/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/eca-rers2012/Problem16_label07.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-30 23:35:02,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-30 23:35:02,794 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-30 23:35:02,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-30 23:35:02,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-30 23:35:02,819 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-30 23:35:02,820 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-30 23:35:02,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-30 23:35:02,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-30 23:35:02,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-30 23:35:02,824 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-30 23:35:02,825 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-30 23:35:02,825 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-30 23:35:02,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-30 23:35:02,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-30 23:35:02,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-30 23:35:02,828 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-30 23:35:02,829 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-30 23:35:02,830 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-30 23:35:02,831 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-30 23:35:02,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-30 23:35:02,833 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-30 23:35:02,834 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-30 23:35:02,835 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-30 23:35:02,837 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-30 23:35:02,838 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-30 23:35:02,838 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-30 23:35:02,838 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-30 23:35:02,839 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-30 23:35:02,840 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-30 23:35:02,840 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-30 23:35:02,840 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-30 23:35:02,841 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-30 23:35:02,842 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-30 23:35:02,842 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-30 23:35:02,843 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-30 23:35:02,843 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-30 23:35:02,843 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-30 23:35:02,844 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-30 23:35:02,844 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-30 23:35:02,845 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-30 23:35:02,846 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-30 23:35:02,864 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-30 23:35:02,864 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-30 23:35:02,864 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-30 23:35:02,865 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-30 23:35:02,865 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-30 23:35:02,866 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-30 23:35:02,866 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-30 23:35:02,866 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-30 23:35:02,866 INFO L138 SettingsManager]: * Use SBE=true [2023-03-30 23:35:02,867 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-30 23:35:02,867 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-30 23:35:02,867 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-30 23:35:02,867 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-30 23:35:02,867 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-30 23:35:02,868 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-30 23:35:02,868 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-30 23:35:02,868 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-30 23:35:02,868 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-30 23:35:02,868 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-30 23:35:02,869 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-30 23:35:02,869 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-30 23:35:02,869 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-30 23:35:02,869 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-30 23:35:02,869 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-30 23:35:02,870 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:35:02,870 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-30 23:35:02,870 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-30 23:35:02,870 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-30 23:35:02,870 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-30 23:35:02,871 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-30 23:35:02,871 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-30 23:35:02,871 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-30 23:35:02,871 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-30 23:35:02,871 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-30 23:35:02,872 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-30 23:35:02,872 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-30 23:35:03,094 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-30 23:35:03,119 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-30 23:35:03,121 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-30 23:35:03,122 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-30 23:35:03,123 INFO L275 PluginConnector]: CDTParser initialized [2023-03-30 23:35:03,124 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem16_label07.c [2023-03-30 23:35:04,310 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-30 23:35:04,638 INFO L351 CDTParser]: Found 1 translation units. [2023-03-30 23:35:04,638 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label07.c [2023-03-30 23:35:04,658 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9aaab9bc/e7724f89716e4103a1bfa87b832d8fb7/FLAG2f63932fb [2023-03-30 23:35:04,678 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e9aaab9bc/e7724f89716e4103a1bfa87b832d8fb7 [2023-03-30 23:35:04,680 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-30 23:35:04,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-30 23:35:04,682 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-30 23:35:04,682 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-30 23:35:04,687 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-30 23:35:04,688 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:35:04" (1/1) ... [2023-03-30 23:35:04,690 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3deab81d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:04, skipping insertion in model container [2023-03-30 23:35:04,690 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.03 11:35:04" (1/1) ... [2023-03-30 23:35:04,696 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-30 23:35:04,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-30 23:35:04,905 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label07.c[5709,5722] [2023-03-30 23:35:05,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:35:05,275 INFO L203 MainTranslator]: Completed pre-run [2023-03-30 23:35:05,308 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem16_label07.c[5709,5722] [2023-03-30 23:35:05,527 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-30 23:35:05,543 INFO L208 MainTranslator]: Completed translation [2023-03-30 23:35:05,544 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05 WrapperNode [2023-03-30 23:35:05,544 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-30 23:35:05,545 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-30 23:35:05,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-30 23:35:05,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-30 23:35:05,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (1/1) ... [2023-03-30 23:35:05,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (1/1) ... [2023-03-30 23:35:05,596 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (1/1) ... [2023-03-30 23:35:05,597 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (1/1) ... [2023-03-30 23:35:05,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (1/1) ... [2023-03-30 23:35:05,677 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (1/1) ... [2023-03-30 23:35:05,699 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (1/1) ... [2023-03-30 23:35:05,712 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (1/1) ... [2023-03-30 23:35:05,726 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-30 23:35:05,727 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-30 23:35:05,727 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-30 23:35:05,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-30 23:35:05,728 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (1/1) ... [2023-03-30 23:35:05,734 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-30 23:35:05,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:05,762 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-30 23:35:05,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-30 23:35:05,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-30 23:35:05,800 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-30 23:35:05,802 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-30 23:35:05,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2023-03-30 23:35:05,802 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2023-03-30 23:35:05,802 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-30 23:35:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2023-03-30 23:35:05,802 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-30 23:35:05,803 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-30 23:35:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-30 23:35:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-30 23:35:05,804 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-30 23:35:05,869 INFO L236 CfgBuilder]: Building ICFG [2023-03-30 23:35:05,870 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-30 23:35:07,609 INFO L277 CfgBuilder]: Performing block encoding [2023-03-30 23:35:07,630 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-30 23:35:07,630 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-03-30 23:35:07,635 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:35:07 BoogieIcfgContainer [2023-03-30 23:35:07,635 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-30 23:35:07,638 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-30 23:35:07,638 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-30 23:35:07,641 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-30 23:35:07,641 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.03 11:35:04" (1/3) ... [2023-03-30 23:35:07,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4661a9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:35:07, skipping insertion in model container [2023-03-30 23:35:07,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.03 11:35:05" (2/3) ... [2023-03-30 23:35:07,642 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4661a9fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.03 11:35:07, skipping insertion in model container [2023-03-30 23:35:07,642 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.03 11:35:07" (3/3) ... [2023-03-30 23:35:07,645 INFO L112 eAbstractionObserver]: Analyzing ICFG Problem16_label07.c [2023-03-30 23:35:07,661 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-30 23:35:07,661 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-30 23:35:07,728 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-30 23:35:07,734 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@7df95b52, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-30 23:35:07,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-30 23:35:07,742 INFO L276 IsEmpty]: Start isEmpty. Operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2023-03-30 23:35:07,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-03-30 23:35:07,751 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:07,751 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:07,752 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:07,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:07,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1759725031, now seen corresponding path program 1 times [2023-03-30 23:35:07,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:07,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235225157] [2023-03-30 23:35:07,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:07,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:07,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:08,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:08,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:08,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:08,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:08,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235225157] [2023-03-30 23:35:08,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235225157] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:08,349 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:35:08,349 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-03-30 23:35:08,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1896276883] [2023-03-30 23:35:08,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:08,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-30 23:35:08,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:08,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-30 23:35:08,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-30 23:35:08,395 INFO L87 Difference]: Start difference. First operand has 409 states, 399 states have (on average 1.8245614035087718) internal successors, (728), 400 states have internal predecessors, (728), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:35:10,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:10,817 INFO L93 Difference]: Finished difference Result 1184 states and 2180 transitions. [2023-03-30 23:35:10,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-30 23:35:10,820 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 60 [2023-03-30 23:35:10,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:10,836 INFO L225 Difference]: With dead ends: 1184 [2023-03-30 23:35:10,836 INFO L226 Difference]: Without dead ends: 696 [2023-03-30 23:35:10,845 INFO L412 NwaCegarLoop]: 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 [2023-03-30 23:35:10,849 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1120 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 1537 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1120 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 1706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 1537 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:10,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1120 Valid, 32 Invalid, 1706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 1537 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2023-03-30 23:35:10,866 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 696 states. [2023-03-30 23:35:10,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 696 to 689. [2023-03-30 23:35:10,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 689 states, 674 states have (on average 1.7492581602373887) internal successors, (1179), 676 states have internal predecessors, (1179), 6 states have call successors, (6), 6 states have call predecessors, (6), 8 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2023-03-30 23:35:10,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1197 transitions. [2023-03-30 23:35:10,949 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1197 transitions. Word has length 60 [2023-03-30 23:35:10,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:10,950 INFO L495 AbstractCegarLoop]: Abstraction has 689 states and 1197 transitions. [2023-03-30 23:35:10,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 18.666666666666668) internal successors, (56), 2 states have internal predecessors, (56), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-30 23:35:10,950 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1197 transitions. [2023-03-30 23:35:10,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-03-30 23:35:10,962 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:10,963 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:10,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-30 23:35:10,963 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:10,964 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:10,964 INFO L85 PathProgramCache]: Analyzing trace with hash 218186759, now seen corresponding path program 1 times [2023-03-30 23:35:10,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:10,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792109983] [2023-03-30 23:35:10,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:10,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:11,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:11,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:11,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:11,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:11,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:11,325 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:11,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:11,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792109983] [2023-03-30 23:35:11,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792109983] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:11,326 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:35:11,326 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:35:11,326 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32665436] [2023-03-30 23:35:11,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:11,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:35:11,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:11,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:35:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:35:11,329 INFO L87 Difference]: Start difference. First operand 689 states and 1197 transitions. Second operand has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:35:13,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:13,787 INFO L93 Difference]: Finished difference Result 2091 states and 3681 transitions. [2023-03-30 23:35:13,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:35:13,788 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 129 [2023-03-30 23:35:13,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:13,799 INFO L225 Difference]: With dead ends: 2091 [2023-03-30 23:35:13,799 INFO L226 Difference]: Without dead ends: 1408 [2023-03-30 23:35:13,801 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2023-03-30 23:35:13,802 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 1813 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 2266 mSolverCounterSat, 497 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1813 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 2763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 497 IncrementalHoareTripleChecker+Valid, 2266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:13,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1813 Valid, 65 Invalid, 2763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [497 Valid, 2266 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-30 23:35:13,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1408 states. [2023-03-30 23:35:13,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1408 to 1384. [2023-03-30 23:35:13,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1352 states have (on average 1.6494082840236686) internal successors, (2230), 1360 states have internal predecessors, (2230), 10 states have call successors, (10), 10 states have call predecessors, (10), 21 states have return successors, (48), 13 states have call predecessors, (48), 9 states have call successors, (48) [2023-03-30 23:35:13,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2288 transitions. [2023-03-30 23:35:13,896 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2288 transitions. Word has length 129 [2023-03-30 23:35:13,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:13,896 INFO L495 AbstractCegarLoop]: Abstraction has 1384 states and 2288 transitions. [2023-03-30 23:35:13,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 17.571428571428573) internal successors, (123), 5 states have internal predecessors, (123), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:35:13,903 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2288 transitions. [2023-03-30 23:35:13,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2023-03-30 23:35:13,913 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:13,913 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:13,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-30 23:35:13,914 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:13,915 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:13,915 INFO L85 PathProgramCache]: Analyzing trace with hash 254464352, now seen corresponding path program 1 times [2023-03-30 23:35:13,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:13,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845200815] [2023-03-30 23:35:13,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:13,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:14,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:14,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:14,206 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:14,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:14,207 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845200815] [2023-03-30 23:35:14,207 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845200815] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:14,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:35:14,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-30 23:35:14,209 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558989704] [2023-03-30 23:35:14,209 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:14,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-30 23:35:14,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:14,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-30 23:35:14,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:35:14,212 INFO L87 Difference]: Start difference. First operand 1384 states and 2288 transitions. Second operand has 7 states, 6 states have (on average 21.0) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:35:16,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:16,430 INFO L93 Difference]: Finished difference Result 3489 states and 5782 transitions. [2023-03-30 23:35:16,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-03-30 23:35:16,431 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 21.0) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 132 [2023-03-30 23:35:16,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:16,443 INFO L225 Difference]: With dead ends: 3489 [2023-03-30 23:35:16,443 INFO L226 Difference]: Without dead ends: 2111 [2023-03-30 23:35:16,450 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:35:16,453 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1338 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1338 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 2606 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:16,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1338 Valid, 62 Invalid, 2606 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [477 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-03-30 23:35:16,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2111 states. [2023-03-30 23:35:16,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2111 to 2087. [2023-03-30 23:35:16,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2087 states, 2035 states have (on average 1.3493857493857493) internal successors, (2746), 2050 states have internal predecessors, (2746), 14 states have call successors, (14), 14 states have call predecessors, (14), 37 states have return successors, (88), 22 states have call predecessors, (88), 13 states have call successors, (88) [2023-03-30 23:35:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2848 transitions. [2023-03-30 23:35:16,528 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2848 transitions. Word has length 132 [2023-03-30 23:35:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:16,528 INFO L495 AbstractCegarLoop]: Abstraction has 2087 states and 2848 transitions. [2023-03-30 23:35:16,529 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 21.0) internal successors, (126), 4 states have internal predecessors, (126), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:35:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2848 transitions. [2023-03-30 23:35:16,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2023-03-30 23:35:16,530 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:16,531 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:16,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-30 23:35:16,531 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:16,531 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:16,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1868908008, now seen corresponding path program 1 times [2023-03-30 23:35:16,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:16,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631782013] [2023-03-30 23:35:16,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:16,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:16,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:16,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:16,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:16,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:16,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:16,801 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:16,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:16,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631782013] [2023-03-30 23:35:16,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1631782013] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:16,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-30 23:35:16,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-30 23:35:16,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930409365] [2023-03-30 23:35:16,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:16,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-03-30 23:35:16,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:16,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-03-30 23:35:16,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-03-30 23:35:16,804 INFO L87 Difference]: Start difference. First operand 2087 states and 2848 transitions. Second operand has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:35:20,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:20,663 INFO L93 Difference]: Finished difference Result 8341 states and 11788 transitions. [2023-03-30 23:35:20,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-03-30 23:35:20,664 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 136 [2023-03-30 23:35:20,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:20,690 INFO L225 Difference]: With dead ends: 8341 [2023-03-30 23:35:20,690 INFO L226 Difference]: Without dead ends: 6260 [2023-03-30 23:35:20,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2023-03-30 23:35:20,704 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 1428 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 4464 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1428 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 4985 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 4464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:20,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1428 Valid, 67 Invalid, 4985 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 4464 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-03-30 23:35:20,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6260 states. [2023-03-30 23:35:20,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6260 to 6248. [2023-03-30 23:35:20,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6248 states, 6095 states have (on average 1.2554552912223134) internal successors, (7652), 6152 states have internal predecessors, (7652), 38 states have call successors, (38), 38 states have call predecessors, (38), 114 states have return successors, (524), 57 states have call predecessors, (524), 37 states have call successors, (524) [2023-03-30 23:35:20,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6248 states to 6248 states and 8214 transitions. [2023-03-30 23:35:20,860 INFO L78 Accepts]: Start accepts. Automaton has 6248 states and 8214 transitions. Word has length 136 [2023-03-30 23:35:20,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:20,861 INFO L495 AbstractCegarLoop]: Abstraction has 6248 states and 8214 transitions. [2023-03-30 23:35:20,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 18.571428571428573) internal successors, (130), 5 states have internal predecessors, (130), 3 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-30 23:35:20,861 INFO L276 IsEmpty]: Start isEmpty. Operand 6248 states and 8214 transitions. [2023-03-30 23:35:20,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2023-03-30 23:35:20,863 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:20,863 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:20,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-30 23:35:20,864 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:20,864 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:20,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1023308184, now seen corresponding path program 1 times [2023-03-30 23:35:20,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:20,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [830660978] [2023-03-30 23:35:20,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:20,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:20,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:21,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:21,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:21,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:21,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:21,211 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 49 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-03-30 23:35:21,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [830660978] [2023-03-30 23:35:21,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [830660978] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:21,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42390561] [2023-03-30 23:35:21,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:21,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:21,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:21,217 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:35:21,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-03-30 23:35:21,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:21,331 INFO L262 TraceCheckSpWp]: Trace formula consists of 331 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:21,340 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:21,511 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-30 23:35:21,511 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:35:21,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42390561] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:21,511 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:35:21,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 7 [2023-03-30 23:35:21,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190463451] [2023-03-30 23:35:21,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:21,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:35:21,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:21,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:35:21,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:35:21,513 INFO L87 Difference]: Start difference. First operand 6248 states and 8214 transitions. Second operand has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:35:22,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:22,723 INFO L93 Difference]: Finished difference Result 7935 states and 10184 transitions. [2023-03-30 23:35:22,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:35:22,724 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 160 [2023-03-30 23:35:22,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:22,756 INFO L225 Difference]: With dead ends: 7935 [2023-03-30 23:35:22,756 INFO L226 Difference]: Without dead ends: 7933 [2023-03-30 23:35:22,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-03-30 23:35:22,762 INFO L413 NwaCegarLoop]: 170 mSDtfsCounter, 309 mSDsluCounter, 14 mSDsCounter, 0 mSdLazyCounter, 994 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 1026 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:22,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 184 Invalid, 1026 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 994 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-30 23:35:22,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7933 states. [2023-03-30 23:35:22,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7933 to 6585. [2023-03-30 23:35:22,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6585 states, 6428 states have (on average 1.2504667081518357) internal successors, (8038), 6485 states have internal predecessors, (8038), 40 states have call successors, (40), 40 states have call predecessors, (40), 116 states have return successors, (544), 59 states have call predecessors, (544), 39 states have call successors, (544) [2023-03-30 23:35:22,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6585 states to 6585 states and 8622 transitions. [2023-03-30 23:35:22,974 INFO L78 Accepts]: Start accepts. Automaton has 6585 states and 8622 transitions. Word has length 160 [2023-03-30 23:35:22,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:22,976 INFO L495 AbstractCegarLoop]: Abstraction has 6585 states and 8622 transitions. [2023-03-30 23:35:22,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 51.333333333333336) internal successors, (154), 3 states have internal predecessors, (154), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-03-30 23:35:22,976 INFO L276 IsEmpty]: Start isEmpty. Operand 6585 states and 8622 transitions. [2023-03-30 23:35:22,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 405 [2023-03-30 23:35:22,985 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:22,985 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-03-30 23:35:22,997 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-03-30 23:35:23,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:23,191 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:23,191 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:23,192 INFO L85 PathProgramCache]: Analyzing trace with hash -1757939612, now seen corresponding path program 1 times [2023-03-30 23:35:23,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:23,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1428786923] [2023-03-30 23:35:23,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:23,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:23,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:24,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-03-30 23:35:24,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2023-03-30 23:35:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,511 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 260 proven. 114 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2023-03-30 23:35:24,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:24,511 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1428786923] [2023-03-30 23:35:24,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1428786923] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:24,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1135183] [2023-03-30 23:35:24,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:24,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:24,512 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:24,513 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:35:24,523 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-03-30 23:35:24,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:24,674 INFO L262 TraceCheckSpWp]: Trace formula consists of 653 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:24,695 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:24,895 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-03-30 23:35:24,896 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:35:25,299 INFO L134 CoverageAnalysis]: Checked inductivity of 474 backedges. 375 proven. 2 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2023-03-30 23:35:25,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1135183] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:35:25,300 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:35:25,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 14 [2023-03-30 23:35:25,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887092397] [2023-03-30 23:35:25,300 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:35:25,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-03-30 23:35:25,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:25,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-03-30 23:35:25,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2023-03-30 23:35:25,303 INFO L87 Difference]: Start difference. First operand 6585 states and 8622 transitions. Second operand has 14 states, 14 states have (on average 39.214285714285715) internal successors, (549), 12 states have internal predecessors, (549), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-03-30 23:35:32,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:32,628 INFO L93 Difference]: Finished difference Result 17998 states and 24041 transitions. [2023-03-30 23:35:32,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2023-03-30 23:35:32,629 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 39.214285714285715) internal successors, (549), 12 states have internal predecessors, (549), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) Word has length 404 [2023-03-30 23:35:32,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:32,676 INFO L225 Difference]: With dead ends: 17998 [2023-03-30 23:35:32,676 INFO L226 Difference]: Without dead ends: 11419 [2023-03-30 23:35:32,689 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 899 GetRequests, 847 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 829 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=623, Invalid=2133, Unknown=0, NotChecked=0, Total=2756 [2023-03-30 23:35:32,689 INFO L413 NwaCegarLoop]: 24 mSDtfsCounter, 7791 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 6086 mSolverCounterSat, 4062 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7807 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 10148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4062 IncrementalHoareTripleChecker+Valid, 6086 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:32,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7807 Valid, 121 Invalid, 10148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4062 Valid, 6086 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2023-03-30 23:35:32,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11419 states. [2023-03-30 23:35:32,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11419 to 10379. [2023-03-30 23:35:32,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 10137 states have (on average 1.2262996941896025) internal successors, (12431), 10230 states have internal predecessors, (12431), 62 states have call successors, (62), 62 states have call predecessors, (62), 179 states have return successors, (1065), 86 states have call predecessors, (1065), 61 states have call successors, (1065) [2023-03-30 23:35:32,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 13558 transitions. [2023-03-30 23:35:32,955 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 13558 transitions. Word has length 404 [2023-03-30 23:35:32,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:32,957 INFO L495 AbstractCegarLoop]: Abstraction has 10379 states and 13558 transitions. [2023-03-30 23:35:32,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 39.214285714285715) internal successors, (549), 12 states have internal predecessors, (549), 6 states have call successors, (11), 7 states have call predecessors, (11), 7 states have return successors, (10), 6 states have call predecessors, (10), 6 states have call successors, (10) [2023-03-30 23:35:32,958 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 13558 transitions. [2023-03-30 23:35:32,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 495 [2023-03-30 23:35:32,971 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:32,971 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:35:32,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-03-30 23:35:33,180 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-03-30 23:35:33,181 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:33,181 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:33,181 INFO L85 PathProgramCache]: Analyzing trace with hash 1940134074, now seen corresponding path program 1 times [2023-03-30 23:35:33,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:33,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1610179128] [2023-03-30 23:35:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:33,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:33,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:33,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:33,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:35:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-03-30 23:35:33,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,719 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 162 proven. 3 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-03-30 23:35:33,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1610179128] [2023-03-30 23:35:33,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1610179128] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:33,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [235957111] [2023-03-30 23:35:33,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:33,723 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:33,723 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:33,725 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:35:33,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-03-30 23:35:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:33,918 INFO L262 TraceCheckSpWp]: Trace formula consists of 742 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:33,925 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:34,000 INFO L134 CoverageAnalysis]: Checked inductivity of 414 backedges. 165 proven. 0 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-03-30 23:35:34,000 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-03-30 23:35:34,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [235957111] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-30 23:35:34,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-03-30 23:35:34,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2023-03-30 23:35:34,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76628051] [2023-03-30 23:35:34,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-30 23:35:34,002 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-03-30 23:35:34,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:34,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-03-30 23:35:34,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:35:34,003 INFO L87 Difference]: Start difference. First operand 10379 states and 13558 transitions. Second operand has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:35:35,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:35,135 INFO L93 Difference]: Finished difference Result 20752 states and 27110 transitions. [2023-03-30 23:35:35,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-03-30 23:35:35,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 494 [2023-03-30 23:35:35,137 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:35,167 INFO L225 Difference]: With dead ends: 20752 [2023-03-30 23:35:35,167 INFO L226 Difference]: Without dead ends: 10379 [2023-03-30 23:35:35,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 506 GetRequests, 502 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-30 23:35:35,190 INFO L413 NwaCegarLoop]: 479 mSDtfsCounter, 317 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 1020 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 1078 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1020 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:35,190 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 499 Invalid, 1078 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1020 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-30 23:35:35,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10379 states. [2023-03-30 23:35:35,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10379 to 10379. [2023-03-30 23:35:35,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10379 states, 10137 states have (on average 1.1918713623359969) internal successors, (12082), 10230 states have internal predecessors, (12082), 62 states have call successors, (62), 62 states have call predecessors, (62), 179 states have return successors, (905), 86 states have call predecessors, (905), 61 states have call successors, (905) [2023-03-30 23:35:35,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10379 states to 10379 states and 13049 transitions. [2023-03-30 23:35:35,403 INFO L78 Accepts]: Start accepts. Automaton has 10379 states and 13049 transitions. Word has length 494 [2023-03-30 23:35:35,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:35,405 INFO L495 AbstractCegarLoop]: Abstraction has 10379 states and 13049 transitions. [2023-03-30 23:35:35,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.33333333333333) internal successors, (307), 3 states have internal predecessors, (307), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-03-30 23:35:35,406 INFO L276 IsEmpty]: Start isEmpty. Operand 10379 states and 13049 transitions. [2023-03-30 23:35:35,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2023-03-30 23:35:35,426 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:35,427 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2023-03-30 23:35:35,439 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-03-30 23:35:35,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:35,634 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:35,634 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:35,635 INFO L85 PathProgramCache]: Analyzing trace with hash 1786675418, now seen corresponding path program 1 times [2023-03-30 23:35:35,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:35,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907481472] [2023-03-30 23:35:35,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:35,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:35,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:36,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:36,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:36,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:36,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:36,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:35:36,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:36,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-03-30 23:35:36,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:36,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2023-03-30 23:35:36,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:36,268 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 497 proven. 2 refuted. 0 times theorem prover too weak. 252 trivial. 0 not checked. [2023-03-30 23:35:36,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:36,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907481472] [2023-03-30 23:35:36,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907481472] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:36,268 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826732926] [2023-03-30 23:35:36,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:36,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:36,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:36,270 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:35:36,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-03-30 23:35:36,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:36,464 INFO L262 TraceCheckSpWp]: Trace formula consists of 890 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:36,472 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:36,642 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-03-30 23:35:36,642 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:35:36,948 INFO L134 CoverageAnalysis]: Checked inductivity of 751 backedges. 500 proven. 2 refuted. 0 times theorem prover too weak. 249 trivial. 0 not checked. [2023-03-30 23:35:36,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826732926] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:35:36,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:35:36,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 12 [2023-03-30 23:35:36,949 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1041950040] [2023-03-30 23:35:36,949 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:35:36,951 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:35:36,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:36,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:35:36,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:35:36,952 INFO L87 Difference]: Start difference. First operand 10379 states and 13049 transitions. Second operand has 12 states, 12 states have (on average 52.25) internal successors, (627), 10 states have internal predecessors, (627), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:35:40,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:40,758 INFO L93 Difference]: Finished difference Result 31643 states and 39820 transitions. [2023-03-30 23:35:40,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2023-03-30 23:35:40,758 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 52.25) internal successors, (627), 10 states have internal predecessors, (627), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 601 [2023-03-30 23:35:40,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:40,810 INFO L225 Difference]: With dead ends: 31643 [2023-03-30 23:35:40,810 INFO L226 Difference]: Without dead ends: 16756 [2023-03-30 23:35:40,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1242 GetRequests, 1217 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=172, Invalid=478, Unknown=0, NotChecked=0, Total=650 [2023-03-30 23:35:40,842 INFO L413 NwaCegarLoop]: 29 mSDtfsCounter, 2863 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 4544 mSolverCounterSat, 1164 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2871 SdHoareTripleChecker+Valid, 133 SdHoareTripleChecker+Invalid, 5708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1164 IncrementalHoareTripleChecker+Valid, 4544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:40,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2871 Valid, 133 Invalid, 5708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1164 Valid, 4544 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-03-30 23:35:40,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16756 states. [2023-03-30 23:35:41,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16756 to 13005. [2023-03-30 23:35:41,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13005 states, 12759 states have (on average 1.0521984481542441) internal successors, (13425), 12838 states have internal predecessors, (13425), 78 states have call successors, (78), 78 states have call predecessors, (78), 167 states have return successors, (694), 88 states have call predecessors, (694), 77 states have call successors, (694) [2023-03-30 23:35:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13005 states to 13005 states and 14197 transitions. [2023-03-30 23:35:41,200 INFO L78 Accepts]: Start accepts. Automaton has 13005 states and 14197 transitions. Word has length 601 [2023-03-30 23:35:41,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:41,201 INFO L495 AbstractCegarLoop]: Abstraction has 13005 states and 14197 transitions. [2023-03-30 23:35:41,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 52.25) internal successors, (627), 10 states have internal predecessors, (627), 5 states have call successors, (9), 6 states have call predecessors, (9), 6 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:35:41,201 INFO L276 IsEmpty]: Start isEmpty. Operand 13005 states and 14197 transitions. [2023-03-30 23:35:41,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1069 [2023-03-30 23:35:41,249 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:41,250 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2023-03-30 23:35:41,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-03-30 23:35:41,456 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:41,457 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:41,457 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:41,457 INFO L85 PathProgramCache]: Analyzing trace with hash 1475841544, now seen corresponding path program 1 times [2023-03-30 23:35:41,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:41,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364199571] [2023-03-30 23:35:41,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:41,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:41,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:42,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:35:42,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 327 [2023-03-30 23:35:42,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 442 [2023-03-30 23:35:42,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 584 [2023-03-30 23:35:42,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 694 [2023-03-30 23:35:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 909 [2023-03-30 23:35:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,451 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 735 proven. 352 refuted. 0 times theorem prover too weak. 1523 trivial. 0 not checked. [2023-03-30 23:35:42,451 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:42,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364199571] [2023-03-30 23:35:42,452 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [364199571] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:42,452 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1331339946] [2023-03-30 23:35:42,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:42,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:42,453 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:42,454 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:35:42,479 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-03-30 23:35:42,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:42,795 INFO L262 TraceCheckSpWp]: Trace formula consists of 1464 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:42,806 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 1873 proven. 2 refuted. 0 times theorem prover too weak. 735 trivial. 0 not checked. [2023-03-30 23:35:42,992 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:35:43,416 INFO L134 CoverageAnalysis]: Checked inductivity of 2610 backedges. 738 proven. 355 refuted. 0 times theorem prover too weak. 1517 trivial. 0 not checked. [2023-03-30 23:35:43,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1331339946] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:35:43,417 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:35:43,417 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 5] total 11 [2023-03-30 23:35:43,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098082748] [2023-03-30 23:35:43,418 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:35:43,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-03-30 23:35:43,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:43,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-03-30 23:35:43,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2023-03-30 23:35:43,421 INFO L87 Difference]: Start difference. First operand 13005 states and 14197 transitions. Second operand has 11 states, 11 states have (on average 81.18181818181819) internal successors, (893), 9 states have internal predecessors, (893), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:35:46,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:46,537 INFO L93 Difference]: Finished difference Result 26537 states and 29646 transitions. [2023-03-30 23:35:46,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-03-30 23:35:46,538 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 81.18181818181819) internal successors, (893), 9 states have internal predecessors, (893), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 1068 [2023-03-30 23:35:46,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:46,587 INFO L225 Difference]: With dead ends: 26537 [2023-03-30 23:35:46,588 INFO L226 Difference]: Without dead ends: 13538 [2023-03-30 23:35:46,616 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2184 GetRequests, 2159 SyntacticMatches, 2 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=162, Invalid=438, Unknown=0, NotChecked=0, Total=600 [2023-03-30 23:35:46,618 INFO L413 NwaCegarLoop]: 30 mSDtfsCounter, 1950 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 5029 mSolverCounterSat, 272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1955 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 5301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 272 IncrementalHoareTripleChecker+Valid, 5029 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:46,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1955 Valid, 152 Invalid, 5301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [272 Valid, 5029 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-30 23:35:46,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13538 states. [2023-03-30 23:35:46,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13538 to 11328. [2023-03-30 23:35:46,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11328 states, 11099 states have (on average 1.0377511487521398) internal successors, (11518), 11180 states have internal predecessors, (11518), 69 states have call successors, (69), 68 states have call predecessors, (69), 159 states have return successors, (471), 79 states have call predecessors, (471), 68 states have call successors, (471) [2023-03-30 23:35:46,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11328 states to 11328 states and 12058 transitions. [2023-03-30 23:35:46,868 INFO L78 Accepts]: Start accepts. Automaton has 11328 states and 12058 transitions. Word has length 1068 [2023-03-30 23:35:46,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:46,869 INFO L495 AbstractCegarLoop]: Abstraction has 11328 states and 12058 transitions. [2023-03-30 23:35:46,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.18181818181819) internal successors, (893), 9 states have internal predecessors, (893), 4 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:35:46,869 INFO L276 IsEmpty]: Start isEmpty. Operand 11328 states and 12058 transitions. [2023-03-30 23:35:46,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1097 [2023-03-30 23:35:46,897 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:46,897 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:46,904 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-03-30 23:35:47,105 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:47,109 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:47,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:47,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1248469754, now seen corresponding path program 1 times [2023-03-30 23:35:47,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:47,110 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1407876523] [2023-03-30 23:35:47,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:47,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:47,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:48,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-30 23:35:48,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:48,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-03-30 23:35:48,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:48,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 257 [2023-03-30 23:35:48,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 326 [2023-03-30 23:35:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:48,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2023-03-30 23:35:48,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:48,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 612 [2023-03-30 23:35:48,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:48,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 722 [2023-03-30 23:35:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:48,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 937 [2023-03-30 23:35:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:48,801 INFO L134 CoverageAnalysis]: Checked inductivity of 2689 backedges. 989 proven. 22 refuted. 0 times theorem prover too weak. 1678 trivial. 0 not checked. [2023-03-30 23:35:48,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-30 23:35:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1407876523] [2023-03-30 23:35:48,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1407876523] provided 0 perfect and 1 imperfect interpolant sequences [2023-03-30 23:35:48,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1702524516] [2023-03-30 23:35:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:48,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:48,802 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-30 23:35:48,803 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-03-30 23:35:48,831 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-03-30 23:35:49,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-30 23:35:49,167 INFO L262 TraceCheckSpWp]: Trace formula consists of 1490 conjuncts, 4 conjunts are in the unsatisfiable core [2023-03-30 23:35:49,177 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-03-30 23:35:49,330 INFO L134 CoverageAnalysis]: Checked inductivity of 2689 backedges. 988 proven. 2 refuted. 0 times theorem prover too weak. 1699 trivial. 0 not checked. [2023-03-30 23:35:49,330 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-03-30 23:35:49,661 INFO L134 CoverageAnalysis]: Checked inductivity of 2689 backedges. 988 proven. 2 refuted. 0 times theorem prover too weak. 1699 trivial. 0 not checked. [2023-03-30 23:35:49,662 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1702524516] provided 0 perfect and 2 imperfect interpolant sequences [2023-03-30 23:35:49,662 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-03-30 23:35:49,662 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 5, 5] total 12 [2023-03-30 23:35:49,662 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948516273] [2023-03-30 23:35:49,662 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-03-30 23:35:49,664 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-03-30 23:35:49,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-30 23:35:49,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-03-30 23:35:49,665 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2023-03-30 23:35:49,665 INFO L87 Difference]: Start difference. First operand 11328 states and 12058 transitions. Second operand has 12 states, 12 states have (on average 52.333333333333336) internal successors, (628), 10 states have internal predecessors, (628), 5 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:35:52,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-30 23:35:52,911 INFO L93 Difference]: Finished difference Result 24141 states and 26068 transitions. [2023-03-30 23:35:52,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-03-30 23:35:52,912 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 52.333333333333336) internal successors, (628), 10 states have internal predecessors, (628), 5 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 1096 [2023-03-30 23:35:52,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-30 23:35:52,956 INFO L225 Difference]: With dead ends: 24141 [2023-03-30 23:35:52,956 INFO L226 Difference]: Without dead ends: 13162 [2023-03-30 23:35:52,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2231 GetRequests, 2211 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=114, Invalid=266, Unknown=0, NotChecked=0, Total=380 [2023-03-30 23:35:52,973 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 1760 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 5752 mSolverCounterSat, 254 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1764 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 6006 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 254 IncrementalHoareTripleChecker+Valid, 5752 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-03-30 23:35:52,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1764 Valid, 146 Invalid, 6006 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [254 Valid, 5752 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-03-30 23:35:52,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13162 states. [2023-03-30 23:35:53,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13162 to 12817. [2023-03-30 23:35:53,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12817 states, 12532 states have (on average 1.0323172677944463) internal successors, (12937), 12622 states have internal predecessors, (12937), 107 states have call successors, (107), 76 states have call predecessors, (107), 177 states have return successors, (797), 118 states have call predecessors, (797), 106 states have call successors, (797) [2023-03-30 23:35:53,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12817 states to 12817 states and 13841 transitions. [2023-03-30 23:35:53,235 INFO L78 Accepts]: Start accepts. Automaton has 12817 states and 13841 transitions. Word has length 1096 [2023-03-30 23:35:53,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-30 23:35:53,236 INFO L495 AbstractCegarLoop]: Abstraction has 12817 states and 13841 transitions. [2023-03-30 23:35:53,237 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 52.333333333333336) internal successors, (628), 10 states have internal predecessors, (628), 5 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-03-30 23:35:53,237 INFO L276 IsEmpty]: Start isEmpty. Operand 12817 states and 13841 transitions. [2023-03-30 23:35:53,286 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1295 [2023-03-30 23:35:53,286 INFO L187 NwaCegarLoop]: Found error trace [2023-03-30 23:35:53,287 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-30 23:35:53,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-03-30 23:35:53,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-03-30 23:35:53,494 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-30 23:35:53,494 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-30 23:35:53,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1138806562, now seen corresponding path program 1 times [2023-03-30 23:35:53,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-30 23:35:53,495 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811119633] [2023-03-30 23:35:53,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-30 23:35:53,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-30 23:35:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat