./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_stack-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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-2.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 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 18:44:20,927 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 18:44:20,929 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 18:44:20,954 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 18:44:20,955 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 18:44:20,956 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 18:44:20,957 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 18:44:20,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 18:44:20,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 18:44:20,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 18:44:20,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 18:44:20,962 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 18:44:20,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 18:44:20,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 18:44:20,964 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 18:44:20,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 18:44:20,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 18:44:20,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 18:44:20,969 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 18:44:20,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 18:44:20,974 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 18:44:20,980 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 18:44:20,981 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 18:44:20,982 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 18:44:20,983 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 18:44:20,985 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 18:44:20,992 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 18:44:20,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 18:44:20,994 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 18:44:20,994 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 18:44:20,995 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 18:44:20,995 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 18:44:20,996 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 18:44:20,996 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 18:44:20,997 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 18:44:20,999 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 18:44:21,000 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 18:44:21,000 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 18:44:21,001 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 18:44:21,001 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 18:44:21,002 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 18:44:21,003 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 18:44:21,005 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 18:44:21,028 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 18:44:21,028 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 18:44:21,028 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 18:44:21,029 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 18:44:21,029 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 18:44:21,029 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 18:44:21,030 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 18:44:21,030 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 18:44:21,030 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 18:44:21,031 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 18:44:21,031 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 18:44:21,031 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 18:44:21,031 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 18:44:21,031 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 18:44:21,032 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 18:44:21,032 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 18:44:21,032 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 18:44:21,032 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 18:44:21,032 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 18:44:21,032 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 18:44:21,033 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 18:44:21,033 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 18:44:21,033 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 18:44:21,033 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 18:44:21,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:44:21,034 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 18:44:21,034 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 18:44:21,034 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 18:44:21,034 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 18:44:21,034 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 18:44:21,035 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 18:44:21,035 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 18:44:21,035 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 18:44:21,035 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0a870e8a4a7dff1b238c9b19b47586f7abd44e3f0eb9969b7dad7bbd7f80e506 [2022-07-19 18:44:21,298 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 18:44:21,336 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 18:44:21,339 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 18:44:21,340 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 18:44:21,343 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 18:44:21,345 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_stack-2.i [2022-07-19 18:44:21,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929c0774d/e86100ff59024f638d34954835548caf/FLAG928b1d8af [2022-07-19 18:44:21,996 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 18:44:21,997 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_stack-2.i [2022-07-19 18:44:22,020 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929c0774d/e86100ff59024f638d34954835548caf/FLAG928b1d8af [2022-07-19 18:44:22,425 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/929c0774d/e86100ff59024f638d34954835548caf [2022-07-19 18:44:22,427 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 18:44:22,428 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 18:44:22,429 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 18:44:22,430 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 18:44:22,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 18:44:22,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:44:22" (1/1) ... [2022-07-19 18:44:22,434 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6854d4d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:22, skipping insertion in model container [2022-07-19 18:44:22,435 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 06:44:22" (1/1) ... [2022-07-19 18:44:22,441 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 18:44:22,495 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 18:44:22,890 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-2.i[34556,34569] [2022-07-19 18:44:23,083 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:44:23,102 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 18:44:23,143 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-2.i[34556,34569] [2022-07-19 18:44:23,207 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 18:44:23,270 INFO L208 MainTranslator]: Completed translation [2022-07-19 18:44:23,271 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23 WrapperNode [2022-07-19 18:44:23,271 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 18:44:23,273 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 18:44:23,273 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 18:44:23,273 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 18:44:23,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,320 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,380 INFO L137 Inliner]: procedures = 252, calls = 270, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 603 [2022-07-19 18:44:23,380 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 18:44:23,381 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 18:44:23,381 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 18:44:23,384 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 18:44:23,394 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,394 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,401 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,428 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,433 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,436 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,442 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 18:44:23,443 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 18:44:23,443 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 18:44:23,443 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 18:44:23,444 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (1/1) ... [2022-07-19 18:44:23,456 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 18:44:23,473 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:44:23,484 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) [2022-07-19 18:44:23,493 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 [2022-07-19 18:44:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 18:44:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 18:44:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 18:44:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_lock [2022-07-19 18:44:23,530 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_lock [2022-07-19 18:44:23,530 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 18:44:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 18:44:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 18:44:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_mutex_unlock [2022-07-19 18:44:23,531 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_mutex_unlock [2022-07-19 18:44:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 18:44:23,531 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 18:44:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure get_top [2022-07-19 18:44:23,532 INFO L138 BoogieDeclarations]: Found implementation of procedure get_top [2022-07-19 18:44:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 18:44:23,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 18:44:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-07-19 18:44:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-07-19 18:44:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-07-19 18:44:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-07-19 18:44:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-19 18:44:23,533 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-19 18:44:23,533 INFO L130 BoogieDeclarations]: Found specification of procedure error [2022-07-19 18:44:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2022-07-19 18:44:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-07-19 18:44:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-07-19 18:44:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 18:44:23,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 18:44:23,534 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 18:44:23,729 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 18:44:23,731 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 18:44:23,864 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:23,864 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256;#res := 0; [2022-07-19 18:44:23,884 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume 0 != ~__CS_ret~0 % 256; [2022-07-19 18:44:23,884 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L930-1: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:23,884 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##8: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:23,885 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume 0 != ~__CS_ret~0 % 256; [2022-07-19 18:44:23,885 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##7: assume 0 != ~__CS_ret~0 % 256; [2022-07-19 18:44:23,885 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##10: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:23,885 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##4: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:23,885 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##3: assume 0 != ~__CS_ret~0 % 256; [2022-07-19 18:44:23,886 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L930: SUMMARY for call __CS_cs(); srcloc: null [2022-07-19 18:44:24,204 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##97: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:24,204 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##96: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-07-19 18:44:24,204 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##54: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:24,204 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##53: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-19 18:44:24,205 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##58: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:24,205 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##57: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-19 18:44:24,205 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##43: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:24,205 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##42: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-19 18:44:24,205 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume 0 != ~__CS_ret~0 % 256;pop_#res#1 := 0; [2022-07-19 18:44:24,205 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L1002: assume !(0 != ~__CS_ret~0 % 256);pop_#res#1 := 0; [2022-07-19 18:44:24,206 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint L986-4: SUMMARY for call __CS_cs(); srcloc: null [2022-07-19 18:44:24,206 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##111: assume 0 != ~__CS_ret~0 % 256;push_#res#1 := 0; [2022-07-19 18:44:24,206 INFO L764 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##112: assume !(0 != ~__CS_ret~0 % 256); [2022-07-19 18:44:26,608 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 18:44:26,624 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 18:44:26,625 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-19 18:44:26,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:44:26 BoogieIcfgContainer [2022-07-19 18:44:26,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 18:44:26,632 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 18:44:26,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 18:44:26,636 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 18:44:26,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 06:44:22" (1/3) ... [2022-07-19 18:44:26,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6479ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:44:26, skipping insertion in model container [2022-07-19 18:44:26,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 06:44:23" (2/3) ... [2022-07-19 18:44:26,637 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d6479ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 06:44:26, skipping insertion in model container [2022-07-19 18:44:26,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 06:44:26" (3/3) ... [2022-07-19 18:44:26,639 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_stack-2.i [2022-07-19 18:44:26,652 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 18:44:26,653 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 18:44:26,731 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 18:44:26,739 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@66f6ba63, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@71ed47b8 [2022-07-19 18:44:26,740 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 18:44:26,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-07-19 18:44:26,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 18:44:26,785 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:44:26,786 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] [2022-07-19 18:44:26,786 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:44:26,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:44:26,793 INFO L85 PathProgramCache]: Analyzing trace with hash 1676979695, now seen corresponding path program 1 times [2022-07-19 18:44:26,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:44:26,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1126936780] [2022-07-19 18:44:26,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:44:26,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:44:32,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:34,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 18:44:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:34,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 18:44:34,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:34,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 18:44:34,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:34,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 18:44:34,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:34,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 18:44:35,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 18:44:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 18:44:35,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 18:44:35,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 18:44:35,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 18:44:35,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 18:44:35,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 18:44:35,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 18:44:35,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 18:44:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:35,038 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 18:44:35,039 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:44:35,039 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1126936780] [2022-07-19 18:44:35,039 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1126936780] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:44:35,040 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:44:35,040 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 18:44:35,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127055555] [2022-07-19 18:44:35,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:44:35,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-19 18:44:35,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:44:35,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-19 18:44:35,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-19 18:44:35,070 INFO L87 Difference]: Start difference. First operand has 222 states, 136 states have (on average 1.5147058823529411) internal successors, (206), 139 states have internal predecessors, (206), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) Second operand has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 18:44:35,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:44:35,137 INFO L93 Difference]: Finished difference Result 440 states and 775 transitions. [2022-07-19 18:44:35,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-19 18:44:35,139 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 94 [2022-07-19 18:44:35,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:44:35,154 INFO L225 Difference]: With dead ends: 440 [2022-07-19 18:44:35,155 INFO L226 Difference]: Without dead ends: 218 [2022-07-19 18:44:35,164 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 [2022-07-19 18:44:35,167 INFO L413 NwaCegarLoop]: 352 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, 352 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 [2022-07-19 18:44:35,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 352 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:44:35,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 218 states. [2022-07-19 18:44:35,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 218 to 218. [2022-07-19 18:44:35,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 218 states, 133 states have (on average 1.4887218045112782) internal successors, (198), 135 states have internal predecessors, (198), 75 states have call successors, (75), 9 states have call predecessors, (75), 9 states have return successors, (75), 75 states have call predecessors, (75), 75 states have call successors, (75) [2022-07-19 18:44:35,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 218 states to 218 states and 348 transitions. [2022-07-19 18:44:35,223 INFO L78 Accepts]: Start accepts. Automaton has 218 states and 348 transitions. Word has length 94 [2022-07-19 18:44:35,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:44:35,224 INFO L495 AbstractCegarLoop]: Abstraction has 218 states and 348 transitions. [2022-07-19 18:44:35,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 13.5) internal successors, (27), 2 states have internal predecessors, (27), 2 states have call successors, (14), 1 states have call predecessors, (14), 1 states have return successors, (14), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 18:44:35,224 INFO L276 IsEmpty]: Start isEmpty. Operand 218 states and 348 transitions. [2022-07-19 18:44:35,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 18:44:35,231 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:44:35,231 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] [2022-07-19 18:44:35,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 18:44:35,231 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:44:35,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:44:35,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1062498259, now seen corresponding path program 1 times [2022-07-19 18:44:35,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:44:35,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137598851] [2022-07-19 18:44:35,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:44:35,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:44:45,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 18:44:46,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 18:44:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 18:44:46,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 18:44:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 18:44:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 18:44:46,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 18:44:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 18:44:46,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 18:44:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 18:44:46,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 18:44:46,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:46,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 18:44:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:47,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 18:44:47,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:47,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 18:44:47,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:47,016 INFO L134 CoverageAnalysis]: Checked inductivity of 364 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 18:44:47,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:44:47,017 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137598851] [2022-07-19 18:44:47,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137598851] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:44:47,017 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:44:47,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 18:44:47,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812095140] [2022-07-19 18:44:47,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:44:47,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:44:47,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:44:47,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:44:47,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 18:44:47,020 INFO L87 Difference]: Start difference. First operand 218 states and 348 transitions. Second operand has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2022-07-19 18:44:47,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:44:47,086 INFO L93 Difference]: Finished difference Result 432 states and 699 transitions. [2022-07-19 18:44:47,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 18:44:47,090 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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 94 [2022-07-19 18:44:47,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:44:47,095 INFO L225 Difference]: With dead ends: 432 [2022-07-19 18:44:47,097 INFO L226 Difference]: Without dead ends: 398 [2022-07-19 18:44:47,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 18:44:47,099 INFO L413 NwaCegarLoop]: 440 mSDtfsCounter, 307 mSDsluCounter, 785 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1225 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 [2022-07-19 18:44:47,100 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1225 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 18:44:47,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2022-07-19 18:44:47,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 397. [2022-07-19 18:44:47,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 397 states, 243 states have (on average 1.522633744855967) internal successors, (370), 247 states have internal predecessors, (370), 135 states have call successors, (135), 18 states have call predecessors, (135), 18 states have return successors, (143), 135 states have call predecessors, (143), 135 states have call successors, (143) [2022-07-19 18:44:47,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 397 states to 397 states and 648 transitions. [2022-07-19 18:44:47,157 INFO L78 Accepts]: Start accepts. Automaton has 397 states and 648 transitions. Word has length 94 [2022-07-19 18:44:47,157 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:44:47,157 INFO L495 AbstractCegarLoop]: Abstraction has 397 states and 648 transitions. [2022-07-19 18:44:47,157 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.75) internal successors, (27), 4 states have internal predecessors, (27), 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) [2022-07-19 18:44:47,158 INFO L276 IsEmpty]: Start isEmpty. Operand 397 states and 648 transitions. [2022-07-19 18:44:47,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-19 18:44:47,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:44:47,167 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:44:47,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 18:44:47,168 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:44:47,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:44:47,168 INFO L85 PathProgramCache]: Analyzing trace with hash -800885455, now seen corresponding path program 1 times [2022-07-19 18:44:47,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:44:47,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636994597] [2022-07-19 18:44:47,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:44:47,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:44:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 18:44:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 18:44:57,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:44:57,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 18:44:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:44:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 18:44:57,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 18:44:57,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:44:57,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 18:44:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:44:57,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 18:44:57,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 18:44:57,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:44:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 18:44:57,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 18:44:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 18:44:57,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 18:44:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 18:44:57,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 18:44:57,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 18:44:57,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 18:44:57,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 18:44:57,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-19 18:44:57,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 18:44:57,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-19 18:44:57,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-19 18:44:57,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 18:44:57,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:44:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-07-19 18:44:57,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:44:57,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636994597] [2022-07-19 18:44:57,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636994597] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:44:57,627 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:44:57,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 18:44:57,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170288118] [2022-07-19 18:44:57,628 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:44:57,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:44:57,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:44:57,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:44:57,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:44:57,631 INFO L87 Difference]: Start difference. First operand 397 states and 648 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 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) [2022-07-19 18:44:59,650 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 [] [2022-07-19 18:45:01,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:45:01,633 INFO L93 Difference]: Finished difference Result 1402 states and 2348 transitions. [2022-07-19 18:45:01,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 18:45:01,634 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 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 183 [2022-07-19 18:45:01,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:45:01,642 INFO L225 Difference]: With dead ends: 1402 [2022-07-19 18:45:01,642 INFO L226 Difference]: Without dead ends: 1014 [2022-07-19 18:45:01,645 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=277, Unknown=0, NotChecked=0, Total=380 [2022-07-19 18:45:01,646 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 708 mSDsluCounter, 1359 mSDsCounter, 0 mSdLazyCounter, 1265 mSolverCounterSat, 534 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 754 SdHoareTripleChecker+Valid, 1810 SdHoareTripleChecker+Invalid, 1800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 534 IncrementalHoareTripleChecker+Valid, 1265 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-19 18:45:01,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [754 Valid, 1810 Invalid, 1800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [534 Valid, 1265 Invalid, 1 Unknown, 0 Unchecked, 3.7s Time] [2022-07-19 18:45:01,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1014 states. [2022-07-19 18:45:01,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1014 to 893. [2022-07-19 18:45:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 893 states, 542 states have (on average 1.529520295202952) internal successors, (829), 559 states have internal predecessors, (829), 307 states have call successors, (307), 36 states have call predecessors, (307), 43 states have return successors, (350), 307 states have call predecessors, (350), 307 states have call successors, (350) [2022-07-19 18:45:01,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 893 states to 893 states and 1486 transitions. [2022-07-19 18:45:01,721 INFO L78 Accepts]: Start accepts. Automaton has 893 states and 1486 transitions. Word has length 183 [2022-07-19 18:45:01,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:45:01,722 INFO L495 AbstractCegarLoop]: Abstraction has 893 states and 1486 transitions. [2022-07-19 18:45:01,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 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) [2022-07-19 18:45:01,722 INFO L276 IsEmpty]: Start isEmpty. Operand 893 states and 1486 transitions. [2022-07-19 18:45:01,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-19 18:45:01,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:45:01,731 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:45:01,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 18:45:01,731 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:45:01,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:45:01,732 INFO L85 PathProgramCache]: Analyzing trace with hash -856649123, now seen corresponding path program 1 times [2022-07-19 18:45:01,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:45:01,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573212900] [2022-07-19 18:45:01,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:45:01,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:45:07,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 18:45:10,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 18:45:10,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:10,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 18:45:10,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:10,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 18:45:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 18:45:10,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:10,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 18:45:10,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:10,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 18:45:10,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 18:45:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:10,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 18:45:10,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 18:45:10,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 18:45:10,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 18:45:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 18:45:10,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 18:45:10,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 18:45:10,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 18:45:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 18:45:10,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-19 18:45:10,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 18:45:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-19 18:45:10,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-19 18:45:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 18:45:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:10,891 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-07-19 18:45:10,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:45:10,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573212900] [2022-07-19 18:45:10,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573212900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:45:10,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 18:45:10,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 18:45:10,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350347081] [2022-07-19 18:45:10,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:45:10,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 18:45:10,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:45:10,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 18:45:10,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 18:45:10,894 INFO L87 Difference]: Start difference. First operand 893 states and 1486 transitions. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 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) [2022-07-19 18:45:12,914 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 [] [2022-07-19 18:45:14,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:45:14,760 INFO L93 Difference]: Finished difference Result 1883 states and 3132 transitions. [2022-07-19 18:45:14,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 18:45:14,760 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 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 183 [2022-07-19 18:45:14,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:45:14,767 INFO L225 Difference]: With dead ends: 1883 [2022-07-19 18:45:14,767 INFO L226 Difference]: Without dead ends: 959 [2022-07-19 18:45:14,772 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 [2022-07-19 18:45:14,776 INFO L413 NwaCegarLoop]: 451 mSDtfsCounter, 855 mSDsluCounter, 1080 mSDsCounter, 0 mSdLazyCounter, 1168 mSolverCounterSat, 452 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 901 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 1621 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 452 IncrementalHoareTripleChecker+Valid, 1168 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 18:45:14,778 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [901 Valid, 1531 Invalid, 1621 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [452 Valid, 1168 Invalid, 1 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 18:45:14,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 959 states. [2022-07-19 18:45:14,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 959 to 875. [2022-07-19 18:45:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 875 states, 532 states have (on average 1.5244360902255638) internal successors, (811), 549 states have internal predecessors, (811), 299 states have call successors, (299), 35 states have call predecessors, (299), 43 states have return successors, (335), 300 states have call predecessors, (335), 299 states have call successors, (335) [2022-07-19 18:45:14,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 875 states to 875 states and 1445 transitions. [2022-07-19 18:45:14,845 INFO L78 Accepts]: Start accepts. Automaton has 875 states and 1445 transitions. Word has length 183 [2022-07-19 18:45:14,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:45:14,845 INFO L495 AbstractCegarLoop]: Abstraction has 875 states and 1445 transitions. [2022-07-19 18:45:14,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 6 states have internal predecessors, (55), 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) [2022-07-19 18:45:14,846 INFO L276 IsEmpty]: Start isEmpty. Operand 875 states and 1445 transitions. [2022-07-19 18:45:14,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-19 18:45:14,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:45:14,856 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 18:45:14,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 18:45:14,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:45:14,858 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:45:14,858 INFO L85 PathProgramCache]: Analyzing trace with hash -1909419641, now seen corresponding path program 1 times [2022-07-19 18:45:14,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:45:14,858 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703399304] [2022-07-19 18:45:14,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:45:14,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:45:27,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 18:45:30,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 18:45:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:30,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 18:45:30,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 18:45:30,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 18:45:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:30,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 18:45:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:30,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 18:45:30,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 18:45:30,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:30,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 18:45:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 18:45:30,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:30,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 18:45:30,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 18:45:31,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 18:45:31,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 18:45:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 18:45:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 18:45:31,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-19 18:45:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-19 18:45:31,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2022-07-19 18:45:31,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2022-07-19 18:45:31,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 169 [2022-07-19 18:45:31,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 175 [2022-07-19 18:45:31,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:31,043 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 9 proven. 11 refuted. 0 times theorem prover too weak. 734 trivial. 0 not checked. [2022-07-19 18:45:31,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:45:31,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703399304] [2022-07-19 18:45:31,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703399304] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 18:45:31,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1710886524] [2022-07-19 18:45:31,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:45:31,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 18:45:31,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:45:31,051 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) [2022-07-19 18:45:31,078 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 18:45:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:36,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 17177 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-19 18:45:37,019 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 18:45:37,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 18:45:37,077 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 18:45:37,149 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 18:45:37,156 INFO L134 CoverageAnalysis]: Checked inductivity of 754 backedges. 280 proven. 0 refuted. 0 times theorem prover too weak. 474 trivial. 0 not checked. [2022-07-19 18:45:37,156 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 18:45:37,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1710886524] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 18:45:37,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 18:45:37,156 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [13] total 15 [2022-07-19 18:45:37,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890972830] [2022-07-19 18:45:37,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 18:45:37,157 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 18:45:37,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:45:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 18:45:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-19 18:45:37,158 INFO L87 Difference]: Start difference. First operand 875 states and 1445 transitions. Second operand has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-19 18:45:37,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:45:37,312 INFO L93 Difference]: Finished difference Result 1357 states and 2190 transitions. [2022-07-19 18:45:37,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 18:45:37,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) Word has length 183 [2022-07-19 18:45:37,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:45:37,318 INFO L225 Difference]: With dead ends: 1357 [2022-07-19 18:45:37,319 INFO L226 Difference]: Without dead ends: 794 [2022-07-19 18:45:37,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 249 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2022-07-19 18:45:37,322 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 399 mSDsluCounter, 732 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 413 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 18:45:37,323 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [413 Valid, 1197 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 18:45:37,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-07-19 18:45:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 692. [2022-07-19 18:45:37,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 428 states have (on average 1.4789719626168225) internal successors, (633), 441 states have internal predecessors, (633), 220 states have call successors, (220), 35 states have call predecessors, (220), 43 states have return successors, (250), 221 states have call predecessors, (250), 220 states have call successors, (250) [2022-07-19 18:45:37,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 1103 transitions. [2022-07-19 18:45:37,365 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 1103 transitions. Word has length 183 [2022-07-19 18:45:37,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:45:37,365 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 1103 transitions. [2022-07-19 18:45:37,365 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.5) internal successors, (58), 4 states have internal predecessors, (58), 4 states have call successors, (23), 2 states have call predecessors, (23), 3 states have return successors, (23), 3 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-19 18:45:37,366 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 1103 transitions. [2022-07-19 18:45:37,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-19 18:45:37,372 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:45:37,372 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 5, 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] [2022-07-19 18:45:37,444 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 18:45:37,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 18:45:37,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:45:37,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:45:37,588 INFO L85 PathProgramCache]: Analyzing trace with hash 1126606325, now seen corresponding path program 1 times [2022-07-19 18:45:37,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:45:37,588 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859849] [2022-07-19 18:45:37,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:45:37,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:45:47,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 18:45:48,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 18:45:48,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:48,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 18:45:48,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:48,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 18:45:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 18:45:48,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:48,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 18:45:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 18:45:48,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:48,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 18:45:48,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 18:45:48,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:45:48,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 18:45:48,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 18:45:48,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 18:45:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 18:45:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 18:45:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 18:45:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 18:45:48,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 18:45:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-19 18:45:48,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 18:45:48,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-19 18:45:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-19 18:45:48,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-19 18:45:48,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-19 18:45:48,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:48,790 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 755 trivial. 0 not checked. [2022-07-19 18:45:48,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:45:48,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859849] [2022-07-19 18:45:48,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859849] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 18:45:48,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [821452832] [2022-07-19 18:45:48,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:45:48,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 18:45:48,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:45:48,796 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) [2022-07-19 18:45:48,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 18:45:55,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:45:55,211 INFO L263 TraceCheckSpWp]: Trace formula consists of 17321 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 18:45:55,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 18:45:55,402 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 349 proven. 6 refuted. 0 times theorem prover too weak. 403 trivial. 0 not checked. [2022-07-19 18:45:55,402 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 18:45:55,810 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 12 proven. 9 refuted. 0 times theorem prover too weak. 737 trivial. 0 not checked. [2022-07-19 18:45:55,810 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [821452832] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 18:45:55,810 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 18:45:55,811 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 7, 8] total 22 [2022-07-19 18:45:55,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008765963] [2022-07-19 18:45:55,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 18:45:55,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 18:45:55,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:45:55,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 18:45:55,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=390, Unknown=0, NotChecked=0, Total=462 [2022-07-19 18:45:55,813 INFO L87 Difference]: Start difference. First operand 692 states and 1103 transitions. Second operand has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 17 states have internal predecessors, (109), 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) [2022-07-19 18:45:57,852 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 [] [2022-07-19 18:46:17,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:46:17,628 INFO L93 Difference]: Finished difference Result 4962 states and 8452 transitions. [2022-07-19 18:46:17,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 188 states. [2022-07-19 18:46:17,629 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 17 states have internal predecessors, (109), 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 187 [2022-07-19 18:46:17,629 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:46:17,661 INFO L225 Difference]: With dead ends: 4962 [2022-07-19 18:46:17,662 INFO L226 Difference]: Without dead ends: 4268 [2022-07-19 18:46:17,680 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 671 GetRequests, 474 SyntacticMatches, 1 SemanticMatches, 196 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16517 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=4644, Invalid=34362, Unknown=0, NotChecked=0, Total=39006 [2022-07-19 18:46:17,681 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 6063 mSDsluCounter, 2765 mSDsCounter, 0 mSdLazyCounter, 12066 mSolverCounterSat, 10066 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 14.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6084 SdHoareTripleChecker+Valid, 3441 SdHoareTripleChecker+Invalid, 22133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 10066 IncrementalHoareTripleChecker+Valid, 12066 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.0s IncrementalHoareTripleChecker+Time [2022-07-19 18:46:17,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6084 Valid, 3441 Invalid, 22133 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [10066 Valid, 12066 Invalid, 1 Unknown, 0 Unchecked, 16.0s Time] [2022-07-19 18:46:17,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2022-07-19 18:46:17,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 3652. [2022-07-19 18:46:17,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3652 states, 2300 states have (on average 1.2978260869565217) internal successors, (2985), 2242 states have internal predecessors, (2985), 1128 states have call successors, (1128), 137 states have call predecessors, (1128), 223 states have return successors, (1731), 1276 states have call predecessors, (1731), 1128 states have call successors, (1731) [2022-07-19 18:46:17,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3652 states to 3652 states and 5844 transitions. [2022-07-19 18:46:17,984 INFO L78 Accepts]: Start accepts. Automaton has 3652 states and 5844 transitions. Word has length 187 [2022-07-19 18:46:17,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:46:17,984 INFO L495 AbstractCegarLoop]: Abstraction has 3652 states and 5844 transitions. [2022-07-19 18:46:17,985 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 4.954545454545454) internal successors, (109), 17 states have internal predecessors, (109), 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) [2022-07-19 18:46:17,985 INFO L276 IsEmpty]: Start isEmpty. Operand 3652 states and 5844 transitions. [2022-07-19 18:46:18,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-19 18:46:18,013 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:46:18,013 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 3, 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] [2022-07-19 18:46:18,103 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 18:46:18,239 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-07-19 18:46:18,240 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:46:18,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:46:18,240 INFO L85 PathProgramCache]: Analyzing trace with hash 734458644, now seen corresponding path program 1 times [2022-07-19 18:46:18,240 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:46:18,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853310871] [2022-07-19 18:46:18,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:46:18,240 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 18:46:28,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:29,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 18:46:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 18:46:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:46:30,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 18:46:30,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:46:30,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 18:46:30,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 18:46:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:46:30,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 18:46:30,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 18:46:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:46:30,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 18:46:30,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 18:46:30,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 18:46:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 18:46:30,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 18:46:30,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 18:46:30,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 18:46:30,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 18:46:30,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-19 18:46:30,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 137 [2022-07-19 18:46:30,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 18:46:30,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-19 18:46:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 18:46:30,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2022-07-19 18:46:30,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-19 18:46:30,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-19 18:46:30,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-19 18:46:30,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:30,175 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 756 trivial. 0 not checked. [2022-07-19 18:46:30,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 18:46:30,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853310871] [2022-07-19 18:46:30,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853310871] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 18:46:30,176 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087287160] [2022-07-19 18:46:30,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:46:30,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 18:46:30,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 18:46:30,180 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) [2022-07-19 18:46:30,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 18:46:37,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 18:46:37,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 17390 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-19 18:46:37,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 18:46:38,071 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 346 proven. 2 refuted. 0 times theorem prover too weak. 410 trivial. 0 not checked. [2022-07-19 18:46:38,072 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 18:46:38,482 INFO L134 CoverageAnalysis]: Checked inductivity of 758 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 754 trivial. 0 not checked. [2022-07-19 18:46:38,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087287160] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 18:46:38,482 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 18:46:38,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 23 [2022-07-19 18:46:38,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099693793] [2022-07-19 18:46:38,482 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 18:46:38,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 18:46:38,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 18:46:38,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 18:46:38,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=404, Unknown=0, NotChecked=0, Total=506 [2022-07-19 18:46:38,484 INFO L87 Difference]: Start difference. First operand 3652 states and 5844 transitions. Second operand has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 19 states have internal predecessors, (111), 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) [2022-07-19 18:46:40,508 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 18:46:42,524 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 18:46:43,885 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.34s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 18:46:45,910 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 18:46:47,134 WARN L534 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.21s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2022-07-19 18:46:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 18:46:52,887 INFO L93 Difference]: Finished difference Result 11746 states and 19082 transitions. [2022-07-19 18:46:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 18:46:52,887 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 19 states have internal predecessors, (111), 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 187 [2022-07-19 18:46:52,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 18:46:52,943 INFO L225 Difference]: With dead ends: 11746 [2022-07-19 18:46:52,944 INFO L226 Difference]: Without dead ends: 8061 [2022-07-19 18:46:52,973 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 465 GetRequests, 419 SyntacticMatches, 1 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=427, Invalid=1735, Unknown=0, NotChecked=0, Total=2162 [2022-07-19 18:46:52,974 INFO L413 NwaCegarLoop]: 774 mSDtfsCounter, 1891 mSDsluCounter, 3279 mSDsCounter, 0 mSdLazyCounter, 6052 mSolverCounterSat, 1785 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 12.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2050 SdHoareTripleChecker+Valid, 4053 SdHoareTripleChecker+Invalid, 7840 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1785 IncrementalHoareTripleChecker+Valid, 6052 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 13.4s IncrementalHoareTripleChecker+Time [2022-07-19 18:46:52,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2050 Valid, 4053 Invalid, 7840 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1785 Valid, 6052 Invalid, 3 Unknown, 0 Unchecked, 13.4s Time] [2022-07-19 18:46:52,981 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8061 states. [2022-07-19 18:46:53,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8061 to 7241. [2022-07-19 18:46:53,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7241 states, 4511 states have (on average 1.2977166925293726) internal successors, (5854), 4444 states have internal predecessors, (5854), 2327 states have call successors, (2327), 243 states have call predecessors, (2327), 402 states have return successors, (3539), 2565 states have call predecessors, (3539), 2327 states have call successors, (3539) [2022-07-19 18:46:53,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7241 states to 7241 states and 11720 transitions. [2022-07-19 18:46:53,675 INFO L78 Accepts]: Start accepts. Automaton has 7241 states and 11720 transitions. Word has length 187 [2022-07-19 18:46:53,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 18:46:53,676 INFO L495 AbstractCegarLoop]: Abstraction has 7241 states and 11720 transitions. [2022-07-19 18:46:53,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 19 states have internal predecessors, (111), 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) [2022-07-19 18:46:53,689 INFO L276 IsEmpty]: Start isEmpty. Operand 7241 states and 11720 transitions. [2022-07-19 18:46:53,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 188 [2022-07-19 18:46:53,730 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 18:46:53,730 INFO L195 NwaCegarLoop]: trace histogram [19, 19, 19, 5, 5, 5, 5, 5, 5, 3, 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] [2022-07-19 18:46:53,815 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 18:46:53,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 18:46:53,944 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 18:46:53,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 18:46:53,944 INFO L85 PathProgramCache]: Analyzing trace with hash 916191893, now seen corresponding path program 1 times [2022-07-19 18:46:53,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 18:46:53,944 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269700247] [2022-07-19 18:46:53,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 18:46:53,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms