/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/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-04-02 05:12:25,856 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-04-02 05:12:25,858 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-04-02 05:12:25,897 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-04-02 05:12:25,898 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-04-02 05:12:25,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-04-02 05:12:25,903 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-04-02 05:12:25,905 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-04-02 05:12:25,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-04-02 05:12:25,911 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-04-02 05:12:25,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-04-02 05:12:25,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-04-02 05:12:25,914 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-04-02 05:12:25,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-04-02 05:12:25,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-04-02 05:12:25,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-04-02 05:12:25,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-04-02 05:12:25,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-04-02 05:12:25,922 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-04-02 05:12:25,926 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-04-02 05:12:25,927 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-04-02 05:12:25,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-04-02 05:12:25,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-04-02 05:12:25,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-04-02 05:12:25,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-04-02 05:12:25,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-04-02 05:12:25,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-04-02 05:12:25,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-04-02 05:12:25,944 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-04-02 05:12:25,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-04-02 05:12:25,944 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-04-02 05:12:25,945 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-04-02 05:12:25,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-04-02 05:12:25,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-04-02 05:12:25,947 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-04-02 05:12:25,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-04-02 05:12:25,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-04-02 05:12:25,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-04-02 05:12:25,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-04-02 05:12:25,949 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-04-02 05:12:25,950 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-04-02 05:12:25,951 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 05:12:25,981 INFO L113 SettingsManager]: Loading preferences was successful [2023-04-02 05:12:25,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-04-02 05:12:25,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-04-02 05:12:25,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-04-02 05:12:25,983 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-04-02 05:12:25,983 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-04-02 05:12:25,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-04-02 05:12:25,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-04-02 05:12:25,984 INFO L138 SettingsManager]: * Use SBE=true [2023-04-02 05:12:25,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-04-02 05:12:25,985 INFO L138 SettingsManager]: * sizeof long=4 [2023-04-02 05:12:25,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-04-02 05:12:25,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-04-02 05:12:25,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-04-02 05:12:25,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-04-02 05:12:25,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-04-02 05:12:25,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-04-02 05:12:25,986 INFO L138 SettingsManager]: * sizeof long double=12 [2023-04-02 05:12:25,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-04-02 05:12:25,986 INFO L138 SettingsManager]: * Use constant arrays=true [2023-04-02 05:12:25,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-04-02 05:12:25,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-04-02 05:12:25,987 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-04-02 05:12:25,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-04-02 05:12:25,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:12:25,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-04-02 05:12:25,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-04-02 05:12:25,987 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-04-02 05:12:25,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-04-02 05:12:25,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-04-02 05:12:25,988 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-04-02 05:12:25,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-04-02 05:12:25,988 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-04-02 05:12:25,988 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-04-02 05:12:25,988 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-04-02 05:12:25,988 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-04-02 05:12:26,246 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-04-02 05:12:26,269 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-04-02 05:12:26,271 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-04-02 05:12:26,273 INFO L271 PluginConnector]: Initializing CDTParser... [2023-04-02 05:12:26,273 INFO L275 PluginConnector]: CDTParser initialized [2023-04-02 05:12:26,274 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c [2023-04-02 05:12:27,506 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-04-02 05:12:27,726 INFO L351 CDTParser]: Found 1 translation units. [2023-04-02 05:12:27,726 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c [2023-04-02 05:12:27,736 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1d43dad2/357d2a75073d45d984bdd2fec37e6617/FLAG46993d3b2 [2023-04-02 05:12:27,752 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f1d43dad2/357d2a75073d45d984bdd2fec37e6617 [2023-04-02 05:12:27,754 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-04-02 05:12:27,756 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-04-02 05:12:27,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-04-02 05:12:27,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-04-02 05:12:27,762 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-04-02 05:12:27,763 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:12:27" (1/1) ... [2023-04-02 05:12:27,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4395b4db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:27, skipping insertion in model container [2023-04-02 05:12:27,764 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.04 05:12:27" (1/1) ... [2023-04-02 05:12:27,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-04-02 05:12:27,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-04-02 05:12:27,987 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/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c[12779,12792] [2023-04-02 05:12:27,991 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:12:28,000 INFO L203 MainTranslator]: Completed pre-run [2023-04-02 05:12:28,054 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/pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c[12779,12792] [2023-04-02 05:12:28,054 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-04-02 05:12:28,067 INFO L208 MainTranslator]: Completed translation [2023-04-02 05:12:28,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28 WrapperNode [2023-04-02 05:12:28,068 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-04-02 05:12:28,069 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-04-02 05:12:28,069 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-04-02 05:12:28,069 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-04-02 05:12:28,077 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (1/1) ... [2023-04-02 05:12:28,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (1/1) ... [2023-04-02 05:12:28,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (1/1) ... [2023-04-02 05:12:28,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (1/1) ... [2023-04-02 05:12:28,096 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (1/1) ... [2023-04-02 05:12:28,124 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (1/1) ... [2023-04-02 05:12:28,126 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (1/1) ... [2023-04-02 05:12:28,128 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (1/1) ... [2023-04-02 05:12:28,132 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-04-02 05:12:28,137 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-04-02 05:12:28,137 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-04-02 05:12:28,137 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-04-02 05:12:28,138 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (1/1) ... [2023-04-02 05:12:28,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-04-02 05:12:28,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:12:28,176 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 05:12:28,185 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 05:12:28,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-04-02 05:12:28,217 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-04-02 05:12:28,220 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-04-02 05:12:28,220 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-04-02 05:12:28,220 INFO L138 BoogieDeclarations]: Found implementation of procedure node1 [2023-04-02 05:12:28,221 INFO L138 BoogieDeclarations]: Found implementation of procedure node2 [2023-04-02 05:12:28,221 INFO L138 BoogieDeclarations]: Found implementation of procedure node3 [2023-04-02 05:12:28,222 INFO L138 BoogieDeclarations]: Found implementation of procedure node4 [2023-04-02 05:12:28,222 INFO L138 BoogieDeclarations]: Found implementation of procedure node5 [2023-04-02 05:12:28,222 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2023-04-02 05:12:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2023-04-02 05:12:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-04-02 05:12:28,225 INFO L138 BoogieDeclarations]: Found implementation of procedure assert [2023-04-02 05:12:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-04-02 05:12:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-04-02 05:12:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-04-02 05:12:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-04-02 05:12:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-04-02 05:12:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-04-02 05:12:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-04-02 05:12:28,226 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure node5 [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-04-02 05:12:28,227 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-04-02 05:12:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-04-02 05:12:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-04-02 05:12:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-04-02 05:12:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-04-02 05:12:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-04-02 05:12:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-04-02 05:12:28,228 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-04-02 05:12:28,385 INFO L236 CfgBuilder]: Building ICFG [2023-04-02 05:12:28,388 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-04-02 05:12:28,948 INFO L277 CfgBuilder]: Performing block encoding [2023-04-02 05:12:28,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-04-02 05:12:28,959 INFO L302 CfgBuilder]: Removed 1 assume(true) statements. [2023-04-02 05:12:28,961 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:12:28 BoogieIcfgContainer [2023-04-02 05:12:28,962 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-04-02 05:12:28,964 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-04-02 05:12:28,964 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-04-02 05:12:28,971 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-04-02 05:12:28,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.04 05:12:27" (1/3) ... [2023-04-02 05:12:28,972 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8849f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:12:28, skipping insertion in model container [2023-04-02 05:12:28,972 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.04 05:12:28" (2/3) ... [2023-04-02 05:12:28,973 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c8849f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.04 05:12:28, skipping insertion in model container [2023-04-02 05:12:28,973 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.04 05:12:28" (3/3) ... [2023-04-02 05:12:28,974 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.ufo.UNBOUNDED.pals.c [2023-04-02 05:12:28,992 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-04-02 05:12:28,993 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-04-02 05:12:29,034 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-04-02 05:12:29,039 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;@1b8ed661, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-04-02 05:12:29,039 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-04-02 05:12:29,043 INFO L276 IsEmpty]: Start isEmpty. Operand has 140 states, 116 states have (on average 1.6551724137931034) internal successors, (192), 118 states have internal predecessors, (192), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-04-02 05:12:29,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2023-04-02 05:12:29,052 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:12:29,053 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] [2023-04-02 05:12:29,054 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:12:29,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:12:29,058 INFO L85 PathProgramCache]: Analyzing trace with hash 522266175, now seen corresponding path program 1 times [2023-04-02 05:12:29,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:12:29,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440725058] [2023-04-02 05:12:29,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:12:29,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:12:29,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:29,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:12:29,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:29,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:12:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:29,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-04-02 05:12:29,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2023-04-02 05:12:29,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-04-02 05:12:29,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:29,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-04-02 05:12:30,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:30,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-04-02 05:12:30,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-04-02 05:12:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:30,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2023-04-02 05:12:30,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:30,072 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 05:12:30,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:12:30,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440725058] [2023-04-02 05:12:30,073 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440725058] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:12:30,073 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:12:30,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-04-02 05:12:30,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614877366] [2023-04-02 05:12:30,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:12:30,079 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-04-02 05:12:30,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:12:30,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-04-02 05:12:30,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2023-04-02 05:12:30,128 INFO L87 Difference]: Start difference. First operand has 140 states, 116 states have (on average 1.6551724137931034) internal successors, (192), 118 states have internal predecessors, (192), 11 states have call successors, (11), 11 states have call predecessors, (11), 11 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:12:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:12:32,056 INFO L93 Difference]: Finished difference Result 239 states and 358 transitions. [2023-04-02 05:12:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-04-02 05:12:32,059 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 67 [2023-04-02 05:12:32,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:12:32,066 INFO L225 Difference]: With dead ends: 239 [2023-04-02 05:12:32,066 INFO L226 Difference]: Without dead ends: 141 [2023-04-02 05:12:32,069 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=125, Invalid=381, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:12:32,072 INFO L413 NwaCegarLoop]: 26 mSDtfsCounter, 511 mSDsluCounter, 118 mSDsCounter, 0 mSdLazyCounter, 1512 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 518 SdHoareTripleChecker+Valid, 144 SdHoareTripleChecker+Invalid, 1566 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:12:32,073 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [518 Valid, 144 Invalid, 1566 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1512 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:12:32,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-04-02 05:12:32,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 135. [2023-04-02 05:12:32,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 135 states, 113 states have (on average 1.3539823008849559) internal successors, (153), 114 states have internal predecessors, (153), 11 states have call successors, (11), 11 states have call predecessors, (11), 10 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2023-04-02 05:12:32,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 174 transitions. [2023-04-02 05:12:32,127 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 174 transitions. Word has length 67 [2023-04-02 05:12:32,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:12:32,127 INFO L495 AbstractCegarLoop]: Abstraction has 135 states and 174 transitions. [2023-04-02 05:12:32,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 7 states have internal predecessors, (47), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:12:32,128 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 174 transitions. [2023-04-02 05:12:32,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2023-04-02 05:12:32,131 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:12:32,131 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:12:32,131 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-04-02 05:12:32,131 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:12:32,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:12:32,132 INFO L85 PathProgramCache]: Analyzing trace with hash 1733385975, now seen corresponding path program 1 times [2023-04-02 05:12:32,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:12:32,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91476648] [2023-04-02 05:12:32,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:12:32,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:12:32,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:32,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:12:32,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:12:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:32,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:12:32,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:32,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:12:32,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:32,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:12:32,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:32,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:12:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:32,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:12:32,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:12:32,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:33,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:12:33,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:33,021 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 05:12:33,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:12:33,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91476648] [2023-04-02 05:12:33,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91476648] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:12:33,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:12:33,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:12:33,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063928611] [2023-04-02 05:12:33,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:12:33,024 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:12:33,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:12:33,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:12:33,025 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:12:33,025 INFO L87 Difference]: Start difference. First operand 135 states and 174 transitions. Second operand has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 13 states have internal predecessors, (78), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:12:40,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:12:40,966 INFO L93 Difference]: Finished difference Result 1174 states and 1682 transitions. [2023-04-02 05:12:40,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 94 states. [2023-04-02 05:12:40,967 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 13 states have internal predecessors, (78), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 98 [2023-04-02 05:12:40,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:12:40,979 INFO L225 Difference]: With dead ends: 1174 [2023-04-02 05:12:40,980 INFO L226 Difference]: Without dead ends: 1089 [2023-04-02 05:12:40,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 106 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3942 ImplicationChecksByTransitivity, 5.1s TimeCoverageRelationStatistics Valid=2140, Invalid=9416, Unknown=0, NotChecked=0, Total=11556 [2023-04-02 05:12:40,991 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 4985 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 2695 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4997 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 3148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2695 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:12:40,992 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4997 Valid, 179 Invalid, 3148 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2695 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-04-02 05:12:40,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1089 states. [2023-04-02 05:12:41,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1089 to 1003. [2023-04-02 05:12:41,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1003 states, 825 states have (on average 1.5127272727272727) internal successors, (1248), 842 states have internal predecessors, (1248), 81 states have call successors, (81), 81 states have call predecessors, (81), 96 states have return successors, (140), 80 states have call predecessors, (140), 80 states have call successors, (140) [2023-04-02 05:12:41,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1003 states to 1003 states and 1469 transitions. [2023-04-02 05:12:41,128 INFO L78 Accepts]: Start accepts. Automaton has 1003 states and 1469 transitions. Word has length 98 [2023-04-02 05:12:41,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:12:41,129 INFO L495 AbstractCegarLoop]: Abstraction has 1003 states and 1469 transitions. [2023-04-02 05:12:41,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.105263157894737) internal successors, (78), 13 states have internal predecessors, (78), 3 states have call successors, (11), 8 states have call predecessors, (11), 8 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:12:41,129 INFO L276 IsEmpty]: Start isEmpty. Operand 1003 states and 1469 transitions. [2023-04-02 05:12:41,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-04-02 05:12:41,133 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:12:41,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:12:41,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-04-02 05:12:41,134 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:12:41,134 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:12:41,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1481829726, now seen corresponding path program 1 times [2023-04-02 05:12:41,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:12:41,134 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [866212257] [2023-04-02 05:12:41,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:12:41,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:12:41,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:12:41,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:12:41,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:12:41,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:12:41,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:12:41,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:12:41,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:12:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:12:41,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:12:41,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:41,866 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 05:12:41,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:12:41,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [866212257] [2023-04-02 05:12:41,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [866212257] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:12:41,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:12:41,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2023-04-02 05:12:41,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [177184822] [2023-04-02 05:12:41,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:12:41,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2023-04-02 05:12:41,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:12:41,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2023-04-02 05:12:41,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2023-04-02 05:12:41,871 INFO L87 Difference]: Start difference. First operand 1003 states and 1469 transitions. Second operand has 18 states, 16 states have (on average 4.9375) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:12:43,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:12:43,976 INFO L93 Difference]: Finished difference Result 1190 states and 1738 transitions. [2023-04-02 05:12:43,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-04-02 05:12:43,977 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 4.9375) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 99 [2023-04-02 05:12:43,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:12:43,987 INFO L225 Difference]: With dead ends: 1190 [2023-04-02 05:12:43,987 INFO L226 Difference]: Without dead ends: 1188 [2023-04-02 05:12:43,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=167, Invalid=703, Unknown=0, NotChecked=0, Total=870 [2023-04-02 05:12:43,994 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 536 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 544 SdHoareTripleChecker+Valid, 301 SdHoareTripleChecker+Invalid, 2133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:12:43,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [544 Valid, 301 Invalid, 2133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:12:43,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1188 states. [2023-04-02 05:12:44,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1188 to 1057. [2023-04-02 05:12:44,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1057 states, 861 states have (on average 1.4912891986062717) internal successors, (1284), 884 states have internal predecessors, (1284), 87 states have call successors, (87), 87 states have call predecessors, (87), 108 states have return successors, (152), 86 states have call predecessors, (152), 86 states have call successors, (152) [2023-04-02 05:12:44,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1057 states to 1057 states and 1523 transitions. [2023-04-02 05:12:44,125 INFO L78 Accepts]: Start accepts. Automaton has 1057 states and 1523 transitions. Word has length 99 [2023-04-02 05:12:44,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:12:44,127 INFO L495 AbstractCegarLoop]: Abstraction has 1057 states and 1523 transitions. [2023-04-02 05:12:44,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 4.9375) internal successors, (79), 9 states have internal predecessors, (79), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:12:44,128 INFO L276 IsEmpty]: Start isEmpty. Operand 1057 states and 1523 transitions. [2023-04-02 05:12:44,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2023-04-02 05:12:44,132 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:12:44,132 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:12:44,132 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-04-02 05:12:44,132 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:12:44,133 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:12:44,133 INFO L85 PathProgramCache]: Analyzing trace with hash -789283281, now seen corresponding path program 1 times [2023-04-02 05:12:44,133 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:12:44,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839944596] [2023-04-02 05:12:44,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:12:44,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:12:44,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:12:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:12:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:12:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:12:44,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:12:44,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:12:44,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:12:44,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:12:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:12:44,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:44,623 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 05:12:44,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:12:44,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839944596] [2023-04-02 05:12:44,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839944596] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:12:44,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:12:44,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:12:44,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016219968] [2023-04-02 05:12:44,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:12:44,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:12:44,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:12:44,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:12:44,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:12:44,626 INFO L87 Difference]: Start difference. First operand 1057 states and 1523 transitions. Second operand has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:12:46,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:12:46,731 INFO L93 Difference]: Finished difference Result 3850 states and 5598 transitions. [2023-04-02 05:12:46,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-04-02 05:12:46,731 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 100 [2023-04-02 05:12:46,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:12:46,748 INFO L225 Difference]: With dead ends: 3850 [2023-04-02 05:12:46,748 INFO L226 Difference]: Without dead ends: 2843 [2023-04-02 05:12:46,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2023-04-02 05:12:46,759 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 1287 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 995 mSolverCounterSat, 71 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1294 SdHoareTripleChecker+Valid, 91 SdHoareTripleChecker+Invalid, 1066 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 71 IncrementalHoareTripleChecker+Valid, 995 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:12:46,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1294 Valid, 91 Invalid, 1066 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [71 Valid, 995 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:12:46,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2843 states. [2023-04-02 05:12:47,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2843 to 2642. [2023-04-02 05:12:47,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 2134 states have (on average 1.4971883786316775) internal successors, (3195), 2191 states have internal predecessors, (3195), 226 states have call successors, (226), 226 states have call predecessors, (226), 281 states have return successors, (441), 225 states have call predecessors, (441), 225 states have call successors, (441) [2023-04-02 05:12:47,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 3862 transitions. [2023-04-02 05:12:47,099 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 3862 transitions. Word has length 100 [2023-04-02 05:12:47,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:12:47,099 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 3862 transitions. [2023-04-02 05:12:47,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.2727272727272725) internal successors, (80), 5 states have internal predecessors, (80), 3 states have call successors, (11), 8 states have call predecessors, (11), 4 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-04-02 05:12:47,100 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 3862 transitions. [2023-04-02 05:12:47,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:12:47,102 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:12:47,102 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:12:47,103 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-04-02 05:12:47,103 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:12:47,103 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:12:47,103 INFO L85 PathProgramCache]: Analyzing trace with hash 723028559, now seen corresponding path program 1 times [2023-04-02 05:12:47,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:12:47,104 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942904642] [2023-04-02 05:12:47,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:12:47,104 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:12:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:12:47,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:12:47,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:12:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:12:47,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:12:47,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:12:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:12:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:12:47,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:12:47,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:47,534 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 05:12:47,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:12:47,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942904642] [2023-04-02 05:12:47,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942904642] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:12:47,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:12:47,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:12:47,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80732559] [2023-04-02 05:12:47,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:12:47,537 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:12:47,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:12:47,538 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:12:47,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:12:47,538 INFO L87 Difference]: Start difference. First operand 2642 states and 3862 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:12:50,349 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:12:50,350 INFO L93 Difference]: Finished difference Result 6647 states and 9616 transitions. [2023-04-02 05:12:50,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:12:50,351 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 101 [2023-04-02 05:12:50,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:12:50,369 INFO L225 Difference]: With dead ends: 6647 [2023-04-02 05:12:50,369 INFO L226 Difference]: Without dead ends: 4055 [2023-04-02 05:12:50,377 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 138 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:12:50,378 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1886 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 874 mSolverCounterSat, 195 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1886 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1069 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 874 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:12:50,378 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1886 Valid, 66 Invalid, 1069 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 874 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:12:50,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4055 states. [2023-04-02 05:12:50,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4055 to 2763. [2023-04-02 05:12:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2763 states, 2228 states have (on average 1.4955116696588868) internal successors, (3332), 2294 states have internal predecessors, (3332), 235 states have call successors, (235), 235 states have call predecessors, (235), 299 states have return successors, (464), 233 states have call predecessors, (464), 234 states have call successors, (464) [2023-04-02 05:12:50,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2763 states to 2763 states and 4031 transitions. [2023-04-02 05:12:50,723 INFO L78 Accepts]: Start accepts. Automaton has 2763 states and 4031 transitions. Word has length 101 [2023-04-02 05:12:50,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:12:50,724 INFO L495 AbstractCegarLoop]: Abstraction has 2763 states and 4031 transitions. [2023-04-02 05:12:50,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:12:50,724 INFO L276 IsEmpty]: Start isEmpty. Operand 2763 states and 4031 transitions. [2023-04-02 05:12:50,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:12:50,726 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:12:50,727 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:12:50,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-04-02 05:12:50,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:12:50,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:12:50,727 INFO L85 PathProgramCache]: Analyzing trace with hash -358014430, now seen corresponding path program 1 times [2023-04-02 05:12:50,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:12:50,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578409635] [2023-04-02 05:12:50,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:12:50,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:12:50,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:50,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:12:50,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:12:50,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:51,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:12:51,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:51,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:12:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:51,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:12:51,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:51,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:12:51,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:51,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:12:51,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:51,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:12:51,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:51,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:12:51,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:51,165 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 05:12:51,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:12:51,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578409635] [2023-04-02 05:12:51,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578409635] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:12:51,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:12:51,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:12:51,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595646849] [2023-04-02 05:12:51,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:12:51,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:12:51,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:12:51,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:12:51,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:12:51,167 INFO L87 Difference]: Start difference. First operand 2763 states and 4031 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:12:53,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:12:53,818 INFO L93 Difference]: Finished difference Result 5944 states and 8514 transitions. [2023-04-02 05:12:53,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:12:53,818 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 101 [2023-04-02 05:12:53,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:12:53,832 INFO L225 Difference]: With dead ends: 5944 [2023-04-02 05:12:53,832 INFO L226 Difference]: Without dead ends: 3307 [2023-04-02 05:12:53,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:12:53,839 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1512 mSDsluCounter, 45 mSDsCounter, 0 mSdLazyCounter, 963 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1512 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 1084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:12:53,839 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1512 Valid, 63 Invalid, 1084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 963 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-04-02 05:12:53,842 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3307 states. [2023-04-02 05:12:54,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3307 to 2921. [2023-04-02 05:12:54,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2921 states, 2358 states have (on average 1.4961832061068703) internal successors, (3528), 2428 states have internal predecessors, (3528), 247 states have call successors, (247), 247 states have call predecessors, (247), 315 states have return successors, (482), 245 states have call predecessors, (482), 246 states have call successors, (482) [2023-04-02 05:12:54,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2921 states to 2921 states and 4257 transitions. [2023-04-02 05:12:54,184 INFO L78 Accepts]: Start accepts. Automaton has 2921 states and 4257 transitions. Word has length 101 [2023-04-02 05:12:54,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:12:54,184 INFO L495 AbstractCegarLoop]: Abstraction has 2921 states and 4257 transitions. [2023-04-02 05:12:54,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:12:54,185 INFO L276 IsEmpty]: Start isEmpty. Operand 2921 states and 4257 transitions. [2023-04-02 05:12:54,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:12:54,187 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:12:54,187 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:12:54,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-04-02 05:12:54,188 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:12:54,188 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:12:54,188 INFO L85 PathProgramCache]: Analyzing trace with hash -568174806, now seen corresponding path program 1 times [2023-04-02 05:12:54,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:12:54,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546272476] [2023-04-02 05:12:54,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:12:54,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:12:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:12:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:12:54,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:12:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:12:54,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:12:54,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:12:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:12:54,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:12:54,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:12:54,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:54,589 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 05:12:54,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:12:54,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546272476] [2023-04-02 05:12:54,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546272476] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:12:54,590 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:12:54,590 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:12:54,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570898691] [2023-04-02 05:12:54,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:12:54,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:12:54,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:12:54,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:12:54,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:12:54,592 INFO L87 Difference]: Start difference. First operand 2921 states and 4257 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:12:57,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:12:57,172 INFO L93 Difference]: Finished difference Result 6467 states and 9277 transitions. [2023-04-02 05:12:57,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:12:57,173 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 101 [2023-04-02 05:12:57,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:12:57,188 INFO L225 Difference]: With dead ends: 6467 [2023-04-02 05:12:57,188 INFO L226 Difference]: Without dead ends: 3777 [2023-04-02 05:12:57,195 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:12:57,196 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1976 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 862 mSolverCounterSat, 193 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1976 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 1055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 193 IncrementalHoareTripleChecker+Valid, 862 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:12:57,196 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1976 Valid, 62 Invalid, 1055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [193 Valid, 862 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:12:57,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3777 states. [2023-04-02 05:12:57,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3777 to 3088. [2023-04-02 05:12:57,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3088 states, 2492 states have (on average 1.4967897271268058) internal successors, (3730), 2575 states have internal predecessors, (3730), 257 states have call successors, (257), 257 states have call predecessors, (257), 338 states have return successors, (510), 255 states have call predecessors, (510), 256 states have call successors, (510) [2023-04-02 05:12:57,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3088 states to 3088 states and 4497 transitions. [2023-04-02 05:12:57,574 INFO L78 Accepts]: Start accepts. Automaton has 3088 states and 4497 transitions. Word has length 101 [2023-04-02 05:12:57,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:12:57,575 INFO L495 AbstractCegarLoop]: Abstraction has 3088 states and 4497 transitions. [2023-04-02 05:12:57,575 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:12:57,575 INFO L276 IsEmpty]: Start isEmpty. Operand 3088 states and 4497 transitions. [2023-04-02 05:12:57,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2023-04-02 05:12:57,578 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:12:57,578 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:12:57,579 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-04-02 05:12:57,579 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:12:57,579 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:12:57,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1315341204, now seen corresponding path program 1 times [2023-04-02 05:12:57,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:12:57,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047577981] [2023-04-02 05:12:57,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:12:57,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:12:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:12:57,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:12:57,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:12:57,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:12:57,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:12:57,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2023-04-02 05:12:57,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2023-04-02 05:12:57,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2023-04-02 05:12:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2023-04-02 05:12:57,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:12:57,953 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 05:12:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:12:57,954 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047577981] [2023-04-02 05:12:57,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047577981] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:12:57,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:12:57,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-04-02 05:12:57,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994422083] [2023-04-02 05:12:57,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:12:57,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-04-02 05:12:57,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:12:57,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-04-02 05:12:57,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-04-02 05:12:57,955 INFO L87 Difference]: Start difference. First operand 3088 states and 4497 transitions. Second operand has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:13:00,510 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:13:00,510 INFO L93 Difference]: Finished difference Result 8007 states and 11571 transitions. [2023-04-02 05:13:00,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2023-04-02 05:13:00,511 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) Word has length 101 [2023-04-02 05:13:00,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:13:00,530 INFO L225 Difference]: With dead ends: 8007 [2023-04-02 05:13:00,530 INFO L226 Difference]: Without dead ends: 5020 [2023-04-02 05:13:00,536 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=292, Invalid=830, Unknown=0, NotChecked=0, Total=1122 [2023-04-02 05:13:00,537 INFO L413 NwaCegarLoop]: 18 mSDtfsCounter, 1574 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 931 mSolverCounterSat, 152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 66 SdHoareTripleChecker+Invalid, 1083 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 152 IncrementalHoareTripleChecker+Valid, 931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:13:00,537 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 66 Invalid, 1083 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [152 Valid, 931 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:13:00,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5020 states. [2023-04-02 05:13:00,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5020 to 3356. [2023-04-02 05:13:00,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3356 states, 2712 states have (on average 1.5066371681415929) internal successors, (4086), 2807 states have internal predecessors, (4086), 275 states have call successors, (275), 275 states have call predecessors, (275), 368 states have return successors, (558), 273 states have call predecessors, (558), 274 states have call successors, (558) [2023-04-02 05:13:00,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3356 states to 3356 states and 4919 transitions. [2023-04-02 05:13:00,975 INFO L78 Accepts]: Start accepts. Automaton has 3356 states and 4919 transitions. Word has length 101 [2023-04-02 05:13:00,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:13:00,976 INFO L495 AbstractCegarLoop]: Abstraction has 3356 states and 4919 transitions. [2023-04-02 05:13:00,976 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.4) internal successors, (81), 9 states have internal predecessors, (81), 5 states have call successors, (11), 9 states have call predecessors, (11), 4 states have return successors, (9), 4 states have call predecessors, (9), 5 states have call successors, (9) [2023-04-02 05:13:00,976 INFO L276 IsEmpty]: Start isEmpty. Operand 3356 states and 4919 transitions. [2023-04-02 05:13:00,978 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2023-04-02 05:13:00,978 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:13:00,978 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-04-02 05:13:00,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-04-02 05:13:00,978 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:13:00,979 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:13:00,979 INFO L85 PathProgramCache]: Analyzing trace with hash -443147479, now seen corresponding path program 1 times [2023-04-02 05:13:00,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:13:00,979 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1401048899] [2023-04-02 05:13:00,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:13:00,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:13:01,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:13:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:13:01,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:13:01,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:13:01,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2023-04-02 05:13:01,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2023-04-02 05:13:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2023-04-02 05:13:01,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2023-04-02 05:13:01,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2023-04-02 05:13:01,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:01,380 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 05:13:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:13:01,380 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1401048899] [2023-04-02 05:13:01,380 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1401048899] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:13:01,380 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:13:01,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2023-04-02 05:13:01,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83737253] [2023-04-02 05:13:01,381 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:13:01,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-04-02 05:13:01,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:13:01,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-04-02 05:13:01,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2023-04-02 05:13:01,383 INFO L87 Difference]: Start difference. First operand 3356 states and 4919 transitions. Second operand has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:13:03,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:13:03,121 INFO L93 Difference]: Finished difference Result 7098 states and 10307 transitions. [2023-04-02 05:13:03,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-04-02 05:13:03,129 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 102 [2023-04-02 05:13:03,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:13:03,156 INFO L225 Difference]: With dead ends: 7098 [2023-04-02 05:13:03,156 INFO L226 Difference]: Without dead ends: 4785 [2023-04-02 05:13:03,162 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=164, Invalid=436, Unknown=0, NotChecked=0, Total=600 [2023-04-02 05:13:03,164 INFO L413 NwaCegarLoop]: 36 mSDtfsCounter, 867 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 924 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 873 SdHoareTripleChecker+Valid, 90 SdHoareTripleChecker+Invalid, 982 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 924 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:13:03,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [873 Valid, 90 Invalid, 982 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 924 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2023-04-02 05:13:03,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4785 states. [2023-04-02 05:13:03,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4785 to 3861. [2023-04-02 05:13:03,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3861 states, 3103 states have (on average 1.4901708024492426) internal successors, (4624), 3182 states have internal predecessors, (4624), 340 states have call successors, (340), 340 states have call predecessors, (340), 417 states have return successors, (642), 338 states have call predecessors, (642), 339 states have call successors, (642) [2023-04-02 05:13:03,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3861 states to 3861 states and 5606 transitions. [2023-04-02 05:13:03,692 INFO L78 Accepts]: Start accepts. Automaton has 3861 states and 5606 transitions. Word has length 102 [2023-04-02 05:13:03,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:13:03,693 INFO L495 AbstractCegarLoop]: Abstraction has 3861 states and 5606 transitions. [2023-04-02 05:13:03,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.454545454545454) internal successors, (82), 5 states have internal predecessors, (82), 3 states have call successors, (11), 8 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-04-02 05:13:03,694 INFO L276 IsEmpty]: Start isEmpty. Operand 3861 states and 5606 transitions. [2023-04-02 05:13:03,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 05:13:03,696 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:13:03,697 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:03,697 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-04-02 05:13:03,697 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:13:03,697 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:13:03,697 INFO L85 PathProgramCache]: Analyzing trace with hash 1136101563, now seen corresponding path program 1 times [2023-04-02 05:13:03,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:13:03,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1157854035] [2023-04-02 05:13:03,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:13:03,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:13:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:13:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:13:04,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:13:04,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:13:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:13:04,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:13:04,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:13:04,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:13:04,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:13:04,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:13:04,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:13:04,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:13:04,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:13:04,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:13:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 05:13:04,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 05:13:04,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:04,528 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2023-04-02 05:13:04,529 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:13:04,529 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1157854035] [2023-04-02 05:13:04,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1157854035] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:13:04,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:13:04,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:13:04,529 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920981166] [2023-04-02 05:13:04,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:13:04,530 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:13:04,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:13:04,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:13:04,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:13:04,531 INFO L87 Difference]: Start difference. First operand 3861 states and 5606 transitions. Second operand has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 13 states have internal predecessors, (93), 4 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:13:16,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:13:16,796 INFO L93 Difference]: Finished difference Result 9228 states and 13301 transitions. [2023-04-02 05:13:16,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2023-04-02 05:13:16,797 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 13 states have internal predecessors, (93), 4 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 151 [2023-04-02 05:13:16,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:13:16,818 INFO L225 Difference]: With dead ends: 9228 [2023-04-02 05:13:16,818 INFO L226 Difference]: Without dead ends: 7301 [2023-04-02 05:13:16,831 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 248 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 173 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12062 ImplicationChecksByTransitivity, 7.9s TimeCoverageRelationStatistics Valid=4059, Invalid=26391, Unknown=0, NotChecked=0, Total=30450 [2023-04-02 05:13:16,831 INFO L413 NwaCegarLoop]: 50 mSDtfsCounter, 5808 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 3968 mSolverCounterSat, 573 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5828 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 4541 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 573 IncrementalHoareTripleChecker+Valid, 3968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-04-02 05:13:16,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5828 Valid, 243 Invalid, 4541 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [573 Valid, 3968 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-04-02 05:13:16,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7301 states. [2023-04-02 05:13:17,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7301 to 6277. [2023-04-02 05:13:17,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6277 states, 5056 states have (on average 1.4972310126582278) internal successors, (7570), 5162 states have internal predecessors, (7570), 558 states have call successors, (558), 558 states have call predecessors, (558), 662 states have return successors, (1036), 556 states have call predecessors, (1036), 557 states have call successors, (1036) [2023-04-02 05:13:17,745 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6277 states to 6277 states and 9164 transitions. [2023-04-02 05:13:17,746 INFO L78 Accepts]: Start accepts. Automaton has 6277 states and 9164 transitions. Word has length 151 [2023-04-02 05:13:17,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:13:17,746 INFO L495 AbstractCegarLoop]: Abstraction has 6277 states and 9164 transitions. [2023-04-02 05:13:17,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.894736842105263) internal successors, (93), 13 states have internal predecessors, (93), 4 states have call successors, (15), 8 states have call predecessors, (15), 8 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2023-04-02 05:13:17,746 INFO L276 IsEmpty]: Start isEmpty. Operand 6277 states and 9164 transitions. [2023-04-02 05:13:17,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 05:13:17,749 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:13:17,750 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:17,750 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-04-02 05:13:17,750 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:13:17,751 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:13:17,751 INFO L85 PathProgramCache]: Analyzing trace with hash 55058574, now seen corresponding path program 1 times [2023-04-02 05:13:17,751 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:13:17,751 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1002021279] [2023-04-02 05:13:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:13:17,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:13:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:13:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:13:18,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:13:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:13:18,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:13:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:13:18,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:13:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:13:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:13:18,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:13:18,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:13:18,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:13:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:13:18,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:13:18,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2023-04-02 05:13:18,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 05:13:18,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:18,568 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2023-04-02 05:13:18,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:13:18,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1002021279] [2023-04-02 05:13:18,569 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1002021279] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:13:18,569 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:13:18,569 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:13:18,569 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1766470906] [2023-04-02 05:13:18,569 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:13:18,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:13:18,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:13:18,570 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:13:18,570 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:13:18,571 INFO L87 Difference]: Start difference. First operand 6277 states and 9164 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 13 states have internal predecessors, (94), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:13:31,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:13:31,210 INFO L93 Difference]: Finished difference Result 19132 states and 27745 transitions. [2023-04-02 05:13:31,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 160 states. [2023-04-02 05:13:31,210 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 13 states have internal predecessors, (94), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 151 [2023-04-02 05:13:31,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:13:31,270 INFO L225 Difference]: With dead ends: 19132 [2023-04-02 05:13:31,270 INFO L226 Difference]: Without dead ends: 13327 [2023-04-02 05:13:31,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 170 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11655 ImplicationChecksByTransitivity, 7.7s TimeCoverageRelationStatistics Valid=3946, Invalid=25466, Unknown=0, NotChecked=0, Total=29412 [2023-04-02 05:13:31,292 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 5236 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 4488 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5255 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 4975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 4488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2023-04-02 05:13:31,292 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5255 Valid, 272 Invalid, 4975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [487 Valid, 4488 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2023-04-02 05:13:31,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13327 states. [2023-04-02 05:13:32,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13327 to 11704. [2023-04-02 05:13:32,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11704 states, 9458 states have (on average 1.5074011418904631) internal successors, (14257), 9639 states have internal predecessors, (14257), 1033 states have call successors, (1033), 1033 states have call predecessors, (1033), 1212 states have return successors, (1903), 1031 states have call predecessors, (1903), 1032 states have call successors, (1903) [2023-04-02 05:13:32,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11704 states to 11704 states and 17193 transitions. [2023-04-02 05:13:32,674 INFO L78 Accepts]: Start accepts. Automaton has 11704 states and 17193 transitions. Word has length 151 [2023-04-02 05:13:32,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:13:32,676 INFO L495 AbstractCegarLoop]: Abstraction has 11704 states and 17193 transitions. [2023-04-02 05:13:32,676 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 13 states have internal predecessors, (94), 4 states have call successors, (13), 8 states have call predecessors, (13), 8 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2023-04-02 05:13:32,676 INFO L276 IsEmpty]: Start isEmpty. Operand 11704 states and 17193 transitions. [2023-04-02 05:13:32,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 05:13:32,681 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:13:32,681 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:32,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-04-02 05:13:32,681 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:13:32,682 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:13:32,682 INFO L85 PathProgramCache]: Analyzing trace with hash -155101802, now seen corresponding path program 1 times [2023-04-02 05:13:32,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:13:32,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406950932] [2023-04-02 05:13:32,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:13:32,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:13:32,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:13:32,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:32,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:13:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:13:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:13:33,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:13:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:13:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:13:33,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:13:33,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:13:33,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:13:33,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:13:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:13:33,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:13:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:13:33,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 05:13:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 05:13:33,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,181 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2023-04-02 05:13:33,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:13:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406950932] [2023-04-02 05:13:33,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406950932] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:13:33,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1860935041] [2023-04-02 05:13:33,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:13:33,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:13:33,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:13:33,185 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:13:33,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-04-02 05:13:33,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:33,409 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 10 conjunts are in the unsatisfiable core [2023-04-02 05:13:33,421 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:13:34,002 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 18 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:13:34,002 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:13:34,351 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2023-04-02 05:13:34,351 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1860935041] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:13:34,351 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:13:34,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 10, 11] total 28 [2023-04-02 05:13:34,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417877067] [2023-04-02 05:13:34,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:13:34,352 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-04-02 05:13:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:13:34,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-04-02 05:13:34,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=101, Invalid=655, Unknown=0, NotChecked=0, Total=756 [2023-04-02 05:13:34,354 INFO L87 Difference]: Start difference. First operand 11704 states and 17193 transitions. Second operand has 28 states, 28 states have (on average 8.75) internal successors, (245), 22 states have internal predecessors, (245), 9 states have call successors, (44), 16 states have call predecessors, (44), 13 states have return successors, (33), 8 states have call predecessors, (33), 9 states have call successors, (33) [2023-04-02 05:13:42,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:13:42,173 INFO L93 Difference]: Finished difference Result 44858 states and 64792 transitions. [2023-04-02 05:13:42,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-04-02 05:13:42,174 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 8.75) internal successors, (245), 22 states have internal predecessors, (245), 9 states have call successors, (44), 16 states have call predecessors, (44), 13 states have return successors, (33), 8 states have call predecessors, (33), 9 states have call successors, (33) Word has length 151 [2023-04-02 05:13:42,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:13:42,295 INFO L225 Difference]: With dead ends: 44858 [2023-04-02 05:13:42,295 INFO L226 Difference]: Without dead ends: 33260 [2023-04-02 05:13:42,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 404 GetRequests, 338 SyntacticMatches, 6 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 4.2s TimeCoverageRelationStatistics Valid=930, Invalid=2852, Unknown=0, NotChecked=0, Total=3782 [2023-04-02 05:13:42,331 INFO L413 NwaCegarLoop]: 17 mSDtfsCounter, 3591 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 1302 mSolverCounterSat, 356 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3594 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 1658 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 356 IncrementalHoareTripleChecker+Valid, 1302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:13:42,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3594 Valid, 77 Invalid, 1658 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [356 Valid, 1302 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-04-02 05:13:42,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33260 states. [2023-04-02 05:13:45,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33260 to 26988. [2023-04-02 05:13:45,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26988 states, 21365 states have (on average 1.4754505031593728) internal successors, (31523), 22351 states have internal predecessors, (31523), 2319 states have call successors, (2319), 2319 states have call predecessors, (2319), 3303 states have return successors, (4933), 2317 states have call predecessors, (4933), 2318 states have call successors, (4933) [2023-04-02 05:13:45,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26988 states to 26988 states and 38775 transitions. [2023-04-02 05:13:45,359 INFO L78 Accepts]: Start accepts. Automaton has 26988 states and 38775 transitions. Word has length 151 [2023-04-02 05:13:45,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:13:45,360 INFO L495 AbstractCegarLoop]: Abstraction has 26988 states and 38775 transitions. [2023-04-02 05:13:45,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 8.75) internal successors, (245), 22 states have internal predecessors, (245), 9 states have call successors, (44), 16 states have call predecessors, (44), 13 states have return successors, (33), 8 states have call predecessors, (33), 9 states have call successors, (33) [2023-04-02 05:13:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 26988 states and 38775 transitions. [2023-04-02 05:13:45,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 05:13:45,366 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:13:45,366 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:13:45,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-04-02 05:13:45,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-04-02 05:13:45,581 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:13:45,582 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:13:45,582 INFO L85 PathProgramCache]: Analyzing trace with hash 1728414208, now seen corresponding path program 1 times [2023-04-02 05:13:45,582 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:13:45,582 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2023111338] [2023-04-02 05:13:45,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:13:45,583 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:13:45,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:13:46,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:13:46,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:13:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:13:46,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:13:46,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:13:46,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:13:46,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:13:46,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:13:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:13:46,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:13:46,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:13:46,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2023-04-02 05:13:46,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2023-04-02 05:13:46,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 05:13:46,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 05:13:46,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:13:46,484 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-02 05:13:46,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:13:46,485 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2023111338] [2023-04-02 05:13:46,485 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2023111338] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:13:46,485 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:13:46,485 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:13:46,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650739921] [2023-04-02 05:13:46,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:13:46,485 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:13:46,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:13:46,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:13:46,487 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:13:46,487 INFO L87 Difference]: Start difference. First operand 26988 states and 38775 transitions. Second operand has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 13 states have internal predecessors, (94), 4 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:14:03,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:03,148 INFO L93 Difference]: Finished difference Result 61700 states and 88120 transitions. [2023-04-02 05:14:03,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 159 states. [2023-04-02 05:14:03,149 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 13 states have internal predecessors, (94), 4 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 151 [2023-04-02 05:14:03,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:03,340 INFO L225 Difference]: With dead ends: 61700 [2023-04-02 05:14:03,340 INFO L226 Difference]: Without dead ends: 47488 [2023-04-02 05:14:03,396 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11409 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=3917, Invalid=25153, Unknown=0, NotChecked=0, Total=29070 [2023-04-02 05:14:03,398 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 4574 mSDsluCounter, 228 mSDsCounter, 0 mSdLazyCounter, 5123 mSolverCounterSat, 422 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4593 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 5545 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 422 IncrementalHoareTripleChecker+Valid, 5123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:03,398 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4593 Valid, 288 Invalid, 5545 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [422 Valid, 5123 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2023-04-02 05:14:03,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47488 states. [2023-04-02 05:14:08,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47488 to 40422. [2023-04-02 05:14:08,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40422 states, 32055 states have (on average 1.4812353766963031) internal successors, (47481), 33593 states have internal predecessors, (47481), 3415 states have call successors, (3415), 3415 states have call predecessors, (3415), 4951 states have return successors, (7361), 3413 states have call predecessors, (7361), 3414 states have call successors, (7361) [2023-04-02 05:14:08,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40422 states to 40422 states and 58257 transitions. [2023-04-02 05:14:08,296 INFO L78 Accepts]: Start accepts. Automaton has 40422 states and 58257 transitions. Word has length 151 [2023-04-02 05:14:08,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:08,296 INFO L495 AbstractCegarLoop]: Abstraction has 40422 states and 58257 transitions. [2023-04-02 05:14:08,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 4.947368421052632) internal successors, (94), 13 states have internal predecessors, (94), 4 states have call successors, (16), 8 states have call predecessors, (16), 8 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2023-04-02 05:14:08,296 INFO L276 IsEmpty]: Start isEmpty. Operand 40422 states and 58257 transitions. [2023-04-02 05:14:08,303 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2023-04-02 05:14:08,303 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:08,304 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:08,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-04-02 05:14:08,304 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:08,304 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:08,304 INFO L85 PathProgramCache]: Analyzing trace with hash 1757916469, now seen corresponding path program 1 times [2023-04-02 05:14:08,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:08,304 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663615823] [2023-04-02 05:14:08,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:08,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:08,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:08,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:08,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:08,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:08,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:14:08,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:08,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:14:08,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:08,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:14:08,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:14:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:14:09,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:14:09,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:14:09,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:14:09,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:14:09,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2023-04-02 05:14:09,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2023-04-02 05:14:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2023-04-02 05:14:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2023-04-02 05:14:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2023-04-02 05:14:09,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:09,161 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2023-04-02 05:14:09,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:09,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663615823] [2023-04-02 05:14:09,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663615823] provided 1 perfect and 0 imperfect interpolant sequences [2023-04-02 05:14:09,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-04-02 05:14:09,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2023-04-02 05:14:09,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1742998394] [2023-04-02 05:14:09,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-04-02 05:14:09,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-04-02 05:14:09,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:09,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-04-02 05:14:09,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2023-04-02 05:14:09,163 INFO L87 Difference]: Start difference. First operand 40422 states and 58257 transitions. Second operand has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:14:27,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:27,250 INFO L93 Difference]: Finished difference Result 103800 states and 148553 transitions. [2023-04-02 05:14:27,251 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 154 states. [2023-04-02 05:14:27,251 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 151 [2023-04-02 05:14:27,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:27,548 INFO L225 Difference]: With dead ends: 103800 [2023-04-02 05:14:27,548 INFO L226 Difference]: Without dead ends: 71960 [2023-04-02 05:14:27,622 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 237 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 164 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10743 ImplicationChecksByTransitivity, 7.4s TimeCoverageRelationStatistics Valid=3738, Invalid=23652, Unknown=0, NotChecked=0, Total=27390 [2023-04-02 05:14:27,622 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 5575 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 5278 mSolverCounterSat, 553 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5594 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 5831 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 553 IncrementalHoareTripleChecker+Valid, 5278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:27,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5594 Valid, 308 Invalid, 5831 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [553 Valid, 5278 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-04-02 05:14:27,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71960 states. [2023-04-02 05:14:34,635 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71960 to 61460. [2023-04-02 05:14:34,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61460 states, 48723 states have (on average 1.481538493114135) internal successors, (72185), 51199 states have internal predecessors, (72185), 5131 states have call successors, (5131), 5131 states have call predecessors, (5131), 7605 states have return successors, (11102), 5129 states have call predecessors, (11102), 5130 states have call successors, (11102) [2023-04-02 05:14:34,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61460 states to 61460 states and 88418 transitions. [2023-04-02 05:14:34,844 INFO L78 Accepts]: Start accepts. Automaton has 61460 states and 88418 transitions. Word has length 151 [2023-04-02 05:14:34,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:34,845 INFO L495 AbstractCegarLoop]: Abstraction has 61460 states and 88418 transitions. [2023-04-02 05:14:34,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 5.105263157894737) internal successors, (97), 13 states have internal predecessors, (97), 4 states have call successors, (14), 8 states have call predecessors, (14), 8 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2023-04-02 05:14:34,845 INFO L276 IsEmpty]: Start isEmpty. Operand 61460 states and 88418 transitions. [2023-04-02 05:14:34,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:14:34,858 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:34,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:34,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-04-02 05:14:34,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:34,859 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:34,859 INFO L85 PathProgramCache]: Analyzing trace with hash -522786243, now seen corresponding path program 1 times [2023-04-02 05:14:34,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:34,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [265193860] [2023-04-02 05:14:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:34,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:34,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:35,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:14:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:14:35,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:14:35,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:14:35,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:14:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:14:35,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:14:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:14:35,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:14:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:14:35,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:14:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:14:35,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:14:35,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 05:14:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,255 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2023-04-02 05:14:35,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:35,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [265193860] [2023-04-02 05:14:35,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [265193860] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:14:35,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [978228818] [2023-04-02 05:14:35,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:35,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:14:35,256 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:14:35,273 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:14:35,274 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-04-02 05:14:35,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:35,470 INFO L262 TraceCheckSpWp]: Trace formula consists of 991 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:14:35,475 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:14:35,694 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 37 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:14:35,694 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:14:35,931 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2023-04-02 05:14:35,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [978228818] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:14:35,932 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:14:35,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 21 [2023-04-02 05:14:35,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039465215] [2023-04-02 05:14:35,932 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:14:35,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2023-04-02 05:14:35,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:14:35,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2023-04-02 05:14:35,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=83, Invalid=337, Unknown=0, NotChecked=0, Total=420 [2023-04-02 05:14:35,934 INFO L87 Difference]: Start difference. First operand 61460 states and 88418 transitions. Second operand has 21 states, 20 states have (on average 9.15) internal successors, (183), 14 states have internal predecessors, (183), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:14:48,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:14:48,572 INFO L93 Difference]: Finished difference Result 151266 states and 215782 transitions. [2023-04-02 05:14:48,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2023-04-02 05:14:48,573 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 9.15) internal successors, (183), 14 states have internal predecessors, (183), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) Word has length 152 [2023-04-02 05:14:48,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:14:49,122 INFO L225 Difference]: With dead ends: 151266 [2023-04-02 05:14:49,122 INFO L226 Difference]: Without dead ends: 89912 [2023-04-02 05:14:49,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 834 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=687, Invalid=2505, Unknown=0, NotChecked=0, Total=3192 [2023-04-02 05:14:49,240 INFO L413 NwaCegarLoop]: 25 mSDtfsCounter, 2131 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 1653 mSolverCounterSat, 118 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2138 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 1771 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 118 IncrementalHoareTripleChecker+Valid, 1653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:14:49,240 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2138 Valid, 135 Invalid, 1771 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [118 Valid, 1653 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-04-02 05:14:49,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89912 states. [2023-04-02 05:14:58,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89912 to 81682. [2023-04-02 05:14:58,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 81682 states, 64218 states have (on average 1.4591547541187828) internal successors, (93704), 67629 states have internal predecessors, (93704), 7027 states have call successors, (7027), 7027 states have call predecessors, (7027), 10436 states have return successors, (15060), 7025 states have call predecessors, (15060), 7026 states have call successors, (15060) [2023-04-02 05:14:58,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81682 states to 81682 states and 115791 transitions. [2023-04-02 05:14:58,948 INFO L78 Accepts]: Start accepts. Automaton has 81682 states and 115791 transitions. Word has length 152 [2023-04-02 05:14:58,948 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-04-02 05:14:58,948 INFO L495 AbstractCegarLoop]: Abstraction has 81682 states and 115791 transitions. [2023-04-02 05:14:58,949 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 9.15) internal successors, (183), 14 states have internal predecessors, (183), 7 states have call successors, (43), 14 states have call predecessors, (43), 10 states have return successors, (37), 7 states have call predecessors, (37), 7 states have call successors, (37) [2023-04-02 05:14:58,949 INFO L276 IsEmpty]: Start isEmpty. Operand 81682 states and 115791 transitions. [2023-04-02 05:14:58,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2023-04-02 05:14:58,958 INFO L187 NwaCegarLoop]: Found error trace [2023-04-02 05:14:58,959 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:14:58,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-04-02 05:14:59,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-04-02 05:14:59,169 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-04-02 05:14:59,169 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-04-02 05:14:59,169 INFO L85 PathProgramCache]: Analyzing trace with hash 910237726, now seen corresponding path program 1 times [2023-04-02 05:14:59,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-04-02 05:14:59,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387181321] [2023-04-02 05:14:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:59,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-04-02 05:14:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-04-02 05:14:59,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-04-02 05:14:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-04-02 05:14:59,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-04-02 05:14:59,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2023-04-02 05:14:59,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2023-04-02 05:14:59,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2023-04-02 05:14:59,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2023-04-02 05:14:59,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2023-04-02 05:14:59,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2023-04-02 05:14:59,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2023-04-02 05:14:59,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2023-04-02 05:14:59,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2023-04-02 05:14:59,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2023-04-02 05:14:59,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2023-04-02 05:14:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2023-04-02 05:14:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,537 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 2 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2023-04-02 05:14:59,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-04-02 05:14:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387181321] [2023-04-02 05:14:59,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387181321] provided 0 perfect and 1 imperfect interpolant sequences [2023-04-02 05:14:59,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342037887] [2023-04-02 05:14:59,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-04-02 05:14:59,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-04-02 05:14:59,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-04-02 05:14:59,539 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-04-02 05:14:59,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-04-02 05:14:59,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-04-02 05:14:59,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 14 conjunts are in the unsatisfiable core [2023-04-02 05:14:59,737 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-04-02 05:14:59,965 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 23 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-04-02 05:14:59,966 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-04-02 05:15:00,384 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 20 proven. 2 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2023-04-02 05:15:00,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342037887] provided 0 perfect and 2 imperfect interpolant sequences [2023-04-02 05:15:00,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-04-02 05:15:00,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 8] total 23 [2023-04-02 05:15:00,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894828343] [2023-04-02 05:15:00,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-04-02 05:15:00,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-04-02 05:15:00,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-04-02 05:15:00,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-04-02 05:15:00,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=418, Unknown=0, NotChecked=0, Total=506 [2023-04-02 05:15:00,387 INFO L87 Difference]: Start difference. First operand 81682 states and 115791 transitions. Second operand has 23 states, 22 states have (on average 8.545454545454545) internal successors, (188), 16 states have internal predecessors, (188), 8 states have call successors, (43), 15 states have call predecessors, (43), 11 states have return successors, (38), 8 states have call predecessors, (38), 8 states have call successors, (38) [2023-04-02 05:15:33,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-04-02 05:15:33,504 INFO L93 Difference]: Finished difference Result 304958 states and 436382 transitions. [2023-04-02 05:15:33,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 97 states. [2023-04-02 05:15:33,505 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 8.545454545454545) internal successors, (188), 16 states have internal predecessors, (188), 8 states have call successors, (43), 15 states have call predecessors, (43), 11 states have return successors, (38), 8 states have call predecessors, (38), 8 states have call successors, (38) Word has length 152 [2023-04-02 05:15:33,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-04-02 05:15:34,714 INFO L225 Difference]: With dead ends: 304958 [2023-04-02 05:15:34,714 INFO L226 Difference]: Without dead ends: 223562 [2023-04-02 05:15:34,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 485 GetRequests, 375 SyntacticMatches, 0 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3981 ImplicationChecksByTransitivity, 6.4s TimeCoverageRelationStatistics Valid=1910, Invalid=10522, Unknown=0, NotChecked=0, Total=12432 [2023-04-02 05:15:34,889 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 3263 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 3655 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3277 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 3809 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 3655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-04-02 05:15:34,889 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3277 Valid, 185 Invalid, 3809 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 3655 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-04-02 05:15:35,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223562 states.