/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/Problem06_label26.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 05:41:07,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 05:41:07,885 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 05:41:07,935 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 05:41:07,935 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 05:41:07,941 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 05:41:07,943 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 05:41:07,949 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 05:41:07,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 05:41:07,958 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 05:41:07,959 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 05:41:07,961 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 05:41:07,961 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 05:41:07,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 05:41:07,968 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 05:41:07,971 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 05:41:07,972 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 05:41:07,976 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 05:41:07,984 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 05:41:07,991 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 05:41:07,994 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 05:41:07,995 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 05:41:07,997 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 05:41:08,000 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 05:41:08,016 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 05:41:08,017 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 05:41:08,017 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 05:41:08,018 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 05:41:08,019 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 05:41:08,022 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 05:41:08,023 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 05:41:08,023 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 05:41:08,024 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 05:41:08,026 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 05:41:08,027 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 05:41:08,028 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 05:41:08,028 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 05:41:08,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 05:41:08,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 05:41:08,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 05:41:08,031 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 05:41:08,038 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 05:41:08,090 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 05:41:08,090 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 05:41:08,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 05:41:08,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 05:41:08,095 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 05:41:08,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 05:41:08,095 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 05:41:08,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 05:41:08,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 05:41:08,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 05:41:08,097 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 05:41:08,097 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 05:41:08,097 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 05:41:08,098 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 05:41:08,098 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 05:41:08,098 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 05:41:08,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 05:41:08,099 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 05:41:08,099 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 05:41:08,099 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 05:41:08,099 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 05:41:08,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 05:41:08,100 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 05:41:08,100 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 05:41:08,100 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 05:41:08,100 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 05:41:08,100 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 05:41:08,101 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 05:41:08,101 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 05:41:08,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 05:41:08,548 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 05:41:08,575 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 05:41:08,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 05:41:08,580 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 05:41:08,581 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 05:41:08,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label26.c [2020-10-29 05:41:08,666 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50cace879/336e37ca8e8c434e9755e9715104bd83/FLAGe810b084d [2020-10-29 05:41:09,886 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 05:41:09,886 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label26.c [2020-10-29 05:41:09,938 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50cace879/336e37ca8e8c434e9755e9715104bd83/FLAGe810b084d [2020-10-29 05:41:10,136 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50cace879/336e37ca8e8c434e9755e9715104bd83 [2020-10-29 05:41:10,139 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 05:41:10,146 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 05:41:10,148 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 05:41:10,148 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 05:41:10,152 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 05:41:10,153 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:41:10" (1/1) ... [2020-10-29 05:41:10,156 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41b8afaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:10, skipping insertion in model container [2020-10-29 05:41:10,156 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 05:41:10" (1/1) ... [2020-10-29 05:41:10,165 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 05:41:10,378 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 05:41:12,372 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:41:12,387 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 05:41:13,530 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 05:41:13,601 INFO L208 MainTranslator]: Completed translation [2020-10-29 05:41:13,602 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13 WrapperNode [2020-10-29 05:41:13,602 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 05:41:13,603 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 05:41:13,603 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 05:41:13,604 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 05:41:13,619 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13" (1/1) ... [2020-10-29 05:41:13,621 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13" (1/1) ... [2020-10-29 05:41:13,718 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13" (1/1) ... [2020-10-29 05:41:13,718 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13" (1/1) ... [2020-10-29 05:41:13,963 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13" (1/1) ... [2020-10-29 05:41:13,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13" (1/1) ... [2020-10-29 05:41:14,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13" (1/1) ... [2020-10-29 05:41:14,102 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 05:41:14,103 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 05:41:14,103 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 05:41:14,104 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 05:41:14,104 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13" (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 05:41:14,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 05:41:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 05:41:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 05:41:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 05:41:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 05:41:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 05:41:14,188 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 05:41:14,189 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-29 05:41:14,189 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 05:41:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 05:41:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 05:41:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 05:41:14,189 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 05:41:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-29 05:41:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 05:41:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 05:41:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 05:41:14,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 05:41:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 05:41:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 05:41:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 05:41:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 05:41:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 05:41:14,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 05:41:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 05:41:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 05:41:14,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 05:41:25,971 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 05:41:25,971 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 05:41:25,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:41:25 BoogieIcfgContainer [2020-10-29 05:41:25,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 05:41:25,977 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 05:41:25,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 05:41:25,981 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 05:41:25,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 05:41:10" (1/3) ... [2020-10-29 05:41:25,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a1bf08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:41:25, skipping insertion in model container [2020-10-29 05:41:25,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 05:41:13" (2/3) ... [2020-10-29 05:41:25,983 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33a1bf08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 05:41:25, skipping insertion in model container [2020-10-29 05:41:25,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 05:41:25" (3/3) ... [2020-10-29 05:41:25,985 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label26.c [2020-10-29 05:41:25,997 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 05:41:26,003 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 05:41:26,017 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 05:41:26,053 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 05:41:26,053 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 05:41:26,053 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 05:41:26,054 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 05:41:26,054 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 05:41:26,054 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 05:41:26,054 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 05:41:26,054 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 05:41:26,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-29 05:41:26,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 973 [2020-10-29 05:41:26,175 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:41:26,177 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:26,177 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:41:26,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:41:26,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1200464008, now seen corresponding path program 1 times [2020-10-29 05:41:26,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:41:26,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [918171975] [2020-10-29 05:41:26,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:41:27,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:29,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:32,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:32,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 990 [2020-10-29 05:41:32,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:41:32,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5040 [2020-10-29 05:41:32,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:32,348 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:32,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-29 05:41:32,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:41:32,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 981 [2020-10-29 05:41:32,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:41:33,940 WARN L193 SmtUtils]: Spent 402.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:41:33,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:41:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:33,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:41:34,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:41:34,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:41:34,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:41:34,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-29 05:41:34,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:41:34,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:41:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:41:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:41:34,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:41:34,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:41:35,114 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 05:41:35,115 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [918171975] [2020-10-29 05:41:35,116 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 05:41:35,117 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 05:41:35,117 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [786489822] [2020-10-29 05:41:35,124 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 05:41:35,124 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:41:35,138 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 05:41:35,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 05:41:35,141 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 4 states. [2020-10-29 05:41:35,627 WARN L193 SmtUtils]: Spent 405.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:41:57,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:41:57,660 INFO L93 Difference]: Finished difference Result 3764 states and 7025 transitions. [2020-10-29 05:41:57,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:41:57,663 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 972 [2020-10-29 05:41:57,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:41:57,708 INFO L225 Difference]: With dead ends: 3764 [2020-10-29 05:41:57,709 INFO L226 Difference]: Without dead ends: 2381 [2020-10-29 05:41:57,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:41:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2381 states. [2020-10-29 05:41:57,920 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2381 to 2338. [2020-10-29 05:41:57,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2338 states. [2020-10-29 05:41:57,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2338 states to 2338 states and 3805 transitions. [2020-10-29 05:41:57,938 INFO L78 Accepts]: Start accepts. Automaton has 2338 states and 3805 transitions. Word has length 972 [2020-10-29 05:41:57,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:41:57,944 INFO L481 AbstractCegarLoop]: Abstraction has 2338 states and 3805 transitions. [2020-10-29 05:41:57,944 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 05:41:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 2338 states and 3805 transitions. [2020-10-29 05:41:57,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 981 [2020-10-29 05:41:57,986 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:41:57,987 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:41:57,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 05:41:57,987 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:41:57,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:41:57,990 INFO L82 PathProgramCache]: Analyzing trace with hash -822138759, now seen corresponding path program 1 times [2020-10-29 05:41:57,990 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:41:57,990 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2147140033] [2020-10-29 05:41:57,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:41:58,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:41:58,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:00,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:03,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:03,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1000 [2020-10-29 05:42:03,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:42:03,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5070 [2020-10-29 05:42:03,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:03,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:03,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:42:03,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-29 05:42:03,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 978 [2020-10-29 05:42:03,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:42:05,495 WARN L193 SmtUtils]: Spent 392.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:42:05,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:42:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:05,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:05,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:05,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:42:05,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 05:42:05,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:05,518 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:42:05,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:05,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:42:05,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:42:05,721 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:42:05,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:42:05,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:05,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:05,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:05,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:42:05,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:05,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-29 05:42:05,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:05,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:42:05,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:05,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-29 05:42:05,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 05:42:06,768 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:42:06,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2147140033] [2020-10-29 05:42:06,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:42:06,769 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:42:06,769 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1332766544] [2020-10-29 05:42:06,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:42:06,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:42:06,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:42:06,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:42:06,773 INFO L87 Difference]: Start difference. First operand 2338 states and 3805 transitions. Second operand 5 states. [2020-10-29 05:42:07,364 WARN L193 SmtUtils]: Spent 432.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:42:32,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:42:32,085 INFO L93 Difference]: Finished difference Result 5772 states and 9691 transitions. [2020-10-29 05:42:32,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:42:32,087 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 980 [2020-10-29 05:42:32,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:42:32,109 INFO L225 Difference]: With dead ends: 5772 [2020-10-29 05:42:32,110 INFO L226 Difference]: Without dead ends: 3440 [2020-10-29 05:42:32,117 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:42:32,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3440 states. [2020-10-29 05:42:32,212 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3440 to 3398. [2020-10-29 05:42:32,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3398 states. [2020-10-29 05:42:32,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3398 states to 3398 states and 5290 transitions. [2020-10-29 05:42:32,225 INFO L78 Accepts]: Start accepts. Automaton has 3398 states and 5290 transitions. Word has length 980 [2020-10-29 05:42:32,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:42:32,227 INFO L481 AbstractCegarLoop]: Abstraction has 3398 states and 5290 transitions. [2020-10-29 05:42:32,227 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:42:32,228 INFO L276 IsEmpty]: Start isEmpty. Operand 3398 states and 5290 transitions. [2020-10-29 05:42:32,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 990 [2020-10-29 05:42:32,271 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:42:32,272 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:42:32,272 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 05:42:32,273 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:42:32,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:42:32,274 INFO L82 PathProgramCache]: Analyzing trace with hash 2084462385, now seen corresponding path program 1 times [2020-10-29 05:42:32,274 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:42:32,274 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1409133176] [2020-10-29 05:42:32,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:42:32,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:32,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:36,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:37,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:37,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-29 05:42:37,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 05:42:37,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-29 05:42:37,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:37,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:37,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 05:42:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:42:37,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-29 05:42:37,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:42:38,494 WARN L193 SmtUtils]: Spent 548.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:42:38,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:42:38,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:38,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:38,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:42:38,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:38,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:42:38,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:38,530 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:42:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:42:38,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:42:38,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:42:38,718 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:42:38,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:42:38,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:38,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:38,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:38,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:38,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-29 05:42:38,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:42:38,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-29 05:42:38,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:38,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:38,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:42:38,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:42:38,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 05:42:38,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:42:38,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-29 05:42:38,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:42:38,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:42:38,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:42:38,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:42:38,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:42:38,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-29 05:42:38,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:42:38,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:42:38,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:42:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:42:38,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 05:42:38,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 05:42:39,610 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 12 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-29 05:42:39,610 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1409133176] [2020-10-29 05:42:39,610 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:42:39,611 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:42:39,611 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748778152] [2020-10-29 05:42:39,613 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 05:42:39,613 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:42:39,614 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 05:42:39,614 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-29 05:42:39,614 INFO L87 Difference]: Start difference. First operand 3398 states and 5290 transitions. Second operand 8 states. [2020-10-29 05:42:40,164 WARN L193 SmtUtils]: Spent 460.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:42:42,067 WARN L193 SmtUtils]: Spent 513.00 ms on a formula simplification that was a NOOP. DAG size: 162 [2020-10-29 05:43:10,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:43:10,494 INFO L93 Difference]: Finished difference Result 10050 states and 15860 transitions. [2020-10-29 05:43:10,499 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 05:43:10,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 989 [2020-10-29 05:43:10,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:43:10,534 INFO L225 Difference]: With dead ends: 10050 [2020-10-29 05:43:10,535 INFO L226 Difference]: Without dead ends: 6658 [2020-10-29 05:43:10,545 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:43:10,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6658 states. [2020-10-29 05:43:10,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6658 to 6606. [2020-10-29 05:43:10,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6606 states. [2020-10-29 05:43:10,749 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6606 states to 6606 states and 9738 transitions. [2020-10-29 05:43:10,750 INFO L78 Accepts]: Start accepts. Automaton has 6606 states and 9738 transitions. Word has length 989 [2020-10-29 05:43:10,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:43:10,750 INFO L481 AbstractCegarLoop]: Abstraction has 6606 states and 9738 transitions. [2020-10-29 05:43:10,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 05:43:10,751 INFO L276 IsEmpty]: Start isEmpty. Operand 6606 states and 9738 transitions. [2020-10-29 05:43:10,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 992 [2020-10-29 05:43:10,782 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:43:10,783 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:10,784 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 05:43:10,784 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:43:10,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:43:10,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1191835838, now seen corresponding path program 1 times [2020-10-29 05:43:10,785 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:43:10,785 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [458676356] [2020-10-29 05:43:10,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:43:10,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:10,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:16,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:16,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1011 [2020-10-29 05:43:16,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:43:16,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5188 [2020-10-29 05:43:16,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:16,114 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:16,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:43:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-29 05:43:16,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 978 [2020-10-29 05:43:16,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:17,232 WARN L193 SmtUtils]: Spent 370.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:43:17,233 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:43:17,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:17,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:17,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:17,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:43:17,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:17,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-29 05:43:17,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:17,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:43:17,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:43:17,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:43:17,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:17,441 WARN L193 SmtUtils]: Spent 174.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:43:17,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:43:17,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:17,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:17,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:17,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-29 05:43:17,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:17,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 05:43:17,474 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:17,474 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:43:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:43:17,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 05:43:17,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 05:43:18,505 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:43:18,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [458676356] [2020-10-29 05:43:18,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:43:18,506 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:43:18,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629268944] [2020-10-29 05:43:18,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:43:18,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:43:18,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:43:18,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:43:18,508 INFO L87 Difference]: Start difference. First operand 6606 states and 9738 transitions. Second operand 5 states. [2020-10-29 05:43:19,186 WARN L193 SmtUtils]: Spent 435.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:43:44,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:43:44,586 INFO L93 Difference]: Finished difference Result 15372 states and 23440 transitions. [2020-10-29 05:43:44,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:43:44,591 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 991 [2020-10-29 05:43:44,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:43:44,632 INFO L225 Difference]: With dead ends: 15372 [2020-10-29 05:43:44,632 INFO L226 Difference]: Without dead ends: 8772 [2020-10-29 05:43:44,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:43:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8772 states. [2020-10-29 05:43:44,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8772 to 8707. [2020-10-29 05:43:44,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8707 states. [2020-10-29 05:43:44,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8707 states to 8707 states and 12729 transitions. [2020-10-29 05:43:44,889 INFO L78 Accepts]: Start accepts. Automaton has 8707 states and 12729 transitions. Word has length 991 [2020-10-29 05:43:44,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:43:44,891 INFO L481 AbstractCegarLoop]: Abstraction has 8707 states and 12729 transitions. [2020-10-29 05:43:44,891 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:43:44,891 INFO L276 IsEmpty]: Start isEmpty. Operand 8707 states and 12729 transitions. [2020-10-29 05:43:44,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 997 [2020-10-29 05:43:44,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:43:44,923 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:43:44,923 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 05:43:44,923 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:43:44,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:43:44,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1793809020, now seen corresponding path program 1 times [2020-10-29 05:43:44,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:43:44,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [530703015] [2020-10-29 05:43:44,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:43:45,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:45,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:45,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:50,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:50,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1018 [2020-10-29 05:43:50,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:43:50,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5042 [2020-10-29 05:43:50,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:50,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 05:43:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 05:43:50,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-29 05:43:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:50,687 WARN L193 SmtUtils]: Spent 416.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:43:50,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:43:50,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:50,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:50,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:50,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:43:50,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:50,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 05:43:50,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:50,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:43:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:43:50,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 05:43:50,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:50,914 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:43:50,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:43:50,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:50,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:50,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:50,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-29 05:43:50,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:50,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-29 05:43:50,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:50,967 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 05:43:50,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 05:43:50,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-29 05:43:50,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:51,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-29 05:43:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:43:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:43:51,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:43:51,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 05:43:51,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:43:51,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-29 05:43:51,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:43:51,025 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:43:51,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:43:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-10-29 05:43:51,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:43:51,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:43:51,671 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 05:43:51,671 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [530703015] [2020-10-29 05:43:51,671 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:43:51,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 05:43:51,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1833725449] [2020-10-29 05:43:51,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 05:43:51,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:43:51,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 05:43:51,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 05:43:51,674 INFO L87 Difference]: Start difference. First operand 8707 states and 12729 transitions. Second operand 7 states. [2020-10-29 05:43:52,161 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:43:54,661 WARN L193 SmtUtils]: Spent 434.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:44:22,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:44:22,603 INFO L93 Difference]: Finished difference Result 26698 states and 41201 transitions. [2020-10-29 05:44:22,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 05:44:22,605 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 996 [2020-10-29 05:44:22,605 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:44:22,686 INFO L225 Difference]: With dead ends: 26698 [2020-10-29 05:44:22,686 INFO L226 Difference]: Without dead ends: 17997 [2020-10-29 05:44:22,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 05:44:22,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17997 states. [2020-10-29 05:44:23,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17997 to 17779. [2020-10-29 05:44:23,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17779 states. [2020-10-29 05:44:23,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17779 states to 17779 states and 25567 transitions. [2020-10-29 05:44:23,283 INFO L78 Accepts]: Start accepts. Automaton has 17779 states and 25567 transitions. Word has length 996 [2020-10-29 05:44:23,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:44:23,284 INFO L481 AbstractCegarLoop]: Abstraction has 17779 states and 25567 transitions. [2020-10-29 05:44:23,284 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 05:44:23,284 INFO L276 IsEmpty]: Start isEmpty. Operand 17779 states and 25567 transitions. [2020-10-29 05:44:23,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1017 [2020-10-29 05:44:23,353 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:44:23,353 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:23,354 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 05:44:23,354 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:44:23,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:44:23,355 INFO L82 PathProgramCache]: Analyzing trace with hash -2032563293, now seen corresponding path program 1 times [2020-10-29 05:44:23,356 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:44:23,357 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133753497] [2020-10-29 05:44:23,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:44:23,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:23,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:28,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:28,493 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1036 [2020-10-29 05:44:28,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 05:44:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-29 05:44:28,494 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:28,494 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-29 05:44:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-10-29 05:44:28,494 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 978 [2020-10-29 05:44:28,494 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:29,573 WARN L193 SmtUtils]: Spent 431.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-29 05:44:29,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 05:44:29,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:29,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:29,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:29,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 05:44:29,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:44:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 05:44:29,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:29,589 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 05:44:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:44:29,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 05:44:29,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:29,786 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-29 05:44:29,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 05:44:29,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:29,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 05:44:29,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 05:44:29,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 05:44:29,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 05:44:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-10-29 05:44:29,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 05:44:29,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 05:44:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 05:44:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 05:44:29,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 05:44:29,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 05:44:30,799 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 05:44:30,800 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133753497] [2020-10-29 05:44:30,800 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 05:44:30,800 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 05:44:30,800 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [385180220] [2020-10-29 05:44:30,802 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 05:44:30,802 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 05:44:30,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 05:44:30,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 05:44:30,803 INFO L87 Difference]: Start difference. First operand 17779 states and 25567 transitions. Second operand 5 states. [2020-10-29 05:44:31,290 WARN L193 SmtUtils]: Spent 442.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-29 05:44:54,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 05:44:54,433 INFO L93 Difference]: Finished difference Result 52632 states and 80209 transitions. [2020-10-29 05:44:54,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 05:44:54,435 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 1016 [2020-10-29 05:44:54,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 05:44:54,578 INFO L225 Difference]: With dead ends: 52632 [2020-10-29 05:44:54,578 INFO L226 Difference]: Without dead ends: 34859 [2020-10-29 05:44:54,625 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 05:44:54,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34859 states. [2020-10-29 05:44:55,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34859 to 34822. [2020-10-29 05:44:55,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34822 states. [2020-10-29 05:44:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34822 states to 34822 states and 50972 transitions. [2020-10-29 05:44:55,757 INFO L78 Accepts]: Start accepts. Automaton has 34822 states and 50972 transitions. Word has length 1016 [2020-10-29 05:44:55,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 05:44:55,758 INFO L481 AbstractCegarLoop]: Abstraction has 34822 states and 50972 transitions. [2020-10-29 05:44:55,759 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 05:44:55,759 INFO L276 IsEmpty]: Start isEmpty. Operand 34822 states and 50972 transitions. [2020-10-29 05:44:55,887 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1033 [2020-10-29 05:44:55,887 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 05:44:55,888 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:44:55,888 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 05:44:55,888 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 05:44:55,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 05:44:55,889 INFO L82 PathProgramCache]: Analyzing trace with hash -601755372, now seen corresponding path program 1 times [2020-10-29 05:44:55,889 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 05:44:55,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2058599324] [2020-10-29 05:44:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 05:44:56,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 05:44:56,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking...