitions. [2020-10-29 07:07:07,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2020-10-29 07:07:07,819 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:07,820 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:07:07,820 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 07:07:07,820 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:07,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:07,821 INFO L82 PathProgramCache]: Analyzing trace with hash 921392225, now seen corresponding path program 1 times [2020-10-29 07:07:07,821 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:07,821 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1837688845] [2020-10-29 07:07:07,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:07,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:07,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:08,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:08,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-10-29 07:07:08,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:07:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 815 [2020-10-29 07:07:08,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:08,691 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:07:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:07:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 173 [2020-10-29 07:07:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:08,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:08,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:08,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:08,849 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:08,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:08,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:08,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:07:08,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:08,850 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:08,850 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:07:08,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:08,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:08,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:08,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:09,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:09,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:09,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:07:09,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:07:09,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-10-29 07:07:09,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:09,279 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:09,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:09,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:07:09,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:09,366 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 07:07:09,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1837688845] [2020-10-29 07:07:09,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:07:09,367 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:07:09,368 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281889866] [2020-10-29 07:07:09,368 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:07:09,368 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:09,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:07:09,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:07:09,369 INFO L87 Difference]: Start difference. First operand 6399 states and 8219 transitions. Second operand 5 states. [2020-10-29 07:07:23,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:23,733 INFO L93 Difference]: Finished difference Result 19117 states and 25088 transitions. [2020-10-29 07:07:23,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:07:23,735 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 170 [2020-10-29 07:07:23,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:23,795 INFO L225 Difference]: With dead ends: 19117 [2020-10-29 07:07:23,795 INFO L226 Difference]: Without dead ends: 12724 [2020-10-29 07:07:23,813 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:07:23,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12724 states. [2020-10-29 07:07:24,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12724 to 11957. [2020-10-29 07:07:24,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11957 states. [2020-10-29 07:07:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11957 states to 11957 states and 14967 transitions. [2020-10-29 07:07:24,158 INFO L78 Accepts]: Start accepts. Automaton has 11957 states and 14967 transitions. Word has length 170 [2020-10-29 07:07:24,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:24,159 INFO L481 AbstractCegarLoop]: Abstraction has 11957 states and 14967 transitions. [2020-10-29 07:07:24,159 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:07:24,160 INFO L276 IsEmpty]: Start isEmpty. Operand 11957 states and 14967 transitions. [2020-10-29 07:07:24,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2020-10-29 07:07:24,162 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:24,163 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:07:24,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:07:24,163 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:24,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:24,164 INFO L82 PathProgramCache]: Analyzing trace with hash 493629917, now seen corresponding path program 1 times [2020-10-29 07:07:24,164 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:24,164 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [597675668] [2020-10-29 07:07:24,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:24,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:24,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:24,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:26,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:26,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-10-29 07:07:26,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:07:26,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1957 [2020-10-29 07:07:26,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:26,181 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:07:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:07:26,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-29 07:07:26,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:26,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:26,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:26,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:26,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:26,380 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:26,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 07:07:26,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:26,381 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:26,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:07:26,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:26,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:26,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:26,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:26,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:26,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:07:26,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-29 07:07:26,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:26,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:26,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:26,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:26,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-29 07:07:26,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 07:07:27,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:07:27,009 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [597675668] [2020-10-29 07:07:27,009 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:07:27,009 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 07:07:27,009 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99131803] [2020-10-29 07:07:27,010 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 07:07:27,010 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:27,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 07:07:27,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:07:27,019 INFO L87 Difference]: Start difference. First operand 11957 states and 14967 transitions. Second operand 8 states. [2020-10-29 07:07:51,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:07:51,373 INFO L93 Difference]: Finished difference Result 32902 states and 41050 transitions. [2020-10-29 07:07:51,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 07:07:51,375 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 173 [2020-10-29 07:07:51,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:07:51,458 INFO L225 Difference]: With dead ends: 32902 [2020-10-29 07:07:51,458 INFO L226 Difference]: Without dead ends: 20951 [2020-10-29 07:07:51,485 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-29 07:07:51,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20951 states. [2020-10-29 07:07:51,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20951 to 19248. [2020-10-29 07:07:51,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19248 states. [2020-10-29 07:07:51,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19248 states to 19248 states and 23345 transitions. [2020-10-29 07:07:51,986 INFO L78 Accepts]: Start accepts. Automaton has 19248 states and 23345 transitions. Word has length 173 [2020-10-29 07:07:51,987 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:07:51,987 INFO L481 AbstractCegarLoop]: Abstraction has 19248 states and 23345 transitions. [2020-10-29 07:07:51,987 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 07:07:51,988 INFO L276 IsEmpty]: Start isEmpty. Operand 19248 states and 23345 transitions. [2020-10-29 07:07:51,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2020-10-29 07:07:51,992 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:07:51,993 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:07:51,993 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:07:51,993 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:07:51,994 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:07:51,996 INFO L82 PathProgramCache]: Analyzing trace with hash 740077992, now seen corresponding path program 1 times [2020-10-29 07:07:51,996 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:07:51,997 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162710928] [2020-10-29 07:07:51,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:07:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:52,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:52,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:53,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:53,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 259 [2020-10-29 07:07:53,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:07:53,673 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1592 [2020-10-29 07:07:53,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:53,673 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:53,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:53,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:07:53,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:07:53,674 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:07:53,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:07:53,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:53,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:53,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:53,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:07:53,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:53,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 07:07:53,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:53,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:53,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:07:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:53,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:07:53,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 07:07:53,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:07:53,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:53,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:54,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:54,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:07:54,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:54,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 07:07:54,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:54,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:07:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:07:54,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:07:54,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:54,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:07:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:07:54,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:07:54,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:07:54,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:07:54,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:07:54,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-29 07:07:54,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:07:54,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:07:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:07:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:07:54,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:07:54,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:07:54,555 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:07:54,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162710928] [2020-10-29 07:07:54,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:07:54,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:07:54,556 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214837746] [2020-10-29 07:07:54,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:07:54,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:07:54,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:07:54,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:07:54,558 INFO L87 Difference]: Start difference. First operand 19248 states and 23345 transitions. Second operand 7 states. [2020-10-29 07:08:16,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:16,681 INFO L93 Difference]: Finished difference Result 44727 states and 56515 transitions. [2020-10-29 07:08:16,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:08:16,683 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 245 [2020-10-29 07:08:16,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:16,782 INFO L225 Difference]: With dead ends: 44727 [2020-10-29 07:08:16,782 INFO L226 Difference]: Without dead ends: 25485 [2020-10-29 07:08:16,824 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:08:16,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25485 states. [2020-10-29 07:08:17,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25485 to 25238. [2020-10-29 07:08:17,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25238 states. [2020-10-29 07:08:17,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25238 states to 25238 states and 32098 transitions. [2020-10-29 07:08:17,524 INFO L78 Accepts]: Start accepts. Automaton has 25238 states and 32098 transitions. Word has length 245 [2020-10-29 07:08:17,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:17,525 INFO L481 AbstractCegarLoop]: Abstraction has 25238 states and 32098 transitions. [2020-10-29 07:08:17,526 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:17,526 INFO L276 IsEmpty]: Start isEmpty. Operand 25238 states and 32098 transitions. [2020-10-29 07:08:17,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2020-10-29 07:08:17,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:17,532 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:17,532 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:08:17,533 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:17,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:17,535 INFO L82 PathProgramCache]: Analyzing trace with hash -1016307580, now seen corresponding path program 1 times [2020-10-29 07:08:17,535 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:17,537 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [834272110] [2020-10-29 07:08:17,537 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:17,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:17,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:18,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:18,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:19,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:19,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 273 [2020-10-29 07:08:19,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:19,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1878 [2020-10-29 07:08:19,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:19,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:19,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 155 [2020-10-29 