/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=DEEPEST --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_label49.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:49:58,852 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:49:58,855 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:49:58,892 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:49:58,892 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:49:58,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:49:58,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:49:58,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:49:58,901 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:49:58,902 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:49:58,903 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:49:58,905 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:49:58,906 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:49:58,907 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:49:58,909 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:49:58,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:49:58,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:49:58,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:49:58,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:49:58,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:49:58,920 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:49:58,922 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:49:58,924 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:49:58,925 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:49:58,928 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:49:58,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:49:58,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:49:58,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:49:58,931 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:49:58,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:49:58,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:49:58,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:49:58,935 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:49:58,936 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:49:58,937 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:49:58,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:49:58,939 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:49:58,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:49:58,940 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:49:58,941 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:49:58,942 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:49:58,943 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 [2020-10-27 17:49:59,012 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:49:59,012 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:49:59,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:49:59,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:49:59,017 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:49:59,018 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:49:59,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:49:59,019 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:49:59,019 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:49:59,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:49:59,019 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:49:59,019 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:49:59,020 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:49:59,020 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:49:59,020 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:49:59,020 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:49:59,020 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:49:59,021 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:49:59,021 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:49:59,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:49:59,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:49:59,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:49:59,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:49:59,023 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:49:59,023 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:49:59,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:49:59,024 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:49:59,024 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:49:59,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:49:59,025 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:49:59,471 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:49:59,513 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:49:59,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:49:59,518 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:49:59,519 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:49:59,520 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2020-10-27 17:49:59,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db9a2025d/21e903982725459f8b5879a9ccc37fb1/FLAG5b7fc330a [2020-10-27 17:50:00,621 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:50:00,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label49.c [2020-10-27 17:50:00,670 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db9a2025d/21e903982725459f8b5879a9ccc37fb1/FLAG5b7fc330a [2020-10-27 17:50:01,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/db9a2025d/21e903982725459f8b5879a9ccc37fb1 [2020-10-27 17:50:01,057 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:50:01,067 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:50:01,074 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:50:01,074 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:50:01,079 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:50:01,080 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:50:01" (1/1) ... [2020-10-27 17:50:01,086 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1298a76a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:01, skipping insertion in model container [2020-10-27 17:50:01,087 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:50:01" (1/1) ... [2020-10-27 17:50:01,098 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:50:01,269 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:50:02,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:50:02,707 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:50:03,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:50:03,488 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:50:03,489 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03 WrapperNode [2020-10-27 17:50:03,489 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:50:03,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:50:03,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:50:03,491 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:50:03,505 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03" (1/1) ... [2020-10-27 17:50:03,507 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03" (1/1) ... [2020-10-27 17:50:03,594 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03" (1/1) ... [2020-10-27 17:50:03,596 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03" (1/1) ... [2020-10-27 17:50:03,722 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03" (1/1) ... [2020-10-27 17:50:03,751 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03" (1/1) ... [2020-10-27 17:50:03,797 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03" (1/1) ... [2020-10-27 17:50:03,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:50:03,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:50:03,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:50:03,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:50:03,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03" (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 [2020-10-27 17:50:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:50:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:50:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:50:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:50:03,937 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:50:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:50:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:50:03,938 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:50:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:50:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:50:03,938 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:50:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:50:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:50:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:50:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:50:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:50:03,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:50:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:50:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:50:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:50:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:50:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:50:03,940 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:50:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:50:03,941 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:50:10,040 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:50:10,043 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:50:10,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:50:10 BoogieIcfgContainer [2020-10-27 17:50:10,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:50:10,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:50:10,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:50:10,053 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:50:10,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:50:01" (1/3) ... [2020-10-27 17:50:10,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdbd0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:50:10, skipping insertion in model container [2020-10-27 17:50:10,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:50:03" (2/3) ... [2020-10-27 17:50:10,055 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cdbd0e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:50:10, skipping insertion in model container [2020-10-27 17:50:10,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:50:10" (3/3) ... [2020-10-27 17:50:10,057 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label49.c [2020-10-27 17:50:10,070 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:50:10,076 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:50:10,089 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:50:10,123 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:50:10,123 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:50:10,123 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:50:10,124 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:50:10,124 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:50:10,124 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:50:10,124 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:50:10,124 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:50:10,160 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:50:10,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 17:50:10,169 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:10,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:50:10,171 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:10,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:10,178 INFO L82 PathProgramCache]: Analyzing trace with hash 1708925108, now seen corresponding path program 1 times [2020-10-27 17:50:10,187 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:10,188 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676834476] [2020-10-27 17:50:10,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:10,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:10,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:10,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:10,980 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 17:50:10,980 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:10,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 607 [2020-10-27 17:50:10,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:50:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:50:10,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 17:50:10,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:50:11,263 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-27 17:50:11,264 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:11,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:11,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:11,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:11,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:11,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 17:50:11,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:11,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:50:11,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:50:11,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:50:11,335 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676834476] [2020-10-27 17:50:11,338 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:50:11,338 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 17:50:11,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121079186] [2020-10-27 17:50:11,344 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:50:11,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:11,360 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:50:11,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:50:11,363 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 5 states. [2020-10-27 17:50:11,556 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-27 17:50:28,769 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:50:28,769 INFO L93 Difference]: Finished difference Result 3258 states and 6299 transitions. [2020-10-27 17:50:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:50:28,773 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 49 [2020-10-27 17:50:28,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:50:28,831 INFO L225 Difference]: With dead ends: 3258 [2020-10-27 17:50:28,831 INFO L226 Difference]: Without dead ends: 2347 [2020-10-27 17:50:28,848 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:50:28,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2347 states. [2020-10-27 17:50:29,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2347 to 2332. [2020-10-27 17:50:29,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2332 states. [2020-10-27 17:50:29,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2332 states to 2332 states and 3835 transitions. [2020-10-27 17:50:29,085 INFO L78 Accepts]: Start accepts. Automaton has 2332 states and 3835 transitions. Word has length 49 [2020-10-27 17:50:29,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:50:29,088 INFO L481 AbstractCegarLoop]: Abstraction has 2332 states and 3835 transitions. [2020-10-27 17:50:29,089 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:50:29,089 INFO L276 IsEmpty]: Start isEmpty. Operand 2332 states and 3835 transitions. [2020-10-27 17:50:29,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2020-10-27 17:50:29,106 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:29,109 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:50:29,110 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:50:29,111 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:29,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:29,113 INFO L82 PathProgramCache]: Analyzing trace with hash 1585875121, now seen corresponding path program 1 times [2020-10-27 17:50:29,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:29,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1751456823] [2020-10-27 17:50:29,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:29,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:29,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:29,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:30,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:30,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 17:50:30,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:50:30,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1533 [2020-10-27 17:50:30,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:50:30,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 88 [2020-10-27 17:50:30,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 17:50:30,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:50:30,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:30,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:30,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:30,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:30,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:30,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:50:30,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:30,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:30,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:30,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:50:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:30,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:31,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:31,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 17:50:31,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 17:50:31,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:31,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 17:50:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:31,068 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:50:31,069 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1751456823] [2020-10-27 17:50:31,069 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:50:31,069 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:50:31,070 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1150095723] [2020-10-27 17:50:31,071 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:50:31,072 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:31,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:50:31,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:50:31,073 INFO L87 Difference]: Start difference. First operand 2332 states and 3835 transitions. Second operand 5 states. [2020-10-27 17:50:44,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:50:44,092 INFO L93 Difference]: Finished difference Result 7004 states and 11632 transitions. [2020-10-27 17:50:44,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:50:44,093 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 127 [2020-10-27 17:50:44,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:50:44,121 INFO L225 Difference]: With dead ends: 7004 [2020-10-27 17:50:44,122 INFO L226 Difference]: Without dead ends: 4678 [2020-10-27 17:50:44,129 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:50:44,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4678 states. [2020-10-27 17:50:44,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4678 to 4674. [2020-10-27 17:50:44,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4674 states. [2020-10-27 17:50:44,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4674 states to 4674 states and 6759 transitions. [2020-10-27 17:50:44,280 INFO L78 Accepts]: Start accepts. Automaton has 4674 states and 6759 transitions. Word has length 127 [2020-10-27 17:50:44,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:50:44,281 INFO L481 AbstractCegarLoop]: Abstraction has 4674 states and 6759 transitions. [2020-10-27 17:50:44,281 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:50:44,282 INFO L276 IsEmpty]: Start isEmpty. Operand 4674 states and 6759 transitions. [2020-10-27 17:50:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-10-27 17:50:44,285 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:50:44,286 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:50:44,286 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:50:44,286 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:50:44,287 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:50:44,287 INFO L82 PathProgramCache]: Analyzing trace with hash 1483035629, now seen corresponding path program 1 times [2020-10-27 17:50:44,287 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:50:44,288 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1870824357] [2020-10-27 17:50:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:50:44,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:44,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:44,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:45,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:45,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 17:50:45,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:50:45,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1065 [2020-10-27 17:50:45,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:45,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:50:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 17:50:45,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 17:50:45,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:45,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:50:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:45,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:45,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:45,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:50:45,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:45,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 17:50:45,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:45,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:50:45,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:45,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:50:45,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:45,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:50:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:50:45,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:50:45,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:50:45,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-10-27 17:50:45,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:50:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 17:50:45,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:50:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:50:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:50:45,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 17:50:45,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:50:45,858 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:50:45,860 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1870824357] [2020-10-27 17:50:45,860 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:50:45,860 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:50:45,861 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881440882] [2020-10-27 17:50:45,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:50:45,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:50:45,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:50:45,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:50:45,865 INFO L87 Difference]: Start difference. First operand 4674 states and 6759 transitions. Second operand 5 states. [2020-10-27 17:51:00,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:00,697 INFO L93 Difference]: Finished difference Result 14006 states and 20652 transitions. [2020-10-27 17:51:00,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:51:00,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-10-27 17:51:00,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:00,751 INFO L225 Difference]: With dead ends: 14006 [2020-10-27 17:51:00,752 INFO L226 Difference]: Without dead ends: 9338 [2020-10-27 17:51:00,765 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:51:00,776 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9338 states. [2020-10-27 17:51:01,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9338 to 9330. [2020-10-27 17:51:01,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9330 states. [2020-10-27 17:51:01,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9330 states to 9330 states and 13047 transitions. [2020-10-27 17:51:01,054 INFO L78 Accepts]: Start accepts. Automaton has 9330 states and 13047 transitions. Word has length 152 [2020-10-27 17:51:01,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:01,057 INFO L481 AbstractCegarLoop]: Abstraction has 9330 states and 13047 transitions. [2020-10-27 17:51:01,057 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:51:01,057 INFO L276 IsEmpty]: Start isEmpty. Operand 9330 states and 13047 transitions. [2020-10-27 17:51:01,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2020-10-27 17:51:01,064 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:01,065 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:01,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:51:01,069 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:01,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:01,070 INFO L82 PathProgramCache]: Analyzing trace with hash -1252082943, now seen corresponding path program 1 times [2020-10-27 17:51:01,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:01,071 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [41730841] [2020-10-27 17:51:01,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:01,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:01,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:02,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:02,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 179 [2020-10-27 17:51:02,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:51:02,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-10-27 17:51:02,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-27 17:51:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 17:51:02,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:02,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:02,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:02,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:02,331 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:02,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:02,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:51:02,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:02,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:02,332 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:02,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:02,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:02,485 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:02,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 17:51:02,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:02,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 17:51:02,486 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:02,486 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 17:51:02,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:02,560 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:51:02,561 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [41730841] [2020-10-27 17:51:02,561 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:02,561 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:02,561 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802092118] [2020-10-27 17:51:02,562 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:02,563 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:02,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:02,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:02,574 INFO L87 Difference]: Start difference. First operand 9330 states and 13047 transitions. Second operand 5 states. [2020-10-27 17:51:19,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:19,018 INFO L93 Difference]: Finished difference Result 27957 states and 40032 transitions. [2020-10-27 17:51:19,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:51:19,023 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 167 [2020-10-27 17:51:19,023 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:19,115 INFO L225 Difference]: With dead ends: 27957 [2020-10-27 17:51:19,115 INFO L226 Difference]: Without dead ends: 18633 [2020-10-27 17:51:19,143 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:51:19,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18633 states. [2020-10-27 17:51:19,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18633 to 18621. [2020-10-27 17:51:19,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18621 states. [2020-10-27 17:51:19,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18621 states to 18621 states and 24431 transitions. [2020-10-27 17:51:19,734 INFO L78 Accepts]: Start accepts. Automaton has 18621 states and 24431 transitions. Word has length 167 [2020-10-27 17:51:19,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:19,734 INFO L481 AbstractCegarLoop]: Abstraction has 18621 states and 24431 transitions. [2020-10-27 17:51:19,734 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:51:19,734 INFO L276 IsEmpty]: Start isEmpty. Operand 18621 states and 24431 transitions. [2020-10-27 17:51:19,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-10-27 17:51:19,744 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:19,745 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:19,745 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:51:19,745 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:19,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:19,746 INFO L82 PathProgramCache]: Analyzing trace with hash -410005902, now seen corresponding path program 1 times [2020-10-27 17:51:19,746 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:19,746 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [225927743] [2020-10-27 17:51:19,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:19,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:19,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:19,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:20,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:20,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:24,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:24,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:24,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 253 [2020-10-27 17:51:24,816 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:51:24,816 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-10-27 17:51:24,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 202 [2020-10-27 17:51:24,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 17:51:24,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:25,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:25,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:25,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:25,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:25,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:25,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:25,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:51:25,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:25,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:25,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:25,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:25,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:25,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:25,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:25,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 17:51:25,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:25,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 17:51:25,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:25,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:25,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:25,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 17:51:25,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:25,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:25,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:25,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:51:25,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:25,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 17:51:25,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:25,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:51:25,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 17:51:25,348 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 17:51:25,349 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [225927743] [2020-10-27 17:51:25,349 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:25,349 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:51:25,350 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704954845] [2020-10-27 17:51:25,350 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:51:25,350 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:25,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:51:25,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:51:25,353 INFO L87 Difference]: Start difference. First operand 18621 states and 24431 transitions. Second operand 6 states. [2020-10-27 17:51:45,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:51:45,092 INFO L93 Difference]: Finished difference Result 51979 states and 71550 transitions. [2020-10-27 17:51:45,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:51:45,094 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 239 [2020-10-27 17:51:45,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:51:45,317 INFO L225 Difference]: With dead ends: 51979 [2020-10-27 17:51:45,317 INFO L226 Difference]: Without dead ends: 33364 [2020-10-27 17:51:45,362 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:51:45,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33364 states. [2020-10-27 17:51:46,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33364 to 32585. [2020-10-27 17:51:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32585 states. [2020-10-27 17:51:46,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32585 states to 32585 states and 44892 transitions. [2020-10-27 17:51:46,217 INFO L78 Accepts]: Start accepts. Automaton has 32585 states and 44892 transitions. Word has length 239 [2020-10-27 17:51:46,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:51:46,218 INFO L481 AbstractCegarLoop]: Abstraction has 32585 states and 44892 transitions. [2020-10-27 17:51:46,218 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:51:46,218 INFO L276 IsEmpty]: Start isEmpty. Operand 32585 states and 44892 transitions. [2020-10-27 17:51:46,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 265 [2020-10-27 17:51:46,234 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:51:46,234 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:51:46,235 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:51:46,235 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:51:46,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:51:46,236 INFO L82 PathProgramCache]: Analyzing trace with hash 741758157, now seen corresponding path program 1 times [2020-10-27 17:51:46,236 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:51:46,236 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464974099] [2020-10-27 17:51:46,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:51:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:46,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:46,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:48,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:49,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:49,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 276 [2020-10-27 17:51:49,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:51:49,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2702 [2020-10-27 17:51:49,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:51:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 225 [2020-10-27 17:51:49,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 17:51:49,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:51:49,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:49,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:49,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:49,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:51:49,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:49,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:51:49,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:51:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:49,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:51:49,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:49,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:51:49,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:51:49,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:51:49,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:51:49,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-10-27 17:51:49,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:51:49,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-27 17:51:49,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:51:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:51:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:51:49,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 210 [2020-10-27 17:51:49,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:51:49,625 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 40 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:51:49,626 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464974099] [2020-10-27 17:51:49,627 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:51:49,627 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:51:49,627 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2103232271] [2020-10-27 17:51:49,628 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:51:49,628 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:51:49,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:51:49,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:51:49,629 INFO L87 Difference]: Start difference. First operand 32585 states and 44892 transitions. Second operand 5 states. [2020-10-27 17:52:05,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:05,219 INFO L93 Difference]: Finished difference Result 79117 states and 112030 transitions. [2020-10-27 17:52:05,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:05,221 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 264 [2020-10-27 17:52:05,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:05,423 INFO L225 Difference]: With dead ends: 79117 [2020-10-27 17:52:05,423 INFO L226 Difference]: Without dead ends: 46538 [2020-10-27 17:52:05,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:05,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46538 states. [2020-10-27 17:52:06,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46538 to 38085. [2020-10-27 17:52:06,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38085 states. [2020-10-27 17:52:06,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38085 states to 38085 states and 51220 transitions. [2020-10-27 17:52:06,476 INFO L78 Accepts]: Start accepts. Automaton has 38085 states and 51220 transitions. Word has length 264 [2020-10-27 17:52:06,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:06,477 INFO L481 AbstractCegarLoop]: Abstraction has 38085 states and 51220 transitions. [2020-10-27 17:52:06,477 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:06,477 INFO L276 IsEmpty]: Start isEmpty. Operand 38085 states and 51220 transitions. [2020-10-27 17:52:06,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 767 [2020-10-27 17:52:06,594 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:06,595 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:52:06,595 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:52:06,596 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:06,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:06,598 INFO L82 PathProgramCache]: Analyzing trace with hash 1467071408, now seen corresponding path program 1 times [2020-10-27 17:52:06,598 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:06,599 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123281517] [2020-10-27 17:52:06,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:07,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:08,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:09,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:10,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:12,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:12,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 784 [2020-10-27 17:52:12,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:52:12,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-27 17:52:12,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:52:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 727 [2020-10-27 17:52:12,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 17:52:12,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:52:12,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:12,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:12,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:12,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:12,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:12,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:12,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:52:12,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:12,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:12,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:12,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:12,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:12,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:12,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 17:52:12,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:12,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 17:52:12,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:12,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:12,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:12,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 17:52:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:12,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:13,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:13,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 604 [2020-10-27 17:52:13,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:13,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 714 [2020-10-27 17:52:13,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:13,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:13,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 592 [2020-10-27 17:52:13,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:13,822 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:52:13,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:13,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:14,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:14,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 316 [2020-10-27 17:52:14,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:14,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-27 17:52:14,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:14,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 307 [2020-10-27 17:52:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:14,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:52:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:14,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:14,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:14,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 17:52:14,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 17:52:14,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-10-27 17:52:14,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:15,922 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-10-27 17:52:15,922 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123281517] [2020-10-27 17:52:15,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:15,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:52:15,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233206823] [2020-10-27 17:52:15,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:52:15,924 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:15,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:52:15,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:52:15,925 INFO L87 Difference]: Start difference. First operand 38085 states and 51220 transitions. Second operand 5 states. [2020-10-27 17:52:25,603 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2020-10-27 17:52:26,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:52:26,819 INFO L93 Difference]: Finished difference Result 76196 states and 102695 transitions. [2020-10-27 17:52:26,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:52:26,820 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 766 [2020-10-27 17:52:26,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:52:26,955 INFO L225 Difference]: With dead ends: 76196 [2020-10-27 17:52:26,955 INFO L226 Difference]: Without dead ends: 38101 [2020-10-27 17:52:27,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:52:27,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38101 states. [2020-10-27 17:52:27,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38101 to 38085. [2020-10-27 17:52:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38085 states. [2020-10-27 17:52:27,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38085 states to 38085 states and 51194 transitions. [2020-10-27 17:52:27,821 INFO L78 Accepts]: Start accepts. Automaton has 38085 states and 51194 transitions. Word has length 766 [2020-10-27 17:52:27,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:52:27,823 INFO L481 AbstractCegarLoop]: Abstraction has 38085 states and 51194 transitions. [2020-10-27 17:52:27,823 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:52:27,823 INFO L276 IsEmpty]: Start isEmpty. Operand 38085 states and 51194 transitions. [2020-10-27 17:52:27,918 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 862 [2020-10-27 17:52:27,918 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:52:27,919 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:52:27,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:52:27,919 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:52:27,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:52:27,920 INFO L82 PathProgramCache]: Analyzing trace with hash 1259548223, now seen corresponding path program 1 times [2020-10-27 17:52:27,920 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:52:27,921 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051280430] [2020-10-27 17:52:27,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:52:28,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:28,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:28,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:33,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:33,128 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 879 [2020-10-27 17:52:33,128 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:52:33,128 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 17:52:33,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 17:52:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 128 [2020-10-27 17:52:33,129 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 664 [2020-10-27 17:52:33,129 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:33,559 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 36 [2020-10-27 17:52:33,653 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:52:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:33,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:33,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:33,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:52:33,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:33,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:52:33,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:33,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:52:33,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:33,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:52:33,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:33,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:52:33,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:33,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:33,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:33,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-10-27 17:52:33,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:33,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 17:52:33,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:33,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:52:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:52:33,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-10-27 17:52:33,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:33,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2020-10-27 17:52:34,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:34,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:35,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:39,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:39,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 699 [2020-10-27 17:52:39,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:52:39,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 17:52:39,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:52:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:52:39,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 699 [2020-10-27 17:52:39,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:52:39,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:52:39,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:39,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:40,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:40,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-27 17:52:40,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 738 [2020-10-27 17:52:40,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:52:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:52:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 411 [2020-10-27 17:52:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:40,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:52:40,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:52:40,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:52:40,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:52:40,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 17:52:40,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:52:40,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 306 [2020-10-27 17:52:40,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:52:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:52:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:52:40,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-27 17:52:40,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:52:42,214 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:52:42,215 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051280430] [2020-10-27 17:52:42,215 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:52:42,215 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 17:52:42,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988669478] [2020-10-27 17:52:42,216 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 17:52:42,217 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:52:42,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 17:52:42,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 17:52:42,218 INFO L87 Difference]: Start difference. First operand 38085 states and 51194 transitions. Second operand 9 states. [2020-10-27 17:52:43,743 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 77 [2020-10-27 17:53:09,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:53:09,194 INFO L93 Difference]: Finished difference Result 84446 states and 117459 transitions. [2020-10-27 17:53:09,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 17:53:09,197 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 861 [2020-10-27 17:53:09,199 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:53:09,414 INFO L225 Difference]: With dead ends: 84446 [2020-10-27 17:53:09,415 INFO L226 Difference]: Without dead ends: 46367 [2020-10-27 17:53:09,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-10-27 17:53:09,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46367 states. [2020-10-27 17:53:10,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46367 to 44723. [2020-10-27 17:53:10,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44723 states. [2020-10-27 17:53:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44723 states to 44723 states and 62584 transitions. [2020-10-27 17:53:10,641 INFO L78 Accepts]: Start accepts. Automaton has 44723 states and 62584 transitions. Word has length 861 [2020-10-27 17:53:10,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:53:10,642 INFO L481 AbstractCegarLoop]: Abstraction has 44723 states and 62584 transitions. [2020-10-27 17:53:10,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 17:53:10,643 INFO L276 IsEmpty]: Start isEmpty. Operand 44723 states and 62584 transitions. [2020-10-27 17:53:10,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 870 [2020-10-27 17:53:10,766 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:53:10,767 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:53:10,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:53:10,767 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:53:10,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:53:10,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1933505457, now seen corresponding path program 1 times [2020-10-27 17:53:10,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:53:10,769 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1786707010] [2020-10-27 17:53:10,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:53:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:11,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:11,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:16,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:16,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 887 [2020-10-27 17:53:16,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:53:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-27 17:53:16,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 17:53:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 17:53:16,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 594 [2020-10-27 17:53:16,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:16,868 WARN L193 SmtUtils]: Spent 218.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 39 [2020-10-27 17:53:16,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:53:16,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:16,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:16,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:16,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:53:16,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:53:16,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:53:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:16,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:53:16,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:17,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:53:17,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:17,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:17,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:17,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-10-27 17:53:17,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:17,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 17:53:17,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:53:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:53:17,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-10-27 17:53:17,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:17,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2020-10-27 17:53:17,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:17,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:22,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:22,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:22,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 699 [2020-10-27 17:53:22,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:53:22,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5212 [2020-10-27 17:53:22,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 17:53:22,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:53:22,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 699 [2020-10-27 17:53:22,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:22,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:53:22,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:23,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:23,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:23,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 411 [2020-10-27 17:53:23,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 781 [2020-10-27 17:53:23,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:53:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:53:23,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 411 [2020-10-27 17:53:23,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:23,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 17:53:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:53:23,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:53:24,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:53:24,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 184 [2020-10-27 17:53:24,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:53:24,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-27 17:53:24,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:53:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:53:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:53:24,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-10-27 17:53:24,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:53:26,066 INFO L134 CoverageAnalysis]: Checked inductivity of 208 backedges. 205 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:53:26,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1786707010] [2020-10-27 17:53:26,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:53:26,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 17:53:26,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638016833] [2020-10-27 17:53:26,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 17:53:26,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:53:26,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 17:53:26,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 17:53:26,070 INFO L87 Difference]: Start difference. First operand 44723 states and 62584 transitions. Second operand 10 states. [2020-10-27 17:53:27,972 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 83