/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/Problem11_label30.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 22:39:42,949 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 22:39:42,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 22:39:43,013 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 22:39:43,013 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 22:39:43,021 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 22:39:43,024 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 22:39:43,029 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 22:39:43,033 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 22:39:43,040 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 22:39:43,042 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 22:39:43,043 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 22:39:43,044 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 22:39:43,048 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 22:39:43,051 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 22:39:43,053 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 22:39:43,055 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 22:39:43,059 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 22:39:43,089 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 22:39:43,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 22:39:43,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 22:39:43,101 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 22:39:43,103 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 22:39:43,106 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 22:39:43,116 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 22:39:43,116 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 22:39:43,117 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 22:39:43,119 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 22:39:43,119 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 22:39:43,120 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 22:39:43,121 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 22:39:43,122 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 22:39:43,124 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 22:39:43,125 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 22:39:43,126 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 22:39:43,126 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 22:39:43,127 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 22:39:43,127 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 22:39:43,128 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 22:39:43,129 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 22:39:43,130 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 22:39:43,139 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 22:39:43,189 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 22:39:43,189 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 22:39:43,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 22:39:43,194 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 22:39:43,194 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 22:39:43,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 22:39:43,195 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 22:39:43,195 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 22:39:43,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 22:39:43,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 22:39:43,196 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 22:39:43,197 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 22:39:43,197 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 22:39:43,197 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 22:39:43,198 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 22:39:43,198 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 22:39:43,198 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 22:39:43,198 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 22:39:43,199 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 22:39:43,199 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 22:39:43,199 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 22:39:43,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 22:39:43,200 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 22:39:43,200 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 22:39:43,200 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 22:39:43,200 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 22:39:43,201 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 22:39:43,201 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 22:39:43,201 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 22:39:43,201 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 22:39:43,617 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 22:39:43,644 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 22:39:43,647 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 22:39:43,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 22:39:43,650 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 22:39:43,651 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label30.c [2020-10-26 22:39:43,741 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcdd0e143/6208bff6af0e4a7e91294cefccafe739/FLAGf6dbb12c3 [2020-10-26 22:39:44,512 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 22:39:44,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label30.c [2020-10-26 22:39:44,548 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcdd0e143/6208bff6af0e4a7e91294cefccafe739/FLAGf6dbb12c3 [2020-10-26 22:39:44,696 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dcdd0e143/6208bff6af0e4a7e91294cefccafe739 [2020-10-26 22:39:44,699 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 22:39:44,707 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 22:39:44,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 22:39:44,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 22:39:44,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 22:39:44,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:39:44" (1/1) ... [2020-10-26 22:39:44,723 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@192283d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:44, skipping insertion in model container [2020-10-26 22:39:44,724 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 10:39:44" (1/1) ... [2020-10-26 22:39:44,734 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 22:39:44,816 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 22:39:45,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:39:45,405 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 22:39:45,580 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 22:39:45,599 INFO L208 MainTranslator]: Completed translation [2020-10-26 22:39:45,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45 WrapperNode [2020-10-26 22:39:45,600 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 22:39:45,601 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 22:39:45,601 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 22:39:45,602 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 22:39:45,616 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45" (1/1) ... [2020-10-26 22:39:45,616 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45" (1/1) ... [2020-10-26 22:39:45,661 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45" (1/1) ... [2020-10-26 22:39:45,662 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45" (1/1) ... [2020-10-26 22:39:45,730 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45" (1/1) ... [2020-10-26 22:39:45,758 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45" (1/1) ... [2020-10-26 22:39:45,772 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45" (1/1) ... [2020-10-26 22:39:45,784 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 22:39:45,787 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 22:39:45,787 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 22:39:45,787 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 22:39:45,788 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45" (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 22:39:45,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 22:39:45,879 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 22:39:45,880 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 22:39:45,880 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 22:39:45,881 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 22:39:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 22:39:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 22:39:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 22:39:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 22:39:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 22:39:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 22:39:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 22:39:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 22:39:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 22:39:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 22:39:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 22:39:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 22:39:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 22:39:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 22:39:47,933 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 22:39:47,933 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 22:39:47,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:39:47 BoogieIcfgContainer [2020-10-26 22:39:47,936 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 22:39:47,939 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 22:39:47,939 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 22:39:47,943 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 22:39:47,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 10:39:44" (1/3) ... [2020-10-26 22:39:47,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51573866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:39:47, skipping insertion in model container [2020-10-26 22:39:47,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 10:39:45" (2/3) ... [2020-10-26 22:39:47,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@51573866 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 10:39:47, skipping insertion in model container [2020-10-26 22:39:47,946 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 10:39:47" (3/3) ... [2020-10-26 22:39:47,947 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label30.c [2020-10-26 22:39:47,962 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 22:39:47,969 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 22:39:47,985 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 22:39:48,020 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 22:39:48,021 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 22:39:48,021 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 22:39:48,021 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 22:39:48,021 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 22:39:48,022 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 22:39:48,022 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 22:39:48,022 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 22:39:48,052 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-26 22:39:48,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-26 22:39:48,061 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:48,063 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] [2020-10-26 22:39:48,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:48,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:48,071 INFO L82 PathProgramCache]: Analyzing trace with hash -964503696, now seen corresponding path program 1 times [2020-10-26 22:39:48,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:48,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836670742] [2020-10-26 22:39:48,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:48,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:48,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:48,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:48,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-26 22:39:48,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:48,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 551 [2020-10-26 22:39:48,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:39:48,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:48,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-10-26 22:39:48,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 22:39:49,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:49,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:49,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:49,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:49,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:49,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:49,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 22:39:49,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:49,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:49,122 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 22:39:49,123 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836670742] [2020-10-26 22:39:49,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:39:49,126 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 22:39:49,127 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147848074] [2020-10-26 22:39:49,134 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 22:39:49,134 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:49,156 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 22:39:49,157 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 22:39:49,160 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 4 states. [2020-10-26 22:39:52,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:52,272 INFO L93 Difference]: Finished difference Result 810 states and 1408 transitions. [2020-10-26 22:39:52,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:39:52,274 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 36 [2020-10-26 22:39:52,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:52,304 INFO L225 Difference]: With dead ends: 810 [2020-10-26 22:39:52,305 INFO L226 Difference]: Without dead ends: 434 [2020-10-26 22:39:52,315 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:39:52,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 434 states. [2020-10-26 22:39:52,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 434 to 425. [2020-10-26 22:39:52,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 425 states. [2020-10-26 22:39:52,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 425 states to 425 states and 612 transitions. [2020-10-26 22:39:52,413 INFO L78 Accepts]: Start accepts. Automaton has 425 states and 612 transitions. Word has length 36 [2020-10-26 22:39:52,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:52,415 INFO L481 AbstractCegarLoop]: Abstraction has 425 states and 612 transitions. [2020-10-26 22:39:52,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 22:39:52,415 INFO L276 IsEmpty]: Start isEmpty. Operand 425 states and 612 transitions. [2020-10-26 22:39:52,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-26 22:39:52,423 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:52,424 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:52,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 22:39:52,425 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:52,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:52,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1778426764, now seen corresponding path program 1 times [2020-10-26 22:39:52,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:52,427 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [992207294] [2020-10-26 22:39:52,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:52,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:52,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:52,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:53,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:54,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:54,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-26 22:39:54,426 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:39:54,426 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1914 [2020-10-26 22:39:54,428 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:39:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:54,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-26 22:39:54,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:54,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:54,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:54,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:54,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:54,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:54,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:54,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 22:39:54,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:54,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:54,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:54,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:54,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:39:54,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:54,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:54,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:54,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:39:54,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:54,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-26 22:39:54,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:39:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:39:54,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:39:54,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:54,971 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:39:54,971 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [992207294] [2020-10-26 22:39:54,972 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:39:54,972 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:39:54,972 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1294524162] [2020-10-26 22:39:54,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:39:54,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:39:54,977 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:39:54,978 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:39:54,978 INFO L87 Difference]: Start difference. First operand 425 states and 612 transitions. Second operand 7 states. [2020-10-26 22:39:58,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:39:58,638 INFO L93 Difference]: Finished difference Result 1267 states and 1855 transitions. [2020-10-26 22:39:58,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:39:58,640 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-26 22:39:58,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:39:58,647 INFO L225 Difference]: With dead ends: 1267 [2020-10-26 22:39:58,647 INFO L226 Difference]: Without dead ends: 848 [2020-10-26 22:39:58,649 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:39:58,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-10-26 22:39:58,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 816. [2020-10-26 22:39:58,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 816 states. [2020-10-26 22:39:58,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 816 states to 816 states and 1094 transitions. [2020-10-26 22:39:58,724 INFO L78 Accepts]: Start accepts. Automaton has 816 states and 1094 transitions. Word has length 108 [2020-10-26 22:39:58,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:39:58,726 INFO L481 AbstractCegarLoop]: Abstraction has 816 states and 1094 transitions. [2020-10-26 22:39:58,726 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:39:58,726 INFO L276 IsEmpty]: Start isEmpty. Operand 816 states and 1094 transitions. [2020-10-26 22:39:58,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-26 22:39:58,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:39:58,733 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:39:58,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 22:39:58,733 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:39:58,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:39:58,734 INFO L82 PathProgramCache]: Analyzing trace with hash 43255336, now seen corresponding path program 1 times [2020-10-26 22:39:58,734 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:39:58,734 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1975342646] [2020-10-26 22:39:58,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:39:58,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:58,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:59,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:59,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:59,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 123 [2020-10-26 22:39:59,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:39:59,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 837 [2020-10-26 22:39:59,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 22:39:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:39:59,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:39:59,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:59,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:39:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:59,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:39:59,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:39:59,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:39:59,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:39:59,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 22:39:59,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:39:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:39:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:39:59,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:39:59,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:39:59,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:39:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:39:59,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:00,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:00,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-26 22:40:00,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:00,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-10-26 22:40:00,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:00,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:00,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-26 22:40:00,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:00,136 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:40:00,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1975342646] [2020-10-26 22:40:00,137 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 22:40:00,137 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 22:40:00,137 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050689563] [2020-10-26 22:40:00,138 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:00,139 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:00,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:00,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:00,140 INFO L87 Difference]: Start difference. First operand 816 states and 1094 transitions. Second operand 7 states. [2020-10-26 22:40:03,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:03,634 INFO L93 Difference]: Finished difference Result 2063 states and 2855 transitions. [2020-10-26 22:40:03,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:40:03,635 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 111 [2020-10-26 22:40:03,636 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:03,644 INFO L225 Difference]: With dead ends: 2063 [2020-10-26 22:40:03,644 INFO L226 Difference]: Without dead ends: 1253 [2020-10-26 22:40:03,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:03,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1253 states. [2020-10-26 22:40:03,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1253 to 1216. [2020-10-26 22:40:03,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1216 states. [2020-10-26 22:40:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1216 states to 1216 states and 1530 transitions. [2020-10-26 22:40:03,724 INFO L78 Accepts]: Start accepts. Automaton has 1216 states and 1530 transitions. Word has length 111 [2020-10-26 22:40:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:03,725 INFO L481 AbstractCegarLoop]: Abstraction has 1216 states and 1530 transitions. [2020-10-26 22:40:03,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:03,725 INFO L276 IsEmpty]: Start isEmpty. Operand 1216 states and 1530 transitions. [2020-10-26 22:40:03,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-26 22:40:03,728 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:03,728 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:03,728 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 22:40:03,728 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:03,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:03,729 INFO L82 PathProgramCache]: Analyzing trace with hash -1990972669, now seen corresponding path program 1 times [2020-10-26 22:40:03,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:03,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556477414] [2020-10-26 22:40:03,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:03,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:03,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:04,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:04,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-26 22:40:04,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:04,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-26 22:40:04,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:40:04,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 22:40:04,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:40:04,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:04,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:04,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:04,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:04,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:04,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:40:04,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:04,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:04,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:04,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:04,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:04,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:04,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:04,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:40:04,630 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:04,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-26 22:40:04,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:04,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:40:04,631 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:04,733 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 27 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 22:40:04,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556477414] [2020-10-26 22:40:04,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:04,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:40:04,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084138599] [2020-10-26 22:40:04,736 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:40:04,737 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:04,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:40:04,746 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:40:04,746 INFO L87 Difference]: Start difference. First operand 1216 states and 1530 transitions. Second operand 5 states. [2020-10-26 22:40:07,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:07,673 INFO L93 Difference]: Finished difference Result 2456 states and 3276 transitions. [2020-10-26 22:40:07,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:40:07,676 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-26 22:40:07,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:07,690 INFO L225 Difference]: With dead ends: 2456 [2020-10-26 22:40:07,690 INFO L226 Difference]: Without dead ends: 1624 [2020-10-26 22:40:07,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:40:07,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1624 states. [2020-10-26 22:40:07,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1624 to 1608. [2020-10-26 22:40:07,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1608 states. [2020-10-26 22:40:07,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1608 states to 1608 states and 2077 transitions. [2020-10-26 22:40:07,767 INFO L78 Accepts]: Start accepts. Automaton has 1608 states and 2077 transitions. Word has length 167 [2020-10-26 22:40:07,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:07,769 INFO L481 AbstractCegarLoop]: Abstraction has 1608 states and 2077 transitions. [2020-10-26 22:40:07,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:40:07,769 INFO L276 IsEmpty]: Start isEmpty. Operand 1608 states and 2077 transitions. [2020-10-26 22:40:07,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-26 22:40:07,780 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:07,780 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:07,780 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 22:40:07,781 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:07,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:07,781 INFO L82 PathProgramCache]: Analyzing trace with hash -2113459390, now seen corresponding path program 1 times [2020-10-26 22:40:07,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:07,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [817789886] [2020-10-26 22:40:07,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:07,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:07,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:08,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:08,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:10,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:10,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-26 22:40:10,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:10,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2198 [2020-10-26 22:40:10,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:10,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:40:10,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:40:10,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:40:10,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:10,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:10,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:10,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:10,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:10,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:40:10,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:10,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:10,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:10,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:10,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:10,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:10,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-10-26 22:40:10,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:10,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:40:10,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:10,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:10,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:10,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:10,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:10,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-26 22:40:10,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:10,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 22:40:10,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:10,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:10,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:40:10,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:10,780 INFO L134 CoverageAnalysis]: Checked inductivity of 128 backedges. 125 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:40:10,781 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [817789886] [2020-10-26 22:40:10,781 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:10,781 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:40:10,782 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377362041] [2020-10-26 22:40:10,782 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:40:10,782 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:10,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:40:10,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:40:10,783 INFO L87 Difference]: Start difference. First operand 1608 states and 2077 transitions. Second operand 8 states. [2020-10-26 22:40:13,610 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:13,611 INFO L93 Difference]: Finished difference Result 3238 states and 4314 transitions. [2020-10-26 22:40:13,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:40:13,612 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 224 [2020-10-26 22:40:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:13,628 INFO L225 Difference]: With dead ends: 3238 [2020-10-26 22:40:13,628 INFO L226 Difference]: Without dead ends: 2014 [2020-10-26 22:40:13,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:40:13,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2014 states. [2020-10-26 22:40:13,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2014 to 2001. [2020-10-26 22:40:13,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2001 states. [2020-10-26 22:40:13,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2001 states to 2001 states and 2586 transitions. [2020-10-26 22:40:13,713 INFO L78 Accepts]: Start accepts. Automaton has 2001 states and 2586 transitions. Word has length 224 [2020-10-26 22:40:13,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:13,714 INFO L481 AbstractCegarLoop]: Abstraction has 2001 states and 2586 transitions. [2020-10-26 22:40:13,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:40:13,715 INFO L276 IsEmpty]: Start isEmpty. Operand 2001 states and 2586 transitions. [2020-10-26 22:40:13,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 226 [2020-10-26 22:40:13,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:13,720 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:13,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 22:40:13,721 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:13,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:13,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1577735882, now seen corresponding path program 1 times [2020-10-26 22:40:13,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:13,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [65329479] [2020-10-26 22:40:13,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:13,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:13,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:13,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:14,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:16,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:16,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-10-26 22:40:16,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:16,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2745 [2020-10-26 22:40:16,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:40:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:40:16,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 209 [2020-10-26 22:40:16,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:16,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:16,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:16,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:16,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:16,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:16,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:16,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 22:40:16,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:16,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:40:16,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:16,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:16,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:16,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:17,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:17,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:17,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:17,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-26 22:40:17,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:17,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:40:17,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:40:17,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:17,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:17,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:17,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:17,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-26 22:40:17,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:17,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-10-26 22:40:17,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:40:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:17,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:40:17,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:17,490 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 42 proven. 83 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:40:17,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [65329479] [2020-10-26 22:40:17,492 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:17,492 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:40:17,493 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1348858746] [2020-10-26 22:40:17,493 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:40:17,493 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:17,495 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:40:17,495 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:40:17,496 INFO L87 Difference]: Start difference. First operand 2001 states and 2586 transitions. Second operand 9 states. [2020-10-26 22:40:19,709 WARN L193 SmtUtils]: Spent 182.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 84 [2020-10-26 22:40:21,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:21,353 INFO L93 Difference]: Finished difference Result 4515 states and 6079 transitions. [2020-10-26 22:40:21,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:40:21,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 225 [2020-10-26 22:40:21,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:21,371 INFO L225 Difference]: With dead ends: 4515 [2020-10-26 22:40:21,372 INFO L226 Difference]: Without dead ends: 2888 [2020-10-26 22:40:21,377 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2020-10-26 22:40:21,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2888 states. [2020-10-26 22:40:21,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2888 to 2787. [2020-10-26 22:40:21,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2787 states. [2020-10-26 22:40:21,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2787 states to 2787 states and 3543 transitions. [2020-10-26 22:40:21,471 INFO L78 Accepts]: Start accepts. Automaton has 2787 states and 3543 transitions. Word has length 225 [2020-10-26 22:40:21,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:21,472 INFO L481 AbstractCegarLoop]: Abstraction has 2787 states and 3543 transitions. [2020-10-26 22:40:21,472 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:40:21,472 INFO L276 IsEmpty]: Start isEmpty. Operand 2787 states and 3543 transitions. [2020-10-26 22:40:21,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-10-26 22:40:21,476 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:21,477 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:21,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 22:40:21,477 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:21,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:21,478 INFO L82 PathProgramCache]: Analyzing trace with hash 1951791678, now seen corresponding path program 1 times [2020-10-26 22:40:21,478 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:21,478 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379895515] [2020-10-26 22:40:21,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:21,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:21,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:21,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:22,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:23,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:23,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-26 22:40:23,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:23,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2159 [2020-10-26 22:40:23,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 126 [2020-10-26 22:40:23,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:40:23,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:23,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:23,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:23,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:23,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:23,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:23,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:40:23,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:23,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:23,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:23,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:23,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:23,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:24,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:24,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-26 22:40:24,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:24,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:24,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:40:24,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:24,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:24,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:24,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:40:24,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:24,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-26 22:40:24,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:24,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:24,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:24,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:40:24,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:24,468 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 22:40:24,469 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379895515] [2020-10-26 22:40:24,469 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:24,469 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:24,469 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [780860243] [2020-10-26 22:40:24,470 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:24,470 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:24,471 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:24,472 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:24,472 INFO L87 Difference]: Start difference. First operand 2787 states and 3543 transitions. Second operand 7 states. [2020-10-26 22:40:28,202 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:28,202 INFO L93 Difference]: Finished difference Result 7081 states and 9642 transitions. [2020-10-26 22:40:28,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:40:28,203 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 226 [2020-10-26 22:40:28,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:28,233 INFO L225 Difference]: With dead ends: 7081 [2020-10-26 22:40:28,233 INFO L226 Difference]: Without dead ends: 4678 [2020-10-26 22:40:28,243 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:28,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2020-10-26 22:40:28,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 4568. [2020-10-26 22:40:28,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4568 states. [2020-10-26 22:40:28,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4568 states to 4568 states and 5626 transitions. [2020-10-26 22:40:28,400 INFO L78 Accepts]: Start accepts. Automaton has 4568 states and 5626 transitions. Word has length 226 [2020-10-26 22:40:28,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:28,401 INFO L481 AbstractCegarLoop]: Abstraction has 4568 states and 5626 transitions. [2020-10-26 22:40:28,401 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:28,401 INFO L276 IsEmpty]: Start isEmpty. Operand 4568 states and 5626 transitions. [2020-10-26 22:40:28,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2020-10-26 22:40:28,407 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:28,407 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:28,407 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 22:40:28,407 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:28,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:28,408 INFO L82 PathProgramCache]: Analyzing trace with hash -473385686, now seen corresponding path program 1 times [2020-10-26 22:40:28,408 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:28,409 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092818937] [2020-10-26 22:40:28,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:28,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:28,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:28,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:29,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:29,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-26 22:40:29,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 718 [2020-10-26 22:40:29,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:40:29,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 22:40:29,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:29,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:29,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:29,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:29,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:29,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:29,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:40:29,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:29,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:29,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 22:40:29,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:29,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:29,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:29,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:29,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:29,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:29,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-26 22:40:29,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:29,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:29,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:29,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:29,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:40:29,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:29,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:29,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:29,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:29,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:40:29,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:29,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-26 22:40:29,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:29,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:40:29,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:29,767 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-10-26 22:40:29,768 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092818937] [2020-10-26 22:40:29,768 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:29,768 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:40:29,768 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [872727514] [2020-10-26 22:40:29,769 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-26 22:40:29,769 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:29,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-26 22:40:29,770 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:40:29,771 INFO L87 Difference]: Start difference. First operand 4568 states and 5626 transitions. Second operand 6 states. [2020-10-26 22:40:33,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:33,692 INFO L93 Difference]: Finished difference Result 9577 states and 12015 transitions. [2020-10-26 22:40:33,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-26 22:40:33,693 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 236 [2020-10-26 22:40:33,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:33,722 INFO L225 Difference]: With dead ends: 9577 [2020-10-26 22:40:33,722 INFO L226 Difference]: Without dead ends: 5393 [2020-10-26 22:40:33,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:40:33,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5393 states. [2020-10-26 22:40:33,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5393 to 5154. [2020-10-26 22:40:33,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5154 states. [2020-10-26 22:40:33,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5154 states to 5154 states and 6467 transitions. [2020-10-26 22:40:33,908 INFO L78 Accepts]: Start accepts. Automaton has 5154 states and 6467 transitions. Word has length 236 [2020-10-26 22:40:33,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:33,909 INFO L481 AbstractCegarLoop]: Abstraction has 5154 states and 6467 transitions. [2020-10-26 22:40:33,909 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-26 22:40:33,909 INFO L276 IsEmpty]: Start isEmpty. Operand 5154 states and 6467 transitions. [2020-10-26 22:40:33,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 257 [2020-10-26 22:40:33,917 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:33,917 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:40:33,917 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 22:40:33,917 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:33,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:33,918 INFO L82 PathProgramCache]: Analyzing trace with hash -2135676542, now seen corresponding path program 1 times [2020-10-26 22:40:33,918 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:33,919 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28825239] [2020-10-26 22:40:33,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:33,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:34,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:34,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:35,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:35,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 270 [2020-10-26 22:40:35,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:35,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1864 [2020-10-26 22:40:35,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:35,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:40:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:40:35,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 261 [2020-10-26 22:40:35,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:36,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:36,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:36,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:36,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:36,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:36,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:36,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:40:36,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:36,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:40:36,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:36,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:36,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:36,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:36,371 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:36,372 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:40:36,372 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:36,372 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-10-26 22:40:36,372 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:36,373 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:40:36,373 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:36,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:40:36,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:36,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:36,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:36,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:40:36,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:36,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-26 22:40:36,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:36,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:40:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:36,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-26 22:40:36,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 94 proven. 52 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 22:40:36,895 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28825239] [2020-10-26 22:40:36,895 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:36,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:40:36,900 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [617887941] [2020-10-26 22:40:36,901 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-26 22:40:36,901 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:36,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-26 22:40:36,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-26 22:40:36,903 INFO L87 Difference]: Start difference. First operand 5154 states and 6467 transitions. Second operand 9 states. [2020-10-26 22:40:42,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:42,778 INFO L93 Difference]: Finished difference Result 11066 states and 15568 transitions. [2020-10-26 22:40:42,779 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-26 22:40:42,779 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 256 [2020-10-26 22:40:42,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:42,833 INFO L225 Difference]: With dead ends: 11066 [2020-10-26 22:40:42,833 INFO L226 Difference]: Without dead ends: 7858 [2020-10-26 22:40:42,846 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=74, Invalid=166, Unknown=0, NotChecked=0, Total=240 [2020-10-26 22:40:42,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7858 states. [2020-10-26 22:40:43,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7858 to 7563. [2020-10-26 22:40:43,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7563 states. [2020-10-26 22:40:43,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7563 states to 7563 states and 9925 transitions. [2020-10-26 22:40:43,097 INFO L78 Accepts]: Start accepts. Automaton has 7563 states and 9925 transitions. Word has length 256 [2020-10-26 22:40:43,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:43,098 INFO L481 AbstractCegarLoop]: Abstraction has 7563 states and 9925 transitions. [2020-10-26 22:40:43,098 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-26 22:40:43,098 INFO L276 IsEmpty]: Start isEmpty. Operand 7563 states and 9925 transitions. [2020-10-26 22:40:43,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2020-10-26 22:40:43,113 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:43,113 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:40:43,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 22:40:43,114 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:43,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:43,116 INFO L82 PathProgramCache]: Analyzing trace with hash 1628334902, now seen corresponding path program 1 times [2020-10-26 22:40:43,116 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:43,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [271081122] [2020-10-26 22:40:43,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:43,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:43,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:43,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:43,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:44,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:46,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 323 [2020-10-26 22:40:48,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 22:40:48,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-26 22:40:48,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 22:40:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:40:48,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 22:40:48,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:48,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:48,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 22:40:48,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:48,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:40:48,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:48,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:48,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:48,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-26 22:40:48,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:48,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:40:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:48,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:48,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:48,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:40:48,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:40:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-26 22:40:48,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:48,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:40:48,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:48,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:40:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:49,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:49,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:49,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 22:40:49,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:49,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-26 22:40:49,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:49,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:40:49,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:49,361 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 86 proven. 4 refuted. 0 times theorem prover too weak. 220 trivial. 0 not checked. [2020-10-26 22:40:49,362 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [271081122] [2020-10-26 22:40:49,362 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:49,362 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 22:40:49,362 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539698699] [2020-10-26 22:40:49,363 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:49,363 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:49,363 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:49,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:49,364 INFO L87 Difference]: Start difference. First operand 7563 states and 9925 transitions. Second operand 7 states. [2020-10-26 22:40:52,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:40:52,689 INFO L93 Difference]: Finished difference Result 15213 states and 21565 transitions. [2020-10-26 22:40:52,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:40:52,690 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 307 [2020-10-26 22:40:52,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:40:52,725 INFO L225 Difference]: With dead ends: 15213 [2020-10-26 22:40:52,725 INFO L226 Difference]: Without dead ends: 7836 [2020-10-26 22:40:52,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 2 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:40:52,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7836 states. [2020-10-26 22:40:52,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7836 to 7537. [2020-10-26 22:40:52,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7537 states. [2020-10-26 22:40:52,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7537 states to 7537 states and 9765 transitions. [2020-10-26 22:40:52,966 INFO L78 Accepts]: Start accepts. Automaton has 7537 states and 9765 transitions. Word has length 307 [2020-10-26 22:40:52,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:40:52,967 INFO L481 AbstractCegarLoop]: Abstraction has 7537 states and 9765 transitions. [2020-10-26 22:40:52,967 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:40:52,967 INFO L276 IsEmpty]: Start isEmpty. Operand 7537 states and 9765 transitions. [2020-10-26 22:40:52,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-26 22:40:52,981 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:40:52,981 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-26 22:40:52,982 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 22:40:52,982 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:40:52,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:40:52,983 INFO L82 PathProgramCache]: Analyzing trace with hash -483176046, now seen corresponding path program 1 times [2020-10-26 22:40:52,983 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:40:52,983 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712144076] [2020-10-26 22:40:52,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:40:53,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:53,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:53,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:53,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:55,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:55,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-26 22:40:55,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:40:55,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2694 [2020-10-26 22:40:55,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:55,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:40:55,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:40:55,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:40:55,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:55,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:55,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:55,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:40:55,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:55,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:40:55,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:55,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:55,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:55,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:56,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:40:56,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:56,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:56,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:56,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:40:56,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:56,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-26 22:40:56,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:40:56,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:56,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:40:56,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:56,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:40:56,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:56,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:56,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:56,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:40:56,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:56,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-26 22:40:56,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:40:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:40:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:40:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:56,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:40:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:40:56,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:40:56,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:40:56,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:40:56,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:40:56,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-26 22:40:56,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:40:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:40:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:40:56,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:40:56,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:40:56,733 INFO L134 CoverageAnalysis]: Checked inductivity of 341 backedges. 256 proven. 2 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2020-10-26 22:40:56,733 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712144076] [2020-10-26 22:40:56,734 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:40:56,734 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:40:56,734 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161775754] [2020-10-26 22:40:56,735 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:40:56,735 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:40:56,736 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:40:56,736 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:40:56,736 INFO L87 Difference]: Start difference. First operand 7537 states and 9765 transitions. Second operand 7 states. [2020-10-26 22:41:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:01,630 INFO L93 Difference]: Finished difference Result 15130 states and 19777 transitions. [2020-10-26 22:41:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:41:01,630 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-26 22:41:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:01,659 INFO L225 Difference]: With dead ends: 15130 [2020-10-26 22:41:01,659 INFO L226 Difference]: Without dead ends: 9149 [2020-10-26 22:41:01,673 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:01,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9149 states. [2020-10-26 22:41:01,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9149 to 8907. [2020-10-26 22:41:01,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8907 states. [2020-10-26 22:41:01,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8907 states to 8907 states and 11374 transitions. [2020-10-26 22:41:01,895 INFO L78 Accepts]: Start accepts. Automaton has 8907 states and 11374 transitions. Word has length 325 [2020-10-26 22:41:01,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:01,896 INFO L481 AbstractCegarLoop]: Abstraction has 8907 states and 11374 transitions. [2020-10-26 22:41:01,896 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:01,896 INFO L276 IsEmpty]: Start isEmpty. Operand 8907 states and 11374 transitions. [2020-10-26 22:41:01,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 326 [2020-10-26 22:41:01,911 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:01,911 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:01,912 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 22:41:01,912 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:01,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:01,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1496859922, now seen corresponding path program 1 times [2020-10-26 22:41:01,913 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:01,914 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608740527] [2020-10-26 22:41:01,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:02,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:02,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:07,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:07,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 341 [2020-10-26 22:41:07,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:41:07,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-26 22:41:07,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-26 22:41:07,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-26 22:41:07,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 22:41:07,221 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:07,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:07,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:07,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:07,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:07,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:41:07,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:07,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:07,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:07,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:07,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:07,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:07,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:07,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:41:07,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:07,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-26 22:41:07,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:07,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-26 22:41:07,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:07,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:41:07,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:07,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:07,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 22:41:07,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:07,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-26 22:41:07,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:07,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 22:41:07,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:07,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:41:07,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:07,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:07,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:41:07,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:07,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-26 22:41:07,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-26 22:41:07,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:07,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:07,882 INFO L134 CoverageAnalysis]: Checked inductivity of 321 backedges. 159 proven. 73 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 22:41:07,883 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608740527] [2020-10-26 22:41:07,883 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:07,883 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:07,883 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994078975] [2020-10-26 22:41:07,884 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:07,885 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:07,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:07,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:07,886 INFO L87 Difference]: Start difference. First operand 8907 states and 11374 transitions. Second operand 7 states. [2020-10-26 22:41:12,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:12,871 INFO L93 Difference]: Finished difference Result 21317 states and 27969 transitions. [2020-10-26 22:41:12,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:41:12,872 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 325 [2020-10-26 22:41:12,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:12,919 INFO L225 Difference]: With dead ends: 21317 [2020-10-26 22:41:12,920 INFO L226 Difference]: Without dead ends: 12611 [2020-10-26 22:41:12,943 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:12,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12611 states. [2020-10-26 22:41:13,191 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12611 to 10479. [2020-10-26 22:41:13,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10479 states. [2020-10-26 22:41:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10479 states to 10479 states and 13233 transitions. [2020-10-26 22:41:13,220 INFO L78 Accepts]: Start accepts. Automaton has 10479 states and 13233 transitions. Word has length 325 [2020-10-26 22:41:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:13,221 INFO L481 AbstractCegarLoop]: Abstraction has 10479 states and 13233 transitions. [2020-10-26 22:41:13,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 10479 states and 13233 transitions. [2020-10-26 22:41:13,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-10-26 22:41:13,235 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:13,236 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:13,236 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-26 22:41:13,236 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:13,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:13,237 INFO L82 PathProgramCache]: Analyzing trace with hash 491159673, now seen corresponding path program 1 times [2020-10-26 22:41:13,237 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:13,237 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59393604] [2020-10-26 22:41:13,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:13,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:13,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:13,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:13,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:15,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:18,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:18,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 342 [2020-10-26 22:41:18,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:41:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-10-26 22:41:18,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-26 22:41:18,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:41:18,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:18,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:18,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:18,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:18,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:18,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:18,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:18,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:41:18,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:18,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:18,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:18,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:18,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:18,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:18,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:18,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:18,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:18,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 22:41:18,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:18,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:18,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 125 [2020-10-26 22:41:18,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:18,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:41:18,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:18,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:18,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:41:18,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:18,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-26 22:41:18,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:18,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:18,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:41:18,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:18,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2020-10-26 22:41:19,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:19,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:19,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:19,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:41:19,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:19,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-26 22:41:19,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-26 22:41:19,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:19,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:19,140 INFO L134 CoverageAnalysis]: Checked inductivity of 313 backedges. 155 proven. 69 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-26 22:41:19,140 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59393604] [2020-10-26 22:41:19,140 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:19,140 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:19,141 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944631484] [2020-10-26 22:41:19,141 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:19,141 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:19,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:19,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:19,142 INFO L87 Difference]: Start difference. First operand 10479 states and 13233 transitions. Second operand 7 states. [2020-10-26 22:41:23,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:23,278 INFO L93 Difference]: Finished difference Result 22015 states and 27657 transitions. [2020-10-26 22:41:23,279 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:41:23,279 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-10-26 22:41:23,280 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:23,319 INFO L225 Difference]: With dead ends: 22015 [2020-10-26 22:41:23,319 INFO L226 Difference]: Without dead ends: 11928 [2020-10-26 22:41:23,343 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:23,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11928 states. [2020-10-26 22:41:23,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11928 to 11877. [2020-10-26 22:41:23,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11877 states. [2020-10-26 22:41:23,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11877 states to 11877 states and 14601 transitions. [2020-10-26 22:41:23,693 INFO L78 Accepts]: Start accepts. Automaton has 11877 states and 14601 transitions. Word has length 326 [2020-10-26 22:41:23,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:23,694 INFO L481 AbstractCegarLoop]: Abstraction has 11877 states and 14601 transitions. [2020-10-26 22:41:23,694 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:23,694 INFO L276 IsEmpty]: Start isEmpty. Operand 11877 states and 14601 transitions. [2020-10-26 22:41:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 338 [2020-10-26 22:41:23,710 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:23,711 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:23,711 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-26 22:41:23,711 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:23,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:23,712 INFO L82 PathProgramCache]: Analyzing trace with hash -369814998, now seen corresponding path program 1 times [2020-10-26 22:41:23,712 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:23,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1968177847] [2020-10-26 22:41:23,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:23,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:23,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:24,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:24,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:25,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:25,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 353 [2020-10-26 22:41:25,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:41:25,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1405 [2020-10-26 22:41:25,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:25,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:41:25,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:41:25,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:25,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:25,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:25,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:25,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:25,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:25,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:25,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 22:41:25,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:25,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:25,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:25,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:25,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:25,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:25,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:25,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:41:25,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:25,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:41:25,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:25,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:25,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:25,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:25,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:41:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:25,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:25,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:25,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:41:25,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:25,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-26 22:41:25,546 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:25,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:25,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:25,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:41:25,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:25,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:41:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:25,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:25,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:25,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:41:25,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:25,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-26 22:41:25,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:25,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:41:25,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:25,954 INFO L134 CoverageAnalysis]: Checked inductivity of 345 backedges. 258 proven. 2 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2020-10-26 22:41:25,954 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1968177847] [2020-10-26 22:41:25,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:25,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:41:25,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [749235217] [2020-10-26 22:41:25,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:41:25,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:25,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:41:25,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:41:25,956 INFO L87 Difference]: Start difference. First operand 11877 states and 14601 transitions. Second operand 8 states. [2020-10-26 22:41:30,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:30,832 INFO L93 Difference]: Finished difference Result 25798 states and 31858 transitions. [2020-10-26 22:41:30,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:41:30,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 337 [2020-10-26 22:41:30,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:30,886 INFO L225 Difference]: With dead ends: 25798 [2020-10-26 22:41:30,886 INFO L226 Difference]: Without dead ends: 16067 [2020-10-26 22:41:30,907 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-26 22:41:30,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16067 states. [2020-10-26 22:41:31,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16067 to 13771. [2020-10-26 22:41:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13771 states. [2020-10-26 22:41:31,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13771 states to 13771 states and 16732 transitions. [2020-10-26 22:41:31,307 INFO L78 Accepts]: Start accepts. Automaton has 13771 states and 16732 transitions. Word has length 337 [2020-10-26 22:41:31,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:31,308 INFO L481 AbstractCegarLoop]: Abstraction has 13771 states and 16732 transitions. [2020-10-26 22:41:31,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:41:31,308 INFO L276 IsEmpty]: Start isEmpty. Operand 13771 states and 16732 transitions. [2020-10-26 22:41:31,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 343 [2020-10-26 22:41:31,324 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:31,325 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:41:31,325 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-26 22:41:31,325 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:31,326 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:31,326 INFO L82 PathProgramCache]: Analyzing trace with hash 909881751, now seen corresponding path program 1 times [2020-10-26 22:41:31,326 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:31,326 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1103767220] [2020-10-26 22:41:31,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:31,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:31,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:31,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:31,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 356 [2020-10-26 22:41:31,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 369 [2020-10-26 22:41:31,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 317 [2020-10-26 22:41:31,782 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-10-26 22:41:31,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:31,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:31,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:31,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:31,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:31,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:31,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:31,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:31,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:31,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:31,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:31,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:31,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-26 22:41:31,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:31,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:31,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:32,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:41:32,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:32,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:32,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:32,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 176 [2020-10-26 22:41:32,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:32,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-26 22:41:32,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:32,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 169 [2020-10-26 22:41:32,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:32,256 INFO L134 CoverageAnalysis]: Checked inductivity of 185 backedges. 57 proven. 2 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-10-26 22:41:32,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1103767220] [2020-10-26 22:41:32,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:32,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:41:32,257 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310643925] [2020-10-26 22:41:32,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:41:32,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:32,258 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:41:32,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:41:32,258 INFO L87 Difference]: Start difference. First operand 13771 states and 16732 transitions. Second operand 5 states. [2020-10-26 22:41:35,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:35,253 INFO L93 Difference]: Finished difference Result 31788 states and 39402 transitions. [2020-10-26 22:41:35,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 22:41:35,254 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 342 [2020-10-26 22:41:35,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:35,315 INFO L225 Difference]: With dead ends: 31788 [2020-10-26 22:41:35,315 INFO L226 Difference]: Without dead ends: 18409 [2020-10-26 22:41:35,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-26 22:41:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18409 states. [2020-10-26 22:41:35,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18409 to 18360. [2020-10-26 22:41:35,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18360 states. [2020-10-26 22:41:35,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18360 states to 18360 states and 22528 transitions. [2020-10-26 22:41:35,734 INFO L78 Accepts]: Start accepts. Automaton has 18360 states and 22528 transitions. Word has length 342 [2020-10-26 22:41:35,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:35,735 INFO L481 AbstractCegarLoop]: Abstraction has 18360 states and 22528 transitions. [2020-10-26 22:41:35,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 22:41:35,735 INFO L276 IsEmpty]: Start isEmpty. Operand 18360 states and 22528 transitions. [2020-10-26 22:41:35,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2020-10-26 22:41:35,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:35,749 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:35,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-26 22:41:35,749 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:35,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:35,749 INFO L82 PathProgramCache]: Analyzing trace with hash 1500483978, now seen corresponding path program 1 times [2020-10-26 22:41:35,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:35,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [396646228] [2020-10-26 22:41:35,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:35,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:35,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:36,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:36,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:37,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:38,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:38,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 368 [2020-10-26 22:41:38,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:41:38,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2364 [2020-10-26 22:41:38,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 239 [2020-10-26 22:41:38,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-26 22:41:38,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:38,415 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 22:41:38,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:38,425 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:38,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:38,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:38,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:41:38,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:38,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:38,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:38,426 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:38,426 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:38,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:38,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:38,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:38,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:38,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:41:38,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:38,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 22:41:38,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:38,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:38,488 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:38,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:41:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:38,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:38,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:38,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-26 22:41:38,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:38,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-26 22:41:38,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:38,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 22:41:38,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:38,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 235 [2020-10-26 22:41:38,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:38,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:38,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:38,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:41:38,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:38,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 22:41:38,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:38,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:38,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:38,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:41:38,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:38,951 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 261 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-26 22:41:38,951 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [396646228] [2020-10-26 22:41:38,951 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:38,951 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:38,952 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734906190] [2020-10-26 22:41:38,952 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:38,952 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:38,953 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:38,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:38,953 INFO L87 Difference]: Start difference. First operand 18360 states and 22528 transitions. Second operand 7 states. [2020-10-26 22:41:44,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:44,167 INFO L93 Difference]: Finished difference Result 37057 states and 45646 transitions. [2020-10-26 22:41:44,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:41:44,168 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 352 [2020-10-26 22:41:44,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:44,223 INFO L225 Difference]: With dead ends: 37057 [2020-10-26 22:41:44,223 INFO L226 Difference]: Without dead ends: 20443 [2020-10-26 22:41:44,249 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:44,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20443 states. [2020-10-26 22:41:44,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20443 to 17387. [2020-10-26 22:41:44,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17387 states. [2020-10-26 22:41:44,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17387 states to 17387 states and 21070 transitions. [2020-10-26 22:41:44,761 INFO L78 Accepts]: Start accepts. Automaton has 17387 states and 21070 transitions. Word has length 352 [2020-10-26 22:41:44,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:44,762 INFO L481 AbstractCegarLoop]: Abstraction has 17387 states and 21070 transitions. [2020-10-26 22:41:44,762 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:44,762 INFO L276 IsEmpty]: Start isEmpty. Operand 17387 states and 21070 transitions. [2020-10-26 22:41:44,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 377 [2020-10-26 22:41:44,778 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:44,779 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 22:41:44,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-26 22:41:44,779 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:44,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:44,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1549901843, now seen corresponding path program 1 times [2020-10-26 22:41:44,780 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:44,780 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [760760399] [2020-10-26 22:41:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:44,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:44,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:45,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 392 [2020-10-26 22:41:46,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:41:46,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1289 [2020-10-26 22:41:46,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:46,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:41:46,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-10-26 22:41:46,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:46,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:46,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:46,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:46,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:41:46,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:46,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:46,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:46,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:46,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:41:46,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:46,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-26 22:41:46,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:46,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:46,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:41:46,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:46,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:41:46,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:46,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-26 22:41:46,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:46,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:46,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:41:46,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:41:46,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:46,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:46,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:46,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 22:41:46,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:46,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-26 22:41:46,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:46,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-10-26 22:41:46,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:46,908 INFO L134 CoverageAnalysis]: Checked inductivity of 355 backedges. 225 proven. 2 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2020-10-26 22:41:46,908 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [760760399] [2020-10-26 22:41:46,908 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:46,908 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:41:46,909 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746154230] [2020-10-26 22:41:46,909 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:41:46,909 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:46,910 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:41:46,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:41:46,910 INFO L87 Difference]: Start difference. First operand 17387 states and 21070 transitions. Second operand 8 states. [2020-10-26 22:41:52,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:52,046 INFO L93 Difference]: Finished difference Result 36348 states and 43987 transitions. [2020-10-26 22:41:52,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:41:52,048 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 376 [2020-10-26 22:41:52,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:52,089 INFO L225 Difference]: With dead ends: 36348 [2020-10-26 22:41:52,090 INFO L226 Difference]: Without dead ends: 19351 [2020-10-26 22:41:52,115 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:52,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19351 states. [2020-10-26 22:41:52,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19351 to 18145. [2020-10-26 22:41:52,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18145 states. [2020-10-26 22:41:52,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18145 states to 18145 states and 21493 transitions. [2020-10-26 22:41:52,659 INFO L78 Accepts]: Start accepts. Automaton has 18145 states and 21493 transitions. Word has length 376 [2020-10-26 22:41:52,659 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:52,659 INFO L481 AbstractCegarLoop]: Abstraction has 18145 states and 21493 transitions. [2020-10-26 22:41:52,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:41:52,660 INFO L276 IsEmpty]: Start isEmpty. Operand 18145 states and 21493 transitions. [2020-10-26 22:41:52,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 387 [2020-10-26 22:41:52,675 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:52,676 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:41:52,676 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-26 22:41:52,676 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:52,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:52,677 INFO L82 PathProgramCache]: Analyzing trace with hash 431737046, now seen corresponding path program 1 times [2020-10-26 22:41:52,677 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:52,677 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1749599107] [2020-10-26 22:41:52,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:52,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:52,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:54,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:54,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 402 [2020-10-26 22:41:54,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:41:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1773 [2020-10-26 22:41:54,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 157 [2020-10-26 22:41:54,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 22:41:54,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:54,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:41:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:54,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:54,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:54,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:41:54,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:54,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 22:41:54,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:54,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:54,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:54,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:54,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:41:54,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:54,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:54,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-26 22:41:54,942 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:54,942 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 197 [2020-10-26 22:41:54,942 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:54,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:41:54,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:41:54,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-26 22:41:54,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2020-10-26 22:41:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:55,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:55,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:55,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 22:41:55,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-26 22:41:55,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:41:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:41:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 22:41:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:55,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 264 [2020-10-26 22:41:55,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:55,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:55,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:41:55,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-26 22:41:55,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:41:55,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-26 22:41:55,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:41:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:41:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 92 [2020-10-26 22:41:55,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:41:55,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:41:55,375 INFO L134 CoverageAnalysis]: Checked inductivity of 381 backedges. 194 proven. 93 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-10-26 22:41:55,375 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1749599107] [2020-10-26 22:41:55,375 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:41:55,375 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:41:55,375 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247062664] [2020-10-26 22:41:55,376 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:41:55,376 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:41:55,377 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:41:55,377 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:41:55,377 INFO L87 Difference]: Start difference. First operand 18145 states and 21493 transitions. Second operand 7 states. [2020-10-26 22:41:58,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:41:58,921 INFO L93 Difference]: Finished difference Result 35745 states and 42352 transitions. [2020-10-26 22:41:58,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 22:41:58,922 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 386 [2020-10-26 22:41:58,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:41:58,964 INFO L225 Difference]: With dead ends: 35745 [2020-10-26 22:41:58,964 INFO L226 Difference]: Without dead ends: 19926 [2020-10-26 22:41:58,984 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:41:59,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19926 states. [2020-10-26 22:41:59,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19926 to 19299. [2020-10-26 22:41:59,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19299 states. [2020-10-26 22:41:59,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19299 states to 19299 states and 22754 transitions. [2020-10-26 22:41:59,547 INFO L78 Accepts]: Start accepts. Automaton has 19299 states and 22754 transitions. Word has length 386 [2020-10-26 22:41:59,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:41:59,548 INFO L481 AbstractCegarLoop]: Abstraction has 19299 states and 22754 transitions. [2020-10-26 22:41:59,548 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:41:59,548 INFO L276 IsEmpty]: Start isEmpty. Operand 19299 states and 22754 transitions. [2020-10-26 22:41:59,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 436 [2020-10-26 22:41:59,570 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:41:59,570 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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] [2020-10-26 22:41:59,570 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-26 22:41:59,571 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:41:59,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:41:59,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1211088727, now seen corresponding path program 1 times [2020-10-26 22:41:59,573 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:41:59,573 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1257860965] [2020-10-26 22:41:59,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:41:59,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:41:59,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:41:59,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:00,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:00,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:02,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:03,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:03,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:04,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:04,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 453 [2020-10-26 22:42:04,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-26 22:42:04,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-26 22:42:04,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:04,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-26 22:42:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:42:04,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 444 [2020-10-26 22:42:04,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:04,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:04,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:04,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:04,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:04,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:04,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:04,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 22:42:04,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:04,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:42:04,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:04,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:04,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:04,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:05,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:05,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:05,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:42:05,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:42:05,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-26 22:42:05,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:05,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 117 [2020-10-26 22:42:05,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:05,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:42:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:05,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:05,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:42:05,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:42:05,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-26 22:42:05,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:05,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:05,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:05,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 85 [2020-10-26 22:42:05,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:05,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:42:05,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:05,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:05,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:05,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:42:05,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:05,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-26 22:42:05,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:42:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:05,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:42:05,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:06,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-26 22:42:06,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:06,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:06,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:06,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:42:06,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:06,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-26 22:42:06,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:06,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:06,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:06,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 22:42:06,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:06,647 INFO L134 CoverageAnalysis]: Checked inductivity of 652 backedges. 180 proven. 452 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-26 22:42:06,647 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1257860965] [2020-10-26 22:42:06,647 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:06,647 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:42:06,648 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [846775594] [2020-10-26 22:42:06,648 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 22:42:06,648 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:06,649 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 22:42:06,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:42:06,649 INFO L87 Difference]: Start difference. First operand 19299 states and 22754 transitions. Second operand 11 states. [2020-10-26 22:42:12,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:12,354 INFO L93 Difference]: Finished difference Result 24648 states and 29922 transitions. [2020-10-26 22:42:12,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-26 22:42:12,355 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 435 [2020-10-26 22:42:12,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:12,427 INFO L225 Difference]: With dead ends: 24648 [2020-10-26 22:42:12,427 INFO L226 Difference]: Without dead ends: 24645 [2020-10-26 22:42:12,436 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=157, Invalid=349, Unknown=0, NotChecked=0, Total=506 [2020-10-26 22:42:12,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24645 states. [2020-10-26 22:42:12,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24645 to 24317. [2020-10-26 22:42:12,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24317 states. [2020-10-26 22:42:12,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24317 states to 24317 states and 28621 transitions. [2020-10-26 22:42:12,981 INFO L78 Accepts]: Start accepts. Automaton has 24317 states and 28621 transitions. Word has length 435 [2020-10-26 22:42:12,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:12,982 INFO L481 AbstractCegarLoop]: Abstraction has 24317 states and 28621 transitions. [2020-10-26 22:42:12,982 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 22:42:12,982 INFO L276 IsEmpty]: Start isEmpty. Operand 24317 states and 28621 transitions. [2020-10-26 22:42:13,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-26 22:42:13,003 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:13,003 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 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] [2020-10-26 22:42:13,003 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-26 22:42:13,003 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:13,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:13,004 INFO L82 PathProgramCache]: Analyzing trace with hash 281548758, now seen corresponding path program 1 times [2020-10-26 22:42:13,004 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:13,004 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368739160] [2020-10-26 22:42:13,005 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:13,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:13,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:13,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:13,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:13,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:18,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:18,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 460 [2020-10-26 22:42:18,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:42:18,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-10-26 22:42:18,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 259 [2020-10-26 22:42:18,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:42:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:18,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:18,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:18,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:18,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:18,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:18,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:18,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 22:42:18,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:18,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:18,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:18,332 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:18,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:18,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:18,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:18,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:42:18,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:18,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 22:42:18,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:18,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:18,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:18,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:42:18,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:18,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:18,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:18,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:42:18,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:18,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-26 22:42:18,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:18,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-26 22:42:18,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:42:18,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:18,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:18,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:18,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:42:18,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-26 22:42:18,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:18,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:42:18,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:18,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 325 [2020-10-26 22:42:18,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:18,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:18,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:18,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:42:18,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 22:42:18,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-26 22:42:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:18,877 INFO L134 CoverageAnalysis]: Checked inductivity of 616 backedges. 259 proven. 69 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2020-10-26 22:42:18,877 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368739160] [2020-10-26 22:42:18,877 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:18,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:42:18,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545753883] [2020-10-26 22:42:18,878 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:42:18,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:18,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:42:18,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:42:18,879 INFO L87 Difference]: Start difference. First operand 24317 states and 28621 transitions. Second operand 7 states. [2020-10-26 22:42:22,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:22,723 INFO L93 Difference]: Finished difference Result 49054 states and 58017 transitions. [2020-10-26 22:42:22,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:42:22,724 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 442 [2020-10-26 22:42:22,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:22,806 INFO L225 Difference]: With dead ends: 49054 [2020-10-26 22:42:22,807 INFO L226 Difference]: Without dead ends: 27451 [2020-10-26 22:42:22,841 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 22:42:22,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27451 states. [2020-10-26 22:42:23,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27451 to 26801. [2020-10-26 22:42:23,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26801 states. [2020-10-26 22:42:23,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26801 states to 26801 states and 31426 transitions. [2020-10-26 22:42:23,403 INFO L78 Accepts]: Start accepts. Automaton has 26801 states and 31426 transitions. Word has length 442 [2020-10-26 22:42:23,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:23,404 INFO L481 AbstractCegarLoop]: Abstraction has 26801 states and 31426 transitions. [2020-10-26 22:42:23,404 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:42:23,404 INFO L276 IsEmpty]: Start isEmpty. Operand 26801 states and 31426 transitions. [2020-10-26 22:42:23,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 448 [2020-10-26 22:42:23,428 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:23,429 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 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] [2020-10-26 22:42:23,429 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-26 22:42:23,429 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:23,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:23,430 INFO L82 PathProgramCache]: Analyzing trace with hash 487061313, now seen corresponding path program 1 times [2020-10-26 22:42:23,430 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:23,430 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1015630629] [2020-10-26 22:42:23,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:23,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:23,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:23,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:26,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:28,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:28,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 465 [2020-10-26 22:42:28,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:42:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-26 22:42:28,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-26 22:42:28,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-26 22:42:28,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:28,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:28,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:28,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:28,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:28,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:42:28,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:28,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:28,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:28,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:28,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:28,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:28,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:28,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:42:28,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:42:28,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:28,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:28,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:28,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:42:28,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:28,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:28,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:42:28,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:28,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-26 22:42:28,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:28,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-26 22:42:28,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:28,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:42:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:28,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:29,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:29,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-26 22:42:29,064 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:29,064 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-26 22:42:29,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:29,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-26 22:42:29,065 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:29,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 330 [2020-10-26 22:42:29,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:29,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:29,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:29,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:42:29,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:29,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-26 22:42:29,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:29,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-26 22:42:29,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:29,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:29,406 INFO L134 CoverageAnalysis]: Checked inductivity of 658 backedges. 315 proven. 88 refuted. 0 times theorem prover too weak. 255 trivial. 0 not checked. [2020-10-26 22:42:29,406 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1015630629] [2020-10-26 22:42:29,407 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:29,407 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:42:29,407 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783681643] [2020-10-26 22:42:29,408 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:42:29,408 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:29,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:42:29,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:42:29,409 INFO L87 Difference]: Start difference. First operand 26801 states and 31426 transitions. Second operand 7 states. [2020-10-26 22:42:33,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:33,575 INFO L93 Difference]: Finished difference Result 51927 states and 60922 transitions. [2020-10-26 22:42:33,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 22:42:33,576 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 447 [2020-10-26 22:42:33,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:33,630 INFO L225 Difference]: With dead ends: 51927 [2020-10-26 22:42:33,631 INFO L226 Difference]: Without dead ends: 27840 [2020-10-26 22:42:33,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:42:33,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27840 states. [2020-10-26 22:42:34,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27840 to 26989. [2020-10-26 22:42:34,079 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26989 states. [2020-10-26 22:42:34,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26989 states to 26989 states and 31615 transitions. [2020-10-26 22:42:34,141 INFO L78 Accepts]: Start accepts. Automaton has 26989 states and 31615 transitions. Word has length 447 [2020-10-26 22:42:34,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:34,142 INFO L481 AbstractCegarLoop]: Abstraction has 26989 states and 31615 transitions. [2020-10-26 22:42:34,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:42:34,142 INFO L276 IsEmpty]: Start isEmpty. Operand 26989 states and 31615 transitions. [2020-10-26 22:42:34,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 457 [2020-10-26 22:42:34,157 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:34,157 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:42:34,157 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-26 22:42:34,157 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:34,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:34,158 INFO L82 PathProgramCache]: Analyzing trace with hash 1861424144, now seen corresponding path program 1 times [2020-10-26 22:42:34,158 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:34,161 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [805023824] [2020-10-26 22:42:34,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:34,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:34,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:34,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:35,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:38,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:38,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 474 [2020-10-26 22:42:38,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 22:42:38,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4279 [2020-10-26 22:42:38,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:38,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-26 22:42:38,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 22:42:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 357 [2020-10-26 22:42:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:38,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:38,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:38,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:38,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:38,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:38,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:38,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 22:42:38,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:38,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:38,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:38,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 22:42:38,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:38,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:38,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:38,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:38,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:38,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-26 22:42:38,907 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 140 [2020-10-26 22:42:38,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:38,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-26 22:42:38,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:38,972 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-26 22:42:38,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:39,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:39,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:39,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-26 22:42:39,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:39,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-26 22:42:39,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 22:42:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:39,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-26 22:42:39,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:39,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2020-10-26 22:42:39,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:39,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:39,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:39,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:39,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-26 22:42:39,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 22:42:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 274 [2020-10-26 22:42:39,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:39,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-26 22:42:39,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:39,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 357 [2020-10-26 22:42:39,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:39,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:39,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:39,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-26 22:42:39,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:39,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-26 22:42:39,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:39,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:39,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 69 [2020-10-26 22:42:39,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:39,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:39,786 INFO L134 CoverageAnalysis]: Checked inductivity of 623 backedges. 201 proven. 290 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-10-26 22:42:39,786 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [805023824] [2020-10-26 22:42:39,786 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:39,786 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 22:42:39,787 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1205731001] [2020-10-26 22:42:39,787 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 22:42:39,787 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:39,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 22:42:39,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-10-26 22:42:39,788 INFO L87 Difference]: Start difference. First operand 26989 states and 31615 transitions. Second operand 10 states. [2020-10-26 22:42:39,979 WARN L193 SmtUtils]: Spent 155.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-26 22:42:44,108 WARN L193 SmtUtils]: Spent 213.00 ms on a formula simplification. DAG size of input: 78 DAG size of output: 74 [2020-10-26 22:42:44,665 WARN L193 SmtUtils]: Spent 167.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 70 [2020-10-26 22:42:45,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:45,662 INFO L93 Difference]: Finished difference Result 56421 states and 66386 transitions. [2020-10-26 22:42:45,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-26 22:42:45,669 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 456 [2020-10-26 22:42:45,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:45,737 INFO L225 Difference]: With dead ends: 56421 [2020-10-26 22:42:45,737 INFO L226 Difference]: Without dead ends: 32146 [2020-10-26 22:42:45,766 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=120, Invalid=342, Unknown=0, NotChecked=0, Total=462 [2020-10-26 22:42:45,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32146 states. [2020-10-26 22:42:46,359 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32146 to 31855. [2020-10-26 22:42:46,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31855 states. [2020-10-26 22:42:46,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31855 states to 31855 states and 37376 transitions. [2020-10-26 22:42:46,428 INFO L78 Accepts]: Start accepts. Automaton has 31855 states and 37376 transitions. Word has length 456 [2020-10-26 22:42:46,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:46,428 INFO L481 AbstractCegarLoop]: Abstraction has 31855 states and 37376 transitions. [2020-10-26 22:42:46,428 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 22:42:46,428 INFO L276 IsEmpty]: Start isEmpty. Operand 31855 states and 37376 transitions. [2020-10-26 22:42:46,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2020-10-26 22:42:46,439 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:46,440 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 22:42:46,440 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-26 22:42:46,440 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:46,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:46,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1710369803, now seen corresponding path program 1 times [2020-10-26 22:42:46,440 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:46,441 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098333688] [2020-10-26 22:42:46,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:46,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:46,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:46,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:47,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:48,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:51,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:51,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 480 [2020-10-26 22:42:51,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 22:42:51,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-26 22:42:51,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 212 [2020-10-26 22:42:51,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 22:42:51,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:51,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:42:51,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:51,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:51,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:51,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:42:51,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:51,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:42:51,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:51,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:51,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:51,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:42:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:51,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:51,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:51,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:42:51,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-26 22:42:51,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:51,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:51,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:51,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:42:51,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:51,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:52,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:52,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-26 22:42:52,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:52,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-26 22:42:52,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:42:52,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:42:52,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-26 22:42:52,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:52,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 22:42:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:52,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:52,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:52,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-26 22:42:52,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:52,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-26 22:42:52,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:52,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:42:52,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:42:52,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-26 22:42:52,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:52,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 317 [2020-10-26 22:42:52,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:52,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:52,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:42:52,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-26 22:42:52,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:42:52,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-26 22:42:52,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:42:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:42:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 115 [2020-10-26 22:42:52,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:42:52,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:42:52,771 INFO L134 CoverageAnalysis]: Checked inductivity of 697 backedges. 312 proven. 108 refuted. 0 times theorem prover too weak. 277 trivial. 0 not checked. [2020-10-26 22:42:52,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098333688] [2020-10-26 22:42:52,771 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:42:52,771 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 22:42:52,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430729584] [2020-10-26 22:42:52,772 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 22:42:52,772 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:42:52,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 22:42:52,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 22:42:52,773 INFO L87 Difference]: Start difference. First operand 31855 states and 37376 transitions. Second operand 7 states. [2020-10-26 22:42:52,925 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-26 22:42:56,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:42:56,752 INFO L93 Difference]: Finished difference Result 58785 states and 69013 transitions. [2020-10-26 22:42:56,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 22:42:56,753 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 462 [2020-10-26 22:42:56,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:42:56,839 INFO L225 Difference]: With dead ends: 58785 [2020-10-26 22:42:56,839 INFO L226 Difference]: Without dead ends: 31752 [2020-10-26 22:42:56,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 22:42:56,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31752 states. [2020-10-26 22:42:57,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31752 to 30491. [2020-10-26 22:42:57,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30491 states. [2020-10-26 22:42:57,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30491 states to 30491 states and 35228 transitions. [2020-10-26 22:42:57,516 INFO L78 Accepts]: Start accepts. Automaton has 30491 states and 35228 transitions. Word has length 462 [2020-10-26 22:42:57,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:42:57,516 INFO L481 AbstractCegarLoop]: Abstraction has 30491 states and 35228 transitions. [2020-10-26 22:42:57,516 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 22:42:57,517 INFO L276 IsEmpty]: Start isEmpty. Operand 30491 states and 35228 transitions. [2020-10-26 22:42:57,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 465 [2020-10-26 22:42:57,530 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:42:57,531 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-26 22:42:57,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-26 22:42:57,531 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:42:57,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:42:57,532 INFO L82 PathProgramCache]: Analyzing trace with hash 635316047, now seen corresponding path program 1 times [2020-10-26 22:42:57,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:42:57,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1208431362] [2020-10-26 22:42:57,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:42:57,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:42:57,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:57,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:58,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:42:59,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:02,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:02,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 482 [2020-10-26 22:43:02,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 22:43:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-26 22:43:02,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 281 [2020-10-26 22:43:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-26 22:43:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:02,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:02,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:02,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:02,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:02,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:02,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:02,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 22:43:02,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:02,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:02,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:02,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:02,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:02,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:02,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:02,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:02,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:02,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:43:02,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:02,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-26 22:43:02,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:02,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:02,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:02,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:02,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-26 22:43:02,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:02,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:03,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:03,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-26 22:43:03,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:03,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-26 22:43:03,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:03,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-10-26 22:43:03,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:03,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 277 [2020-10-26 22:43:03,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:03,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:03,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:03,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-26 22:43:03,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:03,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-26 22:43:03,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:03,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 22:43:03,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-26 22:43:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:03,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 347 [2020-10-26 22:43:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:03,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:03,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:03,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-26 22:43:03,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-26 22:43:03,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 87 [2020-10-26 22:43:03,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:03,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:03,549 INFO L134 CoverageAnalysis]: Checked inductivity of 629 backedges. 259 proven. 69 refuted. 0 times theorem prover too weak. 301 trivial. 0 not checked. [2020-10-26 22:43:03,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1208431362] [2020-10-26 22:43:03,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:43:03,550 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-26 22:43:03,550 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189812536] [2020-10-26 22:43:03,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 22:43:03,550 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:03,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 22:43:03,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-26 22:43:03,551 INFO L87 Difference]: Start difference. First operand 30491 states and 35228 transitions. Second operand 8 states. [2020-10-26 22:43:09,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 22:43:09,449 INFO L93 Difference]: Finished difference Result 62443 states and 72153 transitions. [2020-10-26 22:43:09,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-26 22:43:09,451 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 464 [2020-10-26 22:43:09,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 22:43:09,512 INFO L225 Difference]: With dead ends: 62443 [2020-10-26 22:43:09,512 INFO L226 Difference]: Without dead ends: 32342 [2020-10-26 22:43:09,536 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2020-10-26 22:43:09,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32342 states. [2020-10-26 22:43:10,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32342 to 31427. [2020-10-26 22:43:10,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31427 states. [2020-10-26 22:43:10,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31427 states to 31427 states and 35998 transitions. [2020-10-26 22:43:10,143 INFO L78 Accepts]: Start accepts. Automaton has 31427 states and 35998 transitions. Word has length 464 [2020-10-26 22:43:10,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 22:43:10,144 INFO L481 AbstractCegarLoop]: Abstraction has 31427 states and 35998 transitions. [2020-10-26 22:43:10,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 22:43:10,144 INFO L276 IsEmpty]: Start isEmpty. Operand 31427 states and 35998 transitions. [2020-10-26 22:43:10,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 470 [2020-10-26 22:43:10,158 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 22:43:10,158 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:43:10,159 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-26 22:43:10,159 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 22:43:10,159 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 22:43:10,159 INFO L82 PathProgramCache]: Analyzing trace with hash 54019451, now seen corresponding path program 1 times [2020-10-26 22:43:10,160 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 22:43:10,160 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1622555205] [2020-10-26 22:43:10,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 22:43:10,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:10,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:10,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:10,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 485 [2020-10-26 22:43:10,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:10,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-26 22:43:10,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 22:43:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 447 [2020-10-26 22:43:10,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-26 22:43:10,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:11,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 22:43:11,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:11,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:11,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:11,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 22:43:11,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:11,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-26 22:43:11,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:11,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:11,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:11,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 22:43:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:11,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:11,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:11,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-26 22:43:11,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 22:43:11,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:11,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:11,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:11,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2020-10-26 22:43:11,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:11,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:11,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:11,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-26 22:43:11,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:11,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-26 22:43:11,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 22:43:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:11,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 22:43:11,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:11,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-26 22:43:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 22:43:11,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 22:43:11,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 22:43:11,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-26 22:43:11,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 22:43:11,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-26 22:43:11,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 22:43:11,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 22:43:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 22:43:11,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 181 [2020-10-26 22:43:11,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 22:43:11,692 INFO L134 CoverageAnalysis]: Checked inductivity of 447 backedges. 87 proven. 3 refuted. 0 times theorem prover too weak. 357 trivial. 0 not checked. [2020-10-26 22:43:11,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1622555205] [2020-10-26 22:43:11,693 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 22:43:11,693 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-26 22:43:11,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969916023] [2020-10-26 22:43:11,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 22:43:11,694 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 22:43:11,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 22:43:11,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 22:43:11,694 INFO L87 Difference]: Start difference. First operand 31427 states and 35998 transitions. Second operand 5 states.