07:08:19,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:08:19,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:19,683 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:08:19,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:19,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:19,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:19,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:19,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:19,700 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:19,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 07:08:19,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:19,700 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:19,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:08:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:19,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:08:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 121 [2020-10-29 07:08:19,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:19,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:20,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:20,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:08:20,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 07:08:20,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:20,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:20,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 140 [2020-10-29 07:08:20,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:08:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:20,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:20,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:20,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:08:20,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:20,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-29 07:08:20,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:20,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:20,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:08:20,272 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:08:20,438 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [834272110] [2020-10-29 07:08:20,438 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:20,438 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:08:20,438 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992692037] [2020-10-29 07:08:20,439 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:20,439 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:20,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:20,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:20,441 INFO L87 Difference]: Start difference. First operand 25238 states and 32098 transitions. Second operand 7 states. [2020-10-29 07:08:46,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:08:46,070 INFO L93 Difference]: Finished difference Result 73462 states and 96816 transitions. [2020-10-29 07:08:46,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:08:46,072 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 259 [2020-10-29 07:08:46,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:08:46,265 INFO L225 Difference]: With dead ends: 73462 [2020-10-29 07:08:46,265 INFO L226 Difference]: Without dead ends: 48230 [2020-10-29 07:08:46,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:08:46,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48230 states. [2020-10-29 07:08:47,510 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48230 to 47225. [2020-10-29 07:08:47,510 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47225 states. [2020-10-29 07:08:47,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47225 states to 47225 states and 60737 transitions. [2020-10-29 07:08:47,607 INFO L78 Accepts]: Start accepts. Automaton has 47225 states and 60737 transitions. Word has length 259 [2020-10-29 07:08:47,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:08:47,608 INFO L481 AbstractCegarLoop]: Abstraction has 47225 states and 60737 transitions. [2020-10-29 07:08:47,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:08:47,608 INFO L276 IsEmpty]: Start isEmpty. Operand 47225 states and 60737 transitions. [2020-10-29 07:08:47,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 264 [2020-10-29 07:08:47,613 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:08:47,613 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:08:47,614 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:08:47,614 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:08:47,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:08:47,615 INFO L82 PathProgramCache]: Analyzing trace with hash 570122620, now seen corresponding path program 1 times [2020-10-29 07:08:47,615 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:08:47,615 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249219521] [2020-10-29 07:08:47,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:08:47,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:47,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:47,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:48,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:50,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:50,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 277 [2020-10-29 07:08:50,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:08:50,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2682 [2020-10-29 07:08:50,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:50,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:50,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-29 07:08:50,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-29 07:08:50,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:50,570 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:08:50,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:08:50,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:50,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:50,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:50,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:08:50,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:50,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 07:08:50,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:50,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:50,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:08:50,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:50,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:08:50,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:08:50,638 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:08:50,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:50,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:50,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:50,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-29 07:08:50,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:50,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-29 07:08:50,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:50,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:08:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:08:50,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-29 07:08:50,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:50,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-29 07:08:50,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:08:51,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:08:51,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:08:51,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-29 07:08:51,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:08:51,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-29 07:08:51,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:08:51,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:08:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:08:51,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:08:51,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-29 07:08:51,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:08:51,279 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:08:51,280 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249219521] [2020-10-29 07:08:51,280 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:08:51,280 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:08:51,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1056364797] [2020-10-29 07:08:51,281 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:08:51,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:08:51,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:08:51,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:08:51,282 INFO L87 Difference]: Start difference. First operand 47225 states and 60737 transitions. Second operand 7 states. [2020-10-29 07:08:52,206 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:09:23,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:23,573 INFO L93 Difference]: Finished difference Result 107070 states and 140938 transitions. [2020-10-29 07:09:23,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:09:23,575 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 263 [2020-10-29 07:09:23,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:23,757 INFO L225 Difference]: With dead ends: 107070 [2020-10-29 07:09:23,758 INFO L226 Difference]: Without dead ends: 59851 [2020-10-29 07:09:23,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:09:24,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59851 states. [2020-10-29 07:09:25,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59851 to 58779. [2020-10-29 07:09:25,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58779 states. [2020-10-29 07:09:25,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58779 states to 58779 states and 75480 transitions. [2020-10-29 07:09:25,912 INFO L78 Accepts]: Start accepts. Automaton has 58779 states and 75480 transitions. Word has length 263 [2020-10-29 07:09:25,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:25,913 INFO L481 AbstractCegarLoop]: Abstraction has 58779 states and 75480 transitions. [2020-10-29 07:09:25,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:09:25,914 INFO L276 IsEmpty]: Start isEmpty. Operand 58779 states and 75480 transitions. [2020-10-29 07:09:25,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-29 07:09:25,921 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:25,921 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:09:25,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:09:25,922 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:25,922 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:25,923 INFO L82 PathProgramCache]: Analyzing trace with hash -479477670, now seen corresponding path program 1 times [2020-10-29 07:09:25,923 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:25,923 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413656954] [2020-10-29 07:09:25,923 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:26,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:26,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:26,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:26,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 324 [2020-10-29 07:09:26,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:26,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 711 [2020-10-29 07:09:26,724 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:26,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:09:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-29 07:09:26,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-29 07:09:26,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:26,912 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:09:26,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:09:26,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:26,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:26,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:26,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:09:26,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:26,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:09:26,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:26,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:09:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:26,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:09:26,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:26,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:09:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:26,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:27,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:27,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:09:27,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:27,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-29 07:09:27,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:27,017 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:09:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:27,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:09:27,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:27,067 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:09:27,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:27,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:09:27,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 141 [2020-10-29 07:09:27,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:09:27,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-29 07:09:27,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:09:27,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:09:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:09:27,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:09:27,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-29 07:09:27,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:09:27,416 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 35 proven. 2 refuted. 0 times theorem prover too weak. 137 trivial. 0 not checked. [2020-10-29 07:09:27,417 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413656954] [2020-10-29 07:09:27,417 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:09:27,417 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 07:09:27,417 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596957577] [2020-10-29 07:09:27,418 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 07:09:27,418 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:09:27,419 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 07:09:27,419 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 07:09:27,419 INFO L87 Difference]: Start difference. First operand 58779 states and 75480 transitions. Second operand 5 states. [2020-10-29 07:09:29,077 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:09:46,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:09:46,819 INFO L93 Difference]: Finished difference Result 137810 states and 184223 transitions. [2020-10-29 07:09:46,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 07:09:46,821 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 310 [2020-10-29 07:09:46,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:09:47,319 INFO L225 Difference]: With dead ends: 137810 [2020-10-29 07:09:47,319 INFO L226 Difference]: Without dead ends: 79037 [2020-10-29 07:09:47,405 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:09:47,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79037 states. [2020-10-29 07:09:49,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79037 to 77450. [2020-10-29 07:09:49,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77450 states. [2020-10-29 07:09:49,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77450 states to 77450 states and 103032 transitions. [2020-10-29 07:09:49,411 INFO L78 Accepts]: Start accepts. Automaton has 77450 states and 103032 transitions. Word has length 310 [2020-10-29 07:09:49,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:09:49,411 INFO L481 AbstractCegarLoop]: Abstraction has 77450 states and 103032 transitions. [2020-10-29 07:09:49,411 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 07:09:49,411 INFO L276 IsEmpty]: Start isEmpty. Operand 77450 states and 103032 transitions. [2020-10-29 07:09:49,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-29 07:09:49,416 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:09:49,417 INFO L422 BasicCegarLoop]: trace histogram [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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:09:49,417 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:09:49,417 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:09:49,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:09:49,418 INFO L82 PathProgramCache]: Analyzing trace with hash 922241597, now seen corresponding path program 1 times [2020-10-29 07:09:49,418 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:09:49,418 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2125222475] [2020-10-29 07:09:49,418 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:09:49,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:09:49,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:49,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:09:51,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking...