/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_label23.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:58:49,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:58:49,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:58:49,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:58:49,977 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:58:49,985 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:58:49,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:58:49,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:58:49,997 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:58:50,005 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:58:50,007 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:58:50,008 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:58:50,009 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:58:50,012 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:58:50,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:58:50,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:58:50,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:58:50,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:58:50,038 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:58:50,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:58:50,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:58:50,059 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:58:50,061 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:58:50,064 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:58:50,074 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:58:50,074 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:58:50,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:58:50,079 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:58:50,080 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:58:50,081 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:58:50,082 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:58:50,083 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:58:50,084 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:58:50,085 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:58:50,087 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:58:50,087 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:58:50,088 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:58:50,089 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:58:50,089 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:58:50,090 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:58:50,091 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:58:50,099 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 06:58:50,153 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:58:50,154 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:58:50,159 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:58:50,159 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:58:50,160 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:58:50,160 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:58:50,160 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:58:50,160 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:58:50,161 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:58:50,161 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:58:50,162 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:58:50,162 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:58:50,163 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:58:50,163 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:58:50,163 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:58:50,163 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:58:50,164 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:58:50,164 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:58:50,164 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:58:50,164 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:58:50,165 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:58:50,165 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:58:50,165 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:58:50,165 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:58:50,165 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:58:50,166 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:58:50,166 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:58:50,166 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:58:50,166 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:58:50,167 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:58:50,644 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:58:50,676 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:58:50,679 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:58:50,681 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:58:50,683 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:58:50,684 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label23.c [2020-10-29 06:58:50,770 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b717b5f2/7e9ae75b39ca41ffbaaf07141013f584/FLAGf9a0fbf0d [2020-10-29 06:58:51,873 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:58:51,874 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label23.c [2020-10-29 06:58:51,918 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b717b5f2/7e9ae75b39ca41ffbaaf07141013f584/FLAGf9a0fbf0d [2020-10-29 06:58:52,319 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2b717b5f2/7e9ae75b39ca41ffbaaf07141013f584 [2020-10-29 06:58:52,323 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:58:52,329 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:58:52,333 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:58:52,333 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:58:52,339 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:58:52,340 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:58:52" (1/1) ... [2020-10-29 06:58:52,347 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60edccd6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:52, skipping insertion in model container [2020-10-29 06:58:52,347 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:58:52" (1/1) ... [2020-10-29 06:58:52,357 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:58:52,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:58:54,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:58:54,090 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:58:54,809 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:58:54,847 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:58:54,848 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54 WrapperNode [2020-10-29 06:58:54,848 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:58:54,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:58:54,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:58:54,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:58:54,865 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54" (1/1) ... [2020-10-29 06:58:54,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54" (1/1) ... [2020-10-29 06:58:54,948 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54" (1/1) ... [2020-10-29 06:58:54,949 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54" (1/1) ... [2020-10-29 06:58:55,117 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54" (1/1) ... [2020-10-29 06:58:55,162 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54" (1/1) ... [2020-10-29 06:58:55,216 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54" (1/1) ... [2020-10-29 06:58:55,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:58:55,341 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:58:55,341 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:58:55,341 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:58:55,342 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54" (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 06:58:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:58:55,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:58:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:58:55,443 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:58:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:58:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:58:55,444 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:58:55,445 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:58:55,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:58:55,445 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:58:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:58:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:58:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:58:55,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:58:55,447 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:58:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:58:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:58:55,448 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:58:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:58:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:58:55,482 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:58:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:58:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:58:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:58:55,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:59:01,566 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:59:01,567 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:59:01,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:59:01 BoogieIcfgContainer [2020-10-29 06:59:01,571 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:59:01,573 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:59:01,573 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:59:01,577 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:59:01,577 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:58:52" (1/3) ... [2020-10-29 06:59:01,578 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8ffeac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:59:01, skipping insertion in model container [2020-10-29 06:59:01,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:58:54" (2/3) ... [2020-10-29 06:59:01,579 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d8ffeac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:59:01, skipping insertion in model container [2020-10-29 06:59:01,579 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:59:01" (3/3) ... [2020-10-29 06:59:01,581 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label23.c [2020-10-29 06:59:01,595 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:59:01,601 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:59:01,615 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:59:01,653 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:59:01,654 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:59:01,654 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:59:01,654 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:59:01,654 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:59:01,654 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:59:01,654 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:59:01,654 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:59:01,691 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:59:01,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 06:59:01,699 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:01,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:59:01,700 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:01,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:01,707 INFO L82 PathProgramCache]: Analyzing trace with hash -61379068, now seen corresponding path program 1 times [2020-10-29 06:59:01,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:01,717 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1924981735] [2020-10-29 06:59:01,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:02,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:02,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:02,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 52 [2020-10-29 06:59:02,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:02,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-10-29 06:59:02,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:02,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:02,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:02,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 06:59:02,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 06:59:02,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:02,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:02,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:02,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:02,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:02,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:02,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 06:59:02,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:02,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:02,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:02,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:02,861 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 06:59:02,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1924981735] [2020-10-29 06:59:02,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:59:02,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:59:02,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596443836] [2020-10-29 06:59:02,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:59:02,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:02,888 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:59:02,889 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:59:02,892 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 06:59:14,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:14,551 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:59:14,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:59:14,553 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-10-29 06:59:14,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:14,584 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:59:14,584 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:59:14,595 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 06:59:14,620 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:59:14,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:59:14,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:59:14,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2726 transitions. [2020-10-29 06:59:14,805 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2726 transitions. Word has length 42 [2020-10-29 06:59:14,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:14,805 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2726 transitions. [2020-10-29 06:59:14,806 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:59:14,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2726 transitions. [2020-10-29 06:59:14,813 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-29 06:59:14,814 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:14,814 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:14,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:59:14,815 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:14,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:14,818 INFO L82 PathProgramCache]: Analyzing trace with hash 2053883182, now seen corresponding path program 1 times [2020-10-29 06:59:14,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:14,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587739141] [2020-10-29 06:59:14,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:14,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:14,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:15,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:15,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:16,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:16,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-29 06:59:16,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:16,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-29 06:59:16,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:16,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:16,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:59:16,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:16,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-29 06:59:16,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 06:59:16,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:16,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:16,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:16,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:16,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:16,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:16,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:59:16,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:16,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:16,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:16,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:16,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:16,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-29 06:59:16,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:16,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:16,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:16,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:16,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 06:59:16,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:16,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-29 06:59:16,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:16,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:16,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-29 06:59:16,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:16,847 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 30 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:59:16,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587739141] [2020-10-29 06:59:16,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:16,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 06:59:16,848 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940972142] [2020-10-29 06:59:16,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:59:16,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:16,854 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:59:16,855 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:59:16,856 INFO L87 Difference]: Start difference. First operand 1554 states and 2726 transitions. Second operand 6 states. [2020-10-29 06:59:29,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:29,151 INFO L93 Difference]: Finished difference Result 4670 states and 8258 transitions. [2020-10-29 06:59:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:59:29,155 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 111 [2020-10-29 06:59:29,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:29,177 INFO L225 Difference]: With dead ends: 4670 [2020-10-29 06:59:29,177 INFO L226 Difference]: Without dead ends: 3122 [2020-10-29 06:59:29,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:29,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3122 states. [2020-10-29 06:59:29,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3122 to 3107. [2020-10-29 06:59:29,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3107 states. [2020-10-29 06:59:29,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3107 states to 3107 states and 5318 transitions. [2020-10-29 06:59:29,291 INFO L78 Accepts]: Start accepts. Automaton has 3107 states and 5318 transitions. Word has length 111 [2020-10-29 06:59:29,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:29,292 INFO L481 AbstractCegarLoop]: Abstraction has 3107 states and 5318 transitions. [2020-10-29 06:59:29,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:59:29,293 INFO L276 IsEmpty]: Start isEmpty. Operand 3107 states and 5318 transitions. [2020-10-29 06:59:29,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-29 06:59:29,296 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:29,296 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:29,296 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:59:29,297 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:29,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:29,297 INFO L82 PathProgramCache]: Analyzing trace with hash 834340706, now seen corresponding path program 1 times [2020-10-29 06:59:29,297 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:29,298 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634946704] [2020-10-29 06:59:29,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:29,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:29,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:29,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:29,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-29 06:59:29,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:29,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 277 [2020-10-29 06:59:29,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:29,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:29,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:59:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 06:59:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:29,749 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:29,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:29,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:29,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:29,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:29,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 06:59:29,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:29,768 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:29,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:29,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:29,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:29,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:29,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:29,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:29,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:59:29,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:29,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-29 06:59:29,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:29,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:29,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:29,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:59:29,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:29,995 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 33 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:59:29,996 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634946704] [2020-10-29 06:59:29,996 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:29,996 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:59:29,997 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683224450] [2020-10-29 06:59:29,997 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:59:29,998 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:29,998 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:59:29,998 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:59:29,999 INFO L87 Difference]: Start difference. First operand 3107 states and 5318 transitions. Second operand 5 states. [2020-10-29 06:59:44,243 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:44,244 INFO L93 Difference]: Finished difference Result 9333 states and 16191 transitions. [2020-10-29 06:59:44,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:59:44,245 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-29 06:59:44,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:44,290 INFO L225 Difference]: With dead ends: 9333 [2020-10-29 06:59:44,291 INFO L226 Difference]: Without dead ends: 6232 [2020-10-29 06:59:44,301 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:59:44,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6232 states. [2020-10-29 06:59:44,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6232 to 6215. [2020-10-29 06:59:44,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6215 states. [2020-10-29 06:59:44,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6215 states to 6215 states and 9387 transitions. [2020-10-29 06:59:44,510 INFO L78 Accepts]: Start accepts. Automaton has 6215 states and 9387 transitions. Word has length 117 [2020-10-29 06:59:44,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:44,511 INFO L481 AbstractCegarLoop]: Abstraction has 6215 states and 9387 transitions. [2020-10-29 06:59:44,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:59:44,511 INFO L276 IsEmpty]: Start isEmpty. Operand 6215 states and 9387 transitions. [2020-10-29 06:59:44,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2020-10-29 06:59:44,516 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:44,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 06:59:44,517 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:59:44,517 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:44,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:44,518 INFO L82 PathProgramCache]: Analyzing trace with hash -1572178038, now seen corresponding path program 1 times [2020-10-29 06:59:44,518 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:44,518 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153250802] [2020-10-29 06:59:44,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:44,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:44,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:45,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:45,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-10-29 06:59:45,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:59:45,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1194 [2020-10-29 06:59:45,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:45,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:59:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:59:45,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-29 06:59:45,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:45,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:45,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:45,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:45,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:45,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:45,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:45,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 06:59:45,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:45,909 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:45,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:59:45,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:45,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:45,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:45,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:46,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:46,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-29 06:59:46,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:46,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 06:59:46,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:46,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:46,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-29 06:59:46,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:46,291 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:59:46,291 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153250802] [2020-10-29 06:59:46,292 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:59:46,292 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:59:46,292 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524102486] [2020-10-29 06:59:46,293 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:46,293 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:46,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:46,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:46,305 INFO L87 Difference]: Start difference. First operand 6215 states and 9387 transitions. Second operand 7 states. [2020-10-29 07:00:02,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:02,928 INFO L93 Difference]: Finished difference Result 18091 states and 28100 transitions. [2020-10-29 07:00:02,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:00:02,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 161 [2020-10-29 07:00:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:03,006 INFO L225 Difference]: With dead ends: 18091 [2020-10-29 07:00:03,006 INFO L226 Difference]: Without dead ends: 11882 [2020-10-29 07:00:03,028 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 07:00:03,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11882 states. [2020-10-29 07:00:03,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11882 to 11789. [2020-10-29 07:00:03,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11789 states. [2020-10-29 07:00:03,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11789 states to 11789 states and 16407 transitions. [2020-10-29 07:00:03,423 INFO L78 Accepts]: Start accepts. Automaton has 11789 states and 16407 transitions. Word has length 161 [2020-10-29 07:00:03,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:03,424 INFO L481 AbstractCegarLoop]: Abstraction has 11789 states and 16407 transitions. [2020-10-29 07:00:03,424 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:03,424 INFO L276 IsEmpty]: Start isEmpty. Operand 11789 states and 16407 transitions. [2020-10-29 07:00:03,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-10-29 07:00:03,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:03,428 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:03,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 07:00:03,429 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:03,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:03,429 INFO L82 PathProgramCache]: Analyzing trace with hash 499625844, now seen corresponding path program 1 times [2020-10-29 07:00:03,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:03,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925737708] [2020-10-29 07:00:03,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:03,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:03,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:03,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:04,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:04,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 174 [2020-10-29 07:00:04,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 07:00:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1323 [2020-10-29 07:00:04,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:04,803 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:04,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-29 07:00:04,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:04,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:04,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:04,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:04,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:04,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:04,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:04,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-29 07:00:04,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:04,989 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:04,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:04,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:05,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:05,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:05,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:05,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-29 07:00:05,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:05,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-29 07:00:05,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:05,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:05,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-29 07:00:05,304 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-29 07:00:05,448 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 07:00:05,448 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925737708] [2020-10-29 07:00:05,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 07:00:05,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 07:00:05,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1901472246] [2020-10-29 07:00:05,449 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:05,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:05,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:05,450 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:05,452 INFO L87 Difference]: Start difference. First operand 11789 states and 16407 transitions. Second operand 7 states. [2020-10-29 07:00:22,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:22,027 INFO L93 Difference]: Finished difference Result 28699 states and 41574 transitions. [2020-10-29 07:00:22,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:00:22,029 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 162 [2020-10-29 07:00:22,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:22,101 INFO L225 Difference]: With dead ends: 28699 [2020-10-29 07:00:22,101 INFO L226 Difference]: Without dead ends: 16916 [2020-10-29 07:00:22,139 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:00:22,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16916 states. [2020-10-29 07:00:22,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16916 to 16792. [2020-10-29 07:00:22,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16792 states. [2020-10-29 07:00:22,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16792 states to 16792 states and 21142 transitions. [2020-10-29 07:00:22,584 INFO L78 Accepts]: Start accepts. Automaton has 16792 states and 21142 transitions. Word has length 162 [2020-10-29 07:00:22,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:22,585 INFO L481 AbstractCegarLoop]: Abstraction has 16792 states and 21142 transitions. [2020-10-29 07:00:22,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 16792 states and 21142 transitions. [2020-10-29 07:00:22,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 199 [2020-10-29 07:00:22,591 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:22,591 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:00:22,592 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 07:00:22,592 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:22,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:22,593 INFO L82 PathProgramCache]: Analyzing trace with hash -49190920, now seen corresponding path program 1 times [2020-10-29 07:00:22,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:22,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [716867811] [2020-10-29 07:00:22,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:22,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:22,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:22,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:23,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:24,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:24,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 212 [2020-10-29 07:00:24,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:00:24,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2291 [2020-10-29 07:00:24,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:24,943 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 07:00:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 07:00:24,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-29 07:00:24,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:25,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:25,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:25,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:25,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:25,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:25,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:25,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 07:00:25,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:25,108 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:25,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 07:00:25,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:25,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:25,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:25,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:25,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:25,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 07:00:25,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:25,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-29 07:00:25,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:25,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:25,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:25,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 07:00:25,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:25,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 07:00:25,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:25,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:25,571 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:25,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 07:00:25,572 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:25,572 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 07:00:25,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:25,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:25,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:25,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 07:00:25,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:25,702 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 69 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 07:00:25,702 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [716867811] [2020-10-29 07:00:25,703 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:25,703 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:00:25,703 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169506040] [2020-10-29 07:00:25,704 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:25,704 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:25,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:25,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:25,705 INFO L87 Difference]: Start difference. First operand 16792 states and 21142 transitions. Second operand 7 states. [2020-10-29 07:00:44,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:44,709 INFO L93 Difference]: Finished difference Result 38137 states and 50547 transitions. [2020-10-29 07:00:44,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:00:44,711 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 198 [2020-10-29 07:00:44,712 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:44,794 INFO L225 Difference]: With dead ends: 38137 [2020-10-29 07:00:44,795 INFO L226 Difference]: Without dead ends: 21351 [2020-10-29 07:00:44,839 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:00:44,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21351 states. [2020-10-29 07:00:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21351 to 17136. [2020-10-29 07:00:45,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17136 states. [2020-10-29 07:00:45,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17136 states to 17136 states and 21807 transitions. [2020-10-29 07:00:45,558 INFO L78 Accepts]: Start accepts. Automaton has 17136 states and 21807 transitions. Word has length 198 [2020-10-29 07:00:45,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:45,560 INFO L481 AbstractCegarLoop]: Abstraction has 17136 states and 21807 transitions. [2020-10-29 07:00:45,560 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:45,561 INFO L276 IsEmpty]: Start isEmpty. Operand 17136 states and 21807 transitions. [2020-10-29 07:00:45,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 358 [2020-10-29 07:00:45,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:45,572 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:00:45,573 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 07:00:45,573 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:45,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:45,576 INFO L82 PathProgramCache]: Analyzing trace with hash -1598788270, now seen corresponding path program 1 times [2020-10-29 07:00:45,576 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:45,576 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56107758] [2020-10-29 07:00:45,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:45,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:45,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:49,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:50,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:50,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 373 [2020-10-29 07:00:50,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:00:50,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5065 [2020-10-29 07:00:50,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:50,742 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 07:00:50,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 233 [2020-10-29 07:00:50,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-29 07:00:50,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:50,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:50,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:50,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:50,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:50,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:50,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:50,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 07:00:50,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:50,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:50,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:50,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:50,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:50,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:50,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:51,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:51,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:51,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:00:51,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:51,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 51 [2020-10-29 07:00:51,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:51,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:51,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:51,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:51,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:00:51,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:51,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:51,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:51,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 07:00:51,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:51,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-29 07:00:51,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:51,221 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:51,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 07:00:51,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:51,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-29 07:00:51,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:51,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:51,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:51,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-29 07:00:51,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:51,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-29 07:00:51,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:51,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:51,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-29 07:00:51,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:51,790 INFO L134 CoverageAnalysis]: Checked inductivity of 342 backedges. 231 proven. 35 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2020-10-29 07:00:51,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56107758] [2020-10-29 07:00:51,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:51,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 07:00:51,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025252636] [2020-10-29 07:00:51,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 07:00:51,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:51,793 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 07:00:51,794 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 07:00:51,795 INFO L87 Difference]: Start difference. First operand 17136 states and 21807 transitions. Second operand 6 states. [2020-10-29 07:01:09,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:09,065 INFO L93 Difference]: Finished difference Result 43111 states and 56469 transitions. [2020-10-29 07:01:09,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 07:01:09,066 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 357 [2020-10-29 07:01:09,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:09,153 INFO L225 Difference]: With dead ends: 43111 [2020-10-29 07:01:09,153 INFO L226 Difference]: Without dead ends: 26750 [2020-10-29 07:01:09,190 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 07:01:09,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26750 states. [2020-10-29 07:01:09,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26750 to 26643. [2020-10-29 07:01:09,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26643 states. [2020-10-29 07:01:09,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26643 states to 26643 states and 33493 transitions. [2020-10-29 07:01:09,765 INFO L78 Accepts]: Start accepts. Automaton has 26643 states and 33493 transitions. Word has length 357 [2020-10-29 07:01:09,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:09,766 INFO L481 AbstractCegarLoop]: Abstraction has 26643 states and 33493 transitions. [2020-10-29 07:01:09,766 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 07:01:09,766 INFO L276 IsEmpty]: Start isEmpty. Operand 26643 states and 33493 transitions. [2020-10-29 07:01:09,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 397 [2020-10-29 07:01:09,779 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:09,779 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 07:01:09,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 07:01:09,780 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:09,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:09,781 INFO L82 PathProgramCache]: Analyzing trace with hash -1293417564, now seen corresponding path program 1 times [2020-10-29 07:01:09,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:09,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955010662] [2020-10-29 07:01:09,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:09,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:10,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:10,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:11,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:14,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:14,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 412 [2020-10-29 07:01:14,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:01:14,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4872 [2020-10-29 07:01:14,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:14,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:14,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-29 07:01:14,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:01:14,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:15,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:15,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:15,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:15,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:15,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:15,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 07:01:15,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:15,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:15,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:15,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:15,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:15,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:15,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:15,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:15,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 07:01:15,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:15,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-29 07:01:15,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:15,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:15,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:15,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 07:01:15,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:15,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:15,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:15,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-29 07:01:15,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:15,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 07:01:15,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:15,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:15,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 07:01:15,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:15,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-29 07:01:15,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:15,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:15,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:15,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 07:01:15,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:15,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-29 07:01:15,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:15,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:15,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:01:15,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:15,886 INFO L134 CoverageAnalysis]: Checked inductivity of 394 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-29 07:01:15,887 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955010662] [2020-10-29 07:01:15,887 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:15,887 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:01:15,887 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495596990] [2020-10-29 07:01:15,890 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:15,890 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:15,891 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:15,891 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:15,891 INFO L87 Difference]: Start difference. First operand 26643 states and 33493 transitions. Second operand 7 states. [2020-10-29 07:01:34,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:01:34,857 INFO L93 Difference]: Finished difference Result 60522 states and 78566 transitions. [2020-10-29 07:01:34,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-29 07:01:34,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 396 [2020-10-29 07:01:34,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:01:34,977 INFO L225 Difference]: With dead ends: 60522 [2020-10-29 07:01:34,977 INFO L226 Difference]: Without dead ends: 34654 [2020-10-29 07:01:35,023 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 07:01:35,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34654 states. [2020-10-29 07:01:35,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34654 to 34521. [2020-10-29 07:01:35,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34521 states. [2020-10-29 07:01:35,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34521 states to 34521 states and 43603 transitions. [2020-10-29 07:01:35,931 INFO L78 Accepts]: Start accepts. Automaton has 34521 states and 43603 transitions. Word has length 396 [2020-10-29 07:01:35,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:01:35,932 INFO L481 AbstractCegarLoop]: Abstraction has 34521 states and 43603 transitions. [2020-10-29 07:01:35,932 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:01:35,933 INFO L276 IsEmpty]: Start isEmpty. Operand 34521 states and 43603 transitions. [2020-10-29 07:01:35,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 441 [2020-10-29 07:01:35,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:01:35,954 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:01:35,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:01:35,954 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:01:35,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:01:35,955 INFO L82 PathProgramCache]: Analyzing trace with hash -536704184, now seen corresponding path program 1 times [2020-10-29 07:01:35,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:01:35,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1460107347] [2020-10-29 07:01:35,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:01:36,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:36,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:36,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:38,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:39,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:41,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 456 [2020-10-29 07:01:41,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 07:01:41,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-29 07:01:41,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:41,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-29 07:01:41,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-29 07:01:41,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:41,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:01:41,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:41,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:41,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:01:41,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:41,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 07:01:41,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:41,329 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:41,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:41,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:41,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:01:41,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:01:41,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:41,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:41,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:01:41,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:41,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-29 07:01:41,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:41,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:01:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:41,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:01:41,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:41,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:01:41,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:41,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:41,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-29 07:01:41,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:41,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 07:01:41,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:41,636 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:01:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:01:41,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-29 07:01:41,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:41,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 280 [2020-10-29 07:01:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:01:41,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:01:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:01:41,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-29 07:01:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:01:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-29 07:01:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:01:41,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:01:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:01:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:01:41,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-29 07:01:41,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:01:42,063 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 351 proven. 2 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2020-10-29 07:01:42,064 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1460107347] [2020-10-29 07:01:42,064 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:01:42,064 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:01:42,065 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87308328] [2020-10-29 07:01:42,065 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:01:42,066 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:01:42,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:01:42,066 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:01:42,067 INFO L87 Difference]: Start difference. First operand 34521 states and 43603 transitions. Second operand 7 states. [2020-10-29 07:01:49,229 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:02:05,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:02:05,805 INFO L93 Difference]: Finished difference Result 85877 states and 119195 transitions. [2020-10-29 07:02:05,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:02:05,807 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 440 [2020-10-29 07:02:05,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:02:05,999 INFO L225 Difference]: With dead ends: 85877 [2020-10-29 07:02:05,999 INFO L226 Difference]: Without dead ends: 49769 [2020-10-29 07:02:06,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 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 07:02:06,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49769 states. [2020-10-29 07:02:07,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49769 to 49108. [2020-10-29 07:02:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49108 states. [2020-10-29 07:02:07,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49108 states to 49108 states and 61646 transitions. [2020-10-29 07:02:07,934 INFO L78 Accepts]: Start accepts. Automaton has 49108 states and 61646 transitions. Word has length 440 [2020-10-29 07:02:07,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:02:07,935 INFO L481 AbstractCegarLoop]: Abstraction has 49108 states and 61646 transitions. [2020-10-29 07:02:07,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:02:07,935 INFO L276 IsEmpty]: Start isEmpty. Operand 49108 states and 61646 transitions. [2020-10-29 07:02:07,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-29 07:02:07,964 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:02:07,965 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:02:07,965 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-29 07:02:07,965 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:02:07,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:02:07,966 INFO L82 PathProgramCache]: Analyzing trace with hash -977591112, now seen corresponding path program 1 times [2020-10-29 07:02:07,966 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:02:07,966 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1114880177] [2020-10-29 07:02:07,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:02:08,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:08,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:08,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:13,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:13,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 478 [2020-10-29 07:02:13,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:02:13,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 07:02:13,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:13,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-29 07:02:13,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 277 [2020-10-29 07:02:13,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:13,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:02:13,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:13,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:13,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:13,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:02:13,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:13,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 07:02:13,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:13,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:13,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:02:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:13,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:02:13,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:02:13,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:13,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:13,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:13,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:02:13,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:13,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-29 07:02:13,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:13,637 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:02:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:02:13,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 07:02:13,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:13,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:02:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:02:13,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:02:14,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:02:14,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-29 07:02:14,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:02:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 451 [2020-10-29 07:02:14,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:02:14,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:02:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:02:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:02:14,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-29 07:02:14,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:02:14,787 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 213 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:02:14,788 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1114880177] [2020-10-29 07:02:14,788 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:02:14,788 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:02:14,788 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1835430634] [2020-10-29 07:02:14,791 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:02:14,791 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:02:14,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:02:14,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:02:14,792 INFO L87 Difference]: Start difference. First operand 49108 states and 61646 transitions. Second operand 7 states. [2020-10-29 07:02:16,283 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-29 07:02:23,215 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 71