/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/Problem06_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 16:35:10,902 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 16:35:10,906 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 16:35:10,966 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 16:35:10,966 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 16:35:10,973 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 16:35:10,975 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 16:35:10,980 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 16:35:10,983 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 16:35:10,989 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 16:35:10,990 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 16:35:10,992 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 16:35:10,992 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 16:35:10,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 16:35:10,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 16:35:11,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 16:35:11,001 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 16:35:11,016 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 16:35:11,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 16:35:11,024 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 16:35:11,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 16:35:11,032 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 16:35:11,033 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 16:35:11,034 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 16:35:11,037 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 16:35:11,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 16:35:11,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 16:35:11,038 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 16:35:11,039 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 16:35:11,040 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 16:35:11,040 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 16:35:11,041 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 16:35:11,042 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 16:35:11,043 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 16:35:11,044 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 16:35:11,044 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 16:35:11,045 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 16:35:11,045 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 16:35:11,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 16:35:11,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 16:35:11,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 16:35:11,052 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 16:35:11,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 16:35:11,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 16:35:11,080 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 16:35:11,080 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 16:35:11,081 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 16:35:11,081 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 16:35:11,081 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 16:35:11,081 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 16:35:11,081 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 16:35:11,082 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 16:35:11,082 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 16:35:11,082 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 16:35:11,082 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 16:35:11,082 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 16:35:11,083 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 16:35:11,083 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 16:35:11,083 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 16:35:11,083 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 16:35:11,083 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 16:35:11,084 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 16:35:11,084 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 16:35:11,084 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 16:35:11,084 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 16:35:11,084 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 16:35:11,085 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 16:35:11,085 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 16:35:11,085 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 16:35:11,085 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 16:35:11,085 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 16:35:11,086 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 16:35:11,493 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 16:35:11,517 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 16:35:11,520 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 16:35:11,522 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 16:35:11,522 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 16:35:11,523 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem06_label46.c [2020-10-27 16:35:11,603 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/630b83af1/ba2608959c344e5b924eb988f63f7538/FLAG2e64ce810 [2020-10-27 16:35:12,881 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 16:35:12,881 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem06_label46.c [2020-10-27 16:35:12,988 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/630b83af1/ba2608959c344e5b924eb988f63f7538/FLAG2e64ce810 [2020-10-27 16:35:13,059 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/630b83af1/ba2608959c344e5b924eb988f63f7538 [2020-10-27 16:35:13,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 16:35:13,073 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 16:35:13,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 16:35:13,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 16:35:13,084 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 16:35:13,085 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:35:13" (1/1) ... [2020-10-27 16:35:13,096 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@30d2feda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:13, skipping insertion in model container [2020-10-27 16:35:13,096 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:35:13" (1/1) ... [2020-10-27 16:35:13,107 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 16:35:13,353 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 16:35:15,695 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:35:15,713 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 16:35:16,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 16:35:16,910 INFO L208 MainTranslator]: Completed translation [2020-10-27 16:35:16,911 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16 WrapperNode [2020-10-27 16:35:16,911 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 16:35:16,912 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 16:35:16,913 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 16:35:16,913 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 16:35:16,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16" (1/1) ... [2020-10-27 16:35:16,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16" (1/1) ... [2020-10-27 16:35:17,029 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16" (1/1) ... [2020-10-27 16:35:17,030 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16" (1/1) ... [2020-10-27 16:35:17,270 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16" (1/1) ... [2020-10-27 16:35:17,314 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16" (1/1) ... [2020-10-27 16:35:17,359 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16" (1/1) ... [2020-10-27 16:35:17,412 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 16:35:17,414 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 16:35:17,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 16:35:17,415 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 16:35:17,416 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16" (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 16:35:17,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 16:35:17,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 16:35:17,560 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 16:35:17,560 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 16:35:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 16:35:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 16:35:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 16:35:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-27 16:35:17,561 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 16:35:17,561 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 16:35:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 16:35:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 16:35:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 16:35:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-27 16:35:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 16:35:17,562 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 16:35:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 16:35:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 16:35:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 16:35:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 16:35:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 16:35:17,563 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 16:35:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 16:35:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 16:35:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 16:35:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 16:35:17,564 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 16:35:24,597 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 16:35:24,598 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 16:35:24,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:35:24 BoogieIcfgContainer [2020-10-27 16:35:24,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 16:35:24,607 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 16:35:24,607 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 16:35:24,611 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 16:35:24,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:35:13" (1/3) ... [2020-10-27 16:35:24,612 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a4f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:35:24, skipping insertion in model container [2020-10-27 16:35:24,612 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:35:16" (2/3) ... [2020-10-27 16:35:24,613 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c1a4f7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:35:24, skipping insertion in model container [2020-10-27 16:35:24,613 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:35:24" (3/3) ... [2020-10-27 16:35:24,614 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem06_label46.c [2020-10-27 16:35:24,627 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 16:35:24,638 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 16:35:24,652 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 16:35:24,702 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 16:35:24,702 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 16:35:24,703 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 16:35:24,703 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 16:35:24,703 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 16:35:24,703 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 16:35:24,703 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 16:35:24,703 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 16:35:24,758 INFO L276 IsEmpty]: Start isEmpty. Operand 1319 states. [2020-10-27 16:35:24,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 998 [2020-10-27 16:35:24,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:35:24,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:35:24,836 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:35:24,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:35:24,846 INFO L82 PathProgramCache]: Analyzing trace with hash -467156484, now seen corresponding path program 1 times [2020-10-27 16:35:24,857 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:35:24,858 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [640394592] [2020-10-27 16:35:24,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:35:25,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:26,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:29,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:30,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:30,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1015 [2020-10-27 16:35:30,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:35:30,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5052 [2020-10-27 16:35:30,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 16:35:30,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 16:35:30,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 769 [2020-10-27 16:35:30,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 16:35:35,564 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 50 [2020-10-27 16:35:35,919 WARN L193 SmtUtils]: Spent 339.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 71 [2020-10-27 16:35:36,185 WARN L193 SmtUtils]: Spent 245.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-27 16:35:36,474 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 73 DAG size of output: 69 [2020-10-27 16:35:36,724 WARN L193 SmtUtils]: Spent 222.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-27 16:35:36,981 WARN L193 SmtUtils]: Spent 225.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-27 16:35:37,234 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-27 16:35:37,474 WARN L193 SmtUtils]: Spent 198.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-27 16:35:37,672 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-27 16:35:37,883 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-27 16:35:38,085 WARN L193 SmtUtils]: Spent 157.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 54 [2020-10-27 16:35:38,254 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-27 16:35:38,410 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 55 [2020-10-27 16:35:38,590 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 56 [2020-10-27 16:35:38,788 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification. DAG size of input: 75 DAG size of output: 48 [2020-10-27 16:35:39,029 WARN L193 SmtUtils]: Spent 175.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:35:39,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:35:39,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:35:39,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:35:39,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:35:39,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:35:39,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:35:39,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 16:35:39,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:35:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:35:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:35:39,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 16:35:39,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:35:51,247 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 16:35:51,248 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [640394592] [2020-10-27 16:35:51,252 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 16:35:51,252 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 16:35:51,253 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [171706681] [2020-10-27 16:35:51,264 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 16:35:51,265 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:35:51,280 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 16:35:51,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-27 16:35:51,289 INFO L87 Difference]: Start difference. First operand 1319 states. Second operand 18 states. [2020-10-27 16:35:51,734 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification that was a NOOP. DAG size: 184 [2020-10-27 16:35:52,588 WARN L193 SmtUtils]: Spent 745.00 ms on a formula simplification. DAG size of input: 205 DAG size of output: 200 [2020-10-27 16:35:53,434 WARN L193 SmtUtils]: Spent 766.00 ms on a formula simplification. DAG size of input: 203 DAG size of output: 200 [2020-10-27 16:35:54,353 WARN L193 SmtUtils]: Spent 832.00 ms on a formula simplification. DAG size of input: 218 DAG size of output: 212 [2020-10-27 16:35:58,431 WARN L193 SmtUtils]: Spent 812.00 ms on a formula simplification. DAG size of input: 216 DAG size of output: 211 [2020-10-27 16:36:01,928 WARN L193 SmtUtils]: Spent 1.19 s on a formula simplification. DAG size of input: 221 DAG size of output: 210 [2020-10-27 16:36:04,399 WARN L193 SmtUtils]: Spent 683.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 197 [2020-10-27 16:36:05,260 WARN L193 SmtUtils]: Spent 788.00 ms on a formula simplification. DAG size of input: 213 DAG size of output: 207 [2020-10-27 16:36:06,332 WARN L193 SmtUtils]: Spent 728.00 ms on a formula simplification. DAG size of input: 211 DAG size of output: 206 [2020-10-27 16:36:15,524 WARN L193 SmtUtils]: Spent 652.00 ms on a formula simplification. DAG size of input: 198 DAG size of output: 195 [2020-10-27 16:36:16,371 WARN L193 SmtUtils]: Spent 765.00 ms on a formula simplification. DAG size of input: 208 DAG size of output: 204 [2020-10-27 16:36:19,279 WARN L193 SmtUtils]: Spent 713.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 203 [2020-10-27 16:36:26,639 WARN L193 SmtUtils]: Spent 712.00 ms on a formula simplification. DAG size of input: 201 DAG size of output: 193 [2020-10-27 16:36:27,547 WARN L193 SmtUtils]: Spent 784.00 ms on a formula simplification. DAG size of input: 210 DAG size of output: 202 [2020-10-27 16:36:30,196 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 206 DAG size of output: 197 [2020-10-27 16:36:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:36:42,052 INFO L93 Difference]: Finished difference Result 3401 states and 6365 transitions. [2020-10-27 16:36:42,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 16:36:42,054 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 997 [2020-10-27 16:36:42,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:36:42,118 INFO L225 Difference]: With dead ends: 3401 [2020-10-27 16:36:42,120 INFO L226 Difference]: Without dead ends: 2020 [2020-10-27 16:36:42,137 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 15.4s TimeCoverageRelationStatistics Valid=155, Invalid=901, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 16:36:42,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2020 states. [2020-10-27 16:36:42,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2020 to 2020. [2020-10-27 16:36:42,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2020 states. [2020-10-27 16:36:42,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2020 states to 2020 states and 3054 transitions. [2020-10-27 16:36:42,351 INFO L78 Accepts]: Start accepts. Automaton has 2020 states and 3054 transitions. Word has length 997 [2020-10-27 16:36:42,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:36:42,355 INFO L481 AbstractCegarLoop]: Abstraction has 2020 states and 3054 transitions. [2020-10-27 16:36:42,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 16:36:42,355 INFO L276 IsEmpty]: Start isEmpty. Operand 2020 states and 3054 transitions. [2020-10-27 16:36:42,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1068 [2020-10-27 16:36:42,421 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:36:42,423 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:36:42,424 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 16:36:42,424 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:36:42,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:36:42,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1220380627, now seen corresponding path program 1 times [2020-10-27 16:36:42,426 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:36:42,426 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378520411] [2020-10-27 16:36:42,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:36:42,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:42,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:45,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:47,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:47,805 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1087 [2020-10-27 16:36:47,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 16:36:47,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5206 [2020-10-27 16:36:47,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:47,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 16:36:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:36:47,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1003 [2020-10-27 16:36:47,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:36:49,041 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:36:49,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:36:49,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:49,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:49,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:49,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:36:49,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:36:49,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 16:36:49,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:36:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:36:49,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:36:49,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:36:49,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:36:49,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:36:49,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:36:49,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:36:49,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:36:49,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:36:49,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 16:36:49,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:36:49,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:36:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:36:49,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:36:49,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 16:36:50,934 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 66 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 16:36:50,934 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378520411] [2020-10-27 16:36:50,935 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:36:50,935 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 16:36:50,935 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370216627] [2020-10-27 16:36:50,938 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 16:36:50,939 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:36:50,939 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 16:36:50,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 16:36:50,940 INFO L87 Difference]: Start difference. First operand 2020 states and 3054 transitions. Second operand 6 states. [2020-10-27 16:36:51,160 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 160 [2020-10-27 16:36:51,721 WARN L193 SmtUtils]: Spent 206.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:37:15,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:37:15,726 INFO L93 Difference]: Finished difference Result 5491 states and 9497 transitions. [2020-10-27 16:37:15,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 16:37:15,727 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 1067 [2020-10-27 16:37:15,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:37:15,755 INFO L225 Difference]: With dead ends: 5491 [2020-10-27 16:37:15,755 INFO L226 Difference]: Without dead ends: 4231 [2020-10-27 16:37:15,760 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:37:15,767 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4231 states. [2020-10-27 16:37:15,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4231 to 4149. [2020-10-27 16:37:15,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4149 states. [2020-10-27 16:37:15,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4149 states to 4149 states and 6503 transitions. [2020-10-27 16:37:15,896 INFO L78 Accepts]: Start accepts. Automaton has 4149 states and 6503 transitions. Word has length 1067 [2020-10-27 16:37:15,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:37:15,898 INFO L481 AbstractCegarLoop]: Abstraction has 4149 states and 6503 transitions. [2020-10-27 16:37:15,898 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 16:37:15,898 INFO L276 IsEmpty]: Start isEmpty. Operand 4149 states and 6503 transitions. [2020-10-27 16:37:15,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1085 [2020-10-27 16:37:15,993 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:37:15,994 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:15,994 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 16:37:15,995 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:37:15,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:37:15,997 INFO L82 PathProgramCache]: Analyzing trace with hash 272474875, now seen corresponding path program 1 times [2020-10-27 16:37:15,997 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:37:15,998 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2028539191] [2020-10-27 16:37:15,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:37:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:16,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:16,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:18,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:21,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:21,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1106 [2020-10-27 16:37:21,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:37:21,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5058 [2020-10-27 16:37:21,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:37:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-10-27 16:37:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 16:37:21,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:22,203 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:37:22,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:37:22,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:22,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:22,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:22,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:37:22,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:22,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 16:37:22,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:37:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:22,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:37:22,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:22,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:37:22,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:22,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:22,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:22,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:37:22,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:22,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 16:37:22,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:37:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:22,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 16:37:22,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:22,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:37:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:22,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:22,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:22,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:37:22,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 16:37:22,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:37:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:37:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 16:37:22,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:23,538 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 95 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 16:37:23,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2028539191] [2020-10-27 16:37:23,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:37:23,539 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:37:23,539 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261935843] [2020-10-27 16:37:23,542 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:37:23,542 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:37:23,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:37:23,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:37:23,544 INFO L87 Difference]: Start difference. First operand 4149 states and 6503 transitions. Second operand 7 states. [2020-10-27 16:37:24,234 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:37:25,293 WARN L193 SmtUtils]: Spent 191.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:37:46,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:37:46,558 INFO L93 Difference]: Finished difference Result 10916 states and 18343 transitions. [2020-10-27 16:37:46,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 16:37:46,559 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1084 [2020-10-27 16:37:46,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:37:46,612 INFO L225 Difference]: With dead ends: 10916 [2020-10-27 16:37:46,614 INFO L226 Difference]: Without dead ends: 7527 [2020-10-27 16:37:46,626 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:37:46,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7527 states. [2020-10-27 16:37:46,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7527 to 7398. [2020-10-27 16:37:46,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7398 states. [2020-10-27 16:37:46,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7398 states to 7398 states and 10847 transitions. [2020-10-27 16:37:46,904 INFO L78 Accepts]: Start accepts. Automaton has 7398 states and 10847 transitions. Word has length 1084 [2020-10-27 16:37:46,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:37:46,905 INFO L481 AbstractCegarLoop]: Abstraction has 7398 states and 10847 transitions. [2020-10-27 16:37:46,905 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 16:37:46,905 INFO L276 IsEmpty]: Start isEmpty. Operand 7398 states and 10847 transitions. [2020-10-27 16:37:46,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2020-10-27 16:37:46,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:37:46,938 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:37:46,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 16:37:46,938 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:37:46,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:37:46,939 INFO L82 PathProgramCache]: Analyzing trace with hash -78639735, now seen corresponding path program 1 times [2020-10-27 16:37:46,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:37:46,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1090519787] [2020-10-27 16:37:46,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:37:47,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:47,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:47,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:52,197 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:52,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1120 [2020-10-27 16:37:52,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:37:52,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5108 [2020-10-27 16:37:52,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:52,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:37:52,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 16:37:52,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 16:37:52,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:52,698 WARN L193 SmtUtils]: Spent 166.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:37:52,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:37:52,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:52,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:52,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:52,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:37:52,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:52,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 16:37:52,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:37:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:52,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:37:52,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:52,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:37:52,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:52,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:52,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:52,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:37:52,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:52,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 16:37:52,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:37:52,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:52,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:37:52,869 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:52,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:37:52,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:52,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:52,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:52,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:37:52,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:52,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 16:37:52,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:52,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:37:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:37:52,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 16:37:52,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:52,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 16:37:52,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:37:52,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:37:53,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:37:53,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 16:37:53,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:37:53,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-10-27 16:37:53,032 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:37:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:37:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:37:53,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 16:37:53,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:37:53,890 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 118 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 16:37:53,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1090519787] [2020-10-27 16:37:53,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:37:53,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 16:37:53,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932115784] [2020-10-27 16:37:53,892 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 16:37:53,892 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:37:53,893 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 16:37:53,893 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-10-27 16:37:53,894 INFO L87 Difference]: Start difference. First operand 7398 states and 10847 transitions. Second operand 8 states. [2020-10-27 16:37:54,120 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:37:55,875 WARN L193 SmtUtils]: Spent 209.00 ms on a formula simplification that was a NOOP. DAG size: 164 [2020-10-27 16:38:15,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 16:38:15,864 INFO L93 Difference]: Finished difference Result 16578 states and 25209 transitions. [2020-10-27 16:38:15,865 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 16:38:15,865 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1096 [2020-10-27 16:38:15,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 16:38:15,913 INFO L225 Difference]: With dead ends: 16578 [2020-10-27 16:38:15,913 INFO L226 Difference]: Without dead ends: 9940 [2020-10-27 16:38:15,931 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-27 16:38:15,942 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9940 states. [2020-10-27 16:38:16,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9940 to 9743. [2020-10-27 16:38:16,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9743 states. [2020-10-27 16:38:16,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9743 states to 9743 states and 14388 transitions. [2020-10-27 16:38:16,239 INFO L78 Accepts]: Start accepts. Automaton has 9743 states and 14388 transitions. Word has length 1096 [2020-10-27 16:38:16,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 16:38:16,239 INFO L481 AbstractCegarLoop]: Abstraction has 9743 states and 14388 transitions. [2020-10-27 16:38:16,239 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 16:38:16,240 INFO L276 IsEmpty]: Start isEmpty. Operand 9743 states and 14388 transitions. [2020-10-27 16:38:16,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1098 [2020-10-27 16:38:16,287 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 16:38:16,288 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 16:38:16,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 16:38:16,288 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 16:38:16,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 16:38:16,289 INFO L82 PathProgramCache]: Analyzing trace with hash 92235355, now seen corresponding path program 1 times [2020-10-27 16:38:16,289 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 16:38:16,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2103262095] [2020-10-27 16:38:16,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 16:38:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:38:16,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:17,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:21,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:38:21,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1121 [2020-10-27 16:38:21,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 16:38:21,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-10-27 16:38:21,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:38:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:38:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 16:38:21,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 16:38:21,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:38:21,815 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification that was a NOOP. DAG size: 157 [2020-10-27 16:38:21,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 16:38:21,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:38:21,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:21,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:38:21,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 16:38:21,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:38:21,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 16:38:21,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:38:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:38:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:38:21,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:38:21,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:38:21,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 16:38:21,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:38:21,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:21,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:38:21,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 16:38:21,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:38:21,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 16:38:21,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:38:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 16:38:21,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:38:21,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 16:38:21,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:38:21,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-10-27 16:38:22,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:38:22,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:22,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:38:22,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-10-27 16:38:22,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:38:22,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 16:38:22,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:38:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 16:38:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 16:38:22,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 16:38:22,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:38:22,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-10-27 16:38:22,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 16:38:22,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 16:38:22,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 16:38:22,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 16:38:22,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 16:38:22,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 16:38:22,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 16:38:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 16:38:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 16:38:22,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 16:38:22,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 16:38:22,716 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 120 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 16:38:22,717 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2103262095] [2020-10-27 16:38:22,717 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 16:38:22,717 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 16:38:22,717 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249191672] [2020-10-27 16:38:22,718 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 16:38:22,719 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 16:38:22,720 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 16:38:22,720 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 16:38:22,720 INFO L87 Difference]: Start difference. First operand 9743 states and 14388 transitions. Second operand 7 states. [2020-10-27 16:38:23,496 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification that was a NOOP. DAG size: 159 [2020-10-27 16:38:25,118 WARN L193 SmtUtils]: Spent 196.00 ms on a formula simplification that was a NOOP. DAG size: 159