/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/Problem04_label38.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:00:23,919 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:00:23,922 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:00:23,959 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:00:23,960 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:00:23,961 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:00:23,963 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:00:23,965 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:00:23,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:00:23,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:00:23,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:00:23,971 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:00:23,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:00:23,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:00:23,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:00:23,976 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:00:23,977 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:00:23,978 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:00:23,993 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:00:23,998 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:00:24,001 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:00:24,003 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:00:24,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:00:24,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:00:24,019 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:00:24,020 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:00:24,020 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:00:24,021 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:00:24,021 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:00:24,024 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:00:24,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:00:24,025 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:00:24,026 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:00:24,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:00:24,029 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:00:24,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:00:24,030 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:00:24,030 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:00:24,031 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:00:24,031 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:00:24,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:00:24,033 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 16:00:24,083 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:00:24,084 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:00:24,088 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:00:24,088 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:00:24,088 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:00:24,089 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:00:24,089 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:00:24,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:00:24,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:00:24,090 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:00:24,091 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:00:24,091 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:00:24,091 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:00:24,091 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:00:24,091 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:00:24,091 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:00:24,092 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:00:24,092 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:00:24,092 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:00:24,092 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:00:24,093 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:00:24,093 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:00:24,093 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:00:24,093 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:00:24,093 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:00:24,094 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:00:24,094 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:00:24,094 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:00:24,094 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:00:24,094 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:00:24,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:00:24,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:00:24,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:00:24,515 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:00:24,516 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:00:24,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem04_label38.c [2020-10-27 16:00:24,601 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39ccf7d6e/e058c6efcc45476dade0c3371dda5c30/FLAG7306718c0 [2020-10-27 16:00:25,661 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:00:25,662 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem04_label38.c [2020-10-27 16:00:25,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39ccf7d6e/e058c6efcc45476dade0c3371dda5c30/FLAG7306718c0 [2020-10-27 16:00:26,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/39ccf7d6e/e058c6efcc45476dade0c3371dda5c30 [2020-10-27 16:00:26,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:00:26,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:00:26,044 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:00:26,045 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:00:26,052 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:00:26,054 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:00:26" (1/1) ... [2020-10-27 16:00:26,060 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1713cc38 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:26, skipping insertion in model container [2020-10-27 16:00:26,060 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:00:26" (1/1) ... [2020-10-27 16:00:26,070 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:00:26,236 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:00:27,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:00:27,712 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:00:28,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:00:28,517 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:00:28,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28 WrapperNode [2020-10-27 16:00:28,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:00:28,519 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:00:28,520 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:00:28,520 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:00:28,533 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28" (1/1) ... [2020-10-27 16:00:28,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28" (1/1) ... [2020-10-27 16:00:28,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28" (1/1) ... [2020-10-27 16:00:28,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28" (1/1) ... [2020-10-27 16:00:28,736 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28" (1/1) ... [2020-10-27 16:00:28,773 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28" (1/1) ... [2020-10-27 16:00:28,808 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28" (1/1) ... [2020-10-27 16:00:28,950 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:00:28,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:00:28,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:00:28,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:00:28,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28" (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 16:00:29,035 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:00:29,036 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:00:29,036 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:00:29,036 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:00:29,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:00:29,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:00:29,037 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:00:29,037 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:00:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:00:29,037 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:00:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:00:29,038 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:00:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:00:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:00:29,039 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:00:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:00:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:00:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:00:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:00:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:00:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:00:29,040 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:00:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:00:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:00:29,041 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:00:33,914 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:00:33,915 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:00:33,918 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:00:33 BoogieIcfgContainer [2020-10-27 16:00:33,919 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:00:33,923 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:00:33,924 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:00:33,927 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:00:33,928 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:00:26" (1/3) ... [2020-10-27 16:00:33,928 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bc27f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:00:33, skipping insertion in model container [2020-10-27 16:00:33,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:00:28" (2/3) ... [2020-10-27 16:00:33,929 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68bc27f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:00:33, skipping insertion in model container [2020-10-27 16:00:33,929 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:00:33" (3/3) ... [2020-10-27 16:00:33,931 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem04_label38.c [2020-10-27 16:00:33,943 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:00:33,952 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:00:33,966 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:00:34,013 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:00:34,013 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:00:34,013 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:00:34,013 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:00:34,014 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:00:34,014 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:00:34,014 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:00:34,014 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:00:34,060 INFO L276 IsEmpty]: Start isEmpty. Operand 910 states. [2020-10-27 16:00:34,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 779 [2020-10-27 16:00:34,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:00:34,187 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:00:34,188 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:00:34,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:00:34,198 INFO L82 PathProgramCache]: Analyzing trace with hash -583285252, now seen corresponding path program 1 times [2020-10-27 16:00:34,208 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:00:34,208 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1241490278] [2020-10-27 16:00:34,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:00:34,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:38,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:39,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:39,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 794 [2020-10-27 16:00:39,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:00:39,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 16:00:39,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:00:39,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:00:39,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 785 [2020-10-27 16:00:39,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:00:40,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:00:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:40,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:40,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:00:40,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:00:40,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:00:40,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 16:00:40,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:00:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:00:40,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:00:40,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:00:40,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:00:41,541 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 16:00:41,541 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1241490278] [2020-10-27 16:00:41,543 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:00:41,544 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 16:00:41,544 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1705817199] [2020-10-27 16:00:41,551 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:00:41,552 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:00:41,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:00:41,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:00:41,568 INFO L87 Difference]: Start difference. First operand 910 states. Second operand 5 states. [2020-10-27 16:00:57,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:00:57,477 INFO L93 Difference]: Finished difference Result 3526 states and 6827 transitions. [2020-10-27 16:00:57,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:00:57,480 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 778 [2020-10-27 16:00:57,487 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:00:57,540 INFO L225 Difference]: With dead ends: 3526 [2020-10-27 16:00:57,540 INFO L226 Difference]: Without dead ends: 2548 [2020-10-27 16:00:57,555 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:00:57,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2020-10-27 16:00:57,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 2544. [2020-10-27 16:00:57,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2544 states. [2020-10-27 16:00:57,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2544 states to 2544 states and 4204 transitions. [2020-10-27 16:00:57,760 INFO L78 Accepts]: Start accepts. Automaton has 2544 states and 4204 transitions. Word has length 778 [2020-10-27 16:00:57,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:00:57,764 INFO L481 AbstractCegarLoop]: Abstraction has 2544 states and 4204 transitions. [2020-10-27 16:00:57,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:00:57,764 INFO L276 IsEmpty]: Start isEmpty. Operand 2544 states and 4204 transitions. [2020-10-27 16:00:57,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 790 [2020-10-27 16:00:57,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:00:57,798 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:00:57,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:00:57,799 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:00:57,800 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:00:57,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1993367811, now seen corresponding path program 1 times [2020-10-27 16:00:57,801 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:00:57,801 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2137203271] [2020-10-27 16:00:57,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:00:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:00:57,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:00:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:02,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:02,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 807 [2020-10-27 16:01:02,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:01:02,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-10-27 16:01:02,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:01:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-10-27 16:01:02,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 782 [2020-10-27 16:01:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:03,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:01:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:03,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:03,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:03,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:01:03,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:03,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 16:01:03,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:03,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:03,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:03,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:03,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-10-27 16:01:03,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:01:03,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:03,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:03,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:03,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-27 16:01:03,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:03,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 16:01:03,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:01:03,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:03,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 16:01:03,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:04,417 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:01:04,418 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2137203271] [2020-10-27 16:01:04,418 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:01:04,418 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:01:04,418 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [934439710] [2020-10-27 16:01:04,421 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:01:04,421 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:01:04,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:01:04,422 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:01:04,422 INFO L87 Difference]: Start difference. First operand 2544 states and 4204 transitions. Second operand 6 states. [2020-10-27 16:01:20,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:01:20,496 INFO L93 Difference]: Finished difference Result 10155 states and 17115 transitions. [2020-10-27 16:01:20,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:01:20,498 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 