/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem05_label10.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 21:13:11,316 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 21:13:11,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 21:13:11,376 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 21:13:11,376 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 21:13:11,383 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 21:13:11,385 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 21:13:11,390 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 21:13:11,395 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 21:13:11,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 21:13:11,404 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 21:13:11,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 21:13:11,406 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 21:13:11,410 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 21:13:11,412 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 21:13:11,414 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 21:13:11,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 21:13:11,428 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 21:13:11,435 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 21:13:11,443 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 21:13:11,445 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 21:13:11,447 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 21:13:11,448 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 21:13:11,451 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 21:13:11,457 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 21:13:11,458 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 21:13:11,458 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 21:13:11,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 21:13:11,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 21:13:11,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 21:13:11,465 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 21:13:11,466 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 21:13:11,468 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 21:13:11,469 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 21:13:11,470 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 21:13:11,470 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 21:13:11,471 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 21:13:11,471 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 21:13:11,471 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 21:13:11,472 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 21:13:11,473 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 21:13:11,481 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-26 21:13:11,531 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 21:13:11,531 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 21:13:11,535 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 21:13:11,535 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 21:13:11,536 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 21:13:11,536 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 21:13:11,536 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 21:13:11,536 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 21:13:11,536 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 21:13:11,537 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 21:13:11,538 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 21:13:11,538 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 21:13:11,538 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 21:13:11,538 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 21:13:11,539 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 21:13:11,539 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 21:13:11,539 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 21:13:11,539 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 21:13:11,540 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 21:13:11,540 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 21:13:11,540 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 21:13:11,540 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:13:11,541 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 21:13:11,541 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 21:13:11,541 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 21:13:11,541 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 21:13:11,541 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 21:13:11,542 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 21:13:11,542 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 21:13:11,542 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 21:13:11,940 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 21:13:11,969 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 21:13:11,972 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 21:13:11,974 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 21:13:11,976 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 21:13:11,977 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem05_label10.c [2020-10-26 21:13:12,063 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/181c1bd79/8a5a0214dad440808624320429539e6f/FLAGaa2a79f25 [2020-10-26 21:13:13,583 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 21:13:13,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem05_label10.c [2020-10-26 21:13:13,649 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/181c1bd79/8a5a0214dad440808624320429539e6f/FLAGaa2a79f25 [2020-10-26 21:13:14,027 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/181c1bd79/8a5a0214dad440808624320429539e6f [2020-10-26 21:13:14,032 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 21:13:14,042 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 21:13:14,046 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 21:13:14,047 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 21:13:14,051 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 21:13:14,052 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:13:14" (1/1) ... [2020-10-26 21:13:14,058 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f11e0d0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:14, skipping insertion in model container [2020-10-26 21:13:14,058 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 09:13:14" (1/1) ... [2020-10-26 21:13:14,067 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 21:13:14,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 21:13:16,644 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:13:16,662 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 21:13:17,833 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 21:13:17,908 INFO L208 MainTranslator]: Completed translation [2020-10-26 21:13:17,909 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17 WrapperNode [2020-10-26 21:13:17,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 21:13:17,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 21:13:17,912 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 21:13:17,912 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 21:13:17,927 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17" (1/1) ... [2020-10-26 21:13:17,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17" (1/1) ... [2020-10-26 21:13:18,042 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17" (1/1) ... [2020-10-26 21:13:18,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17" (1/1) ... [2020-10-26 21:13:18,294 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17" (1/1) ... [2020-10-26 21:13:18,352 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17" (1/1) ... [2020-10-26 21:13:18,402 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17" (1/1) ... [2020-10-26 21:13:18,464 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 21:13:18,467 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 21:13:18,467 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 21:13:18,467 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 21:13:18,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 21:13:18,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 21:13:18,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 21:13:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 21:13:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 21:13:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 21:13:18,707 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-26 21:13:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-26 21:13:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output5 [2020-10-26 21:13:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output6 [2020-10-26 21:13:18,708 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output7 [2020-10-26 21:13:18,709 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output8 [2020-10-26 21:13:18,709 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 21:13:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 21:13:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 21:13:18,710 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-26 21:13:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-26 21:13:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output5 [2020-10-26 21:13:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output6 [2020-10-26 21:13:18,711 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output7 [2020-10-26 21:13:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output8 [2020-10-26 21:13:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 21:13:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 21:13:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 21:13:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 21:13:18,712 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 21:13:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 21:13:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 21:13:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 21:13:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 21:13:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 21:13:18,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 21:13:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 21:13:18,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 21:13:28,740 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 21:13:28,741 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 21:13:28,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:13:28 BoogieIcfgContainer [2020-10-26 21:13:28,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 21:13:28,750 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 21:13:28,750 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 21:13:28,754 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 21:13:28,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 09:13:14" (1/3) ... [2020-10-26 21:13:28,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e936de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:13:28, skipping insertion in model container [2020-10-26 21:13:28,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 09:13:17" (2/3) ... [2020-10-26 21:13:28,756 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e936de0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 09:13:28, skipping insertion in model container [2020-10-26 21:13:28,756 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 09:13:28" (3/3) ... [2020-10-26 21:13:28,758 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label10.c [2020-10-26 21:13:28,770 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 21:13:28,777 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 21:13:28,790 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 21:13:28,833 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 21:13:28,833 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 21:13:28,833 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 21:13:28,833 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 21:13:28,834 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 21:13:28,834 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 21:13:28,834 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 21:13:28,834 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 21:13:28,885 INFO L276 IsEmpty]: Start isEmpty. Operand 2226 states. [2020-10-26 21:13:29,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1701 [2020-10-26 21:13:29,035 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:13:29,038 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:13:29,038 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:13:29,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:13:29,054 INFO L82 PathProgramCache]: Analyzing trace with hash -296581097, now seen corresponding path program 1 times [2020-10-26 21:13:29,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:13:29,067 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865129453] [2020-10-26 21:13:29,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:13:30,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:13:30,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:13:35,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:13:35,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1724 [2020-10-26 21:13:35,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:13:35,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5141 [2020-10-26 21:13:35,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:13:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-26 21:13:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:13:35,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1715 [2020-10-26 21:13:35,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 21:13:37,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:13:37,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:13:37,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:13:37,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:13:37,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:13:37,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:13:37,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-26 21:13:37,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:13:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:13:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:13:37,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:13:37,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:13:40,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:13:40,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865129453] [2020-10-26 21:13:40,395 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:13:40,395 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 21:13:40,396 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87598331] [2020-10-26 21:13:40,406 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 21:13:40,406 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:13:40,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 21:13:40,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 21:13:40,424 INFO L87 Difference]: Start difference. First operand 2226 states. Second operand 4 states. [2020-10-26 21:14:03,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:14:03,520 INFO L93 Difference]: Finished difference Result 6315 states and 11856 transitions. [2020-10-26 21:14:03,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 21:14:03,523 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 1700 [2020-10-26 21:14:03,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:14:03,584 INFO L225 Difference]: With dead ends: 6315 [2020-10-26 21:14:03,585 INFO L226 Difference]: Without dead ends: 4025 [2020-10-26 21:14:03,603 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 21:14:03,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4025 states. [2020-10-26 21:14:03,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4025 to 3998. [2020-10-26 21:14:03,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3998 states. [2020-10-26 21:14:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3998 states to 3998 states and 6428 transitions. [2020-10-26 21:14:03,847 INFO L78 Accepts]: Start accepts. Automaton has 3998 states and 6428 transitions. Word has length 1700 [2020-10-26 21:14:03,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:14:03,852 INFO L481 AbstractCegarLoop]: Abstraction has 3998 states and 6428 transitions. [2020-10-26 21:14:03,852 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 21:14:03,852 INFO L276 IsEmpty]: Start isEmpty. Operand 3998 states and 6428 transitions. [2020-10-26 21:14:04,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1710 [2020-10-26 21:14:04,009 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:14:04,010 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:14:04,011 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 21:14:04,011 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:14:04,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:14:04,012 INFO L82 PathProgramCache]: Analyzing trace with hash -905514989, now seen corresponding path program 1 times [2020-10-26 21:14:04,012 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:14:04,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868426998] [2020-10-26 21:14:04,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:14:04,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:04,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:06,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:09,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:09,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1735 [2020-10-26 21:14:09,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:14:09,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5163 [2020-10-26 21:14:09,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:14:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:14:09,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-26 21:14:09,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 21:14:10,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:14:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:10,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:10,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:10,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:14:10,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:14:10,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-26 21:14:10,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:14:10,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:14:10,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:14:10,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:10,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:14:10,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:10,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:10,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:10,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-26 21:14:10,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:14:10,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 21:14:10,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:14:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:14:10,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 21:14:10,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:11,860 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:14:11,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868426998] [2020-10-26 21:14:11,861 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:14:11,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:14:11,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017401494] [2020-10-26 21:14:11,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:14:11,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:14:11,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:14:11,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:14:11,867 INFO L87 Difference]: Start difference. First operand 3998 states and 6428 transitions. Second operand 7 states. [2020-10-26 21:14:43,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:14:43,694 INFO L93 Difference]: Finished difference Result 11930 states and 19289 transitions. [2020-10-26 21:14:43,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 21:14:43,695 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1709 [2020-10-26 21:14:43,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:14:43,743 INFO L225 Difference]: With dead ends: 11930 [2020-10-26 21:14:43,743 INFO L226 Difference]: Without dead ends: 7938 [2020-10-26 21:14:43,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:14:43,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7938 states. [2020-10-26 21:14:43,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7938 to 7745. [2020-10-26 21:14:43,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7745 states. [2020-10-26 21:14:43,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7745 states to 7745 states and 11188 transitions. [2020-10-26 21:14:43,996 INFO L78 Accepts]: Start accepts. Automaton has 7745 states and 11188 transitions. Word has length 1709 [2020-10-26 21:14:43,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:14:43,997 INFO L481 AbstractCegarLoop]: Abstraction has 7745 states and 11188 transitions. [2020-10-26 21:14:43,997 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:14:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 7745 states and 11188 transitions. [2020-10-26 21:14:44,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1712 [2020-10-26 21:14:44,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:14:44,075 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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:14:44,075 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 21:14:44,075 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:14:44,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:14:44,076 INFO L82 PathProgramCache]: Analyzing trace with hash 192053519, now seen corresponding path program 1 times [2020-10-26 21:14:44,077 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:14:44,077 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1590068468] [2020-10-26 21:14:44,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:14:44,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:44,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:45,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:49,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:49,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1737 [2020-10-26 21:14:49,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:14:49,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5085 [2020-10-26 21:14:49,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:14:49,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:14:49,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-26 21:14:49,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:50,251 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:14:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:50,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:50,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:50,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:14:50,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:14:50,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-26 21:14:50,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:14:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:14:50,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:14:50,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:50,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:14:50,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:14:50,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:14:50,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:14:50,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-10-26 21:14:50,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:14:50,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-26 21:14:50,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:14:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:14:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:14:50,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-26 21:14:50,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:14:51,717 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:14:51,718 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1590068468] [2020-10-26 21:14:51,718 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:14:51,718 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:14:51,718 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857849862] [2020-10-26 21:14:51,725 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:14:51,726 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:14:51,726 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:14:51,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:14:51,727 INFO L87 Difference]: Start difference. First operand 7745 states and 11188 transitions. Second operand 7 states. [2020-10-26 21:15:22,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:15:22,087 INFO L93 Difference]: Finished difference Result 23211 states and 34235 transitions. [2020-10-26 21:15:22,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:15:22,088 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1711 [2020-10-26 21:15:22,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:15:22,180 INFO L225 Difference]: With dead ends: 23211 [2020-10-26 21:15:22,180 INFO L226 Difference]: Without dead ends: 15472 [2020-10-26 21:15:22,206 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 21:15:22,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15472 states. [2020-10-26 21:15:22,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15472 to 15205. [2020-10-26 21:15:22,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15205 states. [2020-10-26 21:15:22,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15205 states to 15205 states and 20569 transitions. [2020-10-26 21:15:22,658 INFO L78 Accepts]: Start accepts. Automaton has 15205 states and 20569 transitions. Word has length 1711 [2020-10-26 21:15:22,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:15:22,663 INFO L481 AbstractCegarLoop]: Abstraction has 15205 states and 20569 transitions. [2020-10-26 21:15:22,663 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:15:22,663 INFO L276 IsEmpty]: Start isEmpty. Operand 15205 states and 20569 transitions. [2020-10-26 21:15:22,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1723 [2020-10-26 21:15:22,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:15:22,756 INFO L422 BasicCegarLoop]: trace histogram [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, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:15:22,757 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 21:15:22,757 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:15:22,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:15:22,759 INFO L82 PathProgramCache]: Analyzing trace with hash 666451480, now seen corresponding path program 1 times [2020-10-26 21:15:22,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:15:22,767 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [581298745] [2020-10-26 21:15:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:15:23,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:15:23,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:23,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:24,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:28,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:15:28,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1748 [2020-10-26 21:15:28,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:15:28,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5109 [2020-10-26 21:15:28,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:15:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 21:15:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:15:28,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-26 21:15:28,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:15:28,646 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:15:28,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:15:28,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:28,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:15:28,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:15:28,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:15:28,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-26 21:15:28,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:15:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:15:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:15:28,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:15:28,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:15:28,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:15:28,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:15:28,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:15:28,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:15:28,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-26 21:15:28,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:15:28,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-26 21:15:28,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:15:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:15:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:15:28,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-26 21:15:28,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:15:30,220 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 21:15:30,221 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [581298745] [2020-10-26 21:15:30,221 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 21:15:30,221 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 21:15:30,221 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656055271] [2020-10-26 21:15:30,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 21:15:30,224 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:15:30,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 21:15:30,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 21:15:30,225 INFO L87 Difference]: Start difference. First operand 15205 states and 20569 transitions. Second operand 7 states. [2020-10-26 21:15:59,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:15:59,274 INFO L93 Difference]: Finished difference Result 38349 states and 51545 transitions. [2020-10-26 21:15:59,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 21:15:59,275 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1722 [2020-10-26 21:15:59,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:15:59,373 INFO L225 Difference]: With dead ends: 38349 [2020-10-26 21:15:59,373 INFO L226 Difference]: Without dead ends: 23150 [2020-10-26 21:15:59,420 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 21:15:59,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23150 states. [2020-10-26 21:15:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23150 to 22821. [2020-10-26 21:15:59,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22821 states. [2020-10-26 21:16:00,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22821 states to 22821 states and 29165 transitions. [2020-10-26 21:16:00,061 INFO L78 Accepts]: Start accepts. Automaton has 22821 states and 29165 transitions. Word has length 1722 [2020-10-26 21:16:00,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:16:00,062 INFO L481 AbstractCegarLoop]: Abstraction has 22821 states and 29165 transitions. [2020-10-26 21:16:00,062 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 21:16:00,062 INFO L276 IsEmpty]: Start isEmpty. Operand 22821 states and 29165 transitions. [2020-10-26 21:16:00,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1829 [2020-10-26 21:16:00,202 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:16:00,206 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:16:00,206 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 21:16:00,207 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:16:00,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:16:00,208 INFO L82 PathProgramCache]: Analyzing trace with hash -1368846077, now seen corresponding path program 1 times [2020-10-26 21:16:00,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:16:00,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [463634056] [2020-10-26 21:16:00,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:16:00,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:00,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:01,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:03,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:05,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:05,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1856 [2020-10-26 21:16:05,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:16:05,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5162 [2020-10-26 21:16:05,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:16:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:16:05,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-26 21:16:05,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:06,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:16:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:06,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:06,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:06,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:16:06,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:16:06,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:16:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:16:06,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:16:06,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:06,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:16:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:06,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:06,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:06,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:06,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:16:06,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:16:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-26 21:16:06,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:16:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:16:06,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 21:16:06,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:06,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 21:16:06,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:06,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:06,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:06,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-26 21:16:06,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 21:16:06,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:16:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:16:06,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-26 21:16:06,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:08,935 INFO L134 CoverageAnalysis]: Checked inductivity of 133 backedges. 127 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:16:08,936 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [463634056] [2020-10-26 21:16:08,936 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:16:08,936 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:16:08,937 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743539021] [2020-10-26 21:16:08,939 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:16:08,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:16:08,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:16:08,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:16:08,940 INFO L87 Difference]: Start difference. First operand 22821 states and 29165 transitions. Second operand 8 states. [2020-10-26 21:16:36,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 21:16:36,820 INFO L93 Difference]: Finished difference Result 56733 states and 73042 transitions. [2020-10-26 21:16:36,821 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 21:16:36,821 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1828 [2020-10-26 21:16:36,822 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 21:16:36,924 INFO L225 Difference]: With dead ends: 56733 [2020-10-26 21:16:36,925 INFO L226 Difference]: Without dead ends: 33918 [2020-10-26 21:16:36,992 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-10-26 21:16:37,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33918 states. [2020-10-26 21:16:37,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33918 to 33712. [2020-10-26 21:16:37,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33712 states. [2020-10-26 21:16:37,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33712 states to 33712 states and 40068 transitions. [2020-10-26 21:16:37,742 INFO L78 Accepts]: Start accepts. Automaton has 33712 states and 40068 transitions. Word has length 1828 [2020-10-26 21:16:37,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 21:16:37,743 INFO L481 AbstractCegarLoop]: Abstraction has 33712 states and 40068 transitions. [2020-10-26 21:16:37,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-26 21:16:37,743 INFO L276 IsEmpty]: Start isEmpty. Operand 33712 states and 40068 transitions. [2020-10-26 21:16:37,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1832 [2020-10-26 21:16:37,833 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 21:16:37,834 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 21:16:37,835 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 21:16:37,835 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 21:16:37,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 21:16:37,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1849107046, now seen corresponding path program 1 times [2020-10-26 21:16:37,836 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 21:16:37,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1077485142] [2020-10-26 21:16:37,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 21:16:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:38,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:38,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:42,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:43,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:43,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1859 [2020-10-26 21:16:43,248 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 21:16:43,248 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5218 [2020-10-26 21:16:43,248 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 21:16:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 21:16:43,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-10-26 21:16:43,249 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:43,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 21:16:43,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:43,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:43,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:43,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 21:16:43,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:43,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-26 21:16:43,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:43,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 21:16:43,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 21:16:43,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 21:16:43,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:43,841 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 21:16:43,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:43,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:43,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:44,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:44,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-26 21:16:44,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 21:16:44,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-26 21:16:44,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:44,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:16:44,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:16:44,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 21:16:44,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:44,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2020-10-26 21:16:44,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 21:16:44,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 21:16:44,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 21:16:44,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-26 21:16:44,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 21:16:44,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-26 21:16:44,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 21:16:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 21:16:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 21:16:44,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-26 21:16:44,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 21:16:46,312 INFO L134 CoverageAnalysis]: Checked inductivity of 143 backedges. 137 proven. 2 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-26 21:16:46,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1077485142] [2020-10-26 21:16:46,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 21:16:46,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 21:16:46,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774572989] [2020-10-26 21:16:46,315 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-26 21:16:46,315 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 21:16:46,316 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-26 21:16:46,316 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-26 21:16:46,316 INFO L87 Difference]: Start difference. First operand 33712 states and 40068 transitions. Second operand 8 states.