/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.6 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-28 12:24:37,881 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-28 12:24:37,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-28 12:24:37,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-28 12:24:37,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-28 12:24:37,923 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-28 12:24:37,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-28 12:24:37,928 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-28 12:24:37,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-28 12:24:37,932 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-28 12:24:37,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-28 12:24:37,936 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-28 12:24:37,936 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-28 12:24:37,938 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-28 12:24:37,939 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-28 12:24:37,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-28 12:24:37,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-28 12:24:37,943 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-28 12:24:37,946 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-28 12:24:37,948 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-28 12:24:37,951 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-28 12:24:37,953 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-28 12:24:37,954 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-28 12:24:37,956 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-28 12:24:37,960 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-28 12:24:37,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-28 12:24:37,982 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-28 12:24:37,984 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-28 12:24:37,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-28 12:24:37,991 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-28 12:24:37,991 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-28 12:24:37,992 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-28 12:24:37,995 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-28 12:24:37,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-28 12:24:37,998 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-28 12:24:37,998 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-28 12:24:37,999 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-28 12:24:38,000 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-28 12:24:38,000 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-28 12:24:38,001 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-28 12:24:38,002 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-28 12:24:38,004 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 [2020-10-28 12:24:38,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-28 12:24:38,063 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-28 12:24:38,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-28 12:24:38,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-28 12:24:38,065 INFO L138 SettingsManager]: * Use SBE=true [2020-10-28 12:24:38,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-28 12:24:38,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-28 12:24:38,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-28 12:24:38,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-28 12:24:38,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-28 12:24:38,067 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-28 12:24:38,067 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-28 12:24:38,067 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-28 12:24:38,067 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-28 12:24:38,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-28 12:24:38,068 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-28 12:24:38,068 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-28 12:24:38,068 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-28 12:24:38,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-28 12:24:38,069 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-28 12:24:38,069 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-28 12:24:38,069 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-28 12:24:38,069 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-28 12:24:38,070 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-28 12:24:38,070 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-28 12:24:38,070 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-28 12:24:38,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-28 12:24:38,070 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-28 12:24:38,071 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-28 12:24:38,071 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.6;log-additional-information=true;unknown-allowed=true; [2020-10-28 12:24:38,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-28 12:24:38,507 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-28 12:24:38,510 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-28 12:24:38,512 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-28 12:24:38,513 INFO L275 PluginConnector]: CDTParser initialized [2020-10-28 12:24:38,514 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2020-10-28 12:24:38,598 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e05a6d23/d351d86691214546b19b92bc60676787/FLAG3290ad18f [2020-10-28 12:24:39,733 INFO L306 CDTParser]: Found 1 translation units. [2020-10-28 12:24:39,734 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label48.c [2020-10-28 12:24:39,770 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e05a6d23/d351d86691214546b19b92bc60676787/FLAG3290ad18f [2020-10-28 12:24:40,178 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0e05a6d23/d351d86691214546b19b92bc60676787 [2020-10-28 12:24:40,184 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-28 12:24:40,196 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-28 12:24:40,202 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:40,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-28 12:24:40,207 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-28 12:24:40,208 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:40" (1/1) ... [2020-10-28 12:24:40,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d4d9770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:40, skipping insertion in model container [2020-10-28 12:24:40,214 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.10 12:24:40" (1/1) ... [2020-10-28 12:24:40,224 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-28 12:24:40,400 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-28 12:24:41,747 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:41,769 INFO L203 MainTranslator]: Completed pre-run [2020-10-28 12:24:42,597 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-28 12:24:42,666 INFO L208 MainTranslator]: Completed translation [2020-10-28 12:24:42,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42 WrapperNode [2020-10-28 12:24:42,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-28 12:24:42,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-28 12:24:42,669 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-28 12:24:42,669 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-28 12:24:42,685 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42" (1/1) ... [2020-10-28 12:24:42,688 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42" (1/1) ... [2020-10-28 12:24:42,776 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42" (1/1) ... [2020-10-28 12:24:42,776 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42" (1/1) ... [2020-10-28 12:24:42,912 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42" (1/1) ... [2020-10-28 12:24:42,953 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42" (1/1) ... [2020-10-28 12:24:42,999 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42" (1/1) ... [2020-10-28 12:24:43,055 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-28 12:24:43,057 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-28 12:24:43,058 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-28 12:24:43,058 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-28 12:24:43,059 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42" (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 [2020-10-28 12:24:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-28 12:24:43,159 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-28 12:24:43,160 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-28 12:24:43,160 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-28 12:24:43,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-28 12:24:43,161 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-28 12:24:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-28 12:24:43,162 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-28 12:24:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-28 12:24:43,162 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-28 12:24:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-28 12:24:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-28 12:24:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-28 12:24:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-28 12:24:43,164 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-28 12:24:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-28 12:24:43,165 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-28 12:24:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-28 12:24:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-28 12:24:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-28 12:24:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-28 12:24:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-28 12:24:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-28 12:24:43,166 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-28 12:24:43,167 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-28 12:24:49,016 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-28 12:24:49,017 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-28 12:24:49,021 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:49 BoogieIcfgContainer [2020-10-28 12:24:49,022 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-28 12:24:49,024 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-28 12:24:49,024 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-28 12:24:49,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-28 12:24:49,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.10 12:24:40" (1/3) ... [2020-10-28 12:24:49,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f7291e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:49, skipping insertion in model container [2020-10-28 12:24:49,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.10 12:24:42" (2/3) ... [2020-10-28 12:24:49,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50f7291e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.10 12:24:49, skipping insertion in model container [2020-10-28 12:24:49,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.10 12:24:49" (3/3) ... [2020-10-28 12:24:49,034 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label48.c [2020-10-28 12:24:49,048 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-28 12:24:49,056 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-28 12:24:49,074 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-28 12:24:49,116 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-28 12:24:49,116 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-28 12:24:49,116 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-28 12:24:49,117 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-28 12:24:49,117 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-28 12:24:49,117 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-28 12:24:49,117 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-28 12:24:49,117 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-28 12:24:49,161 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-28 12:24:49,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-28 12:24:49,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:24:49,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:24:49,171 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:24:49,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:24:49,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1311531060, now seen corresponding path program 1 times [2020-10-28 12:24:49,191 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:24:49,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700814190] [2020-10-28 12:24:49,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:24:49,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:49,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:50,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:50,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-28 12:24:50,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:50,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-28 12:24:50,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:50,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:50,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:24:50,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:24:50,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-28 12:24:50,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-28 12:24:50,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:24:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:24:50,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:24:50,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:24:50,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:24:50,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:24:50,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-28 12:24:50,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:24:50,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:24:50,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:24:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:24:50,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:24:50,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:24:50,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:24:50,313 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700814190] [2020-10-28 12:24:50,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:24:50,317 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-28 12:24:50,318 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1214682498] [2020-10-28 12:24:50,325 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-28 12:24:50,326 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:24:50,348 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-28 12:24:50,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-28 12:24:50,353 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-28 12:25:02,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:02,207 INFO L93 Difference]: Finished difference Result 2476 states and 4742 transitions. [2020-10-28 12:25:02,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:25:02,211 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2020-10-28 12:25:02,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:02,255 INFO L225 Difference]: With dead ends: 2476 [2020-10-28 12:25:02,256 INFO L226 Difference]: Without dead ends: 1569 [2020-10-28 12:25:02,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:25:02,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-28 12:25:02,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1554. [2020-10-28 12:25:02,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1554 states. [2020-10-28 12:25:02,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1554 states to 1554 states and 2522 transitions. [2020-10-28 12:25:02,460 INFO L78 Accepts]: Start accepts. Automaton has 1554 states and 2522 transitions. Word has length 17 [2020-10-28 12:25:02,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:02,461 INFO L481 AbstractCegarLoop]: Abstraction has 1554 states and 2522 transitions. [2020-10-28 12:25:02,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-28 12:25:02,461 INFO L276 IsEmpty]: Start isEmpty. Operand 1554 states and 2522 transitions. [2020-10-28 12:25:02,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2020-10-28 12:25:02,469 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:02,470 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:25:02,470 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-28 12:25:02,471 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:02,473 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:02,474 INFO L82 PathProgramCache]: Analyzing trace with hash -2014086859, now seen corresponding path program 1 times [2020-10-28 12:25:02,474 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:02,474 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1721944391] [2020-10-28 12:25:02,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:02,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:02,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:03,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:03,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:25:03,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:03,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 469 [2020-10-28 12:25:03,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:03,018 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:03,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:03,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:25:03,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 12:25:03,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-28 12:25:03,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:03,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:03,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:03,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:03,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:03,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:03,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-28 12:25:03,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:03,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:03,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:03,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:03,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-10-28 12:25:03,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:03,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:03,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:03,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:03,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:25:03,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:03,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-28 12:25:03,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:03,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:03,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:03,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:03,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:25:03,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:03,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1721944391] [2020-10-28 12:25:03,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:03,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:25:03,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689892082] [2020-10-28 12:25:03,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:25:03,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:03,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:25:03,529 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:25:03,529 INFO L87 Difference]: Start difference. First operand 1554 states and 2522 transitions. Second operand 5 states. [2020-10-28 12:25:15,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:15,771 INFO L93 Difference]: Finished difference Result 4674 states and 7651 transitions. [2020-10-28 12:25:15,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:25:15,775 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 92 [2020-10-28 12:25:15,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:15,797 INFO L225 Difference]: With dead ends: 4674 [2020-10-28 12:25:15,797 INFO L226 Difference]: Without dead ends: 3126 [2020-10-28 12:25:15,803 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 [2020-10-28 12:25:15,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3126 states. [2020-10-28 12:25:15,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3126 to 3110. [2020-10-28 12:25:15,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3110 states. [2020-10-28 12:25:15,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 4248 transitions. [2020-10-28 12:25:15,933 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 4248 transitions. Word has length 92 [2020-10-28 12:25:15,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:15,935 INFO L481 AbstractCegarLoop]: Abstraction has 3110 states and 4248 transitions. [2020-10-28 12:25:15,935 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:25:15,935 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 4248 transitions. [2020-10-28 12:25:15,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2020-10-28 12:25:15,946 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:15,947 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:25:15,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-28 12:25:15,948 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:15,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:15,949 INFO L82 PathProgramCache]: Analyzing trace with hash -1022756303, now seen corresponding path program 1 times [2020-10-28 12:25:15,950 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:15,950 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1008902959] [2020-10-28 12:25:15,950 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:16,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:16,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:16,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:17,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:17,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-10-28 12:25:17,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:17,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1068 [2020-10-28 12:25:17,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:17,083 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:17,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:17,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-10-28 12:25:17,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-28 12:25:17,202 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:17,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:17,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:17,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:17,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:17,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:17,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-28 12:25:17,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:17,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:17,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:17,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:17,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:17,453 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:17,453 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:25:17,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:17,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-28 12:25:17,454 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:17,454 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:17,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-28 12:25:17,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:17,551 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:17,551 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1008902959] [2020-10-28 12:25:17,552 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:17,552 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:25:17,552 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926269052] [2020-10-28 12:25:17,553 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:17,553 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:17,554 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:17,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:17,556 INFO L87 Difference]: Start difference. First operand 3110 states and 4248 transitions. Second operand 7 states. [2020-10-28 12:25:33,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:33,012 INFO L93 Difference]: Finished difference Result 7907 states and 11378 transitions. [2020-10-28 12:25:33,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:25:33,013 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 95 [2020-10-28 12:25:33,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:33,050 INFO L225 Difference]: With dead ends: 7907 [2020-10-28 12:25:33,050 INFO L226 Difference]: Without dead ends: 4803 [2020-10-28 12:25:33,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:25:33,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2020-10-28 12:25:33,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4730. [2020-10-28 12:25:33,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4730 states. [2020-10-28 12:25:33,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4730 states to 4730 states and 6333 transitions. [2020-10-28 12:25:33,269 INFO L78 Accepts]: Start accepts. Automaton has 4730 states and 6333 transitions. Word has length 95 [2020-10-28 12:25:33,271 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:33,276 INFO L481 AbstractCegarLoop]: Abstraction has 4730 states and 6333 transitions. [2020-10-28 12:25:33,276 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:33,276 INFO L276 IsEmpty]: Start isEmpty. Operand 4730 states and 6333 transitions. [2020-10-28 12:25:33,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-10-28 12:25:33,282 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:33,283 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:25:33,283 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-28 12:25:33,283 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:33,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:33,284 INFO L82 PathProgramCache]: Analyzing trace with hash -1108651695, now seen corresponding path program 1 times [2020-10-28 12:25:33,284 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:33,286 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [940303035] [2020-10-28 12:25:33,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:33,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:33,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:34,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:34,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-28 12:25:34,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:34,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 712 [2020-10-28 12:25:34,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:34,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:25:34,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:25:34,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:34,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:34,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:34,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:34,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:34,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:34,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:34,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-28 12:25:34,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:34,177 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:34,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:25:34,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:34,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:34,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:34,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:34,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:25:34,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-28 12:25:34,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:34,376 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:34,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:25:34,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:34,528 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-28 12:25:34,529 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [940303035] [2020-10-28 12:25:34,529 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-28 12:25:34,529 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-28 12:25:34,529 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235268024] [2020-10-28 12:25:34,531 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:34,532 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:34,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:34,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:34,544 INFO L87 Difference]: Start difference. First operand 4730 states and 6333 transitions. Second operand 7 states. [2020-10-28 12:25:56,599 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:25:56,599 INFO L93 Difference]: Finished difference Result 14501 states and 19813 transitions. [2020-10-28 12:25:56,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:25:56,603 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 106 [2020-10-28 12:25:56,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:25:56,661 INFO L225 Difference]: With dead ends: 14501 [2020-10-28 12:25:56,661 INFO L226 Difference]: Without dead ends: 9777 [2020-10-28 12:25:56,676 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-28 12:25:56,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9777 states. [2020-10-28 12:25:56,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9777 to 9642. [2020-10-28 12:25:56,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9642 states. [2020-10-28 12:25:56,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9642 states to 9642 states and 12092 transitions. [2020-10-28 12:25:56,957 INFO L78 Accepts]: Start accepts. Automaton has 9642 states and 12092 transitions. Word has length 106 [2020-10-28 12:25:56,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:25:56,959 INFO L481 AbstractCegarLoop]: Abstraction has 9642 states and 12092 transitions. [2020-10-28 12:25:56,959 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:25:56,960 INFO L276 IsEmpty]: Start isEmpty. Operand 9642 states and 12092 transitions. [2020-10-28 12:25:56,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2020-10-28 12:25:56,965 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:25:56,966 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:25:56,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-28 12:25:56,966 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:25:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:25:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash -1392674138, now seen corresponding path program 1 times [2020-10-28 12:25:56,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:25:56,969 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985478866] [2020-10-28 12:25:56,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:25:57,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:57,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:57,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:57,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:58,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:59,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:59,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-28 12:25:59,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:25:59,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2199 [2020-10-28 12:25:59,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:59,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:25:59,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:25:59,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:25:59,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:25:59,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:25:59,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:59,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:59,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:59,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:25:59,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:59,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-28 12:25:59,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:59,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:25:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:59,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:25:59,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:59,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:25:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:59,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:59,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:59,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:25:59,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:25:59,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-28 12:25:59,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:59,465 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:25:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:25:59,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:25:59,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:59,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:25:59,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:25:59,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:59,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:25:59,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:25:59,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:25:59,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:25:59,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-10-28 12:25:59,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:25:59,712 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:25:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:25:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:25:59,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:25:59,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:25:59,817 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 76 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-28 12:25:59,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985478866] [2020-10-28 12:25:59,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:25:59,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:25:59,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328597539] [2020-10-28 12:25:59,820 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:25:59,821 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:25:59,821 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:25:59,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:25:59,822 INFO L87 Difference]: Start difference. First operand 9642 states and 12092 transitions. Second operand 7 states. [2020-10-28 12:26:20,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:20,643 INFO L93 Difference]: Finished difference Result 24481 states and 32907 transitions. [2020-10-28 12:26:20,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-28 12:26:20,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 164 [2020-10-28 12:26:20,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:20,742 INFO L225 Difference]: With dead ends: 24481 [2020-10-28 12:26:20,742 INFO L226 Difference]: Without dead ends: 14845 [2020-10-28 12:26:20,775 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:26:20,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14845 states. [2020-10-28 12:26:21,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14845 to 14653. [2020-10-28 12:26:21,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14653 states. [2020-10-28 12:26:21,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14653 states to 14653 states and 18327 transitions. [2020-10-28 12:26:21,297 INFO L78 Accepts]: Start accepts. Automaton has 14653 states and 18327 transitions. Word has length 164 [2020-10-28 12:26:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:21,298 INFO L481 AbstractCegarLoop]: Abstraction has 14653 states and 18327 transitions. [2020-10-28 12:26:21,298 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:21,298 INFO L276 IsEmpty]: Start isEmpty. Operand 14653 states and 18327 transitions. [2020-10-28 12:26:21,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 179 [2020-10-28 12:26:21,301 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:21,302 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-28 12:26:21,302 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-28 12:26:21,302 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:21,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:21,303 INFO L82 PathProgramCache]: Analyzing trace with hash 358067842, now seen corresponding path program 1 times [2020-10-28 12:26:21,303 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:21,303 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1900123623] [2020-10-28 12:26:21,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:21,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:21,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:22,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:23,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:23,167 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 192 [2020-10-28 12:26:23,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:26:23,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1810 [2020-10-28 12:26:23,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:23,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:23,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:23,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-28 12:26:23,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-28 12:26:23,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:23,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:23,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:23,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:23,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:23,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:23,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:23,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:26:23,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:23,302 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:23,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:23,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:23,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:23,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:23,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-28 12:26:23,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:23,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-28 12:26:23,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:23,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:23,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-28 12:26:23,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:23,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-28 12:26:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:23,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:23,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:23,637 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-28 12:26:23,637 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:23,637 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-28 12:26:23,637 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:23,638 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:26:23,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-28 12:26:23,638 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:23,746 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 90 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-28 12:26:23,747 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1900123623] [2020-10-28 12:26:23,748 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:23,748 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:26:23,749 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [910967524] [2020-10-28 12:26:23,749 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:26:23,750 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:23,751 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:26:23,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:26:23,752 INFO L87 Difference]: Start difference. First operand 14653 states and 18327 transitions. Second operand 7 states. [2020-10-28 12:26:28,997 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:26:43,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:26:43,561 INFO L93 Difference]: Finished difference Result 31187 states and 41248 transitions. [2020-10-28 12:26:43,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:26:43,563 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 178 [2020-10-28 12:26:43,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:26:43,615 INFO L225 Difference]: With dead ends: 31187 [2020-10-28 12:26:43,616 INFO L226 Difference]: Without dead ends: 13278 [2020-10-28 12:26:43,658 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:26:43,676 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13278 states. [2020-10-28 12:26:43,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13278 to 12998. [2020-10-28 12:26:43,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12998 states. [2020-10-28 12:26:44,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12998 states to 12998 states and 15705 transitions. [2020-10-28 12:26:44,005 INFO L78 Accepts]: Start accepts. Automaton has 12998 states and 15705 transitions. Word has length 178 [2020-10-28 12:26:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:26:44,006 INFO L481 AbstractCegarLoop]: Abstraction has 12998 states and 15705 transitions. [2020-10-28 12:26:44,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:26:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 12998 states and 15705 transitions. [2020-10-28 12:26:44,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 266 [2020-10-28 12:26:44,011 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:26:44,012 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-28 12:26:44,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-28 12:26:44,013 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:26:44,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:26:44,013 INFO L82 PathProgramCache]: Analyzing trace with hash -443057344, now seen corresponding path program 1 times [2020-10-28 12:26:44,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:26:44,014 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2035154131] [2020-10-28 12:26:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:26:44,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:44,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:44,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:44,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 279 [2020-10-28 12:26:44,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:44,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-10-28 12:26:44,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:44,696 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:26:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 260 [2020-10-28 12:26:44,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-28 12:26:44,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:44,873 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:26:44,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:26:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:44,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:44,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:44,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:26:44,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:44,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-28 12:26:44,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:44,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:44,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:44,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:44,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:44,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:26:44,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:26:44,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:45,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:45,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:26:45,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:45,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-28 12:26:45,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:45,034 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:45,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:26:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:45,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:26:45,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:45,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:26:45,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:26:45,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:26:45,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:26:45,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-28 12:26:45,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:26:45,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-28 12:26:45,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:26:45,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:26:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:26:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:26:45,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-28 12:26:45,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:26:45,434 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 19 proven. 2 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-10-28 12:26:45,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2035154131] [2020-10-28 12:26:45,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:26:45,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-28 12:26:45,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162783513] [2020-10-28 12:26:45,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-28 12:26:45,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:26:45,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-28 12:26:45,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-28 12:26:45,438 INFO L87 Difference]: Start difference. First operand 12998 states and 15705 transitions. Second operand 5 states. [2020-10-28 12:27:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:02,897 INFO L93 Difference]: Finished difference Result 36356 states and 45581 transitions. [2020-10-28 12:27:02,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-28 12:27:02,900 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 265 [2020-10-28 12:27:02,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:03,010 INFO L225 Difference]: With dead ends: 36356 [2020-10-28 12:27:03,010 INFO L226 Difference]: Without dead ends: 24131 [2020-10-28 12:27:03,045 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:27:03,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24131 states. [2020-10-28 12:27:03,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24131 to 22590. [2020-10-28 12:27:03,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22590 states. [2020-10-28 12:27:03,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22590 states to 22590 states and 27970 transitions. [2020-10-28 12:27:03,643 INFO L78 Accepts]: Start accepts. Automaton has 22590 states and 27970 transitions. Word has length 265 [2020-10-28 12:27:03,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:03,644 INFO L481 AbstractCegarLoop]: Abstraction has 22590 states and 27970 transitions. [2020-10-28 12:27:03,644 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-28 12:27:03,644 INFO L276 IsEmpty]: Start isEmpty. Operand 22590 states and 27970 transitions. [2020-10-28 12:27:03,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 311 [2020-10-28 12:27:03,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:03,651 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:27:03,652 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-28 12:27:03,652 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:03,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:03,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1352916921, now seen corresponding path program 1 times [2020-10-28 12:27:03,653 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:03,655 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [644588201] [2020-10-28 12:27:03,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:03,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:03,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:03,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:07,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:07,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 326 [2020-10-28 12:27:07,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:07,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4043 [2020-10-28 12:27:07,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:07,794 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-28 12:27:07,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 154 [2020-10-28 12:27:07,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:07,946 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:07,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:07,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:07,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:07,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:07,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-28 12:27:07,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:07,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:07,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:07,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:07,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-28 12:27:07,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:08,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:08,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:08,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:08,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-28 12:27:08,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 226 [2020-10-28 12:27:08,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:08,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-28 12:27:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:08,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-28 12:27:08,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:08,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:08,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:08,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:27:08,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:08,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-28 12:27:08,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:08,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:27:08,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:08,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-28 12:27:08,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2020-10-28 12:27:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:08,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:08,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:08,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:27:08,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:08,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-28 12:27:08,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:08,840 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 12:27:08,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:08,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:09,228 INFO L134 CoverageAnalysis]: Checked inductivity of 244 backedges. 27 proven. 135 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2020-10-28 12:27:09,229 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [644588201] [2020-10-28 12:27:09,229 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:09,229 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:27:09,230 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1485459974] [2020-10-28 12:27:09,230 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:09,230 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:09,231 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:09,231 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:09,231 INFO L87 Difference]: Start difference. First operand 22590 states and 27970 transitions. Second operand 7 states. [2020-10-28 12:27:09,369 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 72 [2020-10-28 12:27:24,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:24,360 INFO L93 Difference]: Finished difference Result 44969 states and 58300 transitions. [2020-10-28 12:27:24,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-28 12:27:24,365 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 310 [2020-10-28 12:27:24,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:24,461 INFO L225 Difference]: With dead ends: 44969 [2020-10-28 12:27:24,461 INFO L226 Difference]: Without dead ends: 23152 [2020-10-28 12:27:24,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-28 12:27:24,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23152 states. [2020-10-28 12:27:25,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23152 to 22807. [2020-10-28 12:27:25,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22807 states. [2020-10-28 12:27:25,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22807 states to 22807 states and 28420 transitions. [2020-10-28 12:27:25,325 INFO L78 Accepts]: Start accepts. Automaton has 22807 states and 28420 transitions. Word has length 310 [2020-10-28 12:27:25,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:25,326 INFO L481 AbstractCegarLoop]: Abstraction has 22807 states and 28420 transitions. [2020-10-28 12:27:25,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-28 12:27:25,326 INFO L276 IsEmpty]: Start isEmpty. Operand 22807 states and 28420 transitions. [2020-10-28 12:27:25,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2020-10-28 12:27:25,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:25,334 INFO L422 BasicCegarLoop]: trace histogram [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, 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] [2020-10-28 12:27:25,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-28 12:27:25,334 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:25,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:25,336 INFO L82 PathProgramCache]: Analyzing trace with hash -953573995, now seen corresponding path program 1 times [2020-10-28 12:27:25,336 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:25,337 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1370834583] [2020-10-28 12:27:25,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:25,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:25,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:26,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:27,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:30,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:30,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-10-28 12:27:30,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-28 12:27:30,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4735 [2020-10-28 12:27:30,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:30,159 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-28 12:27:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 240 [2020-10-28 12:27:30,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-28 12:27:30,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:30,391 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:27:30,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:30,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:30,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:30,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:30,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:30,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:30,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:27:30,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:30,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:30,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:30,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:30,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:30,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:30,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:30,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:30,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:30,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:30,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-10-28 12:27:30,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:30,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-28 12:27:30,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:30,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:30,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:30,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:30,574 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2020-10-28 12:27:30,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:30,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:30,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:30,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 84 [2020-10-28 12:27:30,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:30,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-28 12:27:30,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:30,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-28 12:27:30,669 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:30,730 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 236 [2020-10-28 12:27:30,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:30,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:30,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:30,899 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:30,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-28 12:27:30,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-28 12:27:30,900 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 150 [2020-10-28 12:27:30,900 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:30,900 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:30,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:30,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:30,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-28 12:27:30,901 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:31,070 INFO L134 CoverageAnalysis]: Checked inductivity of 266 backedges. 33 proven. 3 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2020-10-28 12:27:31,076 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1370834583] [2020-10-28 12:27:31,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:31,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-28 12:27:31,077 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1848713314] [2020-10-28 12:27:31,078 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-28 12:27:31,079 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:31,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-28 12:27:31,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-28 12:27:31,080 INFO L87 Difference]: Start difference. First operand 22807 states and 28420 transitions. Second operand 6 states. [2020-10-28 12:27:52,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:27:52,473 INFO L93 Difference]: Finished difference Result 44846 states and 56079 transitions. [2020-10-28 12:27:52,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-28 12:27:52,476 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 323 [2020-10-28 12:27:52,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:27:52,540 INFO L225 Difference]: With dead ends: 44846 [2020-10-28 12:27:52,540 INFO L226 Difference]: Without dead ends: 22812 [2020-10-28 12:27:52,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-28 12:27:52,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22812 states. [2020-10-28 12:27:53,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22812 to 22796. [2020-10-28 12:27:53,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22796 states. [2020-10-28 12:27:53,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22796 states to 22796 states and 27286 transitions. [2020-10-28 12:27:53,133 INFO L78 Accepts]: Start accepts. Automaton has 22796 states and 27286 transitions. Word has length 323 [2020-10-28 12:27:53,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-28 12:27:53,134 INFO L481 AbstractCegarLoop]: Abstraction has 22796 states and 27286 transitions. [2020-10-28 12:27:53,135 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-28 12:27:53,135 INFO L276 IsEmpty]: Start isEmpty. Operand 22796 states and 27286 transitions. [2020-10-28 12:27:53,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 401 [2020-10-28 12:27:53,147 INFO L414 BasicCegarLoop]: Found error trace [2020-10-28 12:27:53,148 INFO L422 BasicCegarLoop]: trace histogram [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, 4, 4, 4, 4, 4, 3, 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] [2020-10-28 12:27:53,148 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-28 12:27:53,148 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-28 12:27:53,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-28 12:27:53,149 INFO L82 PathProgramCache]: Analyzing trace with hash 789815930, now seen corresponding path program 1 times [2020-10-28 12:27:53,150 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-28 12:27:53,150 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595143548] [2020-10-28 12:27:53,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-28 12:27:53,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:53,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:55,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:58,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:58,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 418 [2020-10-28 12:27:58,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-28 12:27:58,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-28 12:27:58,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:58,266 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:58,266 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 159 [2020-10-28 12:27:58,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-28 12:27:58,267 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:58,455 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-28 12:27:58,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-28 12:27:58,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:58,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:58,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:58,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-28 12:27:58,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:58,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-28 12:27:58,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:58,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:58,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:58,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:58,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-28 12:27:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:58,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:58,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:58,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 150 [2020-10-28 12:27:58,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:58,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-28 12:27:58,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:58,686 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-28 12:27:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-28 12:27:58,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 144 [2020-10-28 12:27:58,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:58,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2020-10-28 12:27:58,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:58,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:58,886 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:58,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-28 12:27:58,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:58,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 123 [2020-10-28 12:27:58,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:58,887 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-28 12:27:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-28 12:27:58,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-28 12:27:58,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:58,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 246 [2020-10-28 12:27:58,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:58,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:59,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:59,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-28 12:27:59,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:59,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-28 12:27:59,026 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:59,027 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 71 [2020-10-28 12:27:59,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:59,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:59,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 319 [2020-10-28 12:27:59,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-28 12:27:59,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-28 12:27:59,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-28 12:27:59,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-28 12:27:59,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-28 12:27:59,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-28 12:27:59,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-28 12:27:59,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.6 [2020-10-28 12:27:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-28 12:27:59,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-28 12:27:59,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-28 12:27:59,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-28 12:27:59,301 INFO L134 CoverageAnalysis]: Checked inductivity of 487 backedges. 130 proven. 141 refuted. 0 times theorem prover too weak. 216 trivial. 0 not checked. [2020-10-28 12:27:59,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595143548] [2020-10-28 12:27:59,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-28 12:27:59,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-28 12:27:59,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411390105] [2020-10-28 12:27:59,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-28 12:27:59,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-28 12:27:59,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-28 12:27:59,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-28 12:27:59,304 INFO L87 Difference]: Start difference. First operand 22796 states and 27286 transitions. Second operand 7 states. [2020-10-28 12:28:05,910 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-28 12:28:22,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-28 12:28:22,478 INFO L93 Difference]: Finished difference Result 60915 states and 74828 transitions. [2020-10-28 12:28:22,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-28 12:28:22,482 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 400 [2020-10-28 12:28:22,483 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-28 12:28:22,598 INFO L225 Difference]: With dead ends: 60915 [2020-10-28 12:28:22,598 INFO L226 Difference]: Without dead ends: 38892 [2020-10-28 12:28:22,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-28 12:28:22,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38892 states. [2020-10-28 12:28:23,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38892 to 36405. [2020-10-28 12:28:23,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36405 states.