/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem12_label28.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:44:48,687 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:44:48,690 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:44:48,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:44:48,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:44:48,755 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:44:48,758 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:44:48,764 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:44:48,768 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:44:48,776 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:44:48,778 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:44:48,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:44:48,780 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:44:48,784 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:44:48,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:44:48,790 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:44:48,792 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:44:48,797 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:44:48,807 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:44:48,815 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:44:48,818 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:44:48,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:44:48,821 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:44:48,825 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:44:48,834 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:44:48,835 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:44:48,835 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:44:48,836 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:44:48,840 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:44:48,841 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:44:48,841 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:44:48,843 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:44:48,845 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:44:48,846 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:44:48,847 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:44:48,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:44:48,848 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:44:48,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:44:48,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:44:48,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:44:48,851 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:44:48,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:44:48,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:44:48,915 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:44:48,919 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:44:48,920 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:44:48,920 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:44:48,920 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:44:48,920 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:44:48,921 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:44:48,921 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:44:48,921 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:44:48,921 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:44:48,921 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:44:48,922 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:44:48,922 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:44:48,924 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:44:48,924 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:44:48,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:44:48,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:44:48,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:44:48,925 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:44:48,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:44:48,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:44:48,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:44:48,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:44:48,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:44:48,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:44:48,927 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:44:48,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:44:48,928 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:44:48,928 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:44:49,343 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:44:49,389 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:44:49,398 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:44:49,399 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:44:49,400 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:44:49,401 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem12_label28.c [2020-10-27 17:44:49,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86073d204/3e0b77385ab4479198fc8c8512ff29ec/FLAG9a4970e35 [2020-10-27 17:44:50,430 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:44:50,431 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem12_label28.c [2020-10-27 17:44:50,484 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86073d204/3e0b77385ab4479198fc8c8512ff29ec/FLAG9a4970e35 [2020-10-27 17:44:50,971 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/86073d204/3e0b77385ab4479198fc8c8512ff29ec [2020-10-27 17:44:50,975 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:44:50,982 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:44:50,984 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:44:50,984 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:44:50,989 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:44:50,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:44:50" (1/1) ... [2020-10-27 17:44:50,994 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5034e69a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:50, skipping insertion in model container [2020-10-27 17:44:50,994 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:44:50" (1/1) ... [2020-10-27 17:44:51,004 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:44:51,163 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:44:52,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:44:52,527 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:44:53,183 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:44:53,220 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:44:53,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53 WrapperNode [2020-10-27 17:44:53,220 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:44:53,222 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:44:53,222 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:44:53,222 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:44:53,237 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53" (1/1) ... [2020-10-27 17:44:53,239 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53" (1/1) ... [2020-10-27 17:44:53,331 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53" (1/1) ... [2020-10-27 17:44:53,331 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53" (1/1) ... [2020-10-27 17:44:53,449 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53" (1/1) ... [2020-10-27 17:44:53,477 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53" (1/1) ... [2020-10-27 17:44:53,513 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53" (1/1) ... [2020-10-27 17:44:53,546 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:44:53,549 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:44:53,549 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:44:53,549 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:44:53,551 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:44:53,646 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:44:53,647 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:44:53,647 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:44:53,647 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:44:53,647 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 17:44:53,647 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output3 [2020-10-27 17:44:53,648 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output4 [2020-10-27 17:44:53,648 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:44:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:44:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 17:44:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output3 [2020-10-27 17:44:53,648 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output4 [2020-10-27 17:44:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:44:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:44:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:44:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:44:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:44:53,649 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:44:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:44:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:44:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:44:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:44:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:44:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:44:53,650 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:44:59,498 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:44:59,498 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:44:59,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:44:59 BoogieIcfgContainer [2020-10-27 17:44:59,502 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:44:59,504 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:44:59,504 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:44:59,508 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:44:59,508 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:44:50" (1/3) ... [2020-10-27 17:44:59,509 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d25f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:44:59, skipping insertion in model container [2020-10-27 17:44:59,509 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:44:53" (2/3) ... [2020-10-27 17:44:59,510 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11d25f30 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:44:59, skipping insertion in model container [2020-10-27 17:44:59,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:44:59" (3/3) ... [2020-10-27 17:44:59,512 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem12_label28.c [2020-10-27 17:44:59,525 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:44:59,531 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:44:59,544 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:44:59,582 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:44:59,582 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:44:59,583 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:44:59,583 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:44:59,583 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:44:59,583 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:44:59,583 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:44:59,583 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:44:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 843 states. [2020-10-27 17:44:59,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 17:44:59,656 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:44:59,658 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] [2020-10-27 17:44:59,659 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:44:59,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:44:59,676 INFO L82 PathProgramCache]: Analyzing trace with hash -1360257956, now seen corresponding path program 1 times [2020-10-27 17:44:59,688 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:44:59,689 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1486206257] [2020-10-27 17:44:59,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:44:59,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:00,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:00,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:00,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 17:45:00,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:00,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-27 17:45:00,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:45:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:45:00,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 17:45:00,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:45:00,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:00,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:00,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:00,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:00,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:00,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:00,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 17:45:00,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:00,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:45:00,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:45:00,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1486206257] [2020-10-27 17:45:00,805 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:45:00,805 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 17:45:00,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306390680] [2020-10-27 17:45:00,811 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 17:45:00,812 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:00,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 17:45:00,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 17:45:00,831 INFO L87 Difference]: Start difference. First operand 843 states. Second operand 4 states. [2020-10-27 17:45:10,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:10,812 INFO L93 Difference]: Finished difference Result 2476 states and 4741 transitions. [2020-10-27 17:45:10,814 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:10,815 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-10-27 17:45:10,816 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:10,860 INFO L225 Difference]: With dead ends: 2476 [2020-10-27 17:45:10,860 INFO L226 Difference]: Without dead ends: 1569 [2020-10-27 17:45:10,874 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:10,897 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2020-10-27 17:45:11,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 1556. [2020-10-27 17:45:11,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1556 states. [2020-10-27 17:45:11,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1556 states to 1556 states and 2404 transitions. [2020-10-27 17:45:11,091 INFO L78 Accepts]: Start accepts. Automaton has 1556 states and 2404 transitions. Word has length 27 [2020-10-27 17:45:11,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:11,092 INFO L481 AbstractCegarLoop]: Abstraction has 1556 states and 2404 transitions. [2020-10-27 17:45:11,092 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 17:45:11,092 INFO L276 IsEmpty]: Start isEmpty. Operand 1556 states and 2404 transitions. [2020-10-27 17:45:11,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-10-27 17:45:11,101 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:11,102 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] [2020-10-27 17:45:11,102 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:45:11,103 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:11,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:11,105 INFO L82 PathProgramCache]: Analyzing trace with hash -736456835, now seen corresponding path program 1 times [2020-10-27 17:45:11,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:11,106 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1026301922] [2020-10-27 17:45:11,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:11,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:11,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:12,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:12,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-27 17:45:12,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:45:12,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1179 [2020-10-27 17:45:12,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 85 [2020-10-27 17:45:12,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 17:45:12,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:45:12,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:12,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:12,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:12,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:12,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:12,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:45:12,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:12,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:12,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:45:12,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:12,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:12,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:12,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:12,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:45:12,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:12,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 17:45:12,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:12,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:12,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 17:45:12,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:12,696 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:45:12,697 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1026301922] [2020-10-27 17:45:12,697 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:12,697 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:12,697 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201391437] [2020-10-27 17:45:12,699 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:12,700 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:12,700 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:12,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:12,701 INFO L87 Difference]: Start difference. First operand 1556 states and 2404 transitions. Second operand 5 states. [2020-10-27 17:45:28,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:28,519 INFO L93 Difference]: Finished difference Result 4675 states and 7283 transitions. [2020-10-27 17:45:28,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:28,520 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 102 [2020-10-27 17:45:28,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:28,544 INFO L225 Difference]: With dead ends: 4675 [2020-10-27 17:45:28,545 INFO L226 Difference]: Without dead ends: 3125 [2020-10-27 17:45:28,550 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:45:28,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3125 states. [2020-10-27 17:45:28,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3125 to 3118. [2020-10-27 17:45:28,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3118 states. [2020-10-27 17:45:28,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 4282 transitions. [2020-10-27 17:45:28,664 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 4282 transitions. Word has length 102 [2020-10-27 17:45:28,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:28,665 INFO L481 AbstractCegarLoop]: Abstraction has 3118 states and 4282 transitions. [2020-10-27 17:45:28,665 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:28,665 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 4282 transitions. [2020-10-27 17:45:28,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 17:45:28,676 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:28,677 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] [2020-10-27 17:45:28,677 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:45:28,678 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:28,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:28,680 INFO L82 PathProgramCache]: Analyzing trace with hash 172638345, now seen corresponding path program 1 times [2020-10-27 17:45:28,680 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:28,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [415739172] [2020-10-27 17:45:28,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:28,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:28,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:29,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:29,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:29,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 17:45:29,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:45:29,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1150 [2020-10-27 17:45:29,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 91 [2020-10-27 17:45:29,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 17:45:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:30,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:30,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:30,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:30,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:30,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:30,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:30,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:45:30,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:30,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:30,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:30,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:30,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:30,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:30,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:45:30,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:30,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 17:45:30,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:30,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 17:45:30,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:30,221 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:45:30,222 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [415739172] [2020-10-27 17:45:30,222 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:30,222 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:30,222 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112276550] [2020-10-27 17:45:30,223 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:30,223 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:30,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:30,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:30,224 INFO L87 Difference]: Start difference. First operand 3118 states and 4282 transitions. Second operand 5 states. [2020-10-27 17:45:44,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:44,337 INFO L93 Difference]: Finished difference Result 9344 states and 13010 transitions. [2020-10-27 17:45:44,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:44,338 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 108 [2020-10-27 17:45:44,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:44,371 INFO L225 Difference]: With dead ends: 9344 [2020-10-27 17:45:44,371 INFO L226 Difference]: Without dead ends: 6232 [2020-10-27 17:45:44,380 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:45:44,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6232 states. [2020-10-27 17:45:44,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6232 to 6221. [2020-10-27 17:45:44,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6221 states. [2020-10-27 17:45:44,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6221 states to 6221 states and 8112 transitions. [2020-10-27 17:45:44,585 INFO L78 Accepts]: Start accepts. Automaton has 6221 states and 8112 transitions. Word has length 108 [2020-10-27 17:45:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:45:44,587 INFO L481 AbstractCegarLoop]: Abstraction has 6221 states and 8112 transitions. [2020-10-27 17:45:44,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:45:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 6221 states and 8112 transitions. [2020-10-27 17:45:44,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2020-10-27 17:45:44,599 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:45:44,600 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] [2020-10-27 17:45:44,600 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:45:44,601 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:45:44,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:45:44,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1094532715, now seen corresponding path program 1 times [2020-10-27 17:45:44,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:45:44,605 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503131889] [2020-10-27 17:45:44,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:45:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:44,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:44,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:45,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:45,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-27 17:45:45,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:45:45,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1054 [2020-10-27 17:45:45,715 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:45:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 97 [2020-10-27 17:45:45,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 17:45:45,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:45,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:45:45,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:45,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:45,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:45,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:45:45,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:45,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:45:45,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:45:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:45,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:45:45,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:45,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:45:45,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:45:45,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:45:46,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:45:46,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 17:45:46,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:45:46,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-10-27 17:45:46,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:45:46,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:45:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:45:46,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 17:45:46,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:45:46,088 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:45:46,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503131889] [2020-10-27 17:45:46,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:45:46,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:45:46,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77445] [2020-10-27 17:45:46,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:45:46,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:45:46,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:45:46,091 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:45:46,091 INFO L87 Difference]: Start difference. First operand 6221 states and 8112 transitions. Second operand 5 states. [2020-10-27 17:45:59,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:45:59,742 INFO L93 Difference]: Finished difference Result 14000 states and 18889 transitions. [2020-10-27 17:45:59,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:45:59,743 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 114 [2020-10-27 17:45:59,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:45:59,786 INFO L225 Difference]: With dead ends: 14000 [2020-10-27 17:45:59,787 INFO L226 Difference]: Without dead ends: 7785 [2020-10-27 17:45:59,801 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:45:59,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7785 states. [2020-10-27 17:45:59,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7785 to 7774. [2020-10-27 17:45:59,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7774 states. [2020-10-27 17:46:00,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7774 states to 7774 states and 9892 transitions. [2020-10-27 17:46:00,015 INFO L78 Accepts]: Start accepts. Automaton has 7774 states and 9892 transitions. Word has length 114 [2020-10-27 17:46:00,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:00,017 INFO L481 AbstractCegarLoop]: Abstraction has 7774 states and 9892 transitions. [2020-10-27 17:46:00,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:00,017 INFO L276 IsEmpty]: Start isEmpty. Operand 7774 states and 9892 transitions. [2020-10-27 17:46:00,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-10-27 17:46:00,020 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:00,020 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] [2020-10-27 17:46:00,021 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:46:00,021 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:00,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:00,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1655235525, now seen corresponding path program 1 times [2020-10-27 17:46:00,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:00,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1110694433] [2020-10-27 17:46:00,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:00,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:00,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:00,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:02,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:02,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 187 [2020-10-27 17:46:02,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:46:02,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1938 [2020-10-27 17:46:02,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 17:46:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 17:46:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:02,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:02,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:02,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:02,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:02,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:02,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:02,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:46:02,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:02,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:02,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:02,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:02,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:02,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:02,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:02,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 17:46:02,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:02,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 17:46:02,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:02,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:02,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 17:46:02,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:02,518 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 18 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:46:02,519 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1110694433] [2020-10-27 17:46:02,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:02,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:02,519 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700482543] [2020-10-27 17:46:02,520 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:02,520 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:02,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:02,521 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:02,522 INFO L87 Difference]: Start difference. First operand 7774 states and 9892 transitions. Second operand 5 states. [2020-10-27 17:46:17,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:17,641 INFO L93 Difference]: Finished difference Result 18650 states and 24563 transitions. [2020-10-27 17:46:17,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:17,642 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-10-27 17:46:17,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:17,690 INFO L225 Difference]: With dead ends: 18650 [2020-10-27 17:46:17,690 INFO L226 Difference]: Without dead ends: 10882 [2020-10-27 17:46:17,710 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:17,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10882 states. [2020-10-27 17:46:17,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10882 to 10874. [2020-10-27 17:46:17,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10874 states. [2020-10-27 17:46:17,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10874 states to 10874 states and 13512 transitions. [2020-10-27 17:46:17,976 INFO L78 Accepts]: Start accepts. Automaton has 10874 states and 13512 transitions. Word has length 175 [2020-10-27 17:46:17,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:17,977 INFO L481 AbstractCegarLoop]: Abstraction has 10874 states and 13512 transitions. [2020-10-27 17:46:17,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:17,977 INFO L276 IsEmpty]: Start isEmpty. Operand 10874 states and 13512 transitions. [2020-10-27 17:46:17,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2020-10-27 17:46:17,982 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:17,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:46:17,983 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:46:17,983 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:17,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:17,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2006302862, now seen corresponding path program 1 times [2020-10-27 17:46:17,984 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:17,984 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1300032305] [2020-10-27 17:46:17,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:18,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:18,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:18,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:18,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:18,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:20,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:21,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:21,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 17:46:21,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:46:21,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3356 [2020-10-27 17:46:21,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:21,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:21,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 191 [2020-10-27 17:46:21,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 17:46:21,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:21,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:21,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:21,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:21,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:21,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:21,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:21,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:46:21,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:21,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:21,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:21,561 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:21,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:21,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:21,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:21,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:46:21,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:21,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 17:46:21,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:21,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:21,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:46:21,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:46:21,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:21,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:21,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 17:46:21,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:21,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 17:46:21,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:21,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:21,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:21,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-27 17:46:21,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:21,830 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:46:21,830 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1300032305] [2020-10-27 17:46:21,832 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:21,832 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:46:21,832 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195112718] [2020-10-27 17:46:21,833 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:46:21,833 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:21,834 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:46:21,834 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:46:21,834 INFO L87 Difference]: Start difference. First operand 10874 states and 13512 transitions. Second operand 5 states. [2020-10-27 17:46:37,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:46:37,176 INFO L93 Difference]: Finished difference Result 31047 states and 39589 transitions. [2020-10-27 17:46:37,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:46:37,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 206 [2020-10-27 17:46:37,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:46:37,245 INFO L225 Difference]: With dead ends: 31047 [2020-10-27 17:46:37,245 INFO L226 Difference]: Without dead ends: 20179 [2020-10-27 17:46:37,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:37,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20179 states. [2020-10-27 17:46:37,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20179 to 19396. [2020-10-27 17:46:37,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19396 states. [2020-10-27 17:46:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19396 states to 19396 states and 23318 transitions. [2020-10-27 17:46:37,739 INFO L78 Accepts]: Start accepts. Automaton has 19396 states and 23318 transitions. Word has length 206 [2020-10-27 17:46:37,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:46:37,740 INFO L481 AbstractCegarLoop]: Abstraction has 19396 states and 23318 transitions. [2020-10-27 17:46:37,740 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:46:37,740 INFO L276 IsEmpty]: Start isEmpty. Operand 19396 states and 23318 transitions. [2020-10-27 17:46:37,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-10-27 17:46:37,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:46:37,746 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:46:37,746 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:46:37,746 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:46:37,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:46:37,748 INFO L82 PathProgramCache]: Analyzing trace with hash -1485960884, now seen corresponding path program 1 times [2020-10-27 17:46:37,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:46:37,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [926271004] [2020-10-27 17:46:37,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:46:37,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:37,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:37,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:38,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:41,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:41,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 223 [2020-10-27 17:46:41,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:46:41,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3243 [2020-10-27 17:46:41,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:46:41,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 194 [2020-10-27 17:46:41,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 17:46:41,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:41,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:46:41,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:41,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:41,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:41,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:46:41,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:41,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:46:41,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:41,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:41,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:41,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:46:41,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:41,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:41,290 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:41,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 17:46:41,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:41,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 17:46:41,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:46:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:41,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:46:41,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:41,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2020-10-27 17:46:41,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:46:41,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:46:41,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:46:41,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 17:46:41,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:46:41,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 17:46:41,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:46:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:46:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:46:41,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 17:46:41,429 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:46:41,515 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 17:46:41,515 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [926271004] [2020-10-27 17:46:41,516 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:46:41,516 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-27 17:46:41,516 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177570291] [2020-10-27 17:46:41,517 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 17:46:41,517 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:46:41,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 17:46:41,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:46:41,519 INFO L87 Difference]: Start difference. First operand 19396 states and 23318 transitions. Second operand 6 states. [2020-10-27 17:47:02,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:02,172 INFO L93 Difference]: Finished difference Result 47318 states and 58560 transitions. [2020-10-27 17:47:02,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 17:47:02,174 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 209 [2020-10-27 17:47:02,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:02,279 INFO L225 Difference]: With dead ends: 47318 [2020-10-27 17:47:02,279 INFO L226 Difference]: Without dead ends: 27928 [2020-10-27 17:47:02,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:47:02,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27928 states. [2020-10-27 17:47:02,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27928 to 27924. [2020-10-27 17:47:02,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27924 states. [2020-10-27 17:47:02,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27924 states to 27924 states and 33477 transitions. [2020-10-27 17:47:02,930 INFO L78 Accepts]: Start accepts. Automaton has 27924 states and 33477 transitions. Word has length 209 [2020-10-27 17:47:02,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:02,931 INFO L481 AbstractCegarLoop]: Abstraction has 27924 states and 33477 transitions. [2020-10-27 17:47:02,931 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 17:47:02,931 INFO L276 IsEmpty]: Start isEmpty. Operand 27924 states and 33477 transitions. [2020-10-27 17:47:02,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-10-27 17:47:02,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:02,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:47:02,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:47:02,938 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:02,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:02,939 INFO L82 PathProgramCache]: Analyzing trace with hash -697262366, now seen corresponding path program 1 times [2020-10-27 17:47:02,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:02,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496199905] [2020-10-27 17:47:02,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:02,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:03,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:03,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:03,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:04,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:04,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:04,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-10-27 17:47:04,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:47:04,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1385 [2020-10-27 17:47:04,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 201 [2020-10-27 17:47:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 17:47:04,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:04,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:04,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:04,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:04,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:04,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:47:04,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:04,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:04,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:04,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:04,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:04,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:04,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:04,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 17:47:04,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:04,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 17:47:04,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:04,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:04,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:04,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2020-10-27 17:47:04,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:04,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:04,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:04,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-10-27 17:47:04,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:04,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 17:47:04,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:04,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:04,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 109 [2020-10-27 17:47:04,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:04,863 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2020-10-27 17:47:04,864 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496199905] [2020-10-27 17:47:04,864 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:04,864 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:04,865 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217864515] [2020-10-27 17:47:04,865 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:04,866 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:04,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:04,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:04,867 INFO L87 Difference]: Start difference. First operand 27924 states and 33477 transitions. Second operand 5 states. [2020-10-27 17:47:21,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:21,675 INFO L93 Difference]: Finished difference Result 64376 states and 79363 transitions. [2020-10-27 17:47:21,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:21,678 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 216 [2020-10-27 17:47:21,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:21,827 INFO L225 Difference]: With dead ends: 64376 [2020-10-27 17:47:21,827 INFO L226 Difference]: Without dead ends: 37225 [2020-10-27 17:47:21,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:22,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37225 states. [2020-10-27 17:47:22,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37225 to 37221. [2020-10-27 17:47:22,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37221 states. [2020-10-27 17:47:22,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37221 states to 37221 states and 45112 transitions. [2020-10-27 17:47:22,742 INFO L78 Accepts]: Start accepts. Automaton has 37221 states and 45112 transitions. Word has length 216 [2020-10-27 17:47:22,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:22,743 INFO L481 AbstractCegarLoop]: Abstraction has 37221 states and 45112 transitions. [2020-10-27 17:47:22,743 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:22,743 INFO L276 IsEmpty]: Start isEmpty. Operand 37221 states and 45112 transitions. [2020-10-27 17:47:22,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 572 [2020-10-27 17:47:22,816 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:22,817 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:47:22,817 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:47:22,817 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:22,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:22,818 INFO L82 PathProgramCache]: Analyzing trace with hash -628944038, now seen corresponding path program 1 times [2020-10-27 17:47:22,818 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:22,819 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [240375561] [2020-10-27 17:47:22,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:22,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:22,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:23,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:24,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:24,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:27,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 587 [2020-10-27 17:47:27,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:47:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5049 [2020-10-27 17:47:27,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:27,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:47:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 555 [2020-10-27 17:47:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 17:47:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 17:47:28,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:28,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:28,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:28,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:28,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:28,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:47:28,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:28,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:28,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:28,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:28,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:28,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:28,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:28,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-27 17:47:28,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:28,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:47:28,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:28,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:28,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:28,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2020-10-27 17:47:28,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:28,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:29,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:29,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 466 [2020-10-27 17:47:29,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:29,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 603 [2020-10-27 17:47:29,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:29,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:29,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 457 [2020-10-27 17:47:29,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:29,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:47:29,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:29,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:29,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:29,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 178 [2020-10-27 17:47:29,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:29,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-27 17:47:29,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:29,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:29,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 172 [2020-10-27 17:47:29,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:30,043 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 39 proven. 2 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2020-10-27 17:47:30,043 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [240375561] [2020-10-27 17:47:30,043 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:47:30,044 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:47:30,044 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1633529819] [2020-10-27 17:47:30,045 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:47:30,045 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:47:30,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:47:30,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:47:30,046 INFO L87 Difference]: Start difference. First operand 37221 states and 45112 transitions. Second operand 5 states. [2020-10-27 17:47:48,995 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:47:48,995 INFO L93 Difference]: Finished difference Result 91468 states and 113943 transitions. [2020-10-27 17:47:48,998 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:47:48,998 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 571 [2020-10-27 17:47:49,000 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:47:49,217 INFO L225 Difference]: With dead ends: 91468 [2020-10-27 17:47:49,217 INFO L226 Difference]: Without dead ends: 55020 [2020-10-27 17:47:49,273 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:47:49,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55020 states. [2020-10-27 17:47:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55020 to 55016. [2020-10-27 17:47:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55016 states. [2020-10-27 17:47:50,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55016 states to 55016 states and 65952 transitions. [2020-10-27 17:47:50,345 INFO L78 Accepts]: Start accepts. Automaton has 55016 states and 65952 transitions. Word has length 571 [2020-10-27 17:47:50,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:47:50,346 INFO L481 AbstractCegarLoop]: Abstraction has 55016 states and 65952 transitions. [2020-10-27 17:47:50,346 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:47:50,347 INFO L276 IsEmpty]: Start isEmpty. Operand 55016 states and 65952 transitions. [2020-10-27 17:47:50,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 599 [2020-10-27 17:47:50,809 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:47:50,812 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:47:50,813 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:47:50,813 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:47:50,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:47:50,814 INFO L82 PathProgramCache]: Analyzing trace with hash -957878418, now seen corresponding path program 1 times [2020-10-27 17:47:50,814 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:47:50,818 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662155117] [2020-10-27 17:47:50,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:47:51,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:51,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:51,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:52,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:56,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:56,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 614 [2020-10-27 17:47:56,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:47:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5066 [2020-10-27 17:47:56,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:47:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 158 [2020-10-27 17:47:56,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 425 [2020-10-27 17:47:56,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:56,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:47:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:56,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:56,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:56,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:47:56,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:47:56,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:47:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:56,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:47:56,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:56,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:47:56,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:56,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:57,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:47:57,010 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-10-27 17:47:57,010 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:47:57,010 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 17:47:57,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:47:57,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:47:57,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:47:57,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 17:47:57,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:47:57,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2020-10-27 17:47:57,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:47:57,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:47:57,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:00,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:00,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-27 17:48:00,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:48:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3717 [2020-10-27 17:48:00,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:48:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:48:00,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 426 [2020-10-27 17:48:00,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:01,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 17:48:01,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:48:01,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:48:01,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:48:01,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-10-27 17:48:01,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:48:01,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 17:48:01,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:48:01,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:48:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:48:01,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-10-27 17:48:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:48:02,177 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 183 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:48:02,178 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662155117] [2020-10-27 17:48:02,178 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:48:02,178 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:48:02,178 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162602796] [2020-10-27 17:48:02,179 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:48:02,179 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:48:02,180 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:48:02,180 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:48:02,180 INFO L87 Difference]: Start difference. First operand 55016 states and 65952 transitions. Second operand 8 states. [2020-10-27 17:48:03,550 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 75 [2020-10-27 17:48:29,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:48:29,263 INFO L93 Difference]: Finished difference Result 117031 states and 144933 transitions. [2020-10-27 17:48:29,266 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:48:29,266 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 598 [2020-10-27 17:48:29,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:48:29,518 INFO L225 Difference]: With dead ends: 117031 [2020-10-27 17:48:29,519 INFO L226 Difference]: Without dead ends: 62788