789 [2020-10-27 16:01:20,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:01:20,540 INFO L225 Difference]: With dead ends: 10155 [2020-10-27 16:01:20,541 INFO L226 Difference]: Without dead ends: 7617 [2020-10-27 16:01:20,549 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:01:20,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7617 states. [2020-10-27 16:01:20,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7617 to 7613. [2020-10-27 16:01:20,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7613 states. [2020-10-27 16:01:20,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7613 states to 7613 states and 11367 transitions. [2020-10-27 16:01:20,770 INFO L78 Accepts]: Start accepts. Automaton has 7613 states and 11367 transitions. Word has length 789 [2020-10-27 16:01:20,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:01:20,771 INFO L481 AbstractCegarLoop]: Abstraction has 7613 states and 11367 transitions. [2020-10-27 16:01:20,771 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:01:20,771 INFO L276 IsEmpty]: Start isEmpty. Operand 7613 states and 11367 transitions. [2020-10-27 16:01:20,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 841 [2020-10-27 16:01:20,797 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:01:20,798 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:01:20,798 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:01:20,798 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:01:20,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:01:20,799 INFO L82 PathProgramCache]: Analyzing trace with hash 1498894226, now seen corresponding path program 1 times [2020-10-27 16:01:20,800 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:01:20,800 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1843683952] [2020-10-27 16:01:20,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:01:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:20,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:25,940 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:25,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 858 [2020-10-27 16:01:25,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:01:25,941 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5059 [2020-10-27 16:01:25,941 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:01:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:01:25,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 16:01:25,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:26,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:01:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:26,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:26,185 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:26,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:01:26,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:26,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:01:26,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:01:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:26,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:01:26,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:26,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:01:26,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:26,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:26,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:26,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 16:01:26,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:26,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 16:01:26,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:26,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:01:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:01:26,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 16:01:26,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:26,865 INFO L134 CoverageAnalysis]: Checked inductivity of 59 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:01:26,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1843683952] [2020-10-27 16:01:26,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:01:26,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 16:01:26,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129697862] [2020-10-27 16:01:26,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:01:26,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:01:26,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:01:26,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:01:26,869 INFO L87 Difference]: Start difference. First operand 7613 states and 11367 transitions. Second operand 7 states. [2020-10-27 16:01:27,015 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:01:37,377 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:01:40,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:01:40,541 INFO L93 Difference]: Finished difference Result 22974 states and 35130 transitions. [2020-10-27 16:01:40,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 16:01:40,547 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 840 [2020-10-27 16:01:40,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:01:40,634 INFO L225 Difference]: With dead ends: 22974 [2020-10-27 16:01:40,634 INFO L226 Difference]: Without dead ends: 15367 [2020-10-27 16:01:40,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 16:01:40,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15367 states. [2020-10-27 16:01:41,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15367 to 15363. [2020-10-27 16:01:41,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15363 states. [2020-10-27 16:01:41,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15363 states to 15363 states and 22508 transitions. [2020-10-27 16:01:41,082 INFO L78 Accepts]: Start accepts. Automaton has 15363 states and 22508 transitions. Word has length 840 [2020-10-27 16:01:41,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:01:41,082 INFO L481 AbstractCegarLoop]: Abstraction has 15363 states and 22508 transitions. [2020-10-27 16:01:41,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:01:41,082 INFO L276 IsEmpty]: Start isEmpty. Operand 15363 states and 22508 transitions. [2020-10-27 16:01:41,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 867 [2020-10-27 16:01:41,148 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:01:41,149 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:01:41,150 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:01:41,150 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:01:41,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:01:41,151 INFO L82 PathProgramCache]: Analyzing trace with hash 544615216, now seen corresponding path program 1 times [2020-10-27 16:01:41,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:01:41,151 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1290920814] [2020-10-27 16:01:41,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:01:41,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:41,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:41,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:43,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:45,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:46,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:46,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 886 [2020-10-27 16:01:46,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:01:46,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5111 [2020-10-27 16:01:46,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:46,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:01:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 100 [2020-10-27 16:01:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 782 [2020-10-27 16:01:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:46,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:01:46,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:46,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:46,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:46,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:01:46,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:46,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:01:46,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:46,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:46,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:01:46,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:46,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:46,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 16:01:46,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:01:46,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:01:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:46,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:01:46,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:46,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-10-27 16:01:46,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:01:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:01:47,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:01:47,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-10-27 16:01:47,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:01:47,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 16:01:47,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:01:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:01:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:01:47,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 16:01:47,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:01:48,338 INFO L134 CoverageAnalysis]: Checked inductivity of 108 backedges. 83 proven. 2 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-10-27 16:01:48,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1290920814] [2020-10-27 16:01:48,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:01:48,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 16:01:48,339 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396799461] [2020-10-27 16:01:48,341 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 16:01:48,341 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:01:48,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 16:01:48,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 16:01:48,342 INFO L87 Difference]: Start difference. First operand 15363 states and 22508 transitions. Second operand 5 states. [2020-10-27 16:01:48,850 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 96 [2020-10-27 16:02:00,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:02:00,311 INFO L93 Difference]: Finished difference Result 45925 states and 69270 transitions. [2020-10-27 16:02:00,312 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 16:02:00,312 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 866 [2020-10-27 16:02:00,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:02:00,443 INFO L225 Difference]: With dead ends: 45925 [2020-10-27 16:02:00,443 INFO L226 Difference]: Without dead ends: 30568 [2020-10-27 16:02:00,489 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 5 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 16:02:00,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30568 states. [2020-10-27 16:02:01,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30568 to 30564. [2020-10-27 16:02:01,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30564 states. [2020-10-27 16:02:01,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30564 states to 30564 states and 43432 transitions. [2020-10-27 16:02:01,269 INFO L78 Accepts]: Start accepts. Automaton has 30564 states and 43432 transitions. Word has length 866 [2020-10-27 16:02:01,272 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:02:01,272 INFO L481 AbstractCegarLoop]: Abstraction has 30564 states and 43432 transitions. [2020-10-27 16:02:01,272 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 16:02:01,272 INFO L276 IsEmpty]: Start isEmpty. Operand 30564 states and 43432 transitions. [2020-10-27 16:02:01,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 991 [2020-10-27 16:02:01,379 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:02:01,380 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 16:02:01,381 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:02:01,381 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:02:01,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:02:01,384 INFO L82 PathProgramCache]: Analyzing trace with hash 430941720, now seen corresponding path program 1 times [2020-10-27 16:02:01,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:02:01,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [924886327] [2020-10-27 16:02:01,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:02:01,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:01,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:01,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:05,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:06,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:06,474 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1010 [2020-10-27 16:02:06,474 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:02:06,474 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 16:02:06,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 16:02:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 224 [2020-10-27 16:02:06,475 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 782 [2020-10-27 16:02:06,475 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:06,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:02:06,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:06,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:06,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:06,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:02:06,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:06,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:02:06,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:02:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:06,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:02:06,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:06,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:02:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:06,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:06,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:06,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:02:06,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:06,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:02:06,983 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:06,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:02:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:06,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:02:06,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:06,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 16:02:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:07,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:07,194 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:07,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 16:02:07,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:07,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-10-27 16:02:07,195 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:02:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:07,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 16:02:07,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:08,079 INFO L134 CoverageAnalysis]: Checked inductivity of 223 backedges. 207 proven. 2 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 16:02:08,080 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [924886327] [2020-10-27 16:02:08,080 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:02:08,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:02:08,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815179612] [2020-10-27 16:02:08,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:02:08,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:02:08,082 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:02:08,082 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:02:08,082 INFO L87 Difference]: Start difference. First operand 30564 states and 43432 transitions. Second operand 6 states. [2020-10-27 16:02:08,209 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:02:09,386 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:02:24,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:02:24,893 INFO L93 Difference]: Finished difference Result 110678 states and 161224 transitions. [2020-10-27 16:02:24,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:02:24,894 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 990 [2020-10-27 16:02:24,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:02:25,267 INFO L225 Difference]: With dead ends: 110678 [2020-10-27 16:02:25,267 INFO L226 Difference]: Without dead ends: 80120 [2020-10-27 16:02:25,359 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:02:25,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80120 states. [2020-10-27 16:02:27,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80120 to 80120. [2020-10-27 16:02:27,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80120 states. [2020-10-27 16:02:27,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80120 states to 80120 states and 107877 transitions. [2020-10-27 16:02:27,255 INFO L78 Accepts]: Start accepts. Automaton has 80120 states and 107877 transitions. Word has length 990 [2020-10-27 16:02:27,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:02:27,257 INFO L481 AbstractCegarLoop]: Abstraction has 80120 states and 107877 transitions. [2020-10-27 16:02:27,257 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:02:27,257 INFO L276 IsEmpty]: Start isEmpty. Operand 80120 states and 107877 transitions. [2020-10-27 16:02:28,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1166 [2020-10-27 16:02:28,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:02:28,077 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:02:28,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 16:02:28,077 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:02:28,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:02:28,078 INFO L82 PathProgramCache]: Analyzing trace with hash -2048170547, now seen corresponding path program 1 times [2020-10-27 16:02:28,078 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:02:28,079 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1123917717] [2020-10-27 16:02:28,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:02:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:28,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:28,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:28,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:29,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:33,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:33,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1189 [2020-10-27 16:02:33,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 16:02:33,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5015 [2020-10-27 16:02:33,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:02:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 102 [2020-10-27 16:02:33,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-27 16:02:33,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:33,615 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:02:33,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:02:33,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:33,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:33,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:33,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:02:33,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:33,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:02:33,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:02:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:33,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:02:33,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:33,647 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:02:33,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:33,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:33,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:33,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:02:33,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:33,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:02:33,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:02:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:33,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:02:33,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:33,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 16:02:33,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:33,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:33,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:33,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 16:02:33,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 16:02:33,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:02:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:02:33,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 16:02:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:33,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 16:02:33,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:33,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:34,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:34,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-27 16:02:34,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 519 [2020-10-27 16:02:34,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:02:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:02:34,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-27 16:02:34,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:34,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 16:02:34,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:34,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:34,747 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:02:34,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 16:02:34,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:02:34,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 16:02:34,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:02:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 16:02:34,748 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:02:34,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 16:02:34,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:02:35,973 INFO L134 CoverageAnalysis]: Checked inductivity of 482 backedges. 464 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 16:02:35,974 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1123917717] [2020-10-27 16:02:35,974 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:02:35,974 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:02:35,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470377609] [2020-10-27 16:02:35,976 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:02:35,976 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:02:35,976 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:02:35,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:02:35,977 INFO L87 Difference]: Start difference. First operand 80120 states and 107877 transitions. Second operand 8 states. [2020-10-27 16:02:36,104 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:02:36,807 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:02:46,660 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:02:54,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:02:54,540 INFO L93 Difference]: Finished difference Result 159662 states and 216562 transitions. [2020-10-27 16:02:54,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 16:02:54,541 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1165 [2020-10-27 16:02:54,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:02:54,831 INFO L225 Difference]: With dead ends: 159662 [2020-10-27 16:02:54,832 INFO L226 Difference]: Without dead ends: 80382 [2020-10-27 16:02:54,919 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-10-27 16:02:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80382 states. [2020-10-27 16:02:56,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80382 to 79475. [2020-10-27 16:02:56,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79475 states. [2020-10-27 16:02:56,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79475 states to 79475 states and 98843 transitions. [2020-10-27 16:02:56,731 INFO L78 Accepts]: Start accepts. Automaton has 79475 states and 98843 transitions. Word has length 1165 [2020-10-27 16:02:56,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:02:56,732 INFO L481 AbstractCegarLoop]: Abstraction has 79475 states and 98843 transitions. [2020-10-27 16:02:56,732 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 16:02:56,732 INFO L276 IsEmpty]: Start isEmpty. Operand 79475 states and 98843 transitions. [2020-10-27 16:02:56,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1201 [2020-10-27 16:02:56,909 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:02:56,910 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:02:56,910 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 16:02:56,910 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:02:56,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:02:56,911 INFO L82 PathProgramCache]: Analyzing trace with hash -1873582240, now seen corresponding path program 1 times [2020-10-27 16:02:56,911 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:02:56,911 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1947234245] [2020-10-27 16:02:56,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:02:57,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:02:57,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:57,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:02:58,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:02,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:02,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1222 [2020-10-27 16:03:02,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:03:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5092 [2020-10-27 16:03:02,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:03:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 16:03:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-27 16:03:02,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:02,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:03:02,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:02,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:02,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:02,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:03:02,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:02,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:03:02,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:02,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:02,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:03:02,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:02,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:02,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:02,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 16:03:02,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:02,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 16:03:02,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:03:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:02,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 120 [2020-10-27 16:03:02,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:02,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2020-10-27 16:03:02,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:02,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:03,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:03,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-27 16:03:03,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:03,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-10-27 16:03:03,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:03:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:03:03,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-27 16:03:03,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:03,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 16:03:03,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:03,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:03,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:03,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 16:03:03,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:03,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 16:03:03,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 16:03:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:03:03,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 16:03:03,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:04,503 INFO L134 CoverageAnalysis]: Checked inductivity of 538 backedges. 535 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:03:04,503 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1947234245] [2020-10-27 16:03:04,504 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:03:04,504 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:03:04,504 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54948302] [2020-10-27 16:03:04,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:03:04,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:03:04,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:03:04,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:03:04,507 INFO L87 Difference]: Start difference. First operand 79475 states and 98843 transitions. Second operand 8 states. [2020-10-27 16:03:04,648 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:03:17,182 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 93 [2020-10-27 16:03:18,294 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:03:18,294 INFO L93 Difference]: Finished difference Result 158579 states and 200661 transitions. [2020-10-27 16:03:18,295 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 16:03:18,295 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1200 [2020-10-27 16:03:18,295 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:03:18,545 INFO L225 Difference]: With dead ends: 158579 [2020-10-27 16:03:18,545 INFO L226 Difference]: Without dead ends: 79944 [2020-10-27 16:03:18,648 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-10-27 16:03:18,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79944 states. [2020-10-27 16:03:20,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79944 to 79658. [2020-10-27 16:03:20,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79658 states. [2020-10-27 16:03:20,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79658 states to 79658 states and 92883 transitions. [2020-10-27 16:03:20,677 INFO L78 Accepts]: Start accepts. Automaton has 79658 states and 92883 transitions. Word has length 1200 [2020-10-27 16:03:20,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:03:20,678 INFO L481 AbstractCegarLoop]: Abstraction has 79658 states and 92883 transitions. [2020-10-27 16:03:20,678 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 16:03:20,678 INFO L276 IsEmpty]: Start isEmpty. Operand 79658 states and 92883 transitions. [2020-10-27 16:03:21,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1242 [2020-10-27 16:03:21,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:03:21,164 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 16:03:21,164 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 16:03:21,165 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:03:21,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:03:21,165 INFO L82 PathProgramCache]: Analyzing trace with hash 390667129, now seen corresponding path program 1 times [2020-10-27 16:03:21,165 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:03:21,166 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [105930478] [2020-10-27 16:03:21,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:03:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:21,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:21,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:24,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:26,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:26,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1267 [2020-10-27 16:03:26,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 16:03:26,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5047 [2020-10-27 16:03:26,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:03:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 135 [2020-10-27 16:03:26,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 344 [2020-10-27 16:03:26,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:26,721 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:03:26,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:03:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:26,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:26,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:26,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:03:26,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:26,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 16:03:26,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:26,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:26,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:26,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:03:26,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:26,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:26,765 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:26,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:03:26,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:26,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:03:26,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:26,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:26,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:26,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 16:03:26,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:26,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:26,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:26,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 16:03:26,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:26,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 16:03:26,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:26,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:26,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:26,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 16:03:26,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:26,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:26,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:26,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 16:03:26,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:26,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 16:03:26,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:26,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:03:26,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:26,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 16:03:26,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:26,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 16:03:26,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:26,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:27,416 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:27,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 345 [2020-10-27 16:03:27,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:27,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-10-27 16:03:27,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:27,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:03:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:03:27,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 345 [2020-10-27 16:03:27,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:27,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 16:03:27,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:27,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:27,690 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-10-27 16:03:27,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:27,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 16:03:27,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:27,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 16:03:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:03:27,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 16:03:27,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:28,720 INFO L134 CoverageAnalysis]: Checked inductivity of 634 backedges. 570 proven. 2 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-10-27 16:03:28,721 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [105930478] [2020-10-27 16:03:28,721 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:03:28,721 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:03:28,722 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245670959] [2020-10-27 16:03:28,723 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:03:28,723 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:03:28,723 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:03:28,723 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:03:28,723 INFO L87 Difference]: Start difference. First operand 79658 states and 92883 transitions. Second operand 7 states. [2020-10-27 16:03:28,862 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:03:34,137 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification that was a NOOP. DAG size: 94 [2020-10-27 16:03:42,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:03:42,807 INFO L93 Difference]: Finished difference Result 158748 states and 186313 transitions. [2020-10-27 16:03:42,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 16:03:42,808 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1241 [2020-10-27 16:03:42,809 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:03:42,992 INFO L225 Difference]: With dead ends: 158748 [2020-10-27 16:03:42,992 INFO L226 Difference]: Without dead ends: 79930 [2020-10-27 16:03:43,096 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:03:43,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79930 states. [2020-10-27 16:03:44,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79930 to 64761. [2020-10-27 16:03:44,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64761 states. [2020-10-27 16:03:44,947 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64761 states to 64761 states and 72189 transitions. [2020-10-27 16:03:44,947 INFO L78 Accepts]: Start accepts. Automaton has 64761 states and 72189 transitions. Word has length 1241 [2020-10-27 16:03:44,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:03:44,948 INFO L481 AbstractCegarLoop]: Abstraction has 64761 states and 72189 transitions. [2020-10-27 16:03:44,948 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:03:44,948 INFO L276 IsEmpty]: Start isEmpty. Operand 64761 states and 72189 transitions. [2020-10-27 16:03:45,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1720 [2020-10-27 16:03:45,262 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:03:45,263 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:03:45,263 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 16:03:45,264 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:03:45,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:03:45,264 INFO L82 PathProgramCache]: Analyzing trace with hash 1946151563, now seen corresponding path program 1 times [2020-10-27 16:03:45,264 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:03:45,265 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1575530602] [2020-10-27 16:03:45,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:03:45,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:45,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:45,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:45,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:45,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:46,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:46,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:46,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:50,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:50,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1755 [2020-10-27 16:03:50,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 16:03:50,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5117 [2020-10-27 16:03:50,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:03:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 668 [2020-10-27 16:03:50,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 299 [2020-10-27 16:03:50,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,007 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 16:03:51,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:03:51,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:51,018 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:51,018 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:03:51,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:51,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 16:03:51,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:51,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:51,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:03:51,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:51,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:51,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:03:51,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:51,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:03:51,055 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:51,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:51,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-10-27 16:03:51,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:51,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:51,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 16:03:51,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:51,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 16:03:51,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:51,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:51,088 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,107 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2020-10-27 16:03:51,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:51,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:51,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 16:03:51,124 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:51,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 16:03:51,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:51,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:51,125 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2020-10-27 16:03:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:51,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:51,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 16:03:51,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:51,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 16:03:51,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:51,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:51,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:51,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 305 [2020-10-27 16:03:51,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:51,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:51,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 16:03:51,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 16:03:51,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:51,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:51,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:51,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:51,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 333 [2020-10-27 16:03:51,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:51,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:51,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 244 [2020-10-27 16:03:51,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:51,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 16:03:51,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:51,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:51,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 16:03:51,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:51,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:51,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:03:51,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:51,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 16:03:51,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:03:51,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:51,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:03:51,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-27 16:03:51,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:51,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:51,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-10-27 16:03:51,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:51,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 16:03:51,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:03:51,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:03:51,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 16:03:51,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:51,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 652 [2020-10-27 16:03:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:51,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:52,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:52,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 300 [2020-10-27 16:03:52,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:52,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-27 16:03:52,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 16:03:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:03:52,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 300 [2020-10-27 16:03:52,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:52,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2020-10-27 16:03:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:03:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:03:52,356 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:03:52,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 16:03:52,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:03:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-27 16:03:52,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:03:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 16:03:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:03:52,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 16:03:52,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:03:54,025 INFO L134 CoverageAnalysis]: Checked inductivity of 2472 backedges. 1563 proven. 2 refuted. 0 times theorem prover too weak. 907 trivial. 0 not checked. [2020-10-27 16:03:54,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1575530602] [2020-10-27 16:03:54,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:03:54,026 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:03:54,026 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [354483634] [2020-10-27 16:03:54,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:03:54,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:03:54,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:03:54,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:03:54,028 INFO L87 Difference]: Start difference. First operand 64761 states and 72189 transitions. Second operand 8 states. [2020-10-27 16:03:54,392 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification that was a NOOP. DAG size: 96