/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/Problem17_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 08:14:32,021 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 08:14:32,025 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 08:14:32,071 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 08:14:32,071 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 08:14:32,073 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 08:14:32,075 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 08:14:32,079 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 08:14:32,081 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 08:14:32,082 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 08:14:32,084 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 08:14:32,086 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 08:14:32,087 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 08:14:32,089 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 08:14:32,090 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 08:14:32,092 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 08:14:32,094 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 08:14:32,096 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 08:14:32,098 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 08:14:32,101 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 08:14:32,104 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 08:14:32,110 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 08:14:32,112 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 08:14:32,114 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 08:14:32,132 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 08:14:32,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 08:14:32,133 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 08:14:32,135 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 08:14:32,135 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 08:14:32,137 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 08:14:32,137 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 08:14:32,139 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 08:14:32,140 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 08:14:32,142 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 08:14:32,144 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 08:14:32,144 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 08:14:32,145 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 08:14:32,146 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 08:14:32,146 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 08:14:32,149 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 08:14:32,150 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 08:14:32,152 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 08:14:32,188 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 08:14:32,188 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 08:14:32,190 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 08:14:32,191 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 08:14:32,191 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 08:14:32,191 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 08:14:32,192 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 08:14:32,192 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 08:14:32,192 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 08:14:32,192 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 08:14:32,193 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 08:14:32,193 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 08:14:32,193 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 08:14:32,193 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 08:14:32,194 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 08:14:32,194 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 08:14:32,194 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 08:14:32,194 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 08:14:32,194 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 08:14:32,195 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 08:14:32,195 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 08:14:32,195 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 08:14:32,195 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 08:14:32,196 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 08:14:32,196 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 08:14:32,196 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 08:14:32,196 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 08:14:32,197 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 08:14:32,197 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 08:14:32,197 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 08:14:32,664 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 08:14:32,701 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 08:14:32,705 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 08:14:32,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 08:14:32,709 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 08:14:32,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2020-10-29 08:14:32,832 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/293481d7f/5b388675b0894765a80e699df840d220/FLAGd0baed04c [2020-10-29 08:14:34,165 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 08:14:34,166 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem17_label17.c [2020-10-29 08:14:34,218 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/293481d7f/5b388675b0894765a80e699df840d220/FLAGd0baed04c [2020-10-29 08:14:34,585 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/293481d7f/5b388675b0894765a80e699df840d220 [2020-10-29 08:14:34,592 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 08:14:34,602 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 08:14:34,608 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 08:14:34,608 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 08:14:34,614 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 08:14:34,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:14:34" (1/1) ... [2020-10-29 08:14:34,623 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c76db6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:34, skipping insertion in model container [2020-10-29 08:14:34,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 08:14:34" (1/1) ... [2020-10-29 08:14:34,637 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 08:14:34,783 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 08:14:36,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:14:36,193 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 08:14:36,846 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 08:14:36,882 INFO L208 MainTranslator]: Completed translation [2020-10-29 08:14:36,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36 WrapperNode [2020-10-29 08:14:36,884 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 08:14:36,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 08:14:36,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 08:14:36,885 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 08:14:36,901 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36" (1/1) ... [2020-10-29 08:14:36,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36" (1/1) ... [2020-10-29 08:14:36,983 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36" (1/1) ... [2020-10-29 08:14:36,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36" (1/1) ... [2020-10-29 08:14:37,168 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36" (1/1) ... [2020-10-29 08:14:37,192 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36" (1/1) ... [2020-10-29 08:14:37,223 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36" (1/1) ... [2020-10-29 08:14:37,255 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 08:14:37,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 08:14:37,257 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 08:14:37,257 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 08:14:37,258 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36" (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 08:14:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 08:14:37,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 08:14:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 08:14:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-29 08:14:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-29 08:14:37,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 08:14:37,352 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-29 08:14:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-29 08:14:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 08:14:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 08:14:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 08:14:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 08:14:37,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-29 08:14:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 08:14:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 08:14:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 08:14:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 08:14:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 08:14:37,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 08:14:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 08:14:37,355 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 08:14:47,019 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 08:14:47,020 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 08:14:47,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:14:47 BoogieIcfgContainer [2020-10-29 08:14:47,023 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 08:14:47,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 08:14:47,025 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 08:14:47,028 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 08:14:47,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 08:14:34" (1/3) ... [2020-10-29 08:14:47,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b12100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:14:47, skipping insertion in model container [2020-10-29 08:14:47,030 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 08:14:36" (2/3) ... [2020-10-29 08:14:47,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30b12100 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 08:14:47, skipping insertion in model container [2020-10-29 08:14:47,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 08:14:47" (3/3) ... [2020-10-29 08:14:47,032 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem17_label17.c [2020-10-29 08:14:47,045 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 08:14:47,052 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 08:14:47,066 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 08:14:47,099 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 08:14:47,099 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 08:14:47,099 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 08:14:47,099 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 08:14:47,100 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 08:14:47,100 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 08:14:47,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 08:14:47,100 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 08:14:47,135 INFO L276 IsEmpty]: Start isEmpty. Operand 607 states. [2020-10-29 08:14:47,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-29 08:14:47,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:14:47,147 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] [2020-10-29 08:14:47,148 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:14:47,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:14:47,155 INFO L82 PathProgramCache]: Analyzing trace with hash -146325245, now seen corresponding path program 1 times [2020-10-29 08:14:47,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:14:47,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [585092130] [2020-10-29 08:14:47,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:14:47,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:47,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:48,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:48,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-10-29 08:14:48,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:48,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 703 [2020-10-29 08:14:48,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:48,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:48,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:14:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:14:48,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-29 08:14:48,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:14:48,308 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:14:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:14:48,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:14:48,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:14:48,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:14:48,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:14:48,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-29 08:14:48,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:14:48,354 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:14:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:14:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:14:48,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:14:48,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:14:48,383 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 08:14:48,384 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [585092130] [2020-10-29 08:14:48,388 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 08:14:48,388 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 08:14:48,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714170432] [2020-10-29 08:14:48,397 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 08:14:48,398 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:14:48,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 08:14:48,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 08:14:48,421 INFO L87 Difference]: Start difference. First operand 607 states. Second operand 4 states. [2020-10-29 08:15:03,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:03,317 INFO L93 Difference]: Finished difference Result 1698 states and 3099 transitions. [2020-10-29 08:15:03,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:15:03,320 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-10-29 08:15:03,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:03,349 INFO L225 Difference]: With dead ends: 1698 [2020-10-29 08:15:03,350 INFO L226 Difference]: Without dead ends: 1012 [2020-10-29 08:15:03,364 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 2 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 08:15:03,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1012 states. [2020-10-29 08:15:03,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1012 to 987. [2020-10-29 08:15:03,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 987 states. [2020-10-29 08:15:03,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 987 states to 987 states and 1579 transitions. [2020-10-29 08:15:03,515 INFO L78 Accepts]: Start accepts. Automaton has 987 states and 1579 transitions. Word has length 45 [2020-10-29 08:15:03,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:03,516 INFO L481 AbstractCegarLoop]: Abstraction has 987 states and 1579 transitions. [2020-10-29 08:15:03,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 08:15:03,517 INFO L276 IsEmpty]: Start isEmpty. Operand 987 states and 1579 transitions. [2020-10-29 08:15:03,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-29 08:15:03,526 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:03,528 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:03,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 08:15:03,529 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:03,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:03,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1292671230, now seen corresponding path program 1 times [2020-10-29 08:15:03,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:03,533 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2008234075] [2020-10-29 08:15:03,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:03,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:03,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:04,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:05,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:05,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:05,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-29 08:15:05,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:15:05,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2061 [2020-10-29 08:15:05,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:05,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 08:15:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:05,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-29 08:15:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 08:15:05,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:05,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:05,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:05,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:05,907 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:05,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:05,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-29 08:15:05,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:05,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:05,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:05,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:05,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:05,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:05,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:05,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:06,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:06,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:06,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-29 08:15:06,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:06,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 384 [2020-10-29 08:15:06,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:06,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:06,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:06,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-29 08:15:06,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:06,477 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 0 proven. 34 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-29 08:15:06,477 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2008234075] [2020-10-29 08:15:06,478 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:06,478 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:15:06,478 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766937518] [2020-10-29 08:15:06,481 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:15:06,482 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:06,488 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:15:06,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:15:06,490 INFO L87 Difference]: Start difference. First operand 987 states and 1579 transitions. Second operand 7 states. [2020-10-29 08:15:24,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:24,516 INFO L93 Difference]: Finished difference Result 2487 states and 4078 transitions. [2020-10-29 08:15:24,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:15:24,518 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 114 [2020-10-29 08:15:24,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:24,531 INFO L225 Difference]: With dead ends: 2487 [2020-10-29 08:15:24,532 INFO L226 Difference]: Without dead ends: 1506 [2020-10-29 08:15:24,537 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:15:24,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2020-10-29 08:15:24,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1460. [2020-10-29 08:15:24,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1460 states. [2020-10-29 08:15:24,623 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1460 states to 1460 states and 2054 transitions. [2020-10-29 08:15:24,623 INFO L78 Accepts]: Start accepts. Automaton has 1460 states and 2054 transitions. Word has length 114 [2020-10-29 08:15:24,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:24,626 INFO L481 AbstractCegarLoop]: Abstraction has 1460 states and 2054 transitions. [2020-10-29 08:15:24,626 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:15:24,626 INFO L276 IsEmpty]: Start isEmpty. Operand 1460 states and 2054 transitions. [2020-10-29 08:15:24,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-29 08:15:24,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:24,640 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:24,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 08:15:24,640 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:24,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:24,642 INFO L82 PathProgramCache]: Analyzing trace with hash 173715735, now seen corresponding path program 1 times [2020-10-29 08:15:24,643 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:24,643 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [44033131] [2020-10-29 08:15:24,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:24,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:24,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:25,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:25,871 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:25,872 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-29 08:15:25,872 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:15:25,872 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1158 [2020-10-29 08:15:25,872 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:25,873 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 08:15:25,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:15:25,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-29 08:15:25,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:26,179 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:15:26,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:26,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:26,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:26,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:26,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:26,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:26,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-29 08:15:26,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:26,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:26,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:26,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:15:26,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:26,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:26,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:26,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:26,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:26,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-29 08:15:26,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:26,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-10-29 08:15:26,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:26,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:26,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:15:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:15:26,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-29 08:15:26,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:26,847 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 28 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:15:26,848 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [44033131] [2020-10-29 08:15:26,848 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:26,848 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:15:26,849 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039309577] [2020-10-29 08:15:26,851 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:15:26,851 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:26,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:15:26,853 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:15:26,854 INFO L87 Difference]: Start difference. First operand 1460 states and 2054 transitions. Second operand 7 states. [2020-10-29 08:15:27,018 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 76 [2020-10-29 08:15:27,747 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2020-10-29 08:15:46,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:15:46,636 INFO L93 Difference]: Finished difference Result 2956 states and 4153 transitions. [2020-10-29 08:15:46,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-29 08:15:46,646 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-29 08:15:46,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:15:46,658 INFO L225 Difference]: With dead ends: 2956 [2020-10-29 08:15:46,659 INFO L226 Difference]: Without dead ends: 1468 [2020-10-29 08:15:46,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-10-29 08:15:46,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1468 states. [2020-10-29 08:15:46,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1468 to 1457. [2020-10-29 08:15:46,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1457 states. [2020-10-29 08:15:46,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1457 states to 1457 states and 2004 transitions. [2020-10-29 08:15:46,730 INFO L78 Accepts]: Start accepts. Automaton has 1457 states and 2004 transitions. Word has length 119 [2020-10-29 08:15:46,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:15:46,736 INFO L481 AbstractCegarLoop]: Abstraction has 1457 states and 2004 transitions. [2020-10-29 08:15:46,737 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:15:46,737 INFO L276 IsEmpty]: Start isEmpty. Operand 1457 states and 2004 transitions. [2020-10-29 08:15:46,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2020-10-29 08:15:46,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:15:46,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 08:15:46,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 08:15:46,747 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:15:46,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:15:46,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1897882942, now seen corresponding path program 1 times [2020-10-29 08:15:46,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:15:46,749 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [108846180] [2020-10-29 08:15:46,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:15:46,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:46,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:47,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:47,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-10-29 08:15:47,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:47,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 355 [2020-10-29 08:15:47,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:47,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:47,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:15:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:15:47,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-29 08:15:47,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:15:47,332 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:15:47,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:15:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:47,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:47,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:47,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:15:47,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:47,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 08:15:47,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:47,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:47,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:15:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:47,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:15:47,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:15:47,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:15:47,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:15:47,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:15:47,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:15:47,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:15:47,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:15:47,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-29 08:15:47,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:15:47,553 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:15:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:15:47,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:15:47,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:15:47,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-29 08:15:47,635 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 36 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 08:15:47,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [108846180] [2020-10-29 08:15:47,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:15:47,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-29 08:15:47,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3407244] [2020-10-29 08:15:47,638 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-29 08:15:47,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:15:47,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-29 08:15:47,652 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-29 08:15:47,652 INFO L87 Difference]: Start difference. First operand 1457 states and 2004 transitions. Second operand 5 states. [2020-10-29 08:16:04,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:04,400 INFO L93 Difference]: Finished difference Result 3389 states and 5008 transitions. [2020-10-29 08:16:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:16:04,402 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 132 [2020-10-29 08:16:04,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:04,417 INFO L225 Difference]: With dead ends: 3389 [2020-10-29 08:16:04,417 INFO L226 Difference]: Without dead ends: 2371 [2020-10-29 08:16:04,421 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 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 08:16:04,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2371 states. [2020-10-29 08:16:04,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2371 to 2365. [2020-10-29 08:16:04,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2365 states. [2020-10-29 08:16:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2365 states to 2365 states and 3200 transitions. [2020-10-29 08:16:04,492 INFO L78 Accepts]: Start accepts. Automaton has 2365 states and 3200 transitions. Word has length 132 [2020-10-29 08:16:04,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:04,493 INFO L481 AbstractCegarLoop]: Abstraction has 2365 states and 3200 transitions. [2020-10-29 08:16:04,493 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-29 08:16:04,493 INFO L276 IsEmpty]: Start isEmpty. Operand 2365 states and 3200 transitions. [2020-10-29 08:16:04,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-10-29 08:16:04,496 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:04,496 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-29 08:16:04,497 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 08:16:04,497 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:04,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:04,497 INFO L82 PathProgramCache]: Analyzing trace with hash 183400323, now seen corresponding path program 1 times [2020-10-29 08:16:04,498 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:04,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2111216207] [2020-10-29 08:16:04,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:04,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:04,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:04,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:04,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:07,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:07,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 217 [2020-10-29 08:16:07,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:16:07,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2878 [2020-10-29 08:16:07,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:07,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 08:16:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:16:07,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 208 [2020-10-29 08:16:07,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:07,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:07,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:07,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:07,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:07,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:07,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:07,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 08:16:07,652 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:07,652 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:07,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:16:07,653 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:07,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:07,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:07,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:07,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:07,971 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:07,971 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:07,971 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 257 [2020-10-29 08:16:07,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:07,972 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:16:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:07,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:16:07,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:08,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:08,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:08,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:08,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:16:08,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:08,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 08:16:08,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:08,287 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:08,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:16:08,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-29 08:16:08,449 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 140 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 08:16:08,450 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2111216207] [2020-10-29 08:16:08,450 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:08,450 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:16:08,450 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279626926] [2020-10-29 08:16:08,451 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:16:08,451 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:08,452 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:16:08,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:16:08,452 INFO L87 Difference]: Start difference. First operand 2365 states and 3200 transitions. Second operand 9 states. [2020-10-29 08:16:13,224 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 72 DAG size of output: 67 [2020-10-29 08:16:31,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:31,963 INFO L93 Difference]: Finished difference Result 6292 states and 9098 transitions. [2020-10-29 08:16:31,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-29 08:16:31,965 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 203 [2020-10-29 08:16:31,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:31,997 INFO L225 Difference]: With dead ends: 6292 [2020-10-29 08:16:31,998 INFO L226 Difference]: Without dead ends: 4366 [2020-10-29 08:16:32,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-29 08:16:32,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4366 states. [2020-10-29 08:16:32,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4366 to 4243. [2020-10-29 08:16:32,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4243 states. [2020-10-29 08:16:32,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4243 states to 4243 states and 5418 transitions. [2020-10-29 08:16:32,174 INFO L78 Accepts]: Start accepts. Automaton has 4243 states and 5418 transitions. Word has length 203 [2020-10-29 08:16:32,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:32,176 INFO L481 AbstractCegarLoop]: Abstraction has 4243 states and 5418 transitions. [2020-10-29 08:16:32,176 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:16:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 4243 states and 5418 transitions. [2020-10-29 08:16:32,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 219 [2020-10-29 08:16:32,180 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:32,181 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:16:32,181 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 08:16:32,181 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:32,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:32,182 INFO L82 PathProgramCache]: Analyzing trace with hash -1496622443, now seen corresponding path program 1 times [2020-10-29 08:16:32,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:32,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888531573] [2020-10-29 08:16:32,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:32,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:32,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:32,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:32,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:37,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:37,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 232 [2020-10-29 08:16:37,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 08:16:37,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-29 08:16:37,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:37,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:16:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:16:37,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-29 08:16:37,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:37,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:37,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:37,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:37,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:37,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:37,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:37,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:16:37,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:37,479 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:16:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:37,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:16:37,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:37,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:37,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:37,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:37,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:37,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:37,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:37,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-29 08:16:37,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:37,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:16:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:37,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:37,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:37,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:37,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:37,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:16:37,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:16:37,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-10-29 08:16:37,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:37,981 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:37,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:37,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:37,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:16:37,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:16:38,068 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 72 proven. 2 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-10-29 08:16:38,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888531573] [2020-10-29 08:16:38,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:38,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-29 08:16:38,071 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1850571797] [2020-10-29 08:16:38,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-29 08:16:38,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:38,074 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-29 08:16:38,074 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-29 08:16:38,074 INFO L87 Difference]: Start difference. First operand 4243 states and 5418 transitions. Second operand 6 states. [2020-10-29 08:16:53,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:16:53,829 INFO L93 Difference]: Finished difference Result 9415 states and 12545 transitions. [2020-10-29 08:16:53,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-29 08:16:53,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 218 [2020-10-29 08:16:53,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:16:53,863 INFO L225 Difference]: With dead ends: 9415 [2020-10-29 08:16:53,863 INFO L226 Difference]: Without dead ends: 5611 [2020-10-29 08:16:53,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:16:53,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5611 states. [2020-10-29 08:16:54,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5611 to 5147. [2020-10-29 08:16:54,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5147 states. [2020-10-29 08:16:54,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5147 states to 5147 states and 6904 transitions. [2020-10-29 08:16:54,020 INFO L78 Accepts]: Start accepts. Automaton has 5147 states and 6904 transitions. Word has length 218 [2020-10-29 08:16:54,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:16:54,021 INFO L481 AbstractCegarLoop]: Abstraction has 5147 states and 6904 transitions. [2020-10-29 08:16:54,021 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-29 08:16:54,022 INFO L276 IsEmpty]: Start isEmpty. Operand 5147 states and 6904 transitions. [2020-10-29 08:16:54,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 281 [2020-10-29 08:16:54,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:16:54,028 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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 08:16:54,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-29 08:16:54,028 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:16:54,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:16:54,029 INFO L82 PathProgramCache]: Analyzing trace with hash 1393276686, now seen corresponding path program 1 times [2020-10-29 08:16:54,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:16:54,030 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143528719] [2020-10-29 08:16:54,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:16:54,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:54,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:54,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:54,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:56,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:57,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:59,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:59,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 296 [2020-10-29 08:16:59,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-29 08:16:59,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-29 08:16:59,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:59,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:16:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-29 08:16:59,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:59,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:16:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:59,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:59,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:59,254 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:16:59,254 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:59,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-29 08:16:59,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:59,255 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:16:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:59,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:16:59,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:59,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:16:59,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:59,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:59,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:59,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:16:59,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:59,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-29 08:16:59,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:59,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:16:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:16:59,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:16:59,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:59,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:16:59,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:59,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:59,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:59,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:16:59,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:59,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-29 08:16:59,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:59,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:16:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:16:59,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:16:59,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:59,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-29 08:16:59,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:16:59,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:16:59,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:16:59,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:16:59,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:16:59,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-29 08:16:59,707 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:16:59,707 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:16:59,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:16:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-10-29 08:16:59,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:16:59,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:16:59,819 INFO L134 CoverageAnalysis]: Checked inductivity of 330 backedges. 183 proven. 70 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-10-29 08:16:59,820 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143528719] [2020-10-29 08:16:59,820 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:16:59,820 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:16:59,821 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550733110] [2020-10-29 08:16:59,821 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:16:59,822 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:16:59,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:16:59,823 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:16:59,824 INFO L87 Difference]: Start difference. First operand 5147 states and 6904 transitions. Second operand 7 states. [2020-10-29 08:17:29,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:17:29,397 INFO L93 Difference]: Finished difference Result 12294 states and 17492 transitions. [2020-10-29 08:17:29,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 08:17:29,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 280 [2020-10-29 08:17:29,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:17:29,441 INFO L225 Difference]: With dead ends: 12294 [2020-10-29 08:17:29,441 INFO L226 Difference]: Without dead ends: 7586 [2020-10-29 08:17:29,455 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-29 08:17:29,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7586 states. [2020-10-29 08:17:29,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7586 to 7518. [2020-10-29 08:17:29,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7518 states. [2020-10-29 08:17:29,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7518 states to 7518 states and 10012 transitions. [2020-10-29 08:17:29,687 INFO L78 Accepts]: Start accepts. Automaton has 7518 states and 10012 transitions. Word has length 280 [2020-10-29 08:17:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:17:29,688 INFO L481 AbstractCegarLoop]: Abstraction has 7518 states and 10012 transitions. [2020-10-29 08:17:29,688 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 08:17:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 7518 states and 10012 transitions. [2020-10-29 08:17:29,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 290 [2020-10-29 08:17:29,694 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:17:29,695 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:17:29,695 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-29 08:17:29,695 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:17:29,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:17:29,697 INFO L82 PathProgramCache]: Analyzing trace with hash -2008421296, now seen corresponding path program 1 times [2020-10-29 08:17:29,697 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:17:29,697 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [822492082] [2020-10-29 08:17:29,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:17:29,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:29,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:29,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:30,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:31,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:33,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:33,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 305 [2020-10-29 08:17:33,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:17:33,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4081 [2020-10-29 08:17:33,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:33,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-29 08:17:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-29 08:17:33,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 296 [2020-10-29 08:17:33,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:34,142 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:17:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:17:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:34,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:34,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:34,163 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:17:34,163 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:34,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-29 08:17:34,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:34,164 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:17:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:17:34,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 08:17:34,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:34,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:17:34,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:34,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:34,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:34,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:17:34,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:34,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 08:17:34,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:34,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 08:17:34,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:34,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-10-29 08:17:34,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:34,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:17:34,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:34,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:34,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:17:34,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:34,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-10-29 08:17:34,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:34,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:34,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-29 08:17:34,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:34,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:17:34,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:17:34,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:17:34,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:17:34,863 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-29 08:17:34,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:17:34,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-29 08:17:34,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:17:34,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:17:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:17:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:17:34,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-29 08:17:34,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:17:35,072 INFO L134 CoverageAnalysis]: Checked inductivity of 339 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-29 08:17:35,072 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [822492082] [2020-10-29 08:17:35,073 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:17:35,073 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-29 08:17:35,073 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243915362] [2020-10-29 08:17:35,075 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 08:17:35,075 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:17:35,076 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 08:17:35,077 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-10-29 08:17:35,077 INFO L87 Difference]: Start difference. First operand 7518 states and 10012 transitions. Second operand 9 states. [2020-10-29 08:17:35,303 WARN L193 SmtUtils]: Spent 141.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-29 08:17:36,511 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-29 08:18:11,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 08:18:11,241 INFO L93 Difference]: Finished difference Result 18504 states and 28510 transitions. [2020-10-29 08:18:11,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-29 08:18:11,247 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 289 [2020-10-29 08:18:11,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 08:18:11,338 INFO L225 Difference]: With dead ends: 18504 [2020-10-29 08:18:11,339 INFO L226 Difference]: Without dead ends: 11425 [2020-10-29 08:18:11,371 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=56, Invalid=154, Unknown=0, NotChecked=0, Total=210 [2020-10-29 08:18:11,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11425 states. [2020-10-29 08:18:11,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11425 to 10242. [2020-10-29 08:18:11,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10242 states. [2020-10-29 08:18:11,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 13260 transitions. [2020-10-29 08:18:11,835 INFO L78 Accepts]: Start accepts. Automaton has 10242 states and 13260 transitions. Word has length 289 [2020-10-29 08:18:11,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 08:18:11,836 INFO L481 AbstractCegarLoop]: Abstraction has 10242 states and 13260 transitions. [2020-10-29 08:18:11,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 08:18:11,836 INFO L276 IsEmpty]: Start isEmpty. Operand 10242 states and 13260 transitions. [2020-10-29 08:18:11,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 296 [2020-10-29 08:18:11,843 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 08:18:11,843 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 08:18:11,844 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-29 08:18:11,844 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 08:18:11,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 08:18:11,845 INFO L82 PathProgramCache]: Analyzing trace with hash -1440255684, now seen corresponding path program 1 times [2020-10-29 08:18:11,845 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 08:18:11,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [467567044] [2020-10-29 08:18:11,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 08:18:11,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:11,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:12,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:13,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:13,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:16,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:16,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-29 08:18:16,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-29 08:18:16,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4151 [2020-10-29 08:18:16,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:16,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:16,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 08:18:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-29 08:18:16,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 168 [2020-10-29 08:18:16,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 08:18:16,320 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 08:18:16,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 08:18:16,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:16,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:16,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:16,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 08:18:16,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:16,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 08:18:16,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:16,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:16,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 08:18:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:16,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 08:18:16,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:16,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-29 08:18:16,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:16,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:16,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:16,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-29 08:18:16,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:16,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-29 08:18:16,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:16,630 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:16,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-29 08:18:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:16,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-29 08:18:16,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:16,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:17,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:17,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-29 08:18:17,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 08:18:17,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-29 08:18:17,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:17,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 08:18:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 08:18:17,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-29 08:18:17,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:17,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2020-10-29 08:18:17,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 08:18:17,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 08:18:17,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 08:18:17,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-29 08:18:17,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 08:18:17,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-29 08:18:17,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 08:18:17,204 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 08:18:17,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 08:18:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 08:18:17,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-29 08:18:17,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 08:18:17,401 INFO L134 CoverageAnalysis]: Checked inductivity of 351 backedges. 259 proven. 4 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2020-10-29 08:18:17,405 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [467567044] [2020-10-29 08:18:17,406 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 08:18:17,406 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-29 08:18:17,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763026226] [2020-10-29 08:18:17,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 08:18:17,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 08:18:17,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 08:18:17,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-29 08:18:17,409 INFO L87 Difference]: Start difference. First operand 10242 states and 13260 transitions. Second operand 7 states. [2020-10-29 08:18:18,542 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 66