./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-pthread/cs_lamport.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 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_lamport.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 d49d34698411f85a0a6e83adb869f73bcb1d6aade5262b0ab5e3122db7000276 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 19:20:14,559 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 19:20:14,560 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 19:20:14,593 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 19:20:14,594 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 19:20:14,595 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 19:20:14,596 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 19:20:14,600 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 19:20:14,601 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 19:20:14,605 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 19:20:14,605 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 19:20:14,607 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 19:20:14,607 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 19:20:14,609 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 19:20:14,609 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 19:20:14,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 19:20:14,612 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 19:20:14,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 19:20:14,615 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 19:20:14,619 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 19:20:14,620 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 19:20:14,621 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 19:20:14,621 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 19:20:14,622 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 19:20:14,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 19:20:14,628 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 19:20:14,628 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 19:20:14,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 19:20:14,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 19:20:14,630 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 19:20:14,631 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 19:20:14,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 19:20:14,633 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 19:20:14,633 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 19:20:14,634 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 19:20:14,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 19:20:14,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 19:20:14,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 19:20:14,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 19:20:14,636 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 19:20:14,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 19:20:14,638 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 19:20:14,639 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 19:20:14,667 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 19:20:14,668 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 19:20:14,668 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 19:20:14,668 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 19:20:14,668 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 19:20:14,669 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 19:20:14,669 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 19:20:14,669 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 19:20:14,669 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 19:20:14,670 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 19:20:14,670 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 19:20:14,670 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 19:20:14,670 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 19:20:14,671 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 19:20:14,671 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 19:20:14,671 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 19:20:14,671 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 19:20:14,671 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 19:20:14,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 19:20:14,672 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 19:20:14,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 19:20:14,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 19:20:14,673 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 19:20:14,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 19:20:14,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:20:14,673 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 19:20:14,673 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 19:20:14,674 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 19:20:14,674 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 19:20:14,674 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 19:20:14,674 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 19:20:14,674 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 19:20:14,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 19:20:14,675 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d49d34698411f85a0a6e83adb869f73bcb1d6aade5262b0ab5e3122db7000276 [2022-07-13 19:20:14,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 19:20:14,880 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 19:20:14,882 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 19:20:14,882 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 19:20:14,883 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 19:20:14,884 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-pthread/cs_lamport.i [2022-07-13 19:20:14,941 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a850dbf5/c78d56ef0edd421d84c5f07617b91d73/FLAG7653390e4 [2022-07-13 19:20:15,375 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 19:20:15,377 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-pthread/cs_lamport.i [2022-07-13 19:20:15,386 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a850dbf5/c78d56ef0edd421d84c5f07617b91d73/FLAG7653390e4 [2022-07-13 19:20:15,393 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0a850dbf5/c78d56ef0edd421d84c5f07617b91d73 [2022-07-13 19:20:15,398 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 19:20:15,399 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 19:20:15,404 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 19:20:15,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 19:20:15,406 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 19:20:15,407 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,407 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c82a447 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15, skipping insertion in model container [2022-07-13 19:20:15,408 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,412 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 19:20:15,453 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 19:20:15,650 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_lamport.i[23604,23617] [2022-07-13 19:20:15,741 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:20:15,750 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 19:20:15,784 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_lamport.i[23604,23617] [2022-07-13 19:20:15,835 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 19:20:15,863 INFO L208 MainTranslator]: Completed translation [2022-07-13 19:20:15,863 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15 WrapperNode [2022-07-13 19:20:15,863 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 19:20:15,865 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 19:20:15,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 19:20:15,865 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 19:20:15,871 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,892 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,922 INFO L137 Inliner]: procedures = 145, calls = 351, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 461 [2022-07-13 19:20:15,922 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 19:20:15,923 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 19:20:15,923 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 19:20:15,923 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 19:20:15,929 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,929 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,941 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,942 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,967 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,971 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:15,992 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 19:20:15,993 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 19:20:15,993 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 19:20:15,993 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 19:20:16,000 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (1/1) ... [2022-07-13 19:20:16,005 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 19:20:16,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:20:16,024 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) [2022-07-13 19:20:16,052 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 [2022-07-13 19:20:16,067 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-13 19:20:16,067 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-13 19:20:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-13 19:20:16,068 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-13 19:20:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 19:20:16,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-13 19:20:16,071 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-13 19:20:16,071 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_create [2022-07-13 19:20:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_create [2022-07-13 19:20:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-13 19:20:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_pthread_join [2022-07-13 19:20:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_pthread_join [2022-07-13 19:20:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-13 19:20:16,072 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~$Pointer$ [2022-07-13 19:20:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-13 19:20:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-13 19:20:16,072 INFO L130 BoogieDeclarations]: Found specification of procedure __CS_cs [2022-07-13 19:20:16,073 INFO L138 BoogieDeclarations]: Found implementation of procedure __CS_cs [2022-07-13 19:20:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 19:20:16,073 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 19:20:16,073 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 19:20:16,239 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 19:20:16,240 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 19:20:18,937 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 19:20:18,942 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 19:20:18,942 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2022-07-13 19:20:18,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:20:18 BoogieIcfgContainer [2022-07-13 19:20:18,944 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 19:20:18,945 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 19:20:18,945 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 19:20:18,947 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 19:20:18,947 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 07:20:15" (1/3) ... [2022-07-13 19:20:18,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16352a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:20:18, skipping insertion in model container [2022-07-13 19:20:18,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 07:20:15" (2/3) ... [2022-07-13 19:20:18,948 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@16352a14 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 07:20:18, skipping insertion in model container [2022-07-13 19:20:18,948 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 07:20:18" (3/3) ... [2022-07-13 19:20:18,949 INFO L111 eAbstractionObserver]: Analyzing ICFG cs_lamport.i [2022-07-13 19:20:18,958 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 19:20:18,959 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 19:20:18,992 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 19:20:18,996 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@4dd05b2e, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7fa513bb [2022-07-13 19:20:18,996 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 19:20:19,000 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 77 states have internal predecessors, (100), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-13 19:20:19,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-13 19:20:19,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:20:19,012 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:20:19,013 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:20:19,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:20:19,017 INFO L85 PathProgramCache]: Analyzing trace with hash -1647401659, now seen corresponding path program 1 times [2022-07-13 19:20:19,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:20:19,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1945722984] [2022-07-13 19:20:19,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:20:19,024 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:20:49,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-13 19:20:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-13 19:20:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-13 19:20:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-13 19:20:51,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-13 19:20:51,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 19:20:51,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 19:20:51,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-13 19:20:51,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 19:20:51,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 19:20:51,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 19:20:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 19:20:51,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 19:20:51,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 19:20:51,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 19:20:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 19:20:51,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-13 19:20:51,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 19:20:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 19:20:51,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-13 19:20:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 19:20:51,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-13 19:20:51,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:51,602 INFO L134 CoverageAnalysis]: Checked inductivity of 924 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-07-13 19:20:51,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:20:51,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1945722984] [2022-07-13 19:20:51,603 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1945722984] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:20:51,603 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:20:51,603 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:20:51,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162203750] [2022-07-13 19:20:51,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:20:51,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:20:51,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:20:51,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:20:51,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:20:51,630 INFO L87 Difference]: Start difference. First operand has 119 states, 76 states have (on average 1.3157894736842106) internal successors, (100), 77 states have internal predecessors, (100), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-13 19:20:51,707 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:20:51,708 INFO L93 Difference]: Finished difference Result 240 states and 384 transitions. [2022-07-13 19:20:51,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:20:51,725 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 144 [2022-07-13 19:20:51,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:20:51,730 INFO L225 Difference]: With dead ends: 240 [2022-07-13 19:20:51,731 INFO L226 Difference]: Without dead ends: 119 [2022-07-13 19:20:51,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 68 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:20:51,737 INFO L413 NwaCegarLoop]: 165 mSDtfsCounter, 4 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 328 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:20:51,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 328 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:20:51,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-13 19:20:51,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 116. [2022-07-13 19:20:51,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 74 states have internal predecessors, (93), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-13 19:20:51,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 165 transitions. [2022-07-13 19:20:51,795 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 165 transitions. Word has length 144 [2022-07-13 19:20:51,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:20:51,795 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 165 transitions. [2022-07-13 19:20:51,796 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-13 19:20:51,796 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 165 transitions. [2022-07-13 19:20:51,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-13 19:20:51,803 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:20:51,804 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:20:51,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 19:20:51,805 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:20:51,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:20:51,805 INFO L85 PathProgramCache]: Analyzing trace with hash 284229075, now seen corresponding path program 1 times [2022-07-13 19:20:51,806 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:20:51,806 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763425096] [2022-07-13 19:20:51,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:20:51,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:20:57,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-13 19:20:58,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:20:58,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 19:20:58,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 19:20:58,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 19:20:58,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 19:20:58,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 19:20:58,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 19:20:58,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 19:20:58,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:20:58,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 19:20:58,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 19:20:58,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:20:58,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 19:20:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 19:20:58,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 19:20:58,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:20:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 19:20:58,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 19:20:58,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 19:20:58,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 19:20:58,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 19:20:58,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:20:58,698 INFO L134 CoverageAnalysis]: Checked inductivity of 925 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-07-13 19:20:58,699 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:20:58,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763425096] [2022-07-13 19:20:58,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763425096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 19:20:58,699 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 19:20:58,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 19:20:58,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [376523286] [2022-07-13 19:20:58,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 19:20:58,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 19:20:58,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:20:58,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 19:20:58,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:20:58,703 INFO L87 Difference]: Start difference. First operand 116 states and 165 transitions. Second operand has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-13 19:20:58,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:20:58,740 INFO L93 Difference]: Finished difference Result 231 states and 330 transitions. [2022-07-13 19:20:58,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 19:20:58,741 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) Word has length 147 [2022-07-13 19:20:58,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:20:58,744 INFO L225 Difference]: With dead ends: 231 [2022-07-13 19:20:58,745 INFO L226 Difference]: Without dead ends: 118 [2022-07-13 19:20:58,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 19:20:58,748 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 1 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 321 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:20:58,749 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 321 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:20:58,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-13 19:20:58,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2022-07-13 19:20:58,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 75 states have (on average 1.2533333333333334) internal successors, (94), 75 states have internal predecessors, (94), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-13 19:20:58,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 166 transitions. [2022-07-13 19:20:58,760 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 166 transitions. Word has length 147 [2022-07-13 19:20:58,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:20:58,762 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 166 transitions. [2022-07-13 19:20:58,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.333333333333334) internal successors, (40), 3 states have internal predecessors, (40), 1 states have call successors, (22), 1 states have call predecessors, (22), 1 states have return successors, (22), 1 states have call predecessors, (22), 1 states have call successors, (22) [2022-07-13 19:20:58,762 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 166 transitions. [2022-07-13 19:20:58,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 19:20:58,767 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:20:58,767 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:20:58,768 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 19:20:58,768 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:20:58,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:20:58,768 INFO L85 PathProgramCache]: Analyzing trace with hash -2059588459, now seen corresponding path program 1 times [2022-07-13 19:20:58,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:20:58,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659472150] [2022-07-13 19:20:58,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:20:58,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:21:04,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 19:21:05,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-13 19:21:05,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-13 19:21:05,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-13 19:21:05,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 19:21:05,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 19:21:05,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-13 19:21:05,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 19:21:05,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 19:21:05,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 19:21:05,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 19:21:05,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-13 19:21:05,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 19:21:05,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 19:21:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 19:21:05,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 19:21:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 19:21:05,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-13 19:21:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-13 19:21:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 19:21:05,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 135 [2022-07-13 19:21:05,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 19:21:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:05,375 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-07-13 19:21:05,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:21:05,376 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659472150] [2022-07-13 19:21:05,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659472150] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:21:05,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482899321] [2022-07-13 19:21:05,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:21:05,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:21:05,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:21:05,379 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) [2022-07-13 19:21:05,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 19:21:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:21:34,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 101556 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 19:21:34,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 19:21:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-07-13 19:21:34,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-13 19:21:34,945 INFO L134 CoverageAnalysis]: Checked inductivity of 926 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 924 trivial. 0 not checked. [2022-07-13 19:21:34,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482899321] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-13 19:21:34,946 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-13 19:21:34,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 6 [2022-07-13 19:21:34,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181968705] [2022-07-13 19:21:34,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-13 19:21:34,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 19:21:34,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 19:21:34,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 19:21:34,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:21:34,947 INFO L87 Difference]: Start difference. First operand 117 states and 166 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2022-07-13 19:21:34,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 19:21:34,991 INFO L93 Difference]: Finished difference Result 235 states and 335 transitions. [2022-07-13 19:21:34,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-13 19:21:34,992 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) Word has length 149 [2022-07-13 19:21:34,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 19:21:34,994 INFO L225 Difference]: With dead ