/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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 06:15:28,706 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 06:15:28,708 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 06:15:28,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 06:15:28,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 06:15:28,750 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 06:15:28,753 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 06:15:28,756 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 06:15:28,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 06:15:28,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 06:15:28,764 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 06:15:28,765 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 06:15:28,765 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 06:15:28,770 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 06:15:28,772 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 06:15:28,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 06:15:28,775 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 06:15:28,776 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 06:15:28,778 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 06:15:28,786 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 06:15:28,787 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 06:15:28,788 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 06:15:28,789 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 06:15:28,789 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 06:15:28,792 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 06:15:28,792 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 06:15:28,792 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 06:15:28,793 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 06:15:28,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 06:15:28,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 06:15:28,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 06:15:28,794 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 06:15:28,795 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 06:15:28,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 06:15:28,796 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 06:15:28,796 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 06:15:28,797 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 06:15:28,797 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 06:15:28,797 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 06:15:28,798 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 06:15:28,798 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 06:15:28,799 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 [2023-04-02 06:15:28,818 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 06:15:28,819 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 06:15:28,819 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 06:15:28,819 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 06:15:28,820 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 06:15:28,820 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 06:15:28,825 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 06:15:28,826 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 06:15:28,826 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 06:15:28,826 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 06:15:28,827 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 06:15:28,827 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 06:15:28,827 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 06:15:28,827 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 06:15:28,827 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 06:15:28,827 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 06:15:28,827 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 06:15:28,827 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 06:15:28,828 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 06:15:28,828 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 06:15:28,828 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 06:15:28,828 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 06:15:28,828 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 06:15:28,829 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 06:15:28,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:15:28,829 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 06:15:28,829 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 06:15:28,829 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 06:15:28,829 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 06:15:28,829 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 06:15:28,829 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 06:15:28,830 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 06:15:28,830 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 06:15:28,830 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 06:15:28,830 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 06:15:28,830 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 06:15:29,060 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 06:15:29,089 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 06:15:29,091 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 06:15:29,092 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 06:15:29,092 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 06:15:29,094 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-02 06:15:30,299 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 06:15:30,723 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 06:15:30,724 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-02 06:15:30,754 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ffe16259/51fade998a5a4664b97821a9153dc8a9/FLAG1b2cf1791 [2023-04-02 06:15:30,768 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2ffe16259/51fade998a5a4664b97821a9153dc8a9 [2023-04-02 06:15:30,770 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 06:15:30,772 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 06:15:30,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 06:15:30,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 06:15:30,780 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 06:15:30,781 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:15:30" (1/1) ... [2023-04-02 06:15:30,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12984201 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:30, skipping insertion in model container [2023-04-02 06:15:30,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 06:15:30" (1/1) ... [2023-04-02 06:15:30,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 06:15:30,936 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 06:15:31,283 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2023-04-02 06:15:31,310 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2023-04-02 06:15:31,316 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2023-04-02 06:15:31,326 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2023-04-02 06:15:31,343 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2023-04-02 06:15:31,367 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2023-04-02 06:15:31,871 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:15:31,895 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 06:15:31,961 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[14256,14269] [2023-04-02 06:15:31,983 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[20101,20114] [2023-04-02 06:15:31,991 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[21333,21346] [2023-04-02 06:15:32,000 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[23565,23578] [2023-04-02 06:15:32,008 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[26974,26987] [2023-04-02 06:15:32,023 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/seq-mthreaded-reduced/pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c[33563,33576] [2023-04-02 06:15:32,408 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 06:15:32,434 INFO L208 MainTranslator]: Completed translation [2023-04-02 06:15:32,434 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32 WrapperNode [2023-04-02 06:15:32,434 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 06:15:32,435 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 06:15:32,436 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 06:15:32,436 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 06:15:32,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (1/1) ... [2023-04-02 06:15:32,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (1/1) ... [2023-04-02 06:15:32,505 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (1/1) ... [2023-04-02 06:15:32,506 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (1/1) ... [2023-04-02 06:15:32,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (1/1) ... [2023-04-02 06:15:32,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (1/1) ... [2023-04-02 06:15:32,643 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (1/1) ... [2023-04-02 06:15:32,707 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (1/1) ... [2023-04-02 06:15:32,740 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 06:15:32,742 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 06:15:32,743 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 06:15:32,743 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 06:15:32,743 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (1/1) ... [2023-04-02 06:15:32,748 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 06:15:32,757 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 06:15:32,770 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) [2023-04-02 06:15:32,796 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 [2023-04-02 06:15:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 06:15:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 06:15:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 06:15:32,810 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 06:15:32,811 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 06:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 06:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 06:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 06:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 06:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 06:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 06:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 06:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 06:15:32,811 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 06:15:32,812 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 06:15:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 06:15:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 06:15:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 06:15:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 06:15:32,813 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 06:15:33,262 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 06:15:33,264 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 06:15:36,469 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 06:15:36,491 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 06:15:36,491 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-04-02 06:15:36,495 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:15:36 BoogieIcfgContainer [2023-04-02 06:15:36,495 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 06:15:36,497 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 06:15:36,497 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 06:15:36,500 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 06:15:36,500 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 06:15:30" (1/3) ... [2023-04-02 06:15:36,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50079cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:15:36, skipping insertion in model container [2023-04-02 06:15:36,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 06:15:32" (2/3) ... [2023-04-02 06:15:36,501 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50079cdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 06:15:36, skipping insertion in model container [2023-04-02 06:15:36,501 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 06:15:36" (3/3) ... [2023-04-02 06:15:36,504 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.2.ufo.BOUNDED-10.pals.c.v+lhb-reducer.c [2023-04-02 06:15:36,519 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 06:15:36,519 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-04-02 06:15:36,597 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 06:15:36,602 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;@656a91d8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 06:15:36,602 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-04-02 06:15:36,613 INFO L276 IsEmpty]: Start isEmpty. Operand has 1764 states, 1753 states have (on average 1.7969195664575015) internal successors, (3150), 1759 states have internal predecessors, (3150), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-04-02 06:15:36,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 06:15:36,643 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:15:36,643 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:15:36,644 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:15:36,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:15:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 615635227, now seen corresponding path program 1 times [2023-04-02 06:15:36,660 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:15:36,660 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216575987] [2023-04-02 06:15:36,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:15:36,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:15:37,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:39,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:15:39,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:39,090 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:15:39,091 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:15:39,092 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216575987] [2023-04-02 06:15:39,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216575987] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:15:39,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:15:39,093 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:15:39,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855476095] [2023-04-02 06:15:39,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:15:39,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:15:39,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:15:39,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:15:39,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:15:39,150 INFO L87 Difference]: Start difference. First operand has 1764 states, 1753 states have (on average 1.7969195664575015) internal successors, (3150), 1759 states have internal predecessors, (3150), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:52,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:15:52,972 INFO L93 Difference]: Finished difference Result 2345 states and 4116 transitions. [2023-04-02 06:15:52,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:15:52,976 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2023-04-02 06:15:52,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:15:52,997 INFO L225 Difference]: With dead ends: 2345 [2023-04-02 06:15:52,997 INFO L226 Difference]: Without dead ends: 1991 [2023-04-02 06:15:53,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:15:53,005 INFO L413 NwaCegarLoop]: 3176 mSDtfsCounter, 1605 mSDsluCounter, 1894 mSDsCounter, 0 mSdLazyCounter, 3186 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 5070 SdHoareTripleChecker+Invalid, 3194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 3186 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:15:53,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 5070 Invalid, 3194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 3186 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2023-04-02 06:15:53,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1991 states. [2023-04-02 06:15:53,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1991 to 1981. [2023-04-02 06:15:53,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1981 states, 1972 states have (on average 1.3498985801217038) internal successors, (2662), 1977 states have internal predecessors, (2662), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1981 states to 1981 states and 2665 transitions. [2023-04-02 06:15:53,169 INFO L78 Accepts]: Start accepts. Automaton has 1981 states and 2665 transitions. Word has length 80 [2023-04-02 06:15:53,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:15:53,170 INFO L495 AbstractCegarLoop]: Abstraction has 1981 states and 2665 transitions. [2023-04-02 06:15:53,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 3 states have internal predecessors, (77), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:15:53,170 INFO L276 IsEmpty]: Start isEmpty. Operand 1981 states and 2665 transitions. [2023-04-02 06:15:53,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2023-04-02 06:15:53,177 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:15:53,178 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:15:53,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 06:15:53,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:15:53,179 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:15:53,179 INFO L85 PathProgramCache]: Analyzing trace with hash 1691419284, now seen corresponding path program 1 times [2023-04-02 06:15:53,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:15:53,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257414139] [2023-04-02 06:15:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:15:53,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:15:53,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:54,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:15:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:15:55,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:15:55,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:15:55,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257414139] [2023-04-02 06:15:55,052 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257414139] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:15:55,052 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:15:55,052 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:15:55,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554824083] [2023-04-02 06:15:55,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:15:55,054 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:15:55,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:15:55,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:15:55,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:15:55,055 INFO L87 Difference]: Start difference. First operand 1981 states and 2665 transitions. Second operand has 6 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:04,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:04,017 INFO L93 Difference]: Finished difference Result 3381 states and 4675 transitions. [2023-04-02 06:16:04,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:16:04,017 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 80 [2023-04-02 06:16:04,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:04,025 INFO L225 Difference]: With dead ends: 3381 [2023-04-02 06:16:04,025 INFO L226 Difference]: Without dead ends: 1911 [2023-04-02 06:16:04,029 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:16:04,030 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 5831 mSDsluCounter, 225 mSDsCounter, 0 mSdLazyCounter, 2624 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5831 SdHoareTripleChecker+Valid, 1228 SdHoareTripleChecker+Invalid, 2641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 2624 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:04,031 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5831 Valid, 1228 Invalid, 2641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 2624 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2023-04-02 06:16:04,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1911 states. [2023-04-02 06:16:04,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1911 to 1901. [2023-04-02 06:16:04,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1901 states, 1892 states have (on average 1.3969344608879493) internal successors, (2643), 1897 states have internal predecessors, (2643), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:04,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1901 states to 1901 states and 2646 transitions. [2023-04-02 06:16:04,115 INFO L78 Accepts]: Start accepts. Automaton has 1901 states and 2646 transitions. Word has length 80 [2023-04-02 06:16:04,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:04,116 INFO L495 AbstractCegarLoop]: Abstraction has 1901 states and 2646 transitions. [2023-04-02 06:16:04,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.4) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:04,116 INFO L276 IsEmpty]: Start isEmpty. Operand 1901 states and 2646 transitions. [2023-04-02 06:16:04,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:16:04,119 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:04,119 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:16:04,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 06:16:04,120 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:16:04,120 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:04,120 INFO L85 PathProgramCache]: Analyzing trace with hash -535127942, now seen corresponding path program 1 times [2023-04-02 06:16:04,120 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:04,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035493800] [2023-04-02 06:16:04,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:04,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:04,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:05,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:05,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:16:05,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:05,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035493800] [2023-04-02 06:16:05,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035493800] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:05,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:05,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:16:05,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975180669] [2023-04-02 06:16:05,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:05,777 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:16:05,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:05,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:16:05,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:16:05,778 INFO L87 Difference]: Start difference. First operand 1901 states and 2646 transitions. Second operand has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:15,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:15,862 INFO L93 Difference]: Finished difference Result 3453 states and 4888 transitions. [2023-04-02 06:16:15,863 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:16:15,863 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:16:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:15,873 INFO L225 Difference]: With dead ends: 3453 [2023-04-02 06:16:15,873 INFO L226 Difference]: Without dead ends: 2723 [2023-04-02 06:16:15,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:16:15,875 INFO L413 NwaCegarLoop]: 2350 mSDtfsCounter, 1496 mSDsluCounter, 1133 mSDsCounter, 0 mSdLazyCounter, 2367 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1496 SdHoareTripleChecker+Valid, 3483 SdHoareTripleChecker+Invalid, 2377 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 2367 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:15,876 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1496 Valid, 3483 Invalid, 2377 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 2367 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2023-04-02 06:16:15,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2723 states. [2023-04-02 06:16:15,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2723 to 2711. [2023-04-02 06:16:15,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2711 states, 2702 states have (on average 1.390081421169504) internal successors, (3756), 2707 states have internal predecessors, (3756), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:15,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2711 states to 2711 states and 3759 transitions. [2023-04-02 06:16:15,992 INFO L78 Accepts]: Start accepts. Automaton has 2711 states and 3759 transitions. Word has length 81 [2023-04-02 06:16:15,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:15,992 INFO L495 AbstractCegarLoop]: Abstraction has 2711 states and 3759 transitions. [2023-04-02 06:16:15,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.5) internal successors, (78), 3 states have internal predecessors, (78), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:15,992 INFO L276 IsEmpty]: Start isEmpty. Operand 2711 states and 3759 transitions. [2023-04-02 06:16:15,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-04-02 06:16:15,998 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:15,998 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:16:15,998 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 06:16:15,998 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:16:15,999 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:15,999 INFO L85 PathProgramCache]: Analyzing trace with hash 238878547, now seen corresponding path program 1 times [2023-04-02 06:16:15,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:15,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547997699] [2023-04-02 06:16:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:16,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:17,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:17,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:17,756 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:16:17,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:17,757 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547997699] [2023-04-02 06:16:17,757 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547997699] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:17,757 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:17,757 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:16:17,757 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1065410769] [2023-04-02 06:16:17,758 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:17,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:16:17,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:17,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:16:17,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:16:17,761 INFO L87 Difference]: Start difference. First operand 2711 states and 3759 transitions. Second operand has 6 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:24,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:24,268 INFO L93 Difference]: Finished difference Result 5327 states and 7593 transitions. [2023-04-02 06:16:24,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:16:24,269 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 81 [2023-04-02 06:16:24,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:24,280 INFO L225 Difference]: With dead ends: 5327 [2023-04-02 06:16:24,280 INFO L226 Difference]: Without dead ends: 3161 [2023-04-02 06:16:24,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:16:24,285 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 4644 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 2082 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4644 SdHoareTripleChecker+Valid, 1006 SdHoareTripleChecker+Invalid, 2105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2082 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:24,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4644 Valid, 1006 Invalid, 2105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2082 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 06:16:24,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3161 states. [2023-04-02 06:16:24,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3161 to 3151. [2023-04-02 06:16:24,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3151 states, 3142 states have (on average 1.4312539783577338) internal successors, (4497), 3147 states have internal predecessors, (4497), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:24,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3151 states to 3151 states and 4500 transitions. [2023-04-02 06:16:24,446 INFO L78 Accepts]: Start accepts. Automaton has 3151 states and 4500 transitions. Word has length 81 [2023-04-02 06:16:24,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:24,446 INFO L495 AbstractCegarLoop]: Abstraction has 3151 states and 4500 transitions. [2023-04-02 06:16:24,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.6) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:24,447 INFO L276 IsEmpty]: Start isEmpty. Operand 3151 states and 4500 transitions. [2023-04-02 06:16:24,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:16:24,451 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:24,452 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:16:24,452 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 06:16:24,452 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:16:24,452 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:24,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1320553341, now seen corresponding path program 1 times [2023-04-02 06:16:24,453 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:24,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947222975] [2023-04-02 06:16:24,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:24,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:24,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:25,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:25,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:16:26,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:26,008 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947222975] [2023-04-02 06:16:26,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947222975] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:26,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:26,008 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:16:26,008 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22995656] [2023-04-02 06:16:26,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:26,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:16:26,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:26,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:16:26,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:16:26,010 INFO L87 Difference]: Start difference. First operand 3151 states and 4500 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:33,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:33,512 INFO L93 Difference]: Finished difference Result 6187 states and 8960 transitions. [2023-04-02 06:16:33,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:16:33,512 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-02 06:16:33,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:33,528 INFO L225 Difference]: With dead ends: 6187 [2023-04-02 06:16:33,529 INFO L226 Difference]: Without dead ends: 4471 [2023-04-02 06:16:33,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:16:33,535 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1098 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 1796 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 2719 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 1796 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:33,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 2719 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 1796 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2023-04-02 06:16:33,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2023-04-02 06:16:33,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4455. [2023-04-02 06:16:33,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4455 states, 4446 states have (on average 1.419928025191183) internal successors, (6313), 4451 states have internal predecessors, (6313), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:33,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4455 states to 4455 states and 6316 transitions. [2023-04-02 06:16:33,814 INFO L78 Accepts]: Start accepts. Automaton has 4455 states and 6316 transitions. Word has length 82 [2023-04-02 06:16:33,815 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:33,815 INFO L495 AbstractCegarLoop]: Abstraction has 4455 states and 6316 transitions. [2023-04-02 06:16:33,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:33,815 INFO L276 IsEmpty]: Start isEmpty. Operand 4455 states and 6316 transitions. [2023-04-02 06:16:33,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:16:33,822 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:33,822 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:16:33,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 06:16:33,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:16:33,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:33,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1703471578, now seen corresponding path program 1 times [2023-04-02 06:16:33,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:33,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989100700] [2023-04-02 06:16:33,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:33,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:33,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:35,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:35,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:35,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:16:35,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:35,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989100700] [2023-04-02 06:16:35,559 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989100700] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:35,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:35,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:16:35,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118718289] [2023-04-02 06:16:35,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:35,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:16:35,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:35,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:16:35,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:16:35,562 INFO L87 Difference]: Start difference. First operand 4455 states and 6316 transitions. Second operand has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:41,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:41,364 INFO L93 Difference]: Finished difference Result 9847 states and 14239 transitions. [2023-04-02 06:16:41,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:16:41,365 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-02 06:16:41,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:41,383 INFO L225 Difference]: With dead ends: 9847 [2023-04-02 06:16:41,384 INFO L226 Difference]: Without dead ends: 6219 [2023-04-02 06:16:41,390 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:16:41,391 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 4011 mSDsluCounter, 205 mSDsCounter, 0 mSdLazyCounter, 1824 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4011 SdHoareTripleChecker+Valid, 881 SdHoareTripleChecker+Invalid, 1859 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 1824 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:41,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4011 Valid, 881 Invalid, 1859 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 1824 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-02 06:16:41,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6219 states. [2023-04-02 06:16:41,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6219 to 6209. [2023-04-02 06:16:41,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6209 states, 6200 states have (on average 1.4361290322580644) internal successors, (8904), 6205 states have internal predecessors, (8904), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:41,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6209 states to 6209 states and 8907 transitions. [2023-04-02 06:16:41,804 INFO L78 Accepts]: Start accepts. Automaton has 6209 states and 8907 transitions. Word has length 82 [2023-04-02 06:16:41,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:41,805 INFO L495 AbstractCegarLoop]: Abstraction has 6209 states and 8907 transitions. [2023-04-02 06:16:41,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 15.8) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:41,805 INFO L276 IsEmpty]: Start isEmpty. Operand 6209 states and 8907 transitions. [2023-04-02 06:16:41,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:16:41,812 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:41,813 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:16:41,813 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 06:16:41,813 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:16:41,813 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:41,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1819153759, now seen corresponding path program 1 times [2023-04-02 06:16:41,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:41,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581089134] [2023-04-02 06:16:41,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:41,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:43,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:43,379 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:16:43,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:43,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581089134] [2023-04-02 06:16:43,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581089134] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:43,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:43,380 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:16:43,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1952351671] [2023-04-02 06:16:43,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:43,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:16:43,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:43,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:16:43,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:16:43,384 INFO L87 Difference]: Start difference. First operand 6209 states and 8907 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:49,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:49,330 INFO L93 Difference]: Finished difference Result 12447 states and 18120 transitions. [2023-04-02 06:16:49,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:16:49,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-02 06:16:49,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:49,360 INFO L225 Difference]: With dead ends: 12447 [2023-04-02 06:16:49,360 INFO L226 Difference]: Without dead ends: 8375 [2023-04-02 06:16:49,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:16:49,371 INFO L413 NwaCegarLoop]: 1218 mSDtfsCounter, 718 mSDsluCounter, 783 mSDsCounter, 0 mSdLazyCounter, 1259 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2001 SdHoareTripleChecker+Invalid, 1287 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 1259 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:49,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 2001 Invalid, 1287 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 1259 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-02 06:16:49,379 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8375 states. [2023-04-02 06:16:49,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8375 to 8347. [2023-04-02 06:16:49,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8347 states, 8338 states have (on average 1.428520028783881) internal successors, (11911), 8343 states have internal predecessors, (11911), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:49,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8347 states to 8347 states and 11914 transitions. [2023-04-02 06:16:50,000 INFO L78 Accepts]: Start accepts. Automaton has 8347 states and 11914 transitions. Word has length 82 [2023-04-02 06:16:50,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:50,000 INFO L495 AbstractCegarLoop]: Abstraction has 8347 states and 11914 transitions. [2023-04-02 06:16:50,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:50,001 INFO L276 IsEmpty]: Start isEmpty. Operand 8347 states and 11914 transitions. [2023-04-02 06:16:50,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2023-04-02 06:16:50,011 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:50,011 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:16:50,012 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 06:16:50,013 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:16:50,013 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:50,014 INFO L85 PathProgramCache]: Analyzing trace with hash 1726634204, now seen corresponding path program 1 times [2023-04-02 06:16:50,014 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:50,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97137338] [2023-04-02 06:16:50,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:50,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:50,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:16:51,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:16:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:16:51,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:16:51,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97137338] [2023-04-02 06:16:51,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97137338] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:16:51,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:16:51,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-04-02 06:16:51,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361400195] [2023-04-02 06:16:51,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:16:51,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-04-02 06:16:51,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:16:51,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-04-02 06:16:51,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-04-02 06:16:51,555 INFO L87 Difference]: Start difference. First operand 8347 states and 11914 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:58,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:16:58,110 INFO L93 Difference]: Finished difference Result 19889 states and 28395 transitions. [2023-04-02 06:16:58,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:16:58,111 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 82 [2023-04-02 06:16:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:16:58,142 INFO L225 Difference]: With dead ends: 19889 [2023-04-02 06:16:58,143 INFO L226 Difference]: Without dead ends: 14376 [2023-04-02 06:16:58,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:16:58,155 INFO L413 NwaCegarLoop]: 1269 mSDtfsCounter, 707 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 1347 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 2150 SdHoareTripleChecker+Invalid, 1405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 1347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-04-02 06:16:58,155 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 2150 Invalid, 1405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 1347 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-04-02 06:16:58,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14376 states. [2023-04-02 06:16:59,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14376 to 14366. [2023-04-02 06:16:59,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14366 states, 14357 states have (on average 1.401406979173922) internal successors, (20120), 14362 states have internal predecessors, (20120), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14366 states to 14366 states and 20123 transitions. [2023-04-02 06:16:59,193 INFO L78 Accepts]: Start accepts. Automaton has 14366 states and 20123 transitions. Word has length 82 [2023-04-02 06:16:59,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:16:59,194 INFO L495 AbstractCegarLoop]: Abstraction has 14366 states and 20123 transitions. [2023-04-02 06:16:59,194 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 3 states have internal predecessors, (79), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:16:59,194 INFO L276 IsEmpty]: Start isEmpty. Operand 14366 states and 20123 transitions. [2023-04-02 06:16:59,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:16:59,208 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:16:59,208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:16:59,208 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 06:16:59,209 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr4ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:16:59,209 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:16:59,209 INFO L85 PathProgramCache]: Analyzing trace with hash -99895838, now seen corresponding path program 1 times [2023-04-02 06:16:59,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:16:59,209 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932108140] [2023-04-02 06:16:59,209 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:16:59,209 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:16:59,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:00,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:00,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:00,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:17:00,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932108140] [2023-04-02 06:17:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932108140] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:00,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:00,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:17:00,884 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853599138] [2023-04-02 06:17:00,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:00,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:17:00,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:00,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:17:00,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:17:00,885 INFO L87 Difference]: Start difference. First operand 14366 states and 20123 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:10,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:10,642 INFO L93 Difference]: Finished difference Result 51433 states and 73330 transitions. [2023-04-02 06:17:10,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:17:10,643 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-02 06:17:10,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:10,764 INFO L225 Difference]: With dead ends: 51433 [2023-04-02 06:17:10,765 INFO L226 Difference]: Without dead ends: 46977 [2023-04-02 06:17:10,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:17:10,794 INFO L413 NwaCegarLoop]: 717 mSDtfsCounter, 7654 mSDsluCounter, 1090 mSDsCounter, 0 mSdLazyCounter, 2506 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7654 SdHoareTripleChecker+Valid, 1807 SdHoareTripleChecker+Invalid, 2651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 2506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:10,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7654 Valid, 1807 Invalid, 2651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 2506 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 06:17:10,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46977 states. [2023-04-02 06:17:12,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46977 to 14414. [2023-04-02 06:17:12,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14414 states, 14405 states have (on average 1.4011801457827144) internal successors, (20184), 14410 states have internal predecessors, (20184), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:12,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14414 states to 14414 states and 20187 transitions. [2023-04-02 06:17:12,726 INFO L78 Accepts]: Start accepts. Automaton has 14414 states and 20187 transitions. Word has length 83 [2023-04-02 06:17:12,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:12,726 INFO L495 AbstractCegarLoop]: Abstraction has 14414 states and 20187 transitions. [2023-04-02 06:17:12,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:12,726 INFO L276 IsEmpty]: Start isEmpty. Operand 14414 states and 20187 transitions. [2023-04-02 06:17:12,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:17:12,739 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:12,739 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:17:12,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 06:17:12,740 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:17:12,740 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:12,740 INFO L85 PathProgramCache]: Analyzing trace with hash -982340823, now seen corresponding path program 1 times [2023-04-02 06:17:12,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:12,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482744945] [2023-04-02 06:17:12,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:12,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:12,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:14,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:14,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:14,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:17:14,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:14,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482744945] [2023-04-02 06:17:14,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482744945] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:14,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:14,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:17:14,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037973250] [2023-04-02 06:17:14,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:14,418 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:17:14,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:14,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:17:14,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:17:14,419 INFO L87 Difference]: Start difference. First operand 14414 states and 20187 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:27,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:27,052 INFO L93 Difference]: Finished difference Result 59942 states and 85450 transitions. [2023-04-02 06:17:27,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:17:27,052 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-02 06:17:27,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:27,167 INFO L225 Difference]: With dead ends: 59942 [2023-04-02 06:17:27,167 INFO L226 Difference]: Without dead ends: 54170 [2023-04-02 06:17:27,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:17:27,196 INFO L413 NwaCegarLoop]: 714 mSDtfsCounter, 7076 mSDsluCounter, 1070 mSDsCounter, 0 mSdLazyCounter, 2540 mSolverCounterSat, 142 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7076 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 2682 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 142 IncrementalHoareTripleChecker+Valid, 2540 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:27,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7076 Valid, 1784 Invalid, 2682 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [142 Valid, 2540 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-02 06:17:27,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54170 states. [2023-04-02 06:17:29,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54170 to 14594. [2023-04-02 06:17:29,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14594 states, 14585 states have (on average 1.4003428179636612) internal successors, (20424), 14590 states have internal predecessors, (20424), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14594 states to 14594 states and 20427 transitions. [2023-04-02 06:17:29,251 INFO L78 Accepts]: Start accepts. Automaton has 14594 states and 20427 transitions. Word has length 83 [2023-04-02 06:17:29,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:29,251 INFO L495 AbstractCegarLoop]: Abstraction has 14594 states and 20427 transitions. [2023-04-02 06:17:29,251 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:29,252 INFO L276 IsEmpty]: Start isEmpty. Operand 14594 states and 20427 transitions. [2023-04-02 06:17:29,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-04-02 06:17:29,264 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:29,264 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:17:29,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 06:17:29,265 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:17:29,265 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:29,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1019129348, now seen corresponding path program 1 times [2023-04-02 06:17:29,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:29,265 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [849490408] [2023-04-02 06:17:29,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:29,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:30,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:30,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:30,988 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:17:30,989 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:30,989 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [849490408] [2023-04-02 06:17:30,989 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [849490408] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:30,989 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:30,989 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:17:30,989 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446484037] [2023-04-02 06:17:30,989 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:30,990 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:17:30,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:30,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:17:30,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:17:30,990 INFO L87 Difference]: Start difference. First operand 14594 states and 20427 transitions. Second operand has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:44,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:44,622 INFO L93 Difference]: Finished difference Result 54634 states and 77734 transitions. [2023-04-02 06:17:44,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:17:44,623 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 83 [2023-04-02 06:17:44,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:44,714 INFO L225 Difference]: With dead ends: 54634 [2023-04-02 06:17:44,715 INFO L226 Difference]: Without dead ends: 49156 [2023-04-02 06:17:44,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:17:44,742 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 6695 mSDsluCounter, 1058 mSDsCounter, 0 mSdLazyCounter, 2570 mSolverCounterSat, 144 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6695 SdHoareTripleChecker+Valid, 1760 SdHoareTripleChecker+Invalid, 2714 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 144 IncrementalHoareTripleChecker+Valid, 2570 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:44,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6695 Valid, 1760 Invalid, 2714 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [144 Valid, 2570 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-04-02 06:17:44,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49156 states. [2023-04-02 06:17:47,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49156 to 14894. [2023-04-02 06:17:47,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14894 states, 14885 states have (on average 1.399261001007726) internal successors, (20828), 14890 states have internal predecessors, (20828), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:47,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14894 states to 14894 states and 20831 transitions. [2023-04-02 06:17:47,167 INFO L78 Accepts]: Start accepts. Automaton has 14894 states and 20831 transitions. Word has length 83 [2023-04-02 06:17:47,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:47,167 INFO L495 AbstractCegarLoop]: Abstraction has 14894 states and 20831 transitions. [2023-04-02 06:17:47,167 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.428571428571429) internal successors, (80), 6 states have internal predecessors, (80), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:47,167 INFO L276 IsEmpty]: Start isEmpty. Operand 14894 states and 20831 transitions. [2023-04-02 06:17:47,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:17:47,181 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:47,181 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:17:47,181 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 06:17:47,182 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:17:47,182 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:47,182 INFO L85 PathProgramCache]: Analyzing trace with hash -1704633008, now seen corresponding path program 1 times [2023-04-02 06:17:47,182 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:47,182 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1785534463] [2023-04-02 06:17:47,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:47,183 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:47,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:48,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:17:48,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:17:48,796 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:17:48,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:17:48,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1785534463] [2023-04-02 06:17:48,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1785534463] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:17:48,797 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:17:48,797 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:17:48,797 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017285423] [2023-04-02 06:17:48,797 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:17:48,797 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:17:48,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:17:48,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:17:48,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:17:48,798 INFO L87 Difference]: Start difference. First operand 14894 states and 20831 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:56,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:17:56,967 INFO L93 Difference]: Finished difference Result 34136 states and 47927 transitions. [2023-04-02 06:17:56,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:17:56,967 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-02 06:17:56,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:17:56,999 INFO L225 Difference]: With dead ends: 34136 [2023-04-02 06:17:56,999 INFO L226 Difference]: Without dead ends: 20118 [2023-04-02 06:17:57,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:17:57,021 INFO L413 NwaCegarLoop]: 706 mSDtfsCounter, 4172 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 1795 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4172 SdHoareTripleChecker+Valid, 927 SdHoareTripleChecker+Invalid, 1805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-04-02 06:17:57,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4172 Valid, 927 Invalid, 1805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1795 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-04-02 06:17:57,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20118 states. [2023-04-02 06:17:58,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20118 to 14894. [2023-04-02 06:17:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14894 states, 14885 states have (on average 1.3955660060463555) internal successors, (20773), 14890 states have internal predecessors, (20773), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:58,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14894 states to 14894 states and 20776 transitions. [2023-04-02 06:17:58,953 INFO L78 Accepts]: Start accepts. Automaton has 14894 states and 20776 transitions. Word has length 84 [2023-04-02 06:17:58,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:17:58,954 INFO L495 AbstractCegarLoop]: Abstraction has 14894 states and 20776 transitions. [2023-04-02 06:17:58,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:17:58,954 INFO L276 IsEmpty]: Start isEmpty. Operand 14894 states and 20776 transitions. [2023-04-02 06:17:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:17:58,964 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:17:58,964 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:17:58,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-04-02 06:17:58,965 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:17:58,965 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:17:58,965 INFO L85 PathProgramCache]: Analyzing trace with hash 2134492827, now seen corresponding path program 1 times [2023-04-02 06:17:58,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:17:58,965 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961577043] [2023-04-02 06:17:58,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:17:58,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:17:59,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:00,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:00,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:00,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:00,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961577043] [2023-04-02 06:18:00,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961577043] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:00,887 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:00,887 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:18:00,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495766412] [2023-04-02 06:18:00,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:00,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:18:00,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:00,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:18:00,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:18:00,889 INFO L87 Difference]: Start difference. First operand 14894 states and 20776 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:08,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:08,837 INFO L93 Difference]: Finished difference Result 22402 states and 31631 transitions. [2023-04-02 06:18:08,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:18:08,837 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-02 06:18:08,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:08,865 INFO L225 Difference]: With dead ends: 22402 [2023-04-02 06:18:08,866 INFO L226 Difference]: Without dead ends: 22400 [2023-04-02 06:18:08,871 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:18:08,871 INFO L413 NwaCegarLoop]: 1332 mSDtfsCounter, 150 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3794 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:08,872 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 3794 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2023-04-02 06:18:08,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22400 states. [2023-04-02 06:18:11,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22400 to 14892. [2023-04-02 06:18:11,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14892 states, 14884 states have (on average 1.3931738779897878) internal successors, (20736), 14888 states have internal predecessors, (20736), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:11,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14892 states to 14892 states and 20739 transitions. [2023-04-02 06:18:11,086 INFO L78 Accepts]: Start accepts. Automaton has 14892 states and 20739 transitions. Word has length 84 [2023-04-02 06:18:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:11,086 INFO L495 AbstractCegarLoop]: Abstraction has 14892 states and 20739 transitions. [2023-04-02 06:18:11,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:11,086 INFO L276 IsEmpty]: Start isEmpty. Operand 14892 states and 20739 transitions. [2023-04-02 06:18:11,096 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:18:11,096 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:11,096 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:11,097 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 06:18:11,098 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:18:11,098 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:11,098 INFO L85 PathProgramCache]: Analyzing trace with hash -811376112, now seen corresponding path program 1 times [2023-04-02 06:18:11,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:11,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406225752] [2023-04-02 06:18:11,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:11,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:11,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:12,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:12,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:12,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:12,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:12,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406225752] [2023-04-02 06:18:12,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406225752] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:12,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:12,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:18:12,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130105813] [2023-04-02 06:18:12,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:12,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-04-02 06:18:12,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:12,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-04-02 06:18:12,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:18:12,932 INFO L87 Difference]: Start difference. First operand 14892 states and 20739 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:21,431 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:21,431 INFO L93 Difference]: Finished difference Result 22400 states and 31594 transitions. [2023-04-02 06:18:21,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-04-02 06:18:21,432 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-02 06:18:21,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:21,469 INFO L225 Difference]: With dead ends: 22400 [2023-04-02 06:18:21,469 INFO L226 Difference]: Without dead ends: 22398 [2023-04-02 06:18:21,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-04-02 06:18:21,483 INFO L413 NwaCegarLoop]: 1331 mSDtfsCounter, 150 mSDsluCounter, 2458 mSDsCounter, 0 mSdLazyCounter, 1397 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 3789 SdHoareTripleChecker+Invalid, 1398 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 1397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:21,483 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 3789 Invalid, 1398 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 1397 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2023-04-02 06:18:21,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22398 states. [2023-04-02 06:18:23,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22398 to 14890. [2023-04-02 06:18:23,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14890 states, 14883 states have (on average 1.3907814284754418) internal successors, (20699), 14886 states have internal predecessors, (20699), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:23,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14890 states to 14890 states and 20702 transitions. [2023-04-02 06:18:23,944 INFO L78 Accepts]: Start accepts. Automaton has 14890 states and 20702 transitions. Word has length 84 [2023-04-02 06:18:23,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:23,944 INFO L495 AbstractCegarLoop]: Abstraction has 14890 states and 20702 transitions. [2023-04-02 06:18:23,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:23,945 INFO L276 IsEmpty]: Start isEmpty. Operand 14890 states and 20702 transitions. [2023-04-02 06:18:23,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-04-02 06:18:23,956 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:23,956 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:23,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 06:18:23,956 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:18:23,957 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:23,957 INFO L85 PathProgramCache]: Analyzing trace with hash -1620904792, now seen corresponding path program 1 times [2023-04-02 06:18:23,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:23,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482774831] [2023-04-02 06:18:23,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:23,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:24,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:25,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:25,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:25,496 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:25,496 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:25,496 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482774831] [2023-04-02 06:18:25,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482774831] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:25,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:25,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-04-02 06:18:25,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374475613] [2023-04-02 06:18:25,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:25,497 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-04-02 06:18:25,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:25,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-04-02 06:18:25,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-04-02 06:18:25,498 INFO L87 Difference]: Start difference. First operand 14890 states and 20702 transitions. Second operand has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:34,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:34,255 INFO L93 Difference]: Finished difference Result 33338 states and 46328 transitions. [2023-04-02 06:18:34,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-04-02 06:18:34,255 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 84 [2023-04-02 06:18:34,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:34,287 INFO L225 Difference]: With dead ends: 33338 [2023-04-02 06:18:34,287 INFO L226 Difference]: Without dead ends: 19257 [2023-04-02 06:18:34,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-04-02 06:18:34,308 INFO L413 NwaCegarLoop]: 628 mSDtfsCounter, 3625 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1729 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3625 SdHoareTripleChecker+Valid, 788 SdHoareTripleChecker+Invalid, 1802 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:34,308 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3625 Valid, 788 Invalid, 1802 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 1729 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-04-02 06:18:34,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19257 states. [2023-04-02 06:18:37,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19257 to 19197. [2023-04-02 06:18:37,610 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19197 states, 19190 states have (on average 1.3771756122980718) internal successors, (26428), 19193 states have internal predecessors, (26428), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:37,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19197 states to 19197 states and 26431 transitions. [2023-04-02 06:18:37,640 INFO L78 Accepts]: Start accepts. Automaton has 19197 states and 26431 transitions. Word has length 84 [2023-04-02 06:18:37,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:18:37,640 INFO L495 AbstractCegarLoop]: Abstraction has 19197 states and 26431 transitions. [2023-04-02 06:18:37,640 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:37,640 INFO L276 IsEmpty]: Start isEmpty. Operand 19197 states and 26431 transitions. [2023-04-02 06:18:37,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:18:37,651 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:18:37,651 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:18:37,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-04-02 06:18:37,651 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:18:37,651 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:18:37,652 INFO L85 PathProgramCache]: Analyzing trace with hash -341854436, now seen corresponding path program 1 times [2023-04-02 06:18:37,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:18:37,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1764498798] [2023-04-02 06:18:37,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:18:37,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:18:37,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:39,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:18:39,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:18:39,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:18:39,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:18:39,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1764498798] [2023-04-02 06:18:39,373 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1764498798] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:18:39,373 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:18:39,373 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:18:39,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794384953] [2023-04-02 06:18:39,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:18:39,373 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:18:39,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:18:39,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:18:39,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:18:39,374 INFO L87 Difference]: Start difference. First operand 19197 states and 26431 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:18:58,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 06:18:58,288 INFO L93 Difference]: Finished difference Result 66803 states and 92744 transitions. [2023-04-02 06:18:58,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-04-02 06:18:58,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 85 [2023-04-02 06:18:58,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 06:18:58,379 INFO L225 Difference]: With dead ends: 66803 [2023-04-02 06:18:58,380 INFO L226 Difference]: Without dead ends: 57419 [2023-04-02 06:18:58,400 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2023-04-02 06:18:58,401 INFO L413 NwaCegarLoop]: 715 mSDtfsCounter, 6330 mSDsluCounter, 1008 mSDsCounter, 0 mSdLazyCounter, 2247 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6330 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 2390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2023-04-02 06:18:58,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6330 Valid, 1723 Invalid, 2390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2247 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2023-04-02 06:18:58,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57419 states. [2023-04-02 06:19:02,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57419 to 19281. [2023-04-02 06:19:02,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19281 states, 19274 states have (on average 1.3767770052921033) internal successors, (26536), 19277 states have internal predecessors, (26536), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:02,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19281 states to 19281 states and 26539 transitions. [2023-04-02 06:19:02,622 INFO L78 Accepts]: Start accepts. Automaton has 19281 states and 26539 transitions. Word has length 85 [2023-04-02 06:19:02,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 06:19:02,622 INFO L495 AbstractCegarLoop]: Abstraction has 19281 states and 26539 transitions. [2023-04-02 06:19:02,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-04-02 06:19:02,623 INFO L276 IsEmpty]: Start isEmpty. Operand 19281 states and 26539 transitions. [2023-04-02 06:19:02,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-04-02 06:19:02,633 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 06:19:02,633 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 06:19:02,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-04-02 06:19:02,633 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr1ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-04-02 06:19:02,633 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 06:19:02,633 INFO L85 PathProgramCache]: Analyzing trace with hash -530097046, now seen corresponding path program 1 times [2023-04-02 06:19:02,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 06:19:02,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838479189] [2023-04-02 06:19:02,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 06:19:02,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 06:19:02,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:04,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 06:19:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 06:19:04,328 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 06:19:04,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 06:19:04,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838479189] [2023-04-02 06:19:04,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838479189] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 06:19:04,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 06:19:04,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-04-02 06:19:04,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [473411554] [2023-04-02 06:19:04,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 06:19:04,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-04-02 06:19:04,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 06:19:04,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-04-02 06:19:04,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2023-04-02 06:19:04,330 INFO L87 Difference]: Start difference. First operand 19281 states and 26539 transitions. Second operand has 8 states, 7 states have (on average 11.714285714285714) internal successors, (82), 6 states have internal predecessors, (82), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1)