/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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:48:24,784 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:48:24,786 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:48:24,828 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-03-31 01:48:24,828 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-03-31 01:48:24,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-03-31 01:48:24,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-03-31 01:48:24,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-03-31 01:48:24,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-03-31 01:48:24,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-03-31 01:48:24,843 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-03-31 01:48:24,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-03-31 01:48:24,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:48:24,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:48:24,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:48:24,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:48:24,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:48:24,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:48:24,851 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:48:24,856 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:48:24,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:48:24,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:48:24,858 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:48:24,859 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:48:24,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-03-31 01:48:24,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-03-31 01:48:24,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-03-31 01:48:24,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-03-31 01:48:24,869 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-03-31 01:48:24,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-03-31 01:48:24,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-03-31 01:48:24,870 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-03-31 01:48:24,871 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-03-31 01:48:24,872 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-03-31 01:48:24,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-03-31 01:48:24,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-03-31 01:48:24,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-03-31 01:48:24,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-03-31 01:48:24,873 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:48:24,874 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:48:24,874 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:48:24,875 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 01:48:24,906 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:48:24,906 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:48:24,906 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:48:24,906 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:48:24,908 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:48:24,908 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:48:24,908 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:48:24,908 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:48:24,908 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:48:24,908 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:48:24,909 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:48:24,909 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:48:24,909 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:48:24,910 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:48:24,910 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:48:24,910 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:48:24,910 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:48:24,910 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:48:24,910 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:48:24,910 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:48:24,910 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:48:24,910 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:48:24,911 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:48:24,911 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:48:24,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:48:24,911 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:48:24,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:48:24,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:48:24,911 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:48:24,911 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:48:24,911 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:48:24,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:48:24,912 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:48:24,912 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:48:24,912 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:48:24,912 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:48:25,150 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:48:25,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:48:25,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:48:25,175 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:48:25,175 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:48:25,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:48:26,350 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:48:26,760 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:48:26,760 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:48:26,785 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ae76a33/ad05b1f21d364ff397b32f9e8bd049ce/FLAG5def94f21 [2023-03-31 01:48:26,800 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46ae76a33/ad05b1f21d364ff397b32f9e8bd049ce [2023-03-31 01:48:26,802 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:48:26,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:48:26,807 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:48:26,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:48:26,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:48:26,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:48:26" (1/1) ... [2023-03-31 01:48:26,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@642610d8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:26, skipping insertion in model container [2023-03-31 01:48:26,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:48:26" (1/1) ... [2023-03-31 01:48:26,818 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:48:26,933 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:48:27,256 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11900,11913] [2023-03-31 01:48:27,284 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18638,18651] [2023-03-31 01:48:27,307 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20836,20849] [2023-03-31 01:48:27,312 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21913,21926] [2023-03-31 01:48:27,326 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25266,25279] [2023-03-31 01:48:27,331 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26346,26359] [2023-03-31 01:48:27,340 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28575,28588] [2023-03-31 01:48:27,684 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:48:27,702 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:48:27,762 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[11900,11913] [2023-03-31 01:48:27,782 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[18638,18651] [2023-03-31 01:48:27,789 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[20836,20849] [2023-03-31 01:48:27,800 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[21913,21926] [2023-03-31 01:48:27,817 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[25266,25279] [2023-03-31 01:48:27,819 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[26346,26359] [2023-03-31 01:48:27,824 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.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c[28575,28588] [2023-03-31 01:48:28,011 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:48:28,041 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:48:28,042 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28 WrapperNode [2023-03-31 01:48:28,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:48:28,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:48:28,044 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:48:28,044 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:48:28,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (1/1) ... [2023-03-31 01:48:28,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (1/1) ... [2023-03-31 01:48:28,107 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (1/1) ... [2023-03-31 01:48:28,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (1/1) ... [2023-03-31 01:48:28,198 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (1/1) ... [2023-03-31 01:48:28,224 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (1/1) ... [2023-03-31 01:48:28,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (1/1) ... [2023-03-31 01:48:28,271 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (1/1) ... [2023-03-31 01:48:28,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:48:28,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:48:28,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:48:28,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:48:28,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (1/1) ... [2023-03-31 01:48:28,299 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:48:28,309 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:48:28,322 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 01:48:28,343 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 01:48:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:48:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:48:28,360 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:48:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:48:28,361 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:48:28,361 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:48:28,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:48:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:48:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:48:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:48:28,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:48:28,729 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:48:28,747 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:48:31,191 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:48:31,213 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:48:31,214 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:48:31,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:48:31 BoogieIcfgContainer [2023-03-31 01:48:31,217 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:48:31,220 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:48:31,220 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:48:31,224 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:48:31,224 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:48:26" (1/3) ... [2023-03-31 01:48:31,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9ac3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:48:31, skipping insertion in model container [2023-03-31 01:48:31,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:48:28" (2/3) ... [2023-03-31 01:48:31,225 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f9ac3ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:48:31, skipping insertion in model container [2023-03-31 01:48:31,225 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:48:31" (3/3) ... [2023-03-31 01:48:31,226 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.4.1.ufo.UNBOUNDED.pals.c.v+lhb-reducer.c [2023-03-31 01:48:31,241 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:48:31,242 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2023-03-31 01:48:31,315 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:48:31,322 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;@58a435a6, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:48:31,322 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-03-31 01:48:31,331 INFO L276 IsEmpty]: Start isEmpty. Operand has 1107 states, 1095 states have (on average 1.88675799086758) internal successors, (2066), 1102 states have internal predecessors, (2066), 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) [2023-03-31 01:48:31,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:48:31,351 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:31,353 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] [2023-03-31 01:48:31,353 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr3ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:48:31,357 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:31,358 INFO L85 PathProgramCache]: Analyzing trace with hash 2085007853, now seen corresponding path program 1 times [2023-03-31 01:48:31,366 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:31,366 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [708864873] [2023-03-31 01:48:31,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:31,367 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:31,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:33,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:33,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:33,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:48:33,441 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:33,441 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [708864873] [2023-03-31 01:48:33,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [708864873] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:33,443 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:33,443 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:48:33,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993277179] [2023-03-31 01:48:33,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:33,448 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:48:33,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:33,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:48:33,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:48:33,484 INFO L87 Difference]: Start difference. First operand has 1107 states, 1095 states have (on average 1.88675799086758) internal successors, (2066), 1102 states have internal predecessors, (2066), 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 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-03-31 01:48:42,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:42,563 INFO L93 Difference]: Finished difference Result 1491 states and 2699 transitions. [2023-03-31 01:48:42,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:48:42,566 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 67 [2023-03-31 01:48:42,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:42,585 INFO L225 Difference]: With dead ends: 1491 [2023-03-31 01:48:42,585 INFO L226 Difference]: Without dead ends: 1270 [2023-03-31 01:48:42,589 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:48:42,591 INFO L413 NwaCegarLoop]: 2070 mSDtfsCounter, 1028 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1028 SdHoareTripleChecker+Valid, 3327 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:42,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1028 Valid, 3327 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2023-03-31 01:48:42,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1270 states. [2023-03-31 01:48:42,677 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1270 to 1262. [2023-03-31 01:48:42,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1262 states, 1252 states have (on average 1.3202875399361023) internal successors, (1653), 1258 states have internal predecessors, (1653), 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) [2023-03-31 01:48:42,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1262 states to 1262 states and 1656 transitions. [2023-03-31 01:48:42,685 INFO L78 Accepts]: Start accepts. Automaton has 1262 states and 1656 transitions. Word has length 67 [2023-03-31 01:48:42,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:48:42,685 INFO L495 AbstractCegarLoop]: Abstraction has 1262 states and 1656 transitions. [2023-03-31 01:48:42,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-03-31 01:48:42,686 INFO L276 IsEmpty]: Start isEmpty. Operand 1262 states and 1656 transitions. [2023-03-31 01:48:42,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:48:42,689 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:42,689 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] [2023-03-31 01:48:42,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:48:42,690 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:48:42,690 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:42,690 INFO L85 PathProgramCache]: Analyzing trace with hash 1813506392, now seen corresponding path program 1 times [2023-03-31 01:48:42,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:42,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313858093] [2023-03-31 01:48:42,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:42,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:42,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:44,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:44,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:48:44,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:44,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313858093] [2023-03-31 01:48:44,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313858093] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:44,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:44,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:48:44,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828142314] [2023-03-31 01:48:44,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:44,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:48:44,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:44,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:48:44,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:48:44,357 INFO L87 Difference]: Start difference. First operand 1262 states and 1656 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-03-31 01:48:50,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:50,574 INFO L93 Difference]: Finished difference Result 2008 states and 2689 transitions. [2023-03-31 01:48:50,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:48:50,575 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 67 [2023-03-31 01:48:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:50,580 INFO L225 Difference]: With dead ends: 2008 [2023-03-31 01:48:50,580 INFO L226 Difference]: Without dead ends: 1353 [2023-03-31 01:48:50,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:48:50,584 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 3915 mSDsluCounter, 133 mSDsCounter, 0 mSdLazyCounter, 1835 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3915 SdHoareTripleChecker+Valid, 864 SdHoareTripleChecker+Invalid, 1926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 1835 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:50,585 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3915 Valid, 864 Invalid, 1926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 1835 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2023-03-31 01:48:50,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1353 states. [2023-03-31 01:48:50,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1353 to 1345. [2023-03-31 01:48:50,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1335 states have (on average 1.3131086142322097) internal successors, (1753), 1341 states have internal predecessors, (1753), 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) [2023-03-31 01:48:50,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 1756 transitions. [2023-03-31 01:48:50,640 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 1756 transitions. Word has length 67 [2023-03-31 01:48:50,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:48:50,641 INFO L495 AbstractCegarLoop]: Abstraction has 1345 states and 1756 transitions. [2023-03-31 01:48:50,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-03-31 01:48:50,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 1756 transitions. [2023-03-31 01:48:50,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:48:50,643 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:50,643 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] [2023-03-31 01:48:50,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:48:50,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr2ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:48:50,644 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:50,644 INFO L85 PathProgramCache]: Analyzing trace with hash -217048043, now seen corresponding path program 1 times [2023-03-31 01:48:50,644 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:50,645 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [240112192] [2023-03-31 01:48:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:50,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:50,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:51,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:52,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:48:52,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:52,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [240112192] [2023-03-31 01:48:52,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [240112192] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:52,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:52,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:48:52,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115891273] [2023-03-31 01:48:52,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:52,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:48:52,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:52,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:48:52,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:48:52,047 INFO L87 Difference]: Start difference. First operand 1345 states and 1756 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-03-31 01:48:57,771 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:48:57,772 INFO L93 Difference]: Finished difference Result 2064 states and 2825 transitions. [2023-03-31 01:48:57,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:48:57,772 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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 67 [2023-03-31 01:48:57,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:48:57,779 INFO L225 Difference]: With dead ends: 2064 [2023-03-31 01:48:57,779 INFO L226 Difference]: Without dead ends: 1640 [2023-03-31 01:48:57,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:48:57,782 INFO L413 NwaCegarLoop]: 1226 mSDtfsCounter, 648 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 1295 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 648 SdHoareTripleChecker+Valid, 1963 SdHoareTripleChecker+Invalid, 1351 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 1295 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:48:57,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [648 Valid, 1963 Invalid, 1351 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 1295 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2023-03-31 01:48:57,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1640 states. [2023-03-31 01:48:57,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1640 to 1630. [2023-03-31 01:48:57,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1630 states, 1620 states have (on average 1.3333333333333333) internal successors, (2160), 1626 states have internal predecessors, (2160), 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) [2023-03-31 01:48:57,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1630 states to 1630 states and 2163 transitions. [2023-03-31 01:48:57,858 INFO L78 Accepts]: Start accepts. Automaton has 1630 states and 2163 transitions. Word has length 67 [2023-03-31 01:48:57,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:48:57,858 INFO L495 AbstractCegarLoop]: Abstraction has 1630 states and 2163 transitions. [2023-03-31 01:48:57,858 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 3 states have internal predecessors, (64), 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) [2023-03-31 01:48:57,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1630 states and 2163 transitions. [2023-03-31 01:48:57,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-03-31 01:48:57,861 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:48:57,861 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] [2023-03-31 01:48:57,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:48:57,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:48:57,862 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:48:57,862 INFO L85 PathProgramCache]: Analyzing trace with hash -684205971, now seen corresponding path program 1 times [2023-03-31 01:48:57,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:48:57,863 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313977842] [2023-03-31 01:48:57,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:48:57,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:48:57,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:59,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:48:59,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:48:59,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:48:59,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:48:59,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313977842] [2023-03-31 01:48:59,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313977842] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:48:59,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:48:59,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:48:59,341 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996447797] [2023-03-31 01:48:59,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:48:59,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:48:59,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:48:59,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:48:59,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:48:59,344 INFO L87 Difference]: Start difference. First operand 1630 states and 2163 transitions. Second operand has 6 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-03-31 01:49:04,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:49:04,171 INFO L93 Difference]: Finished difference Result 3356 states and 4622 transitions. [2023-03-31 01:49:04,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:49:04,171 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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 67 [2023-03-31 01:49:04,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:49:04,179 INFO L225 Difference]: With dead ends: 3356 [2023-03-31 01:49:04,179 INFO L226 Difference]: Without dead ends: 2018 [2023-03-31 01:49:04,182 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:49:04,182 INFO L413 NwaCegarLoop]: 605 mSDtfsCounter, 3286 mSDsluCounter, 160 mSDsCounter, 0 mSdLazyCounter, 1421 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3286 SdHoareTripleChecker+Valid, 765 SdHoareTripleChecker+Invalid, 1440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1421 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2023-03-31 01:49:04,183 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3286 Valid, 765 Invalid, 1440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1421 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2023-03-31 01:49:04,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2018 states. [2023-03-31 01:49:04,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2018 to 2010. [2023-03-31 01:49:04,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2010 states, 2000 states have (on average 1.389) internal successors, (2778), 2006 states have internal predecessors, (2778), 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) [2023-03-31 01:49:04,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2010 states to 2010 states and 2781 transitions. [2023-03-31 01:49:04,284 INFO L78 Accepts]: Start accepts. Automaton has 2010 states and 2781 transitions. Word has length 67 [2023-03-31 01:49:04,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:49:04,285 INFO L495 AbstractCegarLoop]: Abstraction has 2010 states and 2781 transitions. [2023-03-31 01:49:04,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.8) internal successors, (64), 4 states have internal predecessors, (64), 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) [2023-03-31 01:49:04,285 INFO L276 IsEmpty]: Start isEmpty. Operand 2010 states and 2781 transitions. [2023-03-31 01:49:04,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-03-31 01:49:04,287 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:49:04,288 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] [2023-03-31 01:49:04,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:49:04,288 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:49:04,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:49:04,289 INFO L85 PathProgramCache]: Analyzing trace with hash -1028635063, now seen corresponding path program 1 times [2023-03-31 01:49:04,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:49:04,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1508844650] [2023-03-31 01:49:04,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:49:04,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:49:04,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:05,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:49:05,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:05,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:49:05,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:49:05,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1508844650] [2023-03-31 01:49:05,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1508844650] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:49:05,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:49:05,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:49:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124421459] [2023-03-31 01:49:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:49:05,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:49:05,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:49:05,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:49:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:49:05,652 INFO L87 Difference]: Start difference. First operand 2010 states and 2781 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-03-31 01:49:10,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:49:10,843 INFO L93 Difference]: Finished difference Result 4051 states and 5710 transitions. [2023-03-31 01:49:10,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:49:10,844 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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 68 [2023-03-31 01:49:10,844 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:49:10,853 INFO L225 Difference]: With dead ends: 4051 [2023-03-31 01:49:10,854 INFO L226 Difference]: Without dead ends: 2815 [2023-03-31 01:49:10,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:49:10,857 INFO L413 NwaCegarLoop]: 1240 mSDtfsCounter, 767 mSDsluCounter, 661 mSDsCounter, 0 mSdLazyCounter, 1258 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 767 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 1269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 1258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:49:10,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [767 Valid, 1901 Invalid, 1269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 1258 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2023-03-31 01:49:10,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2815 states. [2023-03-31 01:49:11,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2815 to 2801. [2023-03-31 01:49:11,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2801 states, 2791 states have (on average 1.372626298817628) internal successors, (3831), 2797 states have internal predecessors, (3831), 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) [2023-03-31 01:49:11,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2801 states to 2801 states and 3834 transitions. [2023-03-31 01:49:11,020 INFO L78 Accepts]: Start accepts. Automaton has 2801 states and 3834 transitions. Word has length 68 [2023-03-31 01:49:11,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:49:11,020 INFO L495 AbstractCegarLoop]: Abstraction has 2801 states and 3834 transitions. [2023-03-31 01:49:11,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 3 states have internal predecessors, (65), 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) [2023-03-31 01:49:11,020 INFO L276 IsEmpty]: Start isEmpty. Operand 2801 states and 3834 transitions. [2023-03-31 01:49:11,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2023-03-31 01:49:11,024 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:49:11,024 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] [2023-03-31 01:49:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:49:11,024 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr5ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:49:11,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:49:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1304454671, now seen corresponding path program 1 times [2023-03-31 01:49:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:49:11,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [398642871] [2023-03-31 01:49:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:49:11,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:49:11,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:12,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:49:12,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:12,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:49:12,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:49:12,613 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [398642871] [2023-03-31 01:49:12,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [398642871] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:49:12,614 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:49:12,614 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:49:12,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702560190] [2023-03-31 01:49:12,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:49:12,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:49:12,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:49:12,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:49:12,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:49:12,615 INFO L87 Difference]: Start difference. First operand 2801 states and 3834 transitions. Second operand has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-03-31 01:49:16,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:49:16,891 INFO L93 Difference]: Finished difference Result 5787 states and 8084 transitions. [2023-03-31 01:49:16,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:49:16,892 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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 68 [2023-03-31 01:49:16,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:49:16,903 INFO L225 Difference]: With dead ends: 5787 [2023-03-31 01:49:16,903 INFO L226 Difference]: Without dead ends: 3425 [2023-03-31 01:49:16,907 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:49:16,908 INFO L413 NwaCegarLoop]: 520 mSDtfsCounter, 2825 mSDsluCounter, 152 mSDsCounter, 0 mSdLazyCounter, 1234 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2825 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1234 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:49:16,908 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2825 Valid, 672 Invalid, 1260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1234 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-03-31 01:49:16,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3425 states. [2023-03-31 01:49:17,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3425 to 3408. [2023-03-31 01:49:17,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3408 states, 3398 states have (on average 1.3887580929958798) internal successors, (4719), 3404 states have internal predecessors, (4719), 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) [2023-03-31 01:49:17,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3408 states to 3408 states and 4722 transitions. [2023-03-31 01:49:17,111 INFO L78 Accepts]: Start accepts. Automaton has 3408 states and 4722 transitions. Word has length 68 [2023-03-31 01:49:17,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:49:17,112 INFO L495 AbstractCegarLoop]: Abstraction has 3408 states and 4722 transitions. [2023-03-31 01:49:17,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.0) internal successors, (65), 4 states have internal predecessors, (65), 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) [2023-03-31 01:49:17,112 INFO L276 IsEmpty]: Start isEmpty. Operand 3408 states and 4722 transitions. [2023-03-31 01:49:17,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-03-31 01:49:17,116 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:49:17,116 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] [2023-03-31 01:49:17,116 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:49:17,116 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:49:17,117 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:49:17,117 INFO L85 PathProgramCache]: Analyzing trace with hash -1534793078, now seen corresponding path program 1 times [2023-03-31 01:49:17,117 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:49:17,117 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072099290] [2023-03-31 01:49:17,117 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:49:17,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:49:17,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:18,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:49:18,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:49:18,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 01:49:18,723 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:49:18,723 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072099290] [2023-03-31 01:49:18,723 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072099290] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:49:18,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:49:18,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:49:18,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148696262] [2023-03-31 01:49:18,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:49:18,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:49:18,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:49:18,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:49:18,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:49:18,726 INFO L87 Difference]: Start difference. First operand 3408 states and 4722 transitions. Second operand has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2023-03-31 01:49:22,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:49:22,581 INFO L93 Difference]: Finished difference Result 8648 states and 12232 transitions. [2023-03-31 01:49:22,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 01:49:22,581 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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 69 [2023-03-31 01:49:22,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:49:22,599 INFO L225 Difference]: With dead ends: 8648 [2023-03-31 01:49:22,599 INFO L226 Difference]: Without dead ends: 5466 [2023-03-31 01:49:22,605 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 01:49:22,605 INFO L413 NwaCegarLoop]: 441 mSDtfsCounter, 2494 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 1033 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2494 SdHoareTripleChecker+Valid, 600 SdHoareTripleChecker+Invalid, 1047 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 1033 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-31 01:49:22,606 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2494 Valid, 600 Invalid, 1047 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 1033 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-31 01:49:22,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5466 states. [2023-03-31 01:49:22,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5466 to 5458. [2023-03-31 01:49:22,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5458 states, 5448 states have (on average 1.413913362701909) internal successors, (7703), 5454 states have internal predecessors, (7703), 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) [2023-03-31 01:49:23,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5458 states to 5458 states and 7706 transitions. [2023-03-31 01:49:23,008 INFO L78 Accepts]: Start accepts. Automaton has 5458 states and 7706 transitions. Word has length 69 [2023-03-31 01:49:23,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:49:23,009 INFO L495 AbstractCegarLoop]: Abstraction has 5458 states and 7706 transitions. [2023-03-31 01:49:23,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 13.2) internal successors, (66), 4 states have internal predecessors, (66), 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) [2023-03-31 01:49:23,009 INFO L276 IsEmpty]: Start isEmpty. Operand 5458 states and 7706 transitions. [2023-03-31 01:49:23,017 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2023-03-31 01:49:23,018 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:49:23,018 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] [2023-03-31 01:49:23,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:49:23,019 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr6ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2023-03-31 01:49:23,019 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:49:23,019 INFO L85 PathProgramCache]: Analyzing trace with hash 2027215704, now seen corresponding path program 1 times [2023-03-31 01:49:23,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:49:23,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [48242751] [2023-03-31 01:49:23,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:49:23,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:49:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat