./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_stack-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-pthread/cs_stack-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 07:40:29,454 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 07:40:29,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 07:40:29,478 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 07:40:29,480 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 07:40:29,481 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 07:40:29,484 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 07:40:29,488 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 07:40:29,489 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 07:40:29,492 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 07:40:29,493 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 07:40:29,494 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 07:40:29,494 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 07:40:29,496 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 07:40:29,497 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 07:40:29,498 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 07:40:29,498 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 07:40:29,499 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 07:40:29,499 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 07:40:29,500 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 07:40:29,501 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 07:40:29,503 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 07:40:29,503 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 07:40:29,504 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 07:40:29,505 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 07:40:29,512 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 07:40:29,514 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 07:40:29,515 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 07:40:29,515 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 07:40:29,516 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 07:40:29,516 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 07:40:29,517 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 07:40:29,518 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 07:40:29,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 07:40:29,519 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 07:40:29,520 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 07:40:29,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 07:40:29,520 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 07:40:29,520 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 07:40:29,520 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 07:40:29,521 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 07:40:29,523 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 07:40:29,524 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 07:40:29,547 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 07:40:29,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 07:40:29,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 07:40:29,547 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 07:40:29,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 07:40:29,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 07:40:29,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 07:40:29,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 07:40:29,549 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 07:40:29,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 07:40:29,550 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 07:40:29,550 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 07:40:29,550 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 07:40:29,550 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 07:40:29,550 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 07:40:29,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 07:40:29,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 07:40:29,551 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 07:40:29,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 07:40:29,551 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 07:40:29,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 07:40:29,551 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 07:40:29,551 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 07:40:29,551 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 07:40:29,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:40:29,552 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 07:40:29,552 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 07:40:29,552 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 07:40:29,552 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 07:40:29,552 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 07:40:29,552 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 07:40:29,553 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 07:40:29,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 07:40:29,553 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f673ebb9e7e04aacff207de4acfe748a76999a1319247236c14ae51e44f23889 [2022-07-12 07:40:29,708 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 07:40:29,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 07:40:29,738 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 07:40:29,739 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 07:40:29,740 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 07:40:29,741 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stack-1.i [2022-07-12 07:40:29,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6469d8274/1f1a7abb74c74348b4b80e5930a1f895/FLAGf24b6560c [2022-07-12 07:40:30,222 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 07:40:30,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-1.i [2022-07-12 07:40:30,241 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6469d8274/1f1a7abb74c74348b4b80e5930a1f895/FLAGf24b6560c [2022-07-12 07:40:30,265 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6469d8274/1f1a7abb74c74348b4b80e5930a1f895 [2022-07-12 07:40:30,267 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 07:40:30,268 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 07:40:30,270 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 07:40:30,270 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 07:40:30,272 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 07:40:30,273 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,274 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc0d5d6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30, skipping insertion in model container [2022-07-12 07:40:30,274 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,278 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 07:40:30,320 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 07:40:30,574 WARN L230 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-pthread/cs_stack-1.i[34744,34757] [2022-07-12 07:40:30,655 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:40:30,665 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 07:40:30,686 WARN L230 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-pthread/cs_stack-1.i[34744,34757] [2022-07-12 07:40:30,723 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 07:40:30,773 INFO L208 MainTranslator]: Completed translation [2022-07-12 07:40:30,773 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30 WrapperNode [2022-07-12 07:40:30,774 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 07:40:30,775 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 07:40:30,775 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 07:40:30,775 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 07:40:30,780 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,814 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,856 INFO L137 Inliner]: procedures = 254, calls = 276, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 640 [2022-07-12 07:40:30,859 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 07:40:30,861 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 07:40:30,861 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 07:40:30,861 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 07:40:30,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,867 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,882 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,904 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,920 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,922 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 07:40:30,931 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 07:40:30,931 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 07:40:30,931 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 07:40:30,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (1/1) ... [2022-07-12 07:40:30,950 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 07:40:30,958 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:40:30,970 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) [2022-07-12 07:40:30,976 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 [2022-07-12 07:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 07:40:30,994 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 07:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 07:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-07-12 07:40:30,994 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-07-12 07:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 07:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 07:40:30,994 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-07-12 07:40:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2022-07-12 07:40:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-07-12 07:40:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-07-12 07:40:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-12 07:40:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-12 07:40:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-12 07:40:30,995 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-07-12 07:40:30,995 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-07-12 07:40:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 07:40:30,996 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 07:40:30,996 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 07:40:31,140 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 07:40:31,141 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 07:40:31,191 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:31,192 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2022-07-12 07:40:31,219 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:31,219 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2022-07-12 07:40:31,219 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2022-07-12 07:40:31,220 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:31,220 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:31,220 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L933: SUMMARY for call __CS_cs(); srcloc: null [2022-07-12 07:40:31,220 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume 0 != ~__CS_ret~0 % 256; [2022-07-12 07:40:31,220 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L933-1: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:31,220 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2022-07-12 07:40:31,490 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:31,490 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-07-12 07:40:31,490 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:31,491 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-12 07:40:31,491 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:31,491 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-12 07:40:31,491 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:31,491 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-12 07:40:31,491 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-12 07:40:31,492 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L1005: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2022-07-12 07:40:31,492 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L989-2: SUMMARY for call __CS_cs(); srcloc: null [2022-07-12 07:40:31,492 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-07-12 07:40:31,492 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2022-07-12 07:40:33,760 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 07:40:33,766 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 07:40:33,766 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2022-07-12 07:40:33,767 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:40:33 BoogieIcfgContainer [2022-07-12 07:40:33,767 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 07:40:33,768 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 07:40:33,768 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 07:40:33,771 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 07:40:33,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 07:40:30" (1/3) ... [2022-07-12 07:40:33,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:40:33, skipping insertion in model container [2022-07-12 07:40:33,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 07:40:30" (2/3) ... [2022-07-12 07:40:33,771 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71693b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 07:40:33, skipping insertion in model container [2022-07-12 07:40:33,771 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 07:40:33" (3/3) ... [2022-07-12 07:40:33,772 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-1.i [2022-07-12 07:40:33,781 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 07:40:33,781 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 07:40:33,814 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 07:40:33,819 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f0d3da9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7a95266c [2022-07-12 07:40:33,819 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 07:40:33,824 INFO L276 IsEmpty]: Start isEmpty. Operand has 226 states, 142 states have (on average 1.528169014084507) internal successors, (217), 145 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-07-12 07:40:33,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 07:40:33,850 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:33,851 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:33,852 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:33,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:33,857 INFO L85 PathProgramCache]: Analyzing trace with hash 2082055361, now seen corresponding path program 1 times [2022-07-12 07:40:33,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:33,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547012043] [2022-07-12 07:40:33,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:33,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:34,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 07:40:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 07:40:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 07:40:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 07:40:35,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 07:40:35,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 07:40:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 07:40:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 07:40:35,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 07:40:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 07:40:35,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 07:40:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 07:40:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 07:40:35,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 07:40:35,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:35,257 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-12 07:40:35,257 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:35,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547012043] [2022-07-12 07:40:35,260 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547012043] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:40:35,260 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:40:35,260 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 07:40:35,261 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058478822] [2022-07-12 07:40:35,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:40:35,265 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-12 07:40:35,265 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:40:35,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-12 07:40:35,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 07:40:35,294 INFO L87 Difference]: Start difference. First operand has 226 states, 142 states have (on average 1.528169014084507) internal successors, (217), 145 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 07:40:35,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:40:35,350 INFO L93 Difference]: Finished difference Result 450 states and 791 transitions. [2022-07-12 07:40:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-12 07:40:35,353 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2022-07-12 07:40:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:40:35,360 INFO L225 Difference]: With dead ends: 450 [2022-07-12 07:40:35,360 INFO L226 Difference]: Without dead ends: 222 [2022-07-12 07:40:35,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-12 07:40:35,375 INFO L413 NwaCegarLoop]: 356 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:40:35,377 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 356 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:40:35,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2022-07-12 07:40:35,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 222. [2022-07-12 07:40:35,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 139 states have (on average 1.4820143884892085) internal successors, (206), 141 states have internal predecessors, (206), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-07-12 07:40:35,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 352 transitions. [2022-07-12 07:40:35,431 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 352 transitions. Word has length 96 [2022-07-12 07:40:35,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:40:35,431 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 352 transitions. [2022-07-12 07:40:35,431 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 07:40:35,432 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 352 transitions. [2022-07-12 07:40:35,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-12 07:40:35,443 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:35,443 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:35,443 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 07:40:35,443 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:35,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:35,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1601368773, now seen corresponding path program 1 times [2022-07-12 07:40:35,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:35,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556265292] [2022-07-12 07:40:35,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:35,445 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 07:40:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 07:40:37,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-12 07:40:37,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-12 07:40:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-12 07:40:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 07:40:37,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 07:40:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 07:40:37,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 07:40:37,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 07:40:37,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 07:40:37,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 07:40:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 07:40:37,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-12 07:40:37,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:37,801 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-12 07:40:37,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:37,805 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556265292] [2022-07-12 07:40:37,805 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556265292] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:40:37,806 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:40:37,806 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:40:37,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160648567] [2022-07-12 07:40:37,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:40:37,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:40:37,808 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:40:37,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:40:37,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:40:37,809 INFO L87 Difference]: Start difference. First operand 222 states and 352 transitions. Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 07:40:37,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:40:37,875 INFO L93 Difference]: Finished difference Result 442 states and 702 transitions. [2022-07-12 07:40:37,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:40:37,876 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 96 [2022-07-12 07:40:37,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:40:37,882 INFO L225 Difference]: With dead ends: 442 [2022-07-12 07:40:37,882 INFO L226 Difference]: Without dead ends: 229 [2022-07-12 07:40:37,884 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:40:37,886 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 8 mSDsluCounter, 346 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 694 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:40:37,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 694 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:40:37,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-12 07:40:37,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 223. [2022-07-12 07:40:37,923 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 223 states, 140 states have (on average 1.4785714285714286) internal successors, (207), 142 states have internal predecessors, (207), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-07-12 07:40:37,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 223 states to 223 states and 353 transitions. [2022-07-12 07:40:37,927 INFO L78 Accepts]: Start accepts. Automaton has 223 states and 353 transitions. Word has length 96 [2022-07-12 07:40:37,927 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:40:37,927 INFO L495 AbstractCegarLoop]: Abstraction has 223 states and 353 transitions. [2022-07-12 07:40:37,927 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 3 states have internal predecessors, (29), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 07:40:37,927 INFO L276 IsEmpty]: Start isEmpty. Operand 223 states and 353 transitions. [2022-07-12 07:40:37,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 07:40:37,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:37,932 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:37,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 07:40:37,932 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:37,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:37,933 INFO L85 PathProgramCache]: Analyzing trace with hash -36735240, now seen corresponding path program 1 times [2022-07-12 07:40:37,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:37,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103924568] [2022-07-12 07:40:37,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:37,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 07:40:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 07:40:38,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 07:40:38,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 07:40:38,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 07:40:38,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 07:40:38,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 07:40:38,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 07:40:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 07:40:38,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 07:40:38,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 07:40:38,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 07:40:38,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 07:40:38,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 07:40:38,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:38,820 INFO L134 CoverageAnalysis]: Checked inductivity of 365 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-12 07:40:38,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:38,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103924568] [2022-07-12 07:40:38,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103924568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:40:38,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:40:38,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 07:40:38,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579374439] [2022-07-12 07:40:38,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:40:38,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 07:40:38,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:40:38,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 07:40:38,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:40:38,822 INFO L87 Difference]: Start difference. First operand 223 states and 353 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 07:40:38,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:40:38,845 INFO L93 Difference]: Finished difference Result 447 states and 709 transitions. [2022-07-12 07:40:38,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 07:40:38,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 101 [2022-07-12 07:40:38,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:40:38,847 INFO L225 Difference]: With dead ends: 447 [2022-07-12 07:40:38,847 INFO L226 Difference]: Without dead ends: 227 [2022-07-12 07:40:38,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 07:40:38,849 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 2 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:40:38,849 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 691 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:40:38,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 227 states. [2022-07-12 07:40:38,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 227 to 225. [2022-07-12 07:40:38,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 225 states, 142 states have (on average 1.471830985915493) internal successors, (209), 144 states have internal predecessors, (209), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-07-12 07:40:38,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 355 transitions. [2022-07-12 07:40:38,859 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 355 transitions. Word has length 101 [2022-07-12 07:40:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:40:38,860 INFO L495 AbstractCegarLoop]: Abstraction has 225 states and 355 transitions. [2022-07-12 07:40:38,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 07:40:38,860 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 355 transitions. [2022-07-12 07:40:38,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 07:40:38,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:38,862 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:38,862 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 07:40:38,862 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:38,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:38,863 INFO L85 PathProgramCache]: Analyzing trace with hash -1158934788, now seen corresponding path program 1 times [2022-07-12 07:40:38,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:38,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1534648414] [2022-07-12 07:40:38,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:38,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:39,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-12 07:40:39,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-12 07:40:39,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-12 07:40:39,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-12 07:40:39,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 07:40:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 07:40:39,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 07:40:39,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 07:40:39,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 07:40:39,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 07:40:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 07:40:39,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 07:40:39,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 07:40:39,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 07:40:39,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:39,938 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-07-12 07:40:39,938 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:39,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1534648414] [2022-07-12 07:40:39,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1534648414] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:40:39,939 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063399470] [2022-07-12 07:40:39,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:39,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:40:39,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:40:39,960 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) [2022-07-12 07:40:39,979 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 07:40:44,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:44,782 INFO L263 TraceCheckSpWp]: Trace formula consists of 16939 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 07:40:44,855 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:40:44,887 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-07-12 07:40:44,887 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:40:44,928 INFO L134 CoverageAnalysis]: Checked inductivity of 367 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 365 trivial. 0 not checked. [2022-07-12 07:40:44,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063399470] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:40:44,929 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:40:44,929 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-12 07:40:44,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1686078965] [2022-07-12 07:40:44,929 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:40:44,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 07:40:44,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:40:44,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 07:40:44,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:40:44,930 INFO L87 Difference]: Start difference. First operand 225 states and 355 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-07-12 07:40:44,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:40:44,979 INFO L93 Difference]: Finished difference Result 456 states and 720 transitions. [2022-07-12 07:40:44,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 07:40:44,979 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) Word has length 105 [2022-07-12 07:40:44,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:40:44,981 INFO L225 Difference]: With dead ends: 456 [2022-07-12 07:40:44,981 INFO L226 Difference]: Without dead ends: 234 [2022-07-12 07:40:44,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 235 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:40:44,982 INFO L413 NwaCegarLoop]: 348 mSDtfsCounter, 8 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 691 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:40:44,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 691 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:40:44,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2022-07-12 07:40:44,989 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 233. [2022-07-12 07:40:44,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 150 states have (on average 1.4466666666666668) internal successors, (217), 152 states have internal predecessors, (217), 73 states have call successors, (73), 9 states have call predecessors, (73), 9 states have return successors, (73), 73 states have call predecessors, (73), 73 states have call successors, (73) [2022-07-12 07:40:44,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 363 transitions. [2022-07-12 07:40:44,991 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 363 transitions. Word has length 105 [2022-07-12 07:40:44,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:40:44,992 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 363 transitions. [2022-07-12 07:40:44,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 1 states have call successors, (28), 2 states have call predecessors, (28), 2 states have return successors, (28), 1 states have call predecessors, (28), 1 states have call successors, (28) [2022-07-12 07:40:44,992 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 363 transitions. [2022-07-12 07:40:44,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 07:40:44,993 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:40:44,994 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:40:45,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-12 07:40:45,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:40:45,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:40:45,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:40:45,201 INFO L85 PathProgramCache]: Analyzing trace with hash -613512956, now seen corresponding path program 2 times [2022-07-12 07:40:45,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:40:45,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436125332] [2022-07-12 07:40:45,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:40:45,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:40:46,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 07:40:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 07:40:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 07:40:47,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 07:40:47,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 07:40:47,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 07:40:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 07:40:47,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 07:40:47,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 07:40:47,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 07:40:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 07:40:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 07:40:47,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 07:40:47,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 07:40:47,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:40:47,203 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 382 trivial. 0 not checked. [2022-07-12 07:40:47,204 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:40:47,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436125332] [2022-07-12 07:40:47,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436125332] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:40:47,204 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517490032] [2022-07-12 07:40:47,204 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 07:40:47,204 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:40:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:40:47,206 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) [2022-07-12 07:40:47,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 07:41:33,300 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 07:41:33,300 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 07:41:33,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 16657 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 07:41:33,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:41:33,539 INFO L134 CoverageAnalysis]: Checked inductivity of 383 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 383 trivial. 0 not checked. [2022-07-12 07:41:33,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 07:41:33,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517490032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:41:33,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 07:41:33,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-12 07:41:33,540 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191530302] [2022-07-12 07:41:33,540 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:41:33,541 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 07:41:33,541 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:41:33,541 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 07:41:33,541 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 07:41:33,541 INFO L87 Difference]: Start difference. First operand 233 states and 363 transitions. Second operand has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 07:41:33,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:41:33,582 INFO L93 Difference]: Finished difference Result 443 states and 707 transitions. [2022-07-12 07:41:33,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-12 07:41:33,582 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) Word has length 113 [2022-07-12 07:41:33,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:41:33,587 INFO L225 Difference]: With dead ends: 443 [2022-07-12 07:41:33,587 INFO L226 Difference]: Without dead ends: 409 [2022-07-12 07:41:33,587 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 140 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-12 07:41:33,589 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 283 mSDsluCounter, 780 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 283 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:41:33,589 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [283 Valid, 1222 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 07:41:33,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2022-07-12 07:41:33,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 408. [2022-07-12 07:41:33,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 408 states, 258 states have (on average 1.496124031007752) internal successors, (386), 262 states have internal predecessors, (386), 131 states have call successors, (131), 18 states have call predecessors, (131), 18 states have return successors, (139), 131 states have call predecessors, (139), 131 states have call successors, (139) [2022-07-12 07:41:33,616 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 408 states to 408 states and 656 transitions. [2022-07-12 07:41:33,616 INFO L78 Accepts]: Start accepts. Automaton has 408 states and 656 transitions. Word has length 113 [2022-07-12 07:41:33,616 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:41:33,617 INFO L495 AbstractCegarLoop]: Abstraction has 408 states and 656 transitions. [2022-07-12 07:41:33,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.5) internal successors, (38), 3 states have internal predecessors, (38), 1 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-12 07:41:33,617 INFO L276 IsEmpty]: Start isEmpty. Operand 408 states and 656 transitions. [2022-07-12 07:41:33,620 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 203 [2022-07-12 07:41:33,620 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:41:33,620 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:41:33,702 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 07:41:33,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:41:33,839 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:41:33,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:41:33,840 INFO L85 PathProgramCache]: Analyzing trace with hash -1675025166, now seen corresponding path program 1 times [2022-07-12 07:41:33,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:41:33,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854221435] [2022-07-12 07:41:33,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:41:33,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:41:35,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-12 07:41:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 07:41:36,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:36,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 07:41:36,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 07:41:36,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 07:41:36,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 07:41:36,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:36,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 07:41:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 07:41:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:36,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-12 07:41:36,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 07:41:36,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-12 07:41:36,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-12 07:41:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-12 07:41:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-12 07:41:36,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-12 07:41:36,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-12 07:41:36,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-12 07:41:36,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-12 07:41:36,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-12 07:41:36,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-12 07:41:36,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-12 07:41:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-12 07:41:36,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:36,181 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 772 trivial. 0 not checked. [2022-07-12 07:41:36,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:41:36,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854221435] [2022-07-12 07:41:36,182 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854221435] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:41:36,182 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651324598] [2022-07-12 07:41:36,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:41:36,182 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:41:36,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:41:36,183 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) [2022-07-12 07:41:36,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 07:41:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:42,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 17357 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 07:41:42,518 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:41:42,555 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-07-12 07:41:42,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:41:42,689 INFO L134 CoverageAnalysis]: Checked inductivity of 773 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 763 trivial. 0 not checked. [2022-07-12 07:41:42,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651324598] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:41:42,690 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:41:42,691 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 13 [2022-07-12 07:41:42,691 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [554093724] [2022-07-12 07:41:42,691 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:41:42,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-12 07:41:42,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:41:42,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-12 07:41:42,693 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-12 07:41:42,693 INFO L87 Difference]: Start difference. First operand 408 states and 656 transitions. Second operand has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 9 states have internal predecessors, (118), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-07-12 07:41:44,844 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:41:46,864 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:41:47,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:41:47,398 INFO L93 Difference]: Finished difference Result 848 states and 1356 transitions. [2022-07-12 07:41:47,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-12 07:41:47,399 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 9 states have internal predecessors, (118), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) Word has length 202 [2022-07-12 07:41:47,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:41:47,401 INFO L225 Difference]: With dead ends: 848 [2022-07-12 07:41:47,402 INFO L226 Difference]: Without dead ends: 443 [2022-07-12 07:41:47,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 456 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=144, Invalid=408, Unknown=0, NotChecked=0, Total=552 [2022-07-12 07:41:47,404 INFO L413 NwaCegarLoop]: 339 mSDtfsCounter, 121 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 615 mSolverCounterSat, 270 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 123 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 615 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:41:47,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [123 Valid, 1702 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 615 Invalid, 2 Unknown, 0 Unchecked, 4.6s Time] [2022-07-12 07:41:47,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2022-07-12 07:41:47,416 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 437. [2022-07-12 07:41:47,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 285 states have (on average 1.456140350877193) internal successors, (415), 291 states have internal predecessors, (415), 131 states have call successors, (131), 18 states have call predecessors, (131), 20 states have return successors, (143), 131 states have call predecessors, (143), 131 states have call successors, (143) [2022-07-12 07:41:47,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 689 transitions. [2022-07-12 07:41:47,419 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 689 transitions. Word has length 202 [2022-07-12 07:41:47,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:41:47,420 INFO L495 AbstractCegarLoop]: Abstraction has 437 states and 689 transitions. [2022-07-12 07:41:47,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.076923076923077) internal successors, (118), 9 states have internal predecessors, (118), 2 states have call successors, (54), 6 states have call predecessors, (54), 2 states have return successors, (46), 2 states have call predecessors, (46), 2 states have call successors, (46) [2022-07-12 07:41:47,420 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 689 transitions. [2022-07-12 07:41:47,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-12 07:41:47,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:41:47,423 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:41:47,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 07:41:47,639 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:41:47,639 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:41:47,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:41:47,640 INFO L85 PathProgramCache]: Analyzing trace with hash 75770481, now seen corresponding path program 2 times [2022-07-12 07:41:47,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:41:47,640 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360595825] [2022-07-12 07:41:47,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:41:47,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:41:52,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 07:41:55,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 07:41:55,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:55,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 07:41:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:55,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 07:41:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 07:41:55,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 07:41:55,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:55,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 07:41:55,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 07:41:55,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:41:55,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 07:41:55,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 07:41:55,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 07:41:55,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 07:41:55,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 07:41:55,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 07:41:55,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 07:41:55,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-12 07:41:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 07:41:55,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 07:41:55,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-12 07:41:55,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-12 07:41:55,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-12 07:41:55,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 07:41:55,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:41:55,329 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-07-12 07:41:55,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:41:55,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360595825] [2022-07-12 07:41:55,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360595825] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:41:55,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:41:55,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 07:41:55,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699220538] [2022-07-12 07:41:55,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:41:55,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:41:55,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:41:55,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:41:55,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:41:55,331 INFO L87 Difference]: Start difference. First operand 437 states and 689 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-12 07:41:57,354 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:41:58,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:41:58,722 INFO L93 Difference]: Finished difference Result 1418 states and 2349 transitions. [2022-07-12 07:41:58,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 07:41:58,722 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 227 [2022-07-12 07:41:58,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:41:58,729 INFO L225 Difference]: With dead ends: 1418 [2022-07-12 07:41:58,729 INFO L226 Difference]: Without dead ends: 1034 [2022-07-12 07:41:58,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-12 07:41:58,732 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 891 mSDsluCounter, 1112 mSDsCounter, 0 mSdLazyCounter, 1147 mSolverCounterSat, 740 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 936 SdHoareTripleChecker+Valid, 1565 SdHoareTripleChecker+Invalid, 1888 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 740 IncrementalHoareTripleChecker+Valid, 1147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-12 07:41:58,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [936 Valid, 1565 Invalid, 1888 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [740 Valid, 1147 Invalid, 1 Unknown, 0 Unchecked, 3.2s Time] [2022-07-12 07:41:58,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1034 states. [2022-07-12 07:41:58,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1034 to 917. [2022-07-12 07:41:58,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 917 states, 576 states have (on average 1.5) internal successors, (864), 593 states have internal predecessors, (864), 297 states have call successors, (297), 36 states have call predecessors, (297), 43 states have return successors, (340), 297 states have call predecessors, (340), 297 states have call successors, (340) [2022-07-12 07:41:58,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 917 states to 917 states and 1501 transitions. [2022-07-12 07:41:58,777 INFO L78 Accepts]: Start accepts. Automaton has 917 states and 1501 transitions. Word has length 227 [2022-07-12 07:41:58,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:41:58,778 INFO L495 AbstractCegarLoop]: Abstraction has 917 states and 1501 transitions. [2022-07-12 07:41:58,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-12 07:41:58,779 INFO L276 IsEmpty]: Start isEmpty. Operand 917 states and 1501 transitions. [2022-07-12 07:41:58,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-12 07:41:58,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:41:58,785 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:41:58,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 07:41:58,785 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:41:58,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:41:58,785 INFO L85 PathProgramCache]: Analyzing trace with hash -1416987875, now seen corresponding path program 1 times [2022-07-12 07:41:58,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:41:58,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853776436] [2022-07-12 07:41:58,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:41:58,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:42:03,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 07:42:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 07:42:06,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:06,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 07:42:06,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:06,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 07:42:06,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 07:42:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:06,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 07:42:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:06,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 07:42:06,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 07:42:06,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:06,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 07:42:06,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 07:42:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 07:42:06,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 07:42:06,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 07:42:06,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 07:42:06,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 07:42:06,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-12 07:42:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 07:42:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 07:42:06,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-12 07:42:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-12 07:42:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-12 07:42:06,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 07:42:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-07-12 07:42:06,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:42:06,885 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853776436] [2022-07-12 07:42:06,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853776436] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:42:06,885 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:42:06,885 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 07:42:06,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061177007] [2022-07-12 07:42:06,886 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:42:06,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 07:42:06,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:42:06,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 07:42:06,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 07:42:06,888 INFO L87 Difference]: Start difference. First operand 917 states and 1501 transitions. Second operand has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-12 07:42:08,904 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:10,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:42:10,151 INFO L93 Difference]: Finished difference Result 1883 states and 3107 transitions. [2022-07-12 07:42:10,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-12 07:42:10,152 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) Word has length 227 [2022-07-12 07:42:10,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:42:10,160 INFO L225 Difference]: With dead ends: 1883 [2022-07-12 07:42:10,160 INFO L226 Difference]: Without dead ends: 981 [2022-07-12 07:42:10,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-12 07:42:10,164 INFO L413 NwaCegarLoop]: 453 mSDtfsCounter, 863 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 958 mSolverCounterSat, 874 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 874 IncrementalHoareTripleChecker+Valid, 958 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:42:10,164 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 1676 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [874 Valid, 958 Invalid, 1 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 07:42:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-07-12 07:42:10,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 899. [2022-07-12 07:42:10,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 899 states, 566 states have (on average 1.4946996466431095) internal successors, (846), 583 states have internal predecessors, (846), 289 states have call successors, (289), 35 states have call predecessors, (289), 43 states have return successors, (325), 290 states have call predecessors, (325), 289 states have call successors, (325) [2022-07-12 07:42:10,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 899 states to 899 states and 1460 transitions. [2022-07-12 07:42:10,197 INFO L78 Accepts]: Start accepts. Automaton has 899 states and 1460 transitions. Word has length 227 [2022-07-12 07:42:10,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:42:10,198 INFO L495 AbstractCegarLoop]: Abstraction has 899 states and 1460 transitions. [2022-07-12 07:42:10,198 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.6) internal successors, (66), 6 states have internal predecessors, (66), 5 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 4 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-12 07:42:10,198 INFO L276 IsEmpty]: Start isEmpty. Operand 899 states and 1460 transitions. [2022-07-12 07:42:10,203 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2022-07-12 07:42:10,203 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:42:10,204 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:42:10,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 07:42:10,204 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:42:10,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:42:10,204 INFO L85 PathProgramCache]: Analyzing trace with hash -442184249, now seen corresponding path program 1 times [2022-07-12 07:42:10,204 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:42:10,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348581647] [2022-07-12 07:42:10,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:42:10,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:42:13,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 07:42:15,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 07:42:15,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:15,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-12 07:42:15,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-12 07:42:15,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-12 07:42:15,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 07:42:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:15,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 07:42:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 07:42:15,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:15,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-12 07:42:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2022-07-12 07:42:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-12 07:42:15,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-12 07:42:15,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-12 07:42:15,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-12 07:42:15,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-12 07:42:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2022-07-12 07:42:15,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-12 07:42:15,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 195 [2022-07-12 07:42:15,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 201 [2022-07-12 07:42:15,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 207 [2022-07-12 07:42:15,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2022-07-12 07:42:15,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2022-07-12 07:42:15,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:15,192 INFO L134 CoverageAnalysis]: Checked inductivity of 913 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-07-12 07:42:15,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:42:15,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348581647] [2022-07-12 07:42:15,193 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348581647] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 07:42:15,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 07:42:15,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 07:42:15,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185254235] [2022-07-12 07:42:15,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 07:42:15,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 07:42:15,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:42:15,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 07:42:15,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-12 07:42:15,195 INFO L87 Difference]: Start difference. First operand 899 states and 1460 transitions. Second operand has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 07:42:17,221 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:18,366 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:42:18,366 INFO L93 Difference]: Finished difference Result 1385 states and 2211 transitions. [2022-07-12 07:42:18,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 07:42:18,366 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 227 [2022-07-12 07:42:18,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:42:18,371 INFO L225 Difference]: With dead ends: 1385 [2022-07-12 07:42:18,371 INFO L226 Difference]: Without dead ends: 834 [2022-07-12 07:42:18,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2022-07-12 07:42:18,374 INFO L413 NwaCegarLoop]: 442 mSDtfsCounter, 406 mSDsluCounter, 1015 mSDsCounter, 0 mSdLazyCounter, 955 mSolverCounterSat, 195 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1457 SdHoareTripleChecker+Invalid, 1151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 195 IncrementalHoareTripleChecker+Valid, 955 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 07:42:18,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1457 Invalid, 1151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [195 Valid, 955 Invalid, 1 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 07:42:18,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 834 states. [2022-07-12 07:42:18,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 834 to 724. [2022-07-12 07:42:18,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 724 states, 466 states have (on average 1.44206008583691) internal successors, (672), 479 states have internal predecessors, (672), 214 states have call successors, (214), 35 states have call predecessors, (214), 43 states have return successors, (244), 215 states have call predecessors, (244), 214 states have call successors, (244) [2022-07-12 07:42:18,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 724 states to 724 states and 1130 transitions. [2022-07-12 07:42:18,408 INFO L78 Accepts]: Start accepts. Automaton has 724 states and 1130 transitions. Word has length 227 [2022-07-12 07:42:18,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:42:18,408 INFO L495 AbstractCegarLoop]: Abstraction has 724 states and 1130 transitions. [2022-07-12 07:42:18,408 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.25) internal successors, (66), 4 states have internal predecessors, (66), 4 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-12 07:42:18,409 INFO L276 IsEmpty]: Start isEmpty. Operand 724 states and 1130 transitions. [2022-07-12 07:42:18,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-12 07:42:18,414 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:42:18,414 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:42:18,414 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 07:42:18,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:42:18,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:42:18,415 INFO L85 PathProgramCache]: Analyzing trace with hash -2180701, now seen corresponding path program 1 times [2022-07-12 07:42:18,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:42:18,415 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231951939] [2022-07-12 07:42:18,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:42:18,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:42:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:26,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 07:42:26,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:26,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 07:42:26,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:26,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:26,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 07:42:26,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:26,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:26,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:26,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 07:42:26,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 07:42:27,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:27,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 07:42:27,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 07:42:27,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:27,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 07:42:27,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 07:42:27,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:42:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 07:42:27,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 07:42:27,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 07:42:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-12 07:42:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-12 07:42:27,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 07:42:27,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-12 07:42:27,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-12 07:42:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-12 07:42:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-12 07:42:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-12 07:42:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-12 07:42:27,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-12 07:42:27,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-12 07:42:27,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:27,147 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 914 trivial. 0 not checked. [2022-07-12 07:42:27,148 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:42:27,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231951939] [2022-07-12 07:42:27,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231951939] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:42:27,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766735789] [2022-07-12 07:42:27,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:42:27,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:42:27,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:42:27,150 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:42:27,151 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 07:42:35,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:42:35,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 17762 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 07:42:35,630 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:42:35,790 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 349 proven. 6 refuted. 0 times theorem prover too weak. 562 trivial. 0 not checked. [2022-07-12 07:42:35,790 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:42:36,032 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 896 trivial. 0 not checked. [2022-07-12 07:42:36,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766735789] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:42:36,032 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:42:36,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8] total 22 [2022-07-12 07:42:36,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1653029720] [2022-07-12 07:42:36,033 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:42:36,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-12 07:42:36,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:42:36,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-12 07:42:36,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-07-12 07:42:36,034 INFO L87 Difference]: Start difference. First operand 724 states and 1130 transitions. Second operand has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 17 states have internal predecessors, (120), 7 states have call successors, (54), 7 states have call predecessors, (54), 10 states have return successors, (55), 10 states have call predecessors, (55), 7 states have call successors, (55) [2022-07-12 07:42:38,066 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:40,084 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:42:57,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:42:57,480 INFO L93 Difference]: Finished difference Result 4970 states and 8416 transitions. [2022-07-12 07:42:57,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 190 states. [2022-07-12 07:42:57,480 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 17 states have internal predecessors, (120), 7 states have call successors, (54), 7 states have call predecessors, (54), 10 states have return successors, (55), 10 states have call predecessors, (55), 7 states have call successors, (55) Word has length 231 [2022-07-12 07:42:57,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:42:57,505 INFO L225 Difference]: With dead ends: 4970 [2022-07-12 07:42:57,505 INFO L226 Difference]: Without dead ends: 4288 [2022-07-12 07:42:57,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 762 GetRequests, 563 SyntacticMatches, 1 SemanticMatches, 198 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16877 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=4711, Invalid=35089, Unknown=0, NotChecked=0, Total=39800 [2022-07-12 07:42:57,520 INFO L413 NwaCegarLoop]: 667 mSDtfsCounter, 5370 mSDsluCounter, 3126 mSDsCounter, 0 mSdLazyCounter, 13539 mSolverCounterSat, 8676 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5390 SdHoareTripleChecker+Valid, 3793 SdHoareTripleChecker+Invalid, 22217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 8676 IncrementalHoareTripleChecker+Valid, 13539 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.1s IncrementalHoareTripleChecker+Time [2022-07-12 07:42:57,520 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5390 Valid, 3793 Invalid, 22217 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [8676 Valid, 13539 Invalid, 2 Unknown, 0 Unchecked, 16.1s Time] [2022-07-12 07:42:57,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4288 states. [2022-07-12 07:42:57,777 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4288 to 3645. [2022-07-12 07:42:57,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3645 states, 2319 states have (on average 1.2919361793876671) internal successors, (2996), 2260 states have internal predecessors, (2996), 1099 states have call successors, (1099), 141 states have call predecessors, (1099), 226 states have return successors, (1694), 1247 states have call predecessors, (1694), 1099 states have call successors, (1694) [2022-07-12 07:42:57,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3645 states to 3645 states and 5789 transitions. [2022-07-12 07:42:57,797 INFO L78 Accepts]: Start accepts. Automaton has 3645 states and 5789 transitions. Word has length 231 [2022-07-12 07:42:57,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:42:57,797 INFO L495 AbstractCegarLoop]: Abstraction has 3645 states and 5789 transitions. [2022-07-12 07:42:57,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 5.454545454545454) internal successors, (120), 17 states have internal predecessors, (120), 7 states have call successors, (54), 7 states have call predecessors, (54), 10 states have return successors, (55), 10 states have call predecessors, (55), 7 states have call successors, (55) [2022-07-12 07:42:57,799 INFO L276 IsEmpty]: Start isEmpty. Operand 3645 states and 5789 transitions. [2022-07-12 07:42:57,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-12 07:42:57,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:42:57,818 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:42:57,911 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 07:42:58,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:42:58,027 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:42:58,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:42:58,028 INFO L85 PathProgramCache]: Analyzing trace with hash -394328382, now seen corresponding path program 1 times [2022-07-12 07:42:58,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:42:58,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532951125] [2022-07-12 07:42:58,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:42:58,028 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 07:43:05,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-12 07:43:06,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 07:43:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:43:06,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 07:43:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:43:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-12 07:43:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-12 07:43:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:43:06,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-12 07:43:06,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 07:43:06,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:43:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 07:43:06,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 07:43:06,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 07:43:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 07:43:06,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 07:43:06,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-12 07:43:06,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:06,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-12 07:43:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-12 07:43:07,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-12 07:43:07,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 181 [2022-07-12 07:43:07,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 187 [2022-07-12 07:43:07,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-12 07:43:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-12 07:43:07,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2022-07-12 07:43:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2022-07-12 07:43:07,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-12 07:43:07,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-12 07:43:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:07,018 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 915 trivial. 0 not checked. [2022-07-12 07:43:07,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 07:43:07,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532951125] [2022-07-12 07:43:07,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532951125] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 07:43:07,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1620641324] [2022-07-12 07:43:07,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:43:07,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 07:43:07,019 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 07:43:07,040 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 07:43:07,041 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 07:43:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 07:43:15,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 17831 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-12 07:43:15,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 07:43:16,010 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 569 trivial. 0 not checked. [2022-07-12 07:43:16,010 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 07:43:16,322 INFO L134 CoverageAnalysis]: Checked inductivity of 917 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 913 trivial. 0 not checked. [2022-07-12 07:43:16,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1620641324] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 07:43:16,322 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 07:43:16,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 23 [2022-07-12 07:43:16,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671096513] [2022-07-12 07:43:16,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 07:43:16,323 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 07:43:16,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 07:43:16,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 07:43:16,324 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-07-12 07:43:16,324 INFO L87 Difference]: Start difference. First operand 3645 states and 5789 transitions. Second operand has 23 states, 22 states have (on average 5.545454545454546) internal successors, (122), 19 states have internal predecessors, (122), 13 states have call successors, (57), 10 states have call predecessors, (57), 11 states have return successors, (55), 11 states have call predecessors, (55), 13 states have call successors, (55) [2022-07-12 07:43:18,348 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:43:20,368 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:43:22,388 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:43:24,408 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:43:26,422 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:43:28,433 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-12 07:43:33,786 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 07:43:33,787 INFO L93 Difference]: Finished difference Result 11647 states and 18847 transitions. [2022-07-12 07:43:33,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 07:43:33,787 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.545454545454546) internal successors, (122), 19 states have internal predecessors, (122), 13 states have call successors, (57), 10 states have call predecessors, (57), 11 states have return successors, (55), 11 states have call predecessors, (55), 13 states have call successors, (55) Word has length 231 [2022-07-12 07:43:33,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 07:43:33,827 INFO L225 Difference]: With dead ends: 11647 [2022-07-12 07:43:33,828 INFO L226 Difference]: Without dead ends: 8013 [2022-07-12 07:43:33,846 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 553 GetRequests, 507 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 573 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=427, Invalid=1735, Unknown=0, NotChecked=0, Total=2162 [2022-07-12 07:43:33,846 INFO L413 NwaCegarLoop]: 785 mSDtfsCounter, 2077 mSDsluCounter, 3147 mSDsCounter, 0 mSdLazyCounter, 5803 mSolverCounterSat, 1917 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2232 SdHoareTripleChecker+Valid, 3932 SdHoareTripleChecker+Invalid, 7726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1917 IncrementalHoareTripleChecker+Valid, 5803 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.6s IncrementalHoareTripleChecker+Time [2022-07-12 07:43:33,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2232 Valid, 3932 Invalid, 7726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1917 Valid, 5803 Invalid, 6 Unknown, 0 Unchecked, 16.6s Time] [2022-07-12 07:43:33,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8013 states. [2022-07-12 07:43:34,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8013 to 7167. [2022-07-12 07:43:34,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7167 states, 4499 states have (on average 1.2931762613914204) internal successors, (5818), 4429 states have internal predecessors, (5818), 2258 states have call successors, (2258), 251 states have call predecessors, (2258), 409 states have return successors, (3450), 2498 states have call predecessors, (3450), 2258 states have call successors, (3450) [2022-07-12 07:43:34,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7167 states to 7167 states and 11526 transitions. [2022-07-12 07:43:34,283 INFO L78 Accepts]: Start accepts. Automaton has 7167 states and 11526 transitions. Word has length 231 [2022-07-12 07:43:34,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 07:43:34,283 INFO L495 AbstractCegarLoop]: Abstraction has 7167 states and 11526 transitions. [2022-07-12 07:43:34,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.545454545454546) internal successors, (122), 19 states have internal predecessors, (122), 13 states have call successors, (57), 10 states have call predecessors, (57), 11 states have return successors, (55), 11 states have call predecessors, (55), 13 states have call successors, (55) [2022-07-12 07:43:34,284 INFO L276 IsEmpty]: Start isEmpty. Operand 7167 states and 11526 transitions. [2022-07-12 07:43:34,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 232 [2022-07-12 07:43:34,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 07:43:34,311 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 10, 10, 6, 6, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 07:43:34,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 07:43:34,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-12 07:43:34,539 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 07:43:34,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 07:43:34,540 INFO L85 PathProgramCache]: Analyzing trace with hash -212595133, now seen corresponding path program 1 times [2022-07-12 07:43:34,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 07:43:34,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181686945] [2022-07-12 07:43:34,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 07:43:34,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms