/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 06:56:58,918 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 06:56:58,923 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 06:56:59,016 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 06:56:59,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 06:56:59,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 06:56:59,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 06:56:59,037 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 06:56:59,041 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 06:56:59,051 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 06:56:59,053 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 06:56:59,055 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 06:56:59,055 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 06:56:59,059 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 06:56:59,064 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 06:56:59,067 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 06:56:59,069 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 06:56:59,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 06:56:59,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 06:56:59,079 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 06:56:59,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 06:56:59,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 06:56:59,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 06:56:59,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 06:56:59,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 06:56:59,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 06:56:59,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 06:56:59,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 06:56:59,097 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 06:56:59,099 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 06:56:59,099 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 06:56:59,100 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 06:56:59,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 06:56:59,103 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 06:56:59,105 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 06:56:59,105 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 06:56:59,107 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 06:56:59,107 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 06:56:59,107 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 06:56:59,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 06:56:59,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 06:56:59,112 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-29 06:56:59,141 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 06:56:59,141 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 06:56:59,143 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 06:56:59,143 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 06:56:59,144 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 06:56:59,144 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 06:56:59,144 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 06:56:59,144 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 06:56:59,145 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 06:56:59,145 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 06:56:59,145 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 06:56:59,145 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 06:56:59,146 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 06:56:59,146 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 06:56:59,146 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 06:56:59,146 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 06:56:59,147 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 06:56:59,147 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 06:56:59,147 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 06:56:59,147 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 06:56:59,148 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 06:56:59,148 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:56:59,148 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 06:56:59,148 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 06:56:59,149 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 06:56:59,149 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 06:56:59,149 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 06:56:59,149 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 06:56:59,150 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 06:56:59,150 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 06:56:59,645 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 06:56:59,716 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 06:56:59,720 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 06:56:59,723 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 06:56:59,724 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 06:56:59,727 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label15.c [2020-10-29 06:56:59,827 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1aee624e/fea08b7451cd4d3ebe0c22268cdc3256/FLAG8f2bc2dbb [2020-10-29 06:57:00,929 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 06:57:00,930 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label15.c [2020-10-29 06:57:00,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1aee624e/fea08b7451cd4d3ebe0c22268cdc3256/FLAG8f2bc2dbb [2020-10-29 06:57:01,422 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a1aee624e/fea08b7451cd4d3ebe0c22268cdc3256 [2020-10-29 06:57:01,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 06:57:01,435 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 06:57:01,439 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 06:57:01,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 06:57:01,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 06:57:01,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:57:01" (1/1) ... [2020-10-29 06:57:01,451 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e730c82 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:01, skipping insertion in model container [2020-10-29 06:57:01,452 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 06:57:01" (1/1) ... [2020-10-29 06:57:01,464 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 06:57:01,688 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 06:57:03,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:57:03,124 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 06:57:03,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 06:57:04,017 INFO L208 MainTranslator]: Completed translation [2020-10-29 06:57:04,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04 WrapperNode [2020-10-29 06:57:04,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 06:57:04,020 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 06:57:04,020 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 06:57:04,020 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 06:57:04,037 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04" (1/1) ... [2020-10-29 06:57:04,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04" (1/1) ... [2020-10-29 06:57:04,125 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04" (1/1) ... [2020-10-29 06:57:04,126 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04" (1/1) ... [2020-10-29 06:57:04,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04" (1/1) ... [2020-10-29 06:57:04,268 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04" (1/1) ... [2020-10-29 06:57:04,297 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04" (1/1) ... [2020-10-29 06:57:04,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 06:57:04,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 06:57:04,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 06:57:04,326 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 06:57:04,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 06:57:04,418 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 06:57:04,419 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 06:57:04,419 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 06:57:04,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 06:57:04,419 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 06:57:04,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-29 06:57:04,420 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-29 06:57:04,420 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 06:57:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 06:57:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 06:57:04,420 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-29 06:57:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-29 06:57:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 06:57:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 06:57:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 06:57:04,421 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 06:57:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 06:57:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 06:57:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 06:57:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 06:57:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 06:57:04,422 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 06:57:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 06:57:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 06:57:04,423 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 06:57:10,082 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 06:57:10,083 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 06:57:10,087 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:57:10 BoogieIcfgContainer [2020-10-29 06:57:10,087 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 06:57:10,126 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 06:57:10,126 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 06:57:10,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 06:57:10,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 06:57:01" (1/3) ... [2020-10-29 06:57:10,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe18905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:57:10, skipping insertion in model container [2020-10-29 06:57:10,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 06:57:04" (2/3) ... [2020-10-29 06:57:10,136 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2fe18905 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 06:57:10, skipping insertion in model container [2020-10-29 06:57:10,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 06:57:10" (3/3) ... [2020-10-29 06:57:10,140 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label15.c [2020-10-29 06:57:10,159 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 06:57:10,168 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 06:57:10,188 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 06:57:10,256 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 06:57:10,257 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 06:57:10,257 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 06:57:10,257 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 06:57:10,258 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 06:57:10,258 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 06:57:10,258 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 06:57:10,258 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 06:57:10,338 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-29 06:57:10,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-10-29 06:57:10,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:10,359 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] [2020-10-29 06:57:10,360 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:10,373 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:10,374 INFO L82 PathProgramCache]: Analyzing trace with hash 1105152228, now seen corresponding path program 1 times [2020-10-29 06:57:10,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:10,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2024819634] [2020-10-29 06:57:10,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:10,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:11,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:11,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-29 06:57:11,549 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:11,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 736 [2020-10-29 06:57:11,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:11,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:57:11,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-29 06:57:11,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 06:57:11,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:11,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:11,806 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:11,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:11,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:11,807 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-29 06:57:11,807 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:11,807 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:11,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:57:11,808 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:11,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:57:11,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2024819634] [2020-10-29 06:57:11,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:57:11,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 06:57:11,845 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948053534] [2020-10-29 06:57:11,853 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 06:57:11,853 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:11,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 06:57:11,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 06:57:11,876 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-29 06:57:23,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:23,900 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-29 06:57:23,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:57:23,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 61 [2020-10-29 06:57:23,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:23,941 INFO L225 Difference]: With dead ends: 2476 [2020-10-29 06:57:23,942 INFO L226 Difference]: Without dead ends: 1569 [2020-10-29 06:57:23,959 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:57:23,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-29 06:57:24,168 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-29 06:57:24,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-29 06:57:24,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2834 transitions. [2020-10-29 06:57:24,186 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2834 transitions. Word has length 61 [2020-10-29 06:57:24,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:24,189 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2834 transitions. [2020-10-29 06:57:24,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 06:57:24,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2834 transitions. [2020-10-29 06:57:24,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-10-29 06:57:24,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:24,209 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:57:24,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 06:57:24,212 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:24,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:24,214 INFO L82 PathProgramCache]: Analyzing trace with hash 1136150433, now seen corresponding path program 1 times [2020-10-29 06:57:24,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:24,214 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878652986] [2020-10-29 06:57:24,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:24,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:24,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:25,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:25,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:57:25,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:57:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-29 06:57:25,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:25,641 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:25,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:25,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-29 06:57:25,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 06:57:25,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:25,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:25,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:25,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:25,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:25,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:25,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:25,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:57:25,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:25,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:57:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:25,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:57:25,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:25,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:25,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:25,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:25,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:25,934 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-29 06:57:25,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:25,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-10-29 06:57:25,935 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:25,935 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:25,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:25,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-29 06:57:25,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:26,030 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 52 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:57:26,031 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878652986] [2020-10-29 06:57:26,031 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:26,032 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:57:26,032 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479700672] [2020-10-29 06:57:26,034 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:57:26,034 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:26,035 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:57:26,035 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:57:26,036 INFO L87 Difference]: Start difference. First operand 1554 states and 2834 transitions. Second operand 5 states. [2020-10-29 06:57:40,557 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:40,558 INFO L93 Difference]: Finished difference Result 4673 states and 8573 transitions. [2020-10-29 06:57:40,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:57:40,566 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 134 [2020-10-29 06:57:40,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:40,590 INFO L225 Difference]: With dead ends: 4673 [2020-10-29 06:57:40,590 INFO L226 Difference]: Without dead ends: 3125 [2020-10-29 06:57:40,595 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:57:40,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-29 06:57:40,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3121. [2020-10-29 06:57:40,690 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3121 states. [2020-10-29 06:57:40,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3121 states to 3121 states and 5023 transitions. [2020-10-29 06:57:40,703 INFO L78 Accepts]: Start accepts. Automaton has 3121 states and 5023 transitions. Word has length 134 [2020-10-29 06:57:40,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:40,704 INFO L481 AbstractCegarLoop]: Abstraction has 3121 states and 5023 transitions. [2020-10-29 06:57:40,704 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:57:40,704 INFO L276 IsEmpty]: Start isEmpty. Operand 3121 states and 5023 transitions. [2020-10-29 06:57:40,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2020-10-29 06:57:40,708 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:40,708 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:57:40,708 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 06:57:40,709 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:40,710 INFO L82 PathProgramCache]: Analyzing trace with hash 331426213, now seen corresponding path program 1 times [2020-10-29 06:57:40,710 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:40,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1374047823] [2020-10-29 06:57:40,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:40,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:40,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:41,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:42,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:42,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-29 06:57:42,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:57:42,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-29 06:57:42,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:42,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 06:57:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:57:42,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-29 06:57:42,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:42,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:42,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:42,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:42,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:42,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:42,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:42,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-29 06:57:42,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:42,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:42,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:42,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:42,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:57:42,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:42,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:42,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:42,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:42,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:57:42,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:42,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-29 06:57:42,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:42,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:42,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:42,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-29 06:57:42,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:57:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 06:57:42,660 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1374047823] [2020-10-29 06:57:42,660 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:57:42,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:57:42,660 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [695266725] [2020-10-29 06:57:42,662 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 06:57:42,662 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:42,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 06:57:42,664 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:57:42,665 INFO L87 Difference]: Start difference. First operand 3121 states and 5023 transitions. Second operand 6 states. [2020-10-29 06:57:56,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:57:56,591 INFO L93 Difference]: Finished difference Result 9450 states and 15496 transitions. [2020-10-29 06:57:56,601 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 06:57:56,602 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 136 [2020-10-29 06:57:56,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:57:56,651 INFO L225 Difference]: With dead ends: 9450 [2020-10-29 06:57:56,651 INFO L226 Difference]: Without dead ends: 6335 [2020-10-29 06:57:56,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:57:56,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6335 states. [2020-10-29 06:57:56,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6335 to 6315. [2020-10-29 06:57:56,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6315 states. [2020-10-29 06:57:56,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6315 states to 6315 states and 9034 transitions. [2020-10-29 06:57:56,898 INFO L78 Accepts]: Start accepts. Automaton has 6315 states and 9034 transitions. Word has length 136 [2020-10-29 06:57:56,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:57:56,903 INFO L481 AbstractCegarLoop]: Abstraction has 6315 states and 9034 transitions. [2020-10-29 06:57:56,904 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 06:57:56,904 INFO L276 IsEmpty]: Start isEmpty. Operand 6315 states and 9034 transitions. [2020-10-29 06:57:56,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2020-10-29 06:57:56,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:57:56,908 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:57:56,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 06:57:56,908 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:57:56,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:57:56,909 INFO L82 PathProgramCache]: Analyzing trace with hash 1547022257, now seen corresponding path program 1 times [2020-10-29 06:57:56,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:57:56,916 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [763394201] [2020-10-29 06:57:56,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:57:56,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:56,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:57,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:57,893 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:57,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-10-29 06:57:57,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 06:57:57,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 929 [2020-10-29 06:57:57,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:57,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:57:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:57:57,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 06:57:57,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:58,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:57:58,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:58,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:58,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:58,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:57:58,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:58,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-29 06:57:58,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:58,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:57:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:57:58,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:57:58,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:57:58,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:57:58,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:57:58,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:57:58,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:57:58,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-29 06:57:58,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:57:58,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-10-29 06:57:58,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:57:58,301 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:57:58,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:57:58,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:57:58,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 06:57:58,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-29 06:57:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:57:58,407 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [763394201] [2020-10-29 06:57:58,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:57:58,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:57:58,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340155523] [2020-10-29 06:57:58,409 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:57:58,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:57:58,415 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:57:58,416 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:57:58,416 INFO L87 Difference]: Start difference. First operand 6315 states and 9034 transitions. Second operand 7 states. [2020-10-29 06:58:16,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:16,100 INFO L93 Difference]: Finished difference Result 16015 states and 23528 transitions. [2020-10-29 06:58:16,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 06:58:16,102 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 142 [2020-10-29 06:58:16,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:16,151 INFO L225 Difference]: With dead ends: 16015 [2020-10-29 06:58:16,151 INFO L226 Difference]: Without dead ends: 9706 [2020-10-29 06:58:16,172 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-29 06:58:16,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9706 states. [2020-10-29 06:58:16,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9706 to 8820. [2020-10-29 06:58:16,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8820 states. [2020-10-29 06:58:16,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8820 states to 8820 states and 12522 transitions. [2020-10-29 06:58:16,457 INFO L78 Accepts]: Start accepts. Automaton has 8820 states and 12522 transitions. Word has length 142 [2020-10-29 06:58:16,457 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:16,457 INFO L481 AbstractCegarLoop]: Abstraction has 8820 states and 12522 transitions. [2020-10-29 06:58:16,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:58:16,458 INFO L276 IsEmpty]: Start isEmpty. Operand 8820 states and 12522 transitions. [2020-10-29 06:58:16,464 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2020-10-29 06:58:16,464 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:16,465 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 06:58:16,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 06:58:16,465 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:16,465 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:16,466 INFO L82 PathProgramCache]: Analyzing trace with hash 576304337, now seen corresponding path program 1 times [2020-10-29 06:58:16,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:16,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [397925787] [2020-10-29 06:58:16,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:16,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:17,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:18,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:18,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-29 06:58:18,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:58:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1990 [2020-10-29 06:58:18,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:18,527 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 06:58:18,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 06:58:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-29 06:58:18,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:18,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:18,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:18,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:18,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:18,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:18,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:18,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 06:58:18,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:18,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:18,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:18,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 06:58:18,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:18,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:18,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:19,094 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:19,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 06:58:19,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:19,095 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-10-29 06:58:19,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:19,095 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:19,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:58:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:58:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:19,309 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 06:58:19,309 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [397925787] [2020-10-29 06:58:19,310 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 06:58:19,310 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-29 06:58:19,310 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650872323] [2020-10-29 06:58:19,311 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:58:19,311 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:19,311 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:58:19,312 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:58:19,312 INFO L87 Difference]: Start difference. First operand 8820 states and 12522 transitions. Second operand 7 states. [2020-10-29 06:58:37,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:37,206 INFO L93 Difference]: Finished difference Result 22975 states and 33070 transitions. [2020-10-29 06:58:37,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 06:58:37,209 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 227 [2020-10-29 06:58:37,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:37,281 INFO L225 Difference]: With dead ends: 22975 [2020-10-29 06:58:37,281 INFO L226 Difference]: Without dead ends: 14161 [2020-10-29 06:58:37,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 06:58:37,327 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14161 states. [2020-10-29 06:58:37,745 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14161 to 13820. [2020-10-29 06:58:37,745 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13820 states. [2020-10-29 06:58:37,786 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13820 states to 13820 states and 18468 transitions. [2020-10-29 06:58:37,786 INFO L78 Accepts]: Start accepts. Automaton has 13820 states and 18468 transitions. Word has length 227 [2020-10-29 06:58:37,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:37,787 INFO L481 AbstractCegarLoop]: Abstraction has 13820 states and 18468 transitions. [2020-10-29 06:58:37,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 06:58:37,787 INFO L276 IsEmpty]: Start isEmpty. Operand 13820 states and 18468 transitions. [2020-10-29 06:58:37,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-29 06:58:37,795 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:37,796 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 06:58:37,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 06:58:37,797 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:37,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:37,797 INFO L82 PathProgramCache]: Analyzing trace with hash -851589064, now seen corresponding path program 1 times [2020-10-29 06:58:37,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:37,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [276762756] [2020-10-29 06:58:37,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:37,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:37,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:38,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:39,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:40,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:40,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-29 06:58:40,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:58:40,805 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2923 [2020-10-29 06:58:40,805 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:40,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:58:40,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 232 [2020-10-29 06:58:40,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-29 06:58:40,806 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:41,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:58:41,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:41,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:41,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:41,039 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:58:41,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:41,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:58:41,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:41,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:41,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:41,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:41,040 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:41,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:58:41,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:41,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:41,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:41,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-29 06:58:41,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:41,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-29 06:58:41,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:41,153 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:58:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:41,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:58:41,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:41,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-29 06:58:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:41,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:41,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:58:41,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:58:41,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:58:41,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-29 06:58:41,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:58:41,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:58:41,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:58:41,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:58:41,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:58:41,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:58:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 107 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-29 06:58:41,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [276762756] [2020-10-29 06:58:41,434 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:58:41,434 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 06:58:41,434 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077896643] [2020-10-29 06:58:41,435 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 06:58:41,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:58:41,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 06:58:41,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 06:58:41,436 INFO L87 Difference]: Start difference. First operand 13820 states and 18468 transitions. Second operand 5 states. [2020-10-29 06:58:41,575 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 06:58:56,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:58:56,678 INFO L93 Difference]: Finished difference Result 34762 states and 48344 transitions. [2020-10-29 06:58:56,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 06:58:56,680 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 281 [2020-10-29 06:58:56,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:58:56,760 INFO L225 Difference]: With dead ends: 34762 [2020-10-29 06:58:56,760 INFO L226 Difference]: Without dead ends: 20948 [2020-10-29 06:58:56,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-29 06:58:56,822 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20948 states. [2020-10-29 06:58:57,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20948 to 20851. [2020-10-29 06:58:57,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20851 states. [2020-10-29 06:58:57,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20851 states to 20851 states and 27108 transitions. [2020-10-29 06:58:57,350 INFO L78 Accepts]: Start accepts. Automaton has 20851 states and 27108 transitions. Word has length 281 [2020-10-29 06:58:57,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:58:57,350 INFO L481 AbstractCegarLoop]: Abstraction has 20851 states and 27108 transitions. [2020-10-29 06:58:57,351 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 06:58:57,351 INFO L276 IsEmpty]: Start isEmpty. Operand 20851 states and 27108 transitions. [2020-10-29 06:58:57,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-10-29 06:58:57,360 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:58:57,361 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:58:57,361 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 06:58:57,361 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:58:57,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:58:57,363 INFO L82 PathProgramCache]: Analyzing trace with hash 1020062930, now seen corresponding path program 1 times [2020-10-29 06:58:57,363 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:58:57,364 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271045023] [2020-10-29 06:58:57,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:58:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:58:57,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:57,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:58,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:58:59,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:00,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:00,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-29 06:59:00,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 06:59:00,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2904 [2020-10-29 06:59:00,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:00,335 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:59:00,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-29 06:59:00,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:00,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:00,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:00,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:00,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:00,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:00,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:00,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 06:59:00,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:00,551 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:00,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:00,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:00,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:00,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:00,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:59:00,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:00,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-29 06:59:00,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:00,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:00,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:59:00,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:00,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:59:00,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:00,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:01,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:01,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-10-29 06:59:01,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:01,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-29 06:59:01,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:01,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:01,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:01,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-29 06:59:01,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:01,391 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:59:01,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271045023] [2020-10-29 06:59:01,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:01,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 06:59:01,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205870169] [2020-10-29 06:59:01,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-29 06:59:01,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:01,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-29 06:59:01,394 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-29 06:59:01,394 INFO L87 Difference]: Start difference. First operand 20851 states and 27108 transitions. Second operand 8 states. [2020-10-29 06:59:41,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 06:59:41,888 INFO L93 Difference]: Finished difference Result 91307 states and 131780 transitions. [2020-10-29 06:59:41,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 06:59:41,891 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-10-29 06:59:41,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 06:59:42,269 INFO L225 Difference]: With dead ends: 91307 [2020-10-29 06:59:42,269 INFO L226 Difference]: Without dead ends: 70462 [2020-10-29 06:59:42,356 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-29 06:59:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70462 states. [2020-10-29 06:59:44,572 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70462 to 68003. [2020-10-29 06:59:44,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68003 states. [2020-10-29 06:59:45,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68003 states to 68003 states and 91152 transitions. [2020-10-29 06:59:45,137 INFO L78 Accepts]: Start accepts. Automaton has 68003 states and 91152 transitions. Word has length 302 [2020-10-29 06:59:45,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 06:59:45,138 INFO L481 AbstractCegarLoop]: Abstraction has 68003 states and 91152 transitions. [2020-10-29 06:59:45,138 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-29 06:59:45,138 INFO L276 IsEmpty]: Start isEmpty. Operand 68003 states and 91152 transitions. [2020-10-29 06:59:45,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 314 [2020-10-29 06:59:45,170 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 06:59:45,173 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-29 06:59:45,173 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 06:59:45,174 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 06:59:45,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 06:59:45,174 INFO L82 PathProgramCache]: Analyzing trace with hash 1697119696, now seen corresponding path program 1 times [2020-10-29 06:59:45,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 06:59:45,179 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2013885045] [2020-10-29 06:59:45,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 06:59:45,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:45,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:45,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:46,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:47,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:47,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 327 [2020-10-29 06:59:47,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 06:59:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2684 [2020-10-29 06:59:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:47,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-29 06:59:47,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 06:59:47,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:48,192 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 06:59:48,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 06:59:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:48,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:48,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:48,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 06:59:48,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:48,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 06:59:48,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:48,206 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 06:59:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:48,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 06:59:48,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 06:59:48,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 06:59:48,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:48,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:48,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:48,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-29 06:59:48,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:48,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-29 06:59:48,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:48,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 06:59:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 06:59:48,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 06:59:48,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:48,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-29 06:59:48,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 06:59:48,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 06:59:48,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 06:59:48,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 06:59:48,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 06:59:48,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-29 06:59:48,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 06:59:48,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 06:59:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 06:59:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 06:59:48,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 06:59:48,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 06:59:49,071 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 178 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 06:59:49,071 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2013885045] [2020-10-29 06:59:49,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 06:59:49,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 06:59:49,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141882153] [2020-10-29 06:59:49,073 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 06:59:49,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 06:59:49,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 06:59:49,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 06:59:49,074 INFO L87 Difference]: Start difference. First operand 68003 states and 91152 transitions. Second operand 7 states. [2020-10-29 06:59:49,947 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:00:05,675 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 07:00:15,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 07:00:15,923 INFO L93 Difference]: Finished difference Result 138716 states and 186792 transitions. [2020-10-29 07:00:15,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 07:00:15,925 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 313 [2020-10-29 07:00:15,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 07:00:16,435 INFO L225 Difference]: With dead ends: 138716 [2020-10-29 07:00:16,436 INFO L226 Difference]: Without dead ends: 67411 [2020-10-29 07:00:16,680 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 07:00:16,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67411 states. [2020-10-29 07:00:18,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67411 to 64876. [2020-10-29 07:00:18,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64876 states. [2020-10-29 07:00:18,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64876 states to 64876 states and 78952 transitions. [2020-10-29 07:00:18,406 INFO L78 Accepts]: Start accepts. Automaton has 64876 states and 78952 transitions. Word has length 313 [2020-10-29 07:00:18,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 07:00:18,407 INFO L481 AbstractCegarLoop]: Abstraction has 64876 states and 78952 transitions. [2020-10-29 07:00:18,407 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 07:00:18,407 INFO L276 IsEmpty]: Start isEmpty. Operand 64876 states and 78952 transitions. [2020-10-29 07:00:18,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-29 07:00:18,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 07:00:18,427 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 07:00:18,427 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 07:00:18,427 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 07:00:18,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 07:00:18,428 INFO L82 PathProgramCache]: Analyzing trace with hash 1632439368, now seen corresponding path program 1 times [2020-10-29 07:00:18,428 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 07:00:18,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1448713304] [2020-10-29 07:00:18,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 07:00:18,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:18,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:19,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:19,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:23,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:23,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 400 [2020-10-29 07:00:23,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 07:00:23,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-29 07:00:23,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:23,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-29 07:00:23,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 180 [2020-10-29 07:00:23,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:24,107 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 07:00:24,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 07:00:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:24,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:24,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:24,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 07:00:24,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:24,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 07:00:24,122 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:24,123 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 07:00:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:24,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 07:00:24,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 07:00:24,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 07:00:24,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:24,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:24,358 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:24,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-29 07:00:24,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:24,359 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-10-29 07:00:24,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:24,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:24,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 07:00:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 07:00:24,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-29 07:00:24,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:24,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-29 07:00:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 07:00:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 07:00:24,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 07:00:24,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-29 07:00:24,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 07:00:24,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-29 07:00:24,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 07:00:24,868 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 07:00:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 07:00:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 07:00:24,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-10-29 07:00:24,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 07:00:25,138 INFO L134 CoverageAnalysis]: Checked inductivity of 254 backedges. 251 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 07:00:25,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1448713304] [2020-10-29 07:00:25,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 07:00:25,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 07:00:25,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556615513] [2020-10-29 07:00:25,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 07:00:25,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 07:00:25,141 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 07:00:25,141 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 07:00:25,141 INFO L87 Difference]: Start difference. First operand 64876 states and 78952 transitions. Second operand 7 states. [2020-10-29 07:00:26,773 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 07:00:31,536 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 71