/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=SHALLOWEST --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/Problem04_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:06:28,205 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:06:28,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:06:28,268 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:06:28,268 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:06:28,275 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:06:28,277 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:06:28,282 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:06:28,285 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:06:28,291 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:06:28,292 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:06:28,294 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:06:28,294 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:06:28,298 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:06:28,301 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:06:28,305 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:06:28,307 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:06:28,310 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:06:28,317 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:06:28,325 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:06:28,327 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:06:28,328 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:06:28,330 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:06:28,332 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:06:28,341 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:06:28,341 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:06:28,341 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:06:28,344 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:06:28,344 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:06:28,345 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:06:28,346 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:06:28,347 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:06:28,349 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:06:28,349 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:06:28,350 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:06:28,351 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:06:28,351 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:06:28,351 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:06:28,352 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:06:28,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:06:28,360 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:06:28,367 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 [2020-10-26 21:06:28,415 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:06:28,416 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:06:28,420 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:06:28,420 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:06:28,420 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:06:28,420 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:06:28,421 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:06:28,421 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:06:28,421 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:06:28,421 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:06:28,422 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:06:28,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:06:28,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:06:28,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:06:28,423 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:06:28,423 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:06:28,423 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:06:28,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:06:28,424 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:06:28,424 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:06:28,424 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:06:28,424 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:06:28,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:06:28,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:06:28,425 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:06:28,425 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:06:28,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:06:28,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:06:28,426 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:06:28,426 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:06:28,858 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:06:28,883 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:06:28,886 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:06:28,887 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:06:28,888 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:06:28,889 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label48.c [2020-10-26 21:06:28,958 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50b8b97f1/7cf798eb4a764b2aa07c6bc10f81c014/FLAGd32abee4c [2020-10-26 21:06:29,907 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:06:29,908 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label48.c [2020-10-26 21:06:29,953 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50b8b97f1/7cf798eb4a764b2aa07c6bc10f81c014/FLAGd32abee4c [2020-10-26 21:06:30,410 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/50b8b97f1/7cf798eb4a764b2aa07c6bc10f81c014 [2020-10-26 21:06:30,414 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:06:30,421 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:06:30,423 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:06:30,423 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:06:30,427 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:06:30,428 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:06:30" (1/1) ... [2020-10-26 21:06:30,431 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71d8493 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:30, skipping insertion in model container [2020-10-26 21:06:30,432 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:06:30" (1/1) ... [2020-10-26 21:06:30,440 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:06:30,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:06:31,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:06:31,941 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:06:32,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:06:32,720 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:06:32,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32 WrapperNode [2020-10-26 21:06:32,720 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:06:32,722 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:06:32,722 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:06:32,722 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:06:32,735 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32" (1/1) ... [2020-10-26 21:06:32,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32" (1/1) ... [2020-10-26 21:06:32,812 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32" (1/1) ... [2020-10-26 21:06:32,812 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32" (1/1) ... [2020-10-26 21:06:32,961 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32" (1/1) ... [2020-10-26 21:06:33,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32" (1/1) ... [2020-10-26 21:06:33,036 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32" (1/1) ... [2020-10-26 21:06:33,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:06:33,080 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:06:33,080 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:06:33,081 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:06:33,082 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32" (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 [2020-10-26 21:06:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:06:33,176 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:06:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:06:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:06:33,177 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:06:33,178 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:06:33,178 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:06:33,179 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:06:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:06:33,179 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:06:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:06:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:06:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:06:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:06:33,181 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:06:33,182 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:06:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:06:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:06:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:06:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:06:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:06:33,183 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:06:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:06:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:06:33,184 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:06:38,608 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:06:38,609 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:06:38,613 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:06:38 BoogieIcfgContainer [2020-10-26 21:06:38,613 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:06:38,615 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:06:38,615 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:06:38,619 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:06:38,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:06:30" (1/3) ... [2020-10-26 21:06:38,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd699c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:06:38, skipping insertion in model container [2020-10-26 21:06:38,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:06:32" (2/3) ... [2020-10-26 21:06:38,621 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@dd699c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:06:38, skipping insertion in model container [2020-10-26 21:06:38,621 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:06:38" (3/3) ... [2020-10-26 21:06:38,623 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label48.c [2020-10-26 21:06:38,635 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:06:38,641 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:06:38,655 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:06:38,691 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:06:38,691 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:06:38,691 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:06:38,691 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:06:38,692 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:06:38,692 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:06:38,692 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:06:38,692 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:06:38,730 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-26 21:06:38,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 820 [2020-10-26 21:06:38,798 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:06:38,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:06:38,800 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:06:38,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:06:38,808 INFO L82 PathProgramCache]: Analyzing trace with hash -547915752, now seen corresponding path program 1 times [2020-10-26 21:06:38,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:06:38,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [200821233] [2020-10-26 21:06:38,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:06:39,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:39,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:41,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:44,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:44,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 835 [2020-10-26 21:06:44,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:06:44,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5094 [2020-10-26 21:06:44,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-26 21:06:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:06:44,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 742 [2020-10-26 21:06:44,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-26 21:06:47,522 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:06:47,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:06:47,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:06:47,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:06:47,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:06:47,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:06:47,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:06:47,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:06:47,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:06:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:06:47,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:06:47,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:06:47,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:06:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:06:52,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [200821233] [2020-10-26 21:06:52,773 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:06:52,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-26 21:06:52,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738573520] [2020-10-26 21:06:52,789 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-26 21:06:52,789 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:06:52,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-26 21:06:52,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-26 21:06:52,807 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 18 states. [2020-10-26 21:06:53,060 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification that was a NOOP. DAG size: 104 [2020-10-26 21:06:53,303 WARN L193 SmtUtils]: Spent 147.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-26 21:06:53,529 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 117 [2020-10-26 21:06:53,775 WARN L193 SmtUtils]: Spent 177.00 ms on a formula simplification that was a NOOP. DAG size: 125 [2020-10-26 21:06:54,235 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification that was a NOOP. DAG size: 124 [2020-10-26 21:06:54,603 WARN L193 SmtUtils]: Spent 181.00 ms on a formula simplification that was a NOOP. DAG size: 123 [2020-10-26 21:06:57,457 WARN L193 SmtUtils]: Spent 170.00 ms on a formula simplification that was a NOOP. DAG size: 122 [2020-10-26 21:06:58,005 WARN L193 SmtUtils]: Spent 403.00 ms on a formula simplification. DAG size of input: 123 DAG size of output: 123 [2020-10-26 21:07:00,591 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 111 [2020-10-26 21:07:00,987 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 117 DAG size of output: 115 [2020-10-26 21:07:02,577 WARN L193 SmtUtils]: Spent 365.00 ms on a formula simplification. DAG size of input: 113 DAG size of output: 113 [2020-10-26 21:07:07,304 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-26 21:07:07,521 WARN L193 SmtUtils]: Spent 163.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-26 21:07:13,687 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-26 21:07:13,894 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification that was a NOOP. DAG size: 109 [2020-10-26 21:07:17,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:17,488 INFO L93 Difference]: Finished difference Result 2553 states and 4911 transitions. [2020-10-26 21:07:17,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-26 21:07:17,492 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 819 [2020-10-26 21:07:17,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:17,538 INFO L225 Difference]: With dead ends: 2553 [2020-10-26 21:07:17,539 INFO L226 Difference]: Without dead ends: 1581 [2020-10-26 21:07:17,552 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 190 ImplicationChecksByTransitivity, 4.7s TimeCoverageRelationStatistics Valid=186, Invalid=870, Unknown=0, NotChecked=0, Total=1056 [2020-10-26 21:07:17,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1581 states. [2020-10-26 21:07:17,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1581 to 1581. [2020-10-26 21:07:17,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-10-26 21:07:17,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2340 transitions. [2020-10-26 21:07:17,713 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2340 transitions. Word has length 819 [2020-10-26 21:07:17,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:17,716 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2340 transitions. [2020-10-26 21:07:17,716 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-26 21:07:17,716 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2340 transitions. [2020-10-26 21:07:17,753 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 839 [2020-10-26 21:07:17,754 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:17,755 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:17,755 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:07:17,755 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:17,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:17,757 INFO L82 PathProgramCache]: Analyzing trace with hash 1767942087, now seen corresponding path program 1 times [2020-10-26 21:07:17,757 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:17,757 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522993507] [2020-10-26 21:07:17,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:18,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:18,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:19,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:22,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:23,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:23,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 856 [2020-10-26 21:07:23,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:07:23,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-26 21:07:23,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 21:07:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:23,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 847 [2020-10-26 21:07:23,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:23,871 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:07:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:23,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:23,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:23,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:23,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:23,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:23,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 21:07:23,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:23,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:23,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:23,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:07:23,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:23,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:23,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:23,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:24,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:24,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:07:24,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:07:24,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-10-26 21:07:24,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:24,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:07:24,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:07:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 21:07:25,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522993507] [2020-10-26 21:07:25,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:25,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:07:25,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061089976] [2020-10-26 21:07:25,070 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 21:07:25,071 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:25,071 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 21:07:25,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:07:25,072 INFO L87 Difference]: Start difference. First operand 1581 states and 2340 transitions. Second operand 6 states. [2020-10-26 21:07:25,211 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:07:37,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:37,667 INFO L93 Difference]: Finished difference Result 3300 states and 5584 transitions. [2020-10-26 21:07:37,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 21:07:37,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 838 [2020-10-26 21:07:37,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:37,685 INFO L225 Difference]: With dead ends: 3300 [2020-10-26 21:07:37,685 INFO L226 Difference]: Without dead ends: 2452 [2020-10-26 21:07:37,689 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:07:37,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2452 states. [2020-10-26 21:07:37,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2452 to 2437. [2020-10-26 21:07:37,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2437 states. [2020-10-26 21:07:37,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2437 states to 2437 states and 3501 transitions. [2020-10-26 21:07:37,784 INFO L78 Accepts]: Start accepts. Automaton has 2437 states and 3501 transitions. Word has length 838 [2020-10-26 21:07:37,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:37,786 INFO L481 AbstractCegarLoop]: Abstraction has 2437 states and 3501 transitions. [2020-10-26 21:07:37,786 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 21:07:37,786 INFO L276 IsEmpty]: Start isEmpty. Operand 2437 states and 3501 transitions. [2020-10-26 21:07:37,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 854 [2020-10-26 21:07:37,800 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:37,801 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:37,801 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:07:37,801 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:37,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:37,802 INFO L82 PathProgramCache]: Analyzing trace with hash -1745372560, now seen corresponding path program 1 times [2020-10-26 21:07:37,803 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:37,803 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [504741] [2020-10-26 21:07:37,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:37,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:38,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:40,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:43,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 873 [2020-10-26 21:07:43,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:07:43,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-26 21:07:43,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:07:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:07:43,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-26 21:07:43,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:43,287 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:07:43,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:07:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:43,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:43,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:07:43,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:07:43,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:07:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:07:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:07:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:43,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:07:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:43,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:43,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:07:43,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:07:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 21:07:43,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:43,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:07:43,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:07:43,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:07:43,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:43,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:43,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:07:43,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:07:43,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:07:43,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-26 21:07:43,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:07:43,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:07:43,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:07:43,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:07:43,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-26 21:07:44,099 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 37 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:07:44,100 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [504741] [2020-10-26 21:07:44,100 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:07:44,100 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:07:44,101 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1250693445] [2020-10-26 21:07:44,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:07:44,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:07:44,103 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:07:44,103 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:07:44,103 INFO L87 Difference]: Start difference. First operand 2437 states and 3501 transitions. Second operand 8 states. [2020-10-26 21:07:44,244 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:07:47,301 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:07:59,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:07:59,191 INFO L93 Difference]: Finished difference Result 5978 states and 9256 transitions. [2020-10-26 21:07:59,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:07:59,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 853 [2020-10-26 21:07:59,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:07:59,214 INFO L225 Difference]: With dead ends: 5978 [2020-10-26 21:07:59,214 INFO L226 Difference]: Without dead ends: 4274 [2020-10-26 21:07:59,219 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:07:59,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4274 states. [2020-10-26 21:07:59,356 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4274 to 4217. [2020-10-26 21:07:59,356 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4217 states. [2020-10-26 21:07:59,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4217 states to 4217 states and 5747 transitions. [2020-10-26 21:07:59,371 INFO L78 Accepts]: Start accepts. Automaton has 4217 states and 5747 transitions. Word has length 853 [2020-10-26 21:07:59,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:07:59,372 INFO L481 AbstractCegarLoop]: Abstraction has 4217 states and 5747 transitions. [2020-10-26 21:07:59,372 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:07:59,372 INFO L276 IsEmpty]: Start isEmpty. Operand 4217 states and 5747 transitions. [2020-10-26 21:07:59,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 904 [2020-10-26 21:07:59,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:07:59,391 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:07:59,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:07:59,391 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:07:59,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:07:59,392 INFO L82 PathProgramCache]: Analyzing trace with hash 297981086, now seen corresponding path program 1 times [2020-10-26 21:07:59,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:07:59,393 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [183268401] [2020-10-26 21:07:59,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:07:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:07:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:07:59,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:00,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:04,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:04,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 925 [2020-10-26 21:08:04,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:08:04,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5046 [2020-10-26 21:08:04,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:08:04,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:08:04,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 21:08:04,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:04,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:04,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:04,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:04,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:04,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:04,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:08:04,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:04,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:08:04,826 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:04,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:04,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:04,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:04,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:08:04,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:08:04,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 21:08:04,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:04,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:04,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:08:04,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:04,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:08:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:04,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:05,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:05,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:08:05,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:05,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-26 21:08:05,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:05,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:05,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:05,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 21:08:05,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:05,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2020-10-26 21:08:05,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:05,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:05,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:05,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:08:05,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:05,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-26 21:08:05,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 21:08:05,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:05,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 124 backedges. 92 proven. 22 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 21:08:05,542 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [183268401] [2020-10-26 21:08:05,542 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:05,542 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:08:05,543 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94435544] [2020-10-26 21:08:05,544 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:08:05,544 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:05,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:08:05,545 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:08:05,545 INFO L87 Difference]: Start difference. First operand 4217 states and 5747 transitions. Second operand 8 states. [2020-10-26 21:08:05,686 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:08:20,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:20,386 INFO L93 Difference]: Finished difference Result 11390 states and 16454 transitions. [2020-10-26 21:08:20,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:08:20,388 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 903 [2020-10-26 21:08:20,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:20,431 INFO L225 Difference]: With dead ends: 11390 [2020-10-26 21:08:20,431 INFO L226 Difference]: Without dead ends: 7906 [2020-10-26 21:08:20,441 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:08:20,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7906 states. [2020-10-26 21:08:20,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7906 to 7776. [2020-10-26 21:08:20,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7776 states. [2020-10-26 21:08:20,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7776 states to 7776 states and 10337 transitions. [2020-10-26 21:08:20,761 INFO L78 Accepts]: Start accepts. Automaton has 7776 states and 10337 transitions. Word has length 903 [2020-10-26 21:08:20,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:20,762 INFO L481 AbstractCegarLoop]: Abstraction has 7776 states and 10337 transitions. [2020-10-26 21:08:20,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:08:20,762 INFO L276 IsEmpty]: Start isEmpty. Operand 7776 states and 10337 transitions. [2020-10-26 21:08:20,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 912 [2020-10-26 21:08:20,792 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:20,793 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:08:20,793 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:08:20,794 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:20,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:20,797 INFO L82 PathProgramCache]: Analyzing trace with hash 448265476, now seen corresponding path program 1 times [2020-10-26 21:08:20,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:20,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1355891921] [2020-10-26 21:08:20,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:20,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:20,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:21,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:22,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:25,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:26,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:26,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 931 [2020-10-26 21:08:26,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 21:08:26,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5154 [2020-10-26 21:08:26,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-26 21:08:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:08:26,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 922 [2020-10-26 21:08:26,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:26,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:26,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:26,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:26,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:26,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:26,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:26,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:08:26,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:26,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:08:26,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:26,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:26,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:26,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:26,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:26,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:26,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:08:26,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:08:26,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 21:08:26,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:08:26,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:26,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:08:26,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:26,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:26,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:26,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:08:26,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:08:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-26 21:08:26,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:26,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:08:26,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:28,045 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 78 proven. 2 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-10-26 21:08:28,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1355891921] [2020-10-26 21:08:28,046 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:28,046 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 21:08:28,046 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1847513111] [2020-10-26 21:08:28,047 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 21:08:28,047 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:28,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 21:08:28,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 21:08:28,048 INFO L87 Difference]: Start difference. First operand 7776 states and 10337 transitions. Second operand 6 states. [2020-10-26 21:08:28,183 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:08:39,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:08:39,993 INFO L93 Difference]: Finished difference Result 18268 states and 24469 transitions. [2020-10-26 21:08:39,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 21:08:39,994 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 911 [2020-10-26 21:08:39,996 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:08:40,058 INFO L225 Difference]: With dead ends: 18268 [2020-10-26 21:08:40,058 INFO L226 Difference]: Without dead ends: 11225 [2020-10-26 21:08:40,076 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:08:40,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11225 states. [2020-10-26 21:08:40,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11225 to 11193. [2020-10-26 21:08:40,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11193 states. [2020-10-26 21:08:40,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11193 states to 11193 states and 14509 transitions. [2020-10-26 21:08:40,346 INFO L78 Accepts]: Start accepts. Automaton has 11193 states and 14509 transitions. Word has length 911 [2020-10-26 21:08:40,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:08:40,348 INFO L481 AbstractCegarLoop]: Abstraction has 11193 states and 14509 transitions. [2020-10-26 21:08:40,348 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 21:08:40,349 INFO L276 IsEmpty]: Start isEmpty. Operand 11193 states and 14509 transitions. [2020-10-26 21:08:40,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 943 [2020-10-26 21:08:40,388 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:08:40,389 INFO L422 BasicCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:08:40,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:08:40,390 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:08:40,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:08:40,391 INFO L82 PathProgramCache]: Analyzing trace with hash -136158541, now seen corresponding path program 1 times [2020-10-26 21:08:40,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:08:40,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [622520586] [2020-10-26 21:08:40,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:08:40,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:40,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:40,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:40,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 964 [2020-10-26 21:08:45,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:08:45,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-26 21:08:45,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:08:45,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 21:08:45,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:08:45,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:45,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:08:45,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:45,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 21:08:45,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:45,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:45,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:08:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:45,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:08:45,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:08:45,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:08:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:08:45,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-26 21:08:45,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:08:45,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:45,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:45,954 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:45,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 21:08:45,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-26 21:08:45,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:08:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:08:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 21:08:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:45,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-10-26 21:08:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:08:46,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:08:46,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:08:46,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:08:46,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:08:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:08:46,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:08:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:08:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:08:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:08:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:08:46,429 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 134 proven. 30 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-10-26 21:08:46,430 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [622520586] [2020-10-26 21:08:46,430 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:08:46,430 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:08:46,430 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342831603] [2020-10-26 21:08:46,432 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:08:46,432 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:08:46,433 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:08:46,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:08:46,433 INFO L87 Difference]: Start difference. First operand 11193 states and 14509 transitions. Second operand 7 states. [2020-10-26 21:08:46,716 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:08:51,144 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:03,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:03,101 INFO L93 Difference]: Finished difference Result 32228 states and 43785 transitions. [2020-10-26 21:09:03,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:09:03,103 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 942 [2020-10-26 21:09:03,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:03,204 INFO L225 Difference]: With dead ends: 32228 [2020-10-26 21:09:03,205 INFO L226 Difference]: Without dead ends: 21768 [2020-10-26 21:09:03,233 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:09:03,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21768 states. [2020-10-26 21:09:03,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21768 to 21646. [2020-10-26 21:09:03,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21646 states. [2020-10-26 21:09:03,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21646 states to 21646 states and 28093 transitions. [2020-10-26 21:09:03,889 INFO L78 Accepts]: Start accepts. Automaton has 21646 states and 28093 transitions. Word has length 942 [2020-10-26 21:09:03,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:03,890 INFO L481 AbstractCegarLoop]: Abstraction has 21646 states and 28093 transitions. [2020-10-26 21:09:03,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:09:03,890 INFO L276 IsEmpty]: Start isEmpty. Operand 21646 states and 28093 transitions. [2020-10-26 21:09:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1009 [2020-10-26 21:09:03,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:03,960 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:03,961 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 21:09:03,961 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:03,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:03,962 INFO L82 PathProgramCache]: Analyzing trace with hash 1174410295, now seen corresponding path program 1 times [2020-10-26 21:09:03,962 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:03,962 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1945363647] [2020-10-26 21:09:03,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:04,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:04,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:04,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:05,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:09,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:09,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1034 [2020-10-26 21:09:09,144 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:09:09,144 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-26 21:09:09,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:09,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:09:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:09:09,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-26 21:09:09,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:09,530 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:09:09,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:09,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:09,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:09,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:09,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:09,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 21:09:09,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:09,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:09,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:09:09,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:09,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:09:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:09,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:09,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:09,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:09,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:09:09,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:09:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 21:09:09,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:09:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:09,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:09:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:09,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:09,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:09,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 21:09:09,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:09,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-26 21:09:09,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:09,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:09,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 21:09:09,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:09:09,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2020-10-26 21:09:09,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:09,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:10,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:10,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-26 21:09:10,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:10,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 21:09:10,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-26 21:09:10,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:10,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:09:10,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2020-10-26 21:09:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:10,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:10,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:10,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-10-26 21:09:10,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:10,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 21:09:10,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:10,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 48 [2020-10-26 21:09:10,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:10,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:09:10,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-26 21:09:10,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:10,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:10,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:10,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:09:10,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:10,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 21:09:10,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-26 21:09:10,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:10,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:10,989 INFO L134 CoverageAnalysis]: Checked inductivity of 403 backedges. 199 proven. 121 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 21:09:10,989 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1945363647] [2020-10-26 21:09:10,989 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:09:10,990 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 21:09:10,990 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636634150] [2020-10-26 21:09:10,991 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:09:10,991 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:10,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:09:10,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:09:10,992 INFO L87 Difference]: Start difference. First operand 21646 states and 28093 transitions. Second operand 8 states. [2020-10-26 21:09:11,139 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:23,922 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-26 21:09:26,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:26,812 INFO L93 Difference]: Finished difference Result 62529 states and 84473 transitions. [2020-10-26 21:09:26,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:09:26,813 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1008 [2020-10-26 21:09:26,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:26,962 INFO L225 Difference]: With dead ends: 62529 [2020-10-26 21:09:26,962 INFO L226 Difference]: Without dead ends: 41616 [2020-10-26 21:09:27,024 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:09:27,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41616 states. [2020-10-26 21:09:28,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41616 to 41461. [2020-10-26 21:09:28,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41461 states. [2020-10-26 21:09:28,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41461 states to 41461 states and 54258 transitions. [2020-10-26 21:09:28,305 INFO L78 Accepts]: Start accepts. Automaton has 41461 states and 54258 transitions. Word has length 1008 [2020-10-26 21:09:28,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:28,306 INFO L481 AbstractCegarLoop]: Abstraction has 41461 states and 54258 transitions. [2020-10-26 21:09:28,306 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:09:28,306 INFO L276 IsEmpty]: Start isEmpty. Operand 41461 states and 54258 transitions. [2020-10-26 21:09:28,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1028 [2020-10-26 21:09:28,408 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:28,409 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:28,409 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 21:09:28,410 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:28,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:28,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1781161250, now seen corresponding path program 1 times [2020-10-26 21:09:28,412 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:28,412 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [56919056] [2020-10-26 21:09:28,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:28,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:28,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:29,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:30,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:33,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:33,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1049 [2020-10-26 21:09:33,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:09:33,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 21:09:33,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:09:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:09:33,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-10-26 21:09:33,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:34,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:09:34,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:34,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:34,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:34,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:09:34,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:34,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:09:34,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:09:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:09:34,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:09:34,100 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:34,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:09:34,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:34,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:34,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:34,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:34,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-26 21:09:34,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:09:34,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 21:09:34,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:34,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-26 21:09:34,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:34,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-26 21:09:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:34,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:34,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:34,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 21:09:34,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 21:09:34,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:09:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:09:34,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 21:09:34,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:34,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-26 21:09:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:34,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:34,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:09:34,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 109 [2020-10-26 21:09:34,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:09:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 21:09:34,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:09:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 21:09:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 106 [2020-10-26 21:09:34,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 21:09:34,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:09:35,036 INFO L134 CoverageAnalysis]: Checked inductivity of 325 backedges. 225 proven. 90 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 21:09:35,037 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [56919056] [2020-10-26 21:09:35,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:09:35,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-26 21:09:35,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286573163] [2020-10-26 21:09:35,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 21:09:35,039 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:09:35,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 21:09:35,039 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-10-26 21:09:35,040 INFO L87 Difference]: Start difference. First operand 41461 states and 54258 transitions. Second operand 9 states. [2020-10-26 21:09:35,180 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:49,103 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-26 21:09:52,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:09:52,447 INFO L93 Difference]: Finished difference Result 116586 states and 158392 transitions. [2020-10-26 21:09:52,451 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:09:52,451 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 1027 [2020-10-26 21:09:52,452 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:09:52,697 INFO L225 Difference]: With dead ends: 116586 [2020-10-26 21:09:52,698 INFO L226 Difference]: Without dead ends: 75858 [2020-10-26 21:09:52,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2020-10-26 21:09:52,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75858 states. [2020-10-26 21:09:54,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75858 to 75605. [2020-10-26 21:09:54,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75605 states. [2020-10-26 21:09:55,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75605 states to 75605 states and 99304 transitions. [2020-10-26 21:09:55,259 INFO L78 Accepts]: Start accepts. Automaton has 75605 states and 99304 transitions. Word has length 1027 [2020-10-26 21:09:55,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:09:55,260 INFO L481 AbstractCegarLoop]: Abstraction has 75605 states and 99304 transitions. [2020-10-26 21:09:55,260 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 21:09:55,260 INFO L276 IsEmpty]: Start isEmpty. Operand 75605 states and 99304 transitions. [2020-10-26 21:09:55,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1236 [2020-10-26 21:09:55,395 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:09:55,396 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:09:55,396 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 21:09:55,397 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:09:55,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:09:55,398 INFO L82 PathProgramCache]: Analyzing trace with hash -424921350, now seen corresponding path program 1 times [2020-10-26 21:09:55,398 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:09:55,398 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2003815440] [2020-10-26 21:09:55,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:09:55,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:09:55,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:55,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:56,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:56,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:09:56,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:00,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:00,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1265 [2020-10-26 21:10:00,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 21:10:00,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-10-26 21:10:00,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:10:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:10:00,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 177 [2020-10-26 21:10:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:00,930 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-26 21:10:00,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:10:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:00,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:00,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:00,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:10:00,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:10:00,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:10:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:10:00,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:10:00,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:00,974 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:10:00,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:00,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:00,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:01,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:01,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-26 21:10:01,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:10:01,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:10:01,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:01,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-26 21:10:01,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:01,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-10-26 21:10:01,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:01,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:10:01,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:10:01,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-26 21:10:01,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:10:01,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-26 21:10:01,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:10:01,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:10:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:10:01,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-26 21:10:01,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:10:01,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-10-26 21:10:01,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:10:01,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking...