/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/psyco/psyco_io_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:25:59,728 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:25:59,732 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:25:59,794 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:25:59,795 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:25:59,798 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:25:59,800 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:25:59,807 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:25:59,809 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:25:59,810 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:25:59,811 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:25:59,813 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:25:59,813 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:25:59,814 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:25:59,816 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:25:59,817 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:25:59,818 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:25:59,819 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:25:59,821 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:25:59,823 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:25:59,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:25:59,827 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:25:59,829 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:25:59,830 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:25:59,833 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:25:59,854 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:25:59,855 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:25:59,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:25:59,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:25:59,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:25:59,869 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:25:59,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:25:59,873 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:25:59,874 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:25:59,875 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:25:59,876 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:25:59,876 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:25:59,876 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:25:59,877 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:25:59,878 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:25:59,881 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:25:59,883 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 22:25:59,915 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:25:59,916 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:25:59,917 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:25:59,917 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:25:59,917 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:25:59,918 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:25:59,918 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:25:59,918 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:25:59,918 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:25:59,919 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:25:59,919 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:25:59,919 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:25:59,919 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:25:59,919 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:25:59,919 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:25:59,920 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:25:59,920 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:25:59,920 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:25:59,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:25:59,920 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:25:59,921 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:25:59,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:25:59,921 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:25:59,921 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:25:59,921 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:25:59,922 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:25:59,922 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:25:59,922 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:25:59,922 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:25:59,922 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:26:00,288 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:26:00,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:26:00,320 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:26:00,322 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:26:00,323 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:26:00,325 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/psyco/psyco_io_1.c [2020-10-27 22:26:00,410 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/330f6cc9d/34ffdbdc469f47a5b4a4ac69b408b846/FLAG489e6c208 [2020-10-27 22:26:01,041 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:26:01,042 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/psyco/psyco_io_1.c [2020-10-27 22:26:01,057 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/330f6cc9d/34ffdbdc469f47a5b4a4ac69b408b846/FLAG489e6c208 [2020-10-27 22:26:01,353 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/330f6cc9d/34ffdbdc469f47a5b4a4ac69b408b846 [2020-10-27 22:26:01,356 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:26:01,365 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:26:01,367 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:26:01,367 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:26:01,371 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:26:01,372 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:26:01" (1/1) ... [2020-10-27 22:26:01,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f522cc1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01, skipping insertion in model container [2020-10-27 22:26:01,376 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:26:01" (1/1) ... [2020-10-27 22:26:01,385 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:26:01,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:26:01,650 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:26:01,681 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:26:01,724 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:26:01,798 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:26:01,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01 WrapperNode [2020-10-27 22:26:01,801 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:26:01,802 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:26:01,803 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:26:01,803 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:26:01,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01" (1/1) ... [2020-10-27 22:26:01,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01" (1/1) ... [2020-10-27 22:26:01,833 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01" (1/1) ... [2020-10-27 22:26:01,834 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01" (1/1) ... [2020-10-27 22:26:01,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01" (1/1) ... [2020-10-27 22:26:01,875 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01" (1/1) ... [2020-10-27 22:26:01,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01" (1/1) ... [2020-10-27 22:26:01,883 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:26:01,884 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:26:01,885 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:26:01,885 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:26:01,888 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01" (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 22:26:01,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:26:01,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:26:01,996 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:26:01,996 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:26:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:26:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:26:01,996 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:26:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:26:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:26:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:26:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:26:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:26:01,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:26:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:26:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:26:01,998 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:26:02,729 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:26:02,730 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-27 22:26:02,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:26:02 BoogieIcfgContainer [2020-10-27 22:26:02,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:26:02,734 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:26:02,734 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:26:02,738 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:26:02,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:26:01" (1/3) ... [2020-10-27 22:26:02,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfea896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:26:02, skipping insertion in model container [2020-10-27 22:26:02,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:26:01" (2/3) ... [2020-10-27 22:26:02,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7dfea896 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:26:02, skipping insertion in model container [2020-10-27 22:26:02,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:26:02" (3/3) ... [2020-10-27 22:26:02,742 INFO L111 eAbstractionObserver]: Analyzing ICFG psyco_io_1.c [2020-10-27 22:26:02,755 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:26:02,761 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:26:02,776 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:26:02,806 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:26:02,807 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:26:02,807 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:26:02,807 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:26:02,807 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:26:02,808 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:26:02,808 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:26:02,808 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:26:02,829 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states. [2020-10-27 22:26:02,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 22:26:02,836 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:02,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:26:02,837 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:02,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:02,845 INFO L82 PathProgramCache]: Analyzing trace with hash 977275202, now seen corresponding path program 1 times [2020-10-27 22:26:02,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:02,856 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [443093614] [2020-10-27 22:26:02,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:03,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:03,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:03,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 22:26:03,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:03,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-27 22:26:03,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:26:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:03,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:26:03,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:03,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:03,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:03,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:03,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:03,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:03,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 22:26:03,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:03,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:03,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:03,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:03,489 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 22:26:03,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [443093614] [2020-10-27 22:26:03,498 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:03,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 22:26:03,500 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566048206] [2020-10-27 22:26:03,508 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 22:26:03,508 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:03,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 22:26:03,532 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:26:03,534 INFO L87 Difference]: Start difference. First operand 77 states. Second operand 3 states. [2020-10-27 22:26:03,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:03,637 INFO L93 Difference]: Finished difference Result 141 states and 256 transitions. [2020-10-27 22:26:03,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 22:26:03,639 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 14 [2020-10-27 22:26:03,640 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:03,650 INFO L225 Difference]: With dead ends: 141 [2020-10-27 22:26:03,650 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 22:26:03,654 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 22:26:03,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 22:26:03,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-27 22:26:03,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 22:26:03,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 92 transitions. [2020-10-27 22:26:03,704 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 92 transitions. Word has length 14 [2020-10-27 22:26:03,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:03,705 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 92 transitions. [2020-10-27 22:26:03,705 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 22:26:03,705 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 92 transitions. [2020-10-27 22:26:03,706 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 22:26:03,706 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:03,706 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:26:03,707 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:26:03,707 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:03,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:03,708 INFO L82 PathProgramCache]: Analyzing trace with hash -441817252, now seen corresponding path program 1 times [2020-10-27 22:26:03,708 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:03,709 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [26525343] [2020-10-27 22:26:03,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:03,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:03,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:03,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:03,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:04,072 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:04,072 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 22:26:04,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:26:04,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-27 22:26:04,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 22:26:04,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:26:04,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:26:04,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:04,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:04,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:04,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:04,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:04,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 22:26:04,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:04,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:04,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:04,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 22:26:04,210 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 22:26:04,210 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [26525343] [2020-10-27 22:26:04,210 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:04,211 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:04,211 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138557466] [2020-10-27 22:26:04,213 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:04,213 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:04,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:04,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:04,214 INFO L87 Difference]: Start difference. First operand 62 states and 92 transitions. Second operand 4 states. [2020-10-27 22:26:04,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:04,508 INFO L93 Difference]: Finished difference Result 121 states and 182 transitions. [2020-10-27 22:26:04,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:04,508 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 15 [2020-10-27 22:26:04,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:04,510 INFO L225 Difference]: With dead ends: 121 [2020-10-27 22:26:04,510 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 22:26:04,512 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 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 22:26:04,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 22:26:04,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-27 22:26:04,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 22:26:04,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 95 transitions. [2020-10-27 22:26:04,527 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 95 transitions. Word has length 15 [2020-10-27 22:26:04,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:04,527 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 95 transitions. [2020-10-27 22:26:04,527 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:04,528 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 95 transitions. [2020-10-27 22:26:04,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-10-27 22:26:04,529 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:04,529 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:26:04,529 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:26:04,529 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:04,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:04,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1903208065, now seen corresponding path program 1 times [2020-10-27 22:26:04,530 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:04,531 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1768951947] [2020-10-27 22:26:04,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:04,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:04,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:04,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:04,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:04,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:26:04,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:26:04,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-10-27 22:26:04,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:04,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:26:04,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-27 22:26:04,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:04,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:04,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:04,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:04,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:04,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:04,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:04,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:26:04,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:04,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:04,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:04,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:04,842 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:26:04,843 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1768951947] [2020-10-27 22:26:04,843 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:04,843 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:04,843 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1607056152] [2020-10-27 22:26:04,845 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:04,845 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:04,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:04,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:04,846 INFO L87 Difference]: Start difference. First operand 65 states and 95 transitions. Second operand 4 states. [2020-10-27 22:26:04,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:04,963 INFO L93 Difference]: Finished difference Result 115 states and 171 transitions. [2020-10-27 22:26:04,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:04,964 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-10-27 22:26:04,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:04,965 INFO L225 Difference]: With dead ends: 115 [2020-10-27 22:26:04,965 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 22:26:04,966 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 22:26:04,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 22:26:04,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-27 22:26:04,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-27 22:26:04,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 81 transitions. [2020-10-27 22:26:04,977 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 81 transitions. Word has length 20 [2020-10-27 22:26:04,977 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:04,977 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 81 transitions. [2020-10-27 22:26:04,977 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:04,977 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 81 transitions. [2020-10-27 22:26:04,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 22:26:04,979 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:04,979 INFO L422 BasicCegarLoop]: trace histogram [2, 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 22:26:04,979 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:26:04,979 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:04,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:04,980 INFO L82 PathProgramCache]: Analyzing trace with hash 323442577, now seen corresponding path program 1 times [2020-10-27 22:26:04,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:04,981 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1674752459] [2020-10-27 22:26:04,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:04,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:05,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:05,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 22:26:05,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:05,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 22:26:05,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:26:05,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 22:26:05,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:05,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:05,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:05,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:05,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:05,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:05,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:26:05,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:05,123 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:05,129 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:26:05,130 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1674752459] [2020-10-27 22:26:05,130 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:05,130 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:05,130 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907710860] [2020-10-27 22:26:05,131 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:05,131 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:05,132 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:05,132 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:05,132 INFO L87 Difference]: Start difference. First operand 57 states and 81 transitions. Second operand 4 states. [2020-10-27 22:26:05,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:05,371 INFO L93 Difference]: Finished difference Result 141 states and 212 transitions. [2020-10-27 22:26:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:05,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-10-27 22:26:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:05,374 INFO L225 Difference]: With dead ends: 141 [2020-10-27 22:26:05,374 INFO L226 Difference]: Without dead ends: 94 [2020-10-27 22:26:05,375 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:26:05,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-10-27 22:26:05,386 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 92. [2020-10-27 22:26:05,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-10-27 22:26:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 133 transitions. [2020-10-27 22:26:05,388 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 133 transitions. Word has length 25 [2020-10-27 22:26:05,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:05,389 INFO L481 AbstractCegarLoop]: Abstraction has 92 states and 133 transitions. [2020-10-27 22:26:05,389 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:05,389 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 133 transitions. [2020-10-27 22:26:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 22:26:05,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:05,391 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 22:26:05,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:26:05,391 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:05,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:05,392 INFO L82 PathProgramCache]: Analyzing trace with hash -1356324910, now seen corresponding path program 1 times [2020-10-27 22:26:05,392 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:05,392 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459495142] [2020-10-27 22:26:05,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:05,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:05,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:05,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:05,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:05,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 22:26:05,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:26:05,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 22:26:05,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:05,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:05,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 22:26:05,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:26:05,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:05,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:05,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:05,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:05,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:05,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:05,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:26:05,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:05,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:05,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:05,577 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:26:05,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459495142] [2020-10-27 22:26:05,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:05,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:05,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [918066480] [2020-10-27 22:26:05,584 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:05,585 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:05,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:05,588 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:05,588 INFO L87 Difference]: Start difference. First operand 92 states and 133 transitions. Second operand 4 states. [2020-10-27 22:26:05,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:05,799 INFO L93 Difference]: Finished difference Result 185 states and 270 transitions. [2020-10-27 22:26:05,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:05,800 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-10-27 22:26:05,800 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:05,803 INFO L225 Difference]: With dead ends: 185 [2020-10-27 22:26:05,803 INFO L226 Difference]: Without dead ends: 105 [2020-10-27 22:26:05,807 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 22:26:05,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-10-27 22:26:05,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2020-10-27 22:26:05,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 104 states. [2020-10-27 22:26:05,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 147 transitions. [2020-10-27 22:26:05,831 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 147 transitions. Word has length 26 [2020-10-27 22:26:05,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:05,832 INFO L481 AbstractCegarLoop]: Abstraction has 104 states and 147 transitions. [2020-10-27 22:26:05,832 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:05,835 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 147 transitions. [2020-10-27 22:26:05,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-10-27 22:26:05,837 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:05,837 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-27 22:26:05,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:26:05,837 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:05,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:05,838 INFO L82 PathProgramCache]: Analyzing trace with hash -951573711, now seen corresponding path program 1 times [2020-10-27 22:26:05,838 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:05,839 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [801889341] [2020-10-27 22:26:05,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:05,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:05,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:05,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:05,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-27 22:26:05,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:05,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 22:26:05,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:05,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 22:26:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-10-27 22:26:05,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:26:05,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:06,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:06,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:06,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:06,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:06,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:06,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:26:06,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:06,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:06,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:06,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:06,069 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:26:06,070 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [801889341] [2020-10-27 22:26:06,071 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:06,071 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 22:26:06,072 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871120824] [2020-10-27 22:26:06,072 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 22:26:06,073 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:06,073 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 22:26:06,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 22:26:06,074 INFO L87 Difference]: Start difference. First operand 104 states and 147 transitions. Second operand 4 states. [2020-10-27 22:26:06,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:06,246 INFO L93 Difference]: Finished difference Result 172 states and 245 transitions. [2020-10-27 22:26:06,247 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 22:26:06,247 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 37 [2020-10-27 22:26:06,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:06,248 INFO L225 Difference]: With dead ends: 172 [2020-10-27 22:26:06,248 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 22:26:06,249 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 22:26:06,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 22:26:06,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 80. [2020-10-27 22:26:06,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 22:26:06,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 109 transitions. [2020-10-27 22:26:06,258 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 109 transitions. Word has length 37 [2020-10-27 22:26:06,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:06,271 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 109 transitions. [2020-10-27 22:26:06,271 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 22:26:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 109 transitions. [2020-10-27 22:26:06,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-10-27 22:26:06,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:26:06,272 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-10-27 22:26:06,273 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:26:06,275 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:26:06,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:26:06,276 INFO L82 PathProgramCache]: Analyzing trace with hash 2067843122, now seen corresponding path program 1 times [2020-10-27 22:26:06,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:26:06,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932505161] [2020-10-27 22:26:06,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:26:06,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:06,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:06,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:26:06,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:06,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 22:26:06,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:26:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:26:06,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:26:06,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:26:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:26:06,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:26:06,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:26:06,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:26:06,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:26:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:26:06,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:26:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:26:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:26:06,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:26:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:26:06,524 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:26:06,525 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932505161] [2020-10-27 22:26:06,525 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:26:06,525 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 22:26:06,526 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [673772418] [2020-10-27 22:26:06,526 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 22:26:06,526 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:26:06,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 22:26:06,527 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:26:06,528 INFO L87 Difference]: Start difference. First operand 80 states and 109 transitions. Second operand 5 states. [2020-10-27 22:26:06,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:26:06,937 INFO L93 Difference]: Finished difference Result 83 states and 112 transitions. [2020-10-27 22:26:06,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 22:26:06,937 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2020-10-27 22:26:06,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:26:06,938 INFO L225 Difference]: With dead ends: 83 [2020-10-27 22:26:06,938 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 22:26:06,939 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:26:06,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 22:26:06,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 22:26:06,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 22:26:06,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 22:26:06,940 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2020-10-27 22:26:06,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:26:06,940 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 22:26:06,940 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 22:26:06,940 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 22:26:06,940 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 22:26:06,941 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:26:06,943 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 22:26:07,197 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 19 [2020-10-27 22:26:07,440 WARN L193 SmtUtils]: Spent 199.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 19 [2020-10-27 22:26:07,443 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 4) no Hoare annotation was computed. [2020-10-27 22:26:07,443 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 4) the Hoare annotation is: true [2020-10-27 22:26:07,443 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 4) no Hoare annotation was computed. [2020-10-27 22:26:07,444 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 4) no Hoare annotation was computed. [2020-10-27 22:26:07,444 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 22:26:07,451 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.offset| |old(#t~string5.offset)|) (= ~m_connect_1~0 |old(~m_connect_1~0)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= ~m_PipedOutputStream~0 |old(~m_PipedOutputStream~0)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= ~m_write~0 |old(~m_write~0)|) (= ~m_close~0 |old(~m_close~0)|) (= |old(#valid)| |#valid|) (= ~m_connect_2~0 |old(~m_connect_2~0)|) (= |#t~string5.base| |old(#t~string5.base)|) (= ~m_flush~0 |old(~m_flush~0)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|)) [2020-10-27 22:26:07,451 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 22:26:07,451 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 22:26:07,451 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 22:26:07,451 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 22:26:07,452 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 22:26:07,452 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 346) no Hoare annotation was computed. [2020-10-27 22:26:07,452 INFO L274 CegarLoopResult]: For program point L36(lines 36 51) no Hoare annotation was computed. [2020-10-27 22:26:07,452 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 15 346) no Hoare annotation was computed. [2020-10-27 22:26:07,452 INFO L274 CegarLoopResult]: For program point L38(lines 38 49) no Hoare annotation was computed. [2020-10-27 22:26:07,452 INFO L274 CegarLoopResult]: For program point L88(lines 88 103) no Hoare annotation was computed. [2020-10-27 22:26:07,452 INFO L274 CegarLoopResult]: For program point L55(lines 55 106) no Hoare annotation was computed. [2020-10-27 22:26:07,453 INFO L274 CegarLoopResult]: For program point L204(lines 204 219) no Hoare annotation was computed. [2020-10-27 22:26:07,453 INFO L274 CegarLoopResult]: For program point L72(lines 72 87) no Hoare annotation was computed. [2020-10-27 22:26:07,453 INFO L274 CegarLoopResult]: For program point L320(lines 320 335) no Hoare annotation was computed. [2020-10-27 22:26:07,453 INFO L274 CegarLoopResult]: For program point L188(lines 188 203) no Hoare annotation was computed. [2020-10-27 22:26:07,453 INFO L274 CegarLoopResult]: For program point L56(lines 56 71) no Hoare annotation was computed. [2020-10-27 22:26:07,453 INFO L270 CegarLoopResult]: At program point L337(lines 25 341) the Hoare annotation is: (let ((.cse0 (= main_~this_sink~0 0))) (or (and (= main_~q~0 0) .cse0) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0))) (and (<= 2 main_~q~0) .cse0 (<= main_~q~0 2)))) [2020-10-27 22:26:07,453 INFO L274 CegarLoopResult]: For program point L304(lines 304 319) no Hoare annotation was computed. [2020-10-27 22:26:07,453 INFO L274 CegarLoopResult]: For program point L172(lines 172 187) no Hoare annotation was computed. [2020-10-27 22:26:07,454 INFO L274 CegarLoopResult]: For program point L288(lines 288 303) no Hoare annotation was computed. [2020-10-27 22:26:07,454 INFO L274 CegarLoopResult]: For program point L156(lines 156 171) no Hoare annotation was computed. [2020-10-27 22:26:07,454 INFO L274 CegarLoopResult]: For program point L90(lines 90 101) no Hoare annotation was computed. [2020-10-27 22:26:07,458 INFO L274 CegarLoopResult]: For program point L272(lines 272 287) no Hoare annotation was computed. [2020-10-27 22:26:07,458 INFO L274 CegarLoopResult]: For program point L206(lines 206 217) no Hoare annotation was computed. [2020-10-27 22:26:07,458 INFO L274 CegarLoopResult]: For program point L140(lines 140 155) no Hoare annotation was computed. [2020-10-27 22:26:07,458 INFO L274 CegarLoopResult]: For program point L107(lines 107 222) no Hoare annotation was computed. [2020-10-27 22:26:07,459 INFO L274 CegarLoopResult]: For program point L74(lines 74 85) no Hoare annotation was computed. [2020-10-27 22:26:07,459 INFO L274 CegarLoopResult]: For program point L322(lines 322 333) no Hoare annotation was computed. [2020-10-27 22:26:07,459 INFO L274 CegarLoopResult]: For program point L256(lines 256 271) no Hoare annotation was computed. [2020-10-27 22:26:07,459 INFO L274 CegarLoopResult]: For program point L223(lines 223 338) no Hoare annotation was computed. [2020-10-27 22:26:07,459 INFO L274 CegarLoopResult]: For program point L190(lines 190 201) no Hoare annotation was computed. [2020-10-27 22:26:07,459 INFO L274 CegarLoopResult]: For program point L124(lines 124 139) no Hoare annotation was computed. [2020-10-27 22:26:07,459 INFO L274 CegarLoopResult]: For program point L58(lines 58 69) no Hoare annotation was computed. [2020-10-27 22:26:07,460 INFO L270 CegarLoopResult]: At program point L25-2(lines 25 341) the Hoare annotation is: (let ((.cse0 (= main_~this_sink~0 0))) (or (and (= main_~q~0 0) .cse0) (and (<= 3 main_~q~0) (or (<= (+ main_~this_sink~0 1) 0) (<= 1 main_~this_sink~0))) (and (<= 2 main_~q~0) .cse0 (<= main_~q~0 2)))) [2020-10-27 22:26:07,460 INFO L274 CegarLoopResult]: For program point L25-3(lines 25 341) no Hoare annotation was computed. [2020-10-27 22:26:07,460 INFO L274 CegarLoopResult]: For program point L306(lines 306 317) no Hoare annotation was computed. [2020-10-27 22:26:07,460 INFO L274 CegarLoopResult]: For program point L240(lines 240 255) no Hoare annotation was computed. [2020-10-27 22:26:07,460 INFO L274 CegarLoopResult]: For program point L174(lines 174 185) no Hoare annotation was computed. [2020-10-27 22:26:07,460 INFO L274 CegarLoopResult]: For program point L108(lines 108 123) no Hoare annotation was computed. [2020-10-27 22:26:07,460 INFO L274 CegarLoopResult]: For program point L42(lines 42 44) no Hoare annotation was computed. [2020-10-27 22:26:07,460 INFO L274 CegarLoopResult]: For program point L290(lines 290 301) no Hoare annotation was computed. [2020-10-27 22:26:07,461 INFO L274 CegarLoopResult]: For program point L224(lines 224 239) no Hoare annotation was computed. [2020-10-27 22:26:07,461 INFO L274 CegarLoopResult]: For program point L158(lines 158 169) no Hoare annotation was computed. [2020-10-27 22:26:07,461 INFO L274 CegarLoopResult]: For program point L274(lines 274 285) no Hoare annotation was computed. [2020-10-27 22:26:07,461 INFO L274 CegarLoopResult]: For program point L142(lines 142 153) no Hoare annotation was computed. [2020-10-27 22:26:07,463 INFO L274 CegarLoopResult]: For program point L258(lines 258 269) no Hoare annotation was computed. [2020-10-27 22:26:07,463 INFO L274 CegarLoopResult]: For program point L126(lines 126 137) no Hoare annotation was computed. [2020-10-27 22:26:07,463 INFO L274 CegarLoopResult]: For program point L242(lines 242 253) no Hoare annotation was computed. [2020-10-27 22:26:07,463 INFO L274 CegarLoopResult]: For program point L110(lines 110 121) no Hoare annotation was computed. [2020-10-27 22:26:07,464 INFO L274 CegarLoopResult]: For program point L226(lines 226 237) no Hoare annotation was computed. [2020-10-27 22:26:07,464 INFO L274 CegarLoopResult]: For program point L94(lines 94 96) no Hoare annotation was computed. [2020-10-27 22:26:07,464 INFO L274 CegarLoopResult]: For program point L210(lines 210 212) no Hoare annotation was computed. [2020-10-27 22:26:07,464 INFO L274 CegarLoopResult]: For program point L78(lines 78 80) no Hoare annotation was computed. [2020-10-27 22:26:07,464 INFO L274 CegarLoopResult]: For program point L326(lines 326 328) no Hoare annotation was computed. [2020-10-27 22:26:07,464 INFO L274 CegarLoopResult]: For program point L194(lines 194 196) no Hoare annotation was computed. [2020-10-27 22:26:07,464 INFO L274 CegarLoopResult]: For program point L62(lines 62 64) no Hoare annotation was computed. [2020-10-27 22:26:07,464 INFO L274 CegarLoopResult]: For program point L310(lines 310 312) no Hoare annotation was computed. [2020-10-27 22:26:07,464 INFO L274 CegarLoopResult]: For program point L178(lines 178 180) no Hoare annotation was computed. [2020-10-27 22:26:07,465 INFO L270 CegarLoopResult]: At program point L327(lines 15 346) the Hoare annotation is: false [2020-10-27 22:26:07,465 INFO L274 CegarLoopResult]: For program point L294(lines 294 296) no Hoare annotation was computed. [2020-10-27 22:26:07,465 INFO L274 CegarLoopResult]: For program point L162(lines 162 164) no Hoare annotation was computed. [2020-10-27 22:26:07,467 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 15 346) the Hoare annotation is: true [2020-10-27 22:26:07,468 INFO L274 CegarLoopResult]: For program point L278(lines 278 280) no Hoare annotation was computed. [2020-10-27 22:26:07,468 INFO L274 CegarLoopResult]: For program point L146(lines 146 148) no Hoare annotation was computed. [2020-10-27 22:26:07,468 INFO L274 CegarLoopResult]: For program point L262(lines 262 264) no Hoare annotation was computed. [2020-10-27 22:26:07,468 INFO L274 CegarLoopResult]: For program point L130(lines 130 132) no Hoare annotation was computed. [2020-10-27 22:26:07,468 INFO L274 CegarLoopResult]: For program point L345(line 345) no Hoare annotation was computed. [2020-10-27 22:26:07,468 INFO L274 CegarLoopResult]: For program point L246(lines 246 248) no Hoare annotation was computed. [2020-10-27 22:26:07,468 INFO L274 CegarLoopResult]: For program point L114(lines 114 116) no Hoare annotation was computed. [2020-10-27 22:26:07,468 INFO L274 CegarLoopResult]: For program point L230(lines 230 232) no Hoare annotation was computed. [2020-10-27 22:26:07,469 INFO L274 CegarLoopResult]: For program point L35(lines 35 54) no Hoare annotation was computed. [2020-10-27 22:26:07,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 10:26:07 BoogieIcfgContainer [2020-10-27 22:26:07,510 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 22:26:07,516 INFO L168 Benchmark]: Toolchain (without parser) took 6153.89 ms. Allocated memory was 158.3 MB in the beginning and 199.2 MB in the end (delta: 40.9 MB). Free memory was 113.2 MB in the beginning and 128.6 MB in the end (delta: -15.4 MB). Peak memory consumption was 92.3 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:07,516 INFO L168 Benchmark]: CDTParser took 1.57 ms. Allocated memory is still 158.3 MB. Free memory was 131.1 MB in the beginning and 130.9 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 22:26:07,518 INFO L168 Benchmark]: CACSL2BoogieTranslator took 434.68 ms. Allocated memory is still 158.3 MB. Free memory was 112.5 MB in the beginning and 139.9 MB in the end (delta: -27.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:07,518 INFO L168 Benchmark]: Boogie Preprocessor took 81.29 ms. Allocated memory is still 158.3 MB. Free memory was 139.9 MB in the beginning and 137.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:07,519 INFO L168 Benchmark]: RCFGBuilder took 847.46 ms. Allocated memory is still 158.3 MB. Free memory was 137.9 MB in the beginning and 109.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:07,523 INFO L168 Benchmark]: TraceAbstraction took 4776.75 ms. Allocated memory was 158.3 MB in the beginning and 199.2 MB in the end (delta: 40.9 MB). Free memory was 109.0 MB in the beginning and 128.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 87.6 MB. Max. memory is 8.0 GB. [2020-10-27 22:26:07,530 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.57 ms. Allocated memory is still 158.3 MB. Free memory was 131.1 MB in the beginning and 130.9 MB in the end (delta: 102.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 434.68 ms. Allocated memory is still 158.3 MB. Free memory was 112.5 MB in the beginning and 139.9 MB in the end (delta: -27.4 MB). Peak memory consumption was 16.8 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 81.29 ms. Allocated memory is still 158.3 MB. Free memory was 139.9 MB in the beginning and 137.9 MB in the end (delta: 2.0 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 847.46 ms. Allocated memory is still 158.3 MB. Free memory was 137.9 MB in the beginning and 109.6 MB in the end (delta: 28.3 MB). Peak memory consumption was 28.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4776.75 ms. Allocated memory was 158.3 MB in the beginning and 199.2 MB in the end (delta: 40.9 MB). Free memory was 109.0 MB in the beginning and 128.6 MB in the end (delta: -19.6 MB). Peak memory consumption was 87.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 4]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((q == 0 && this_sink == 0) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink))) || ((2 <= q && this_sink == 0) && q <= 2) - InvariantResult [Line: 15]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 25]: Loop Invariant Derived loop invariant: ((q == 0 && this_sink == 0) || (3 <= q && (this_sink + 1 <= 0 || 1 <= this_sink))) || ((2 <= q && this_sink == 0) && q <= 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 77 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 4.1s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.5s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 548 SDtfs, 781 SDslu, 48 SDs, 0 SdLazy, 371 SolverSat, 56 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 48 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=104occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 22 NumberOfFragments, 116 HoareAnnotationTreeSize, 14 FomulaSimplifications, 140 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 348 FormulaSimplificationTreeSizeReductionInter, 0.4s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 175 NumberOfCodeBlocks, 175 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 168 ConstructedInterpolants, 0 QuantifiedInterpolants, 17768 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 PerfectInterpolantSequences, 27/27 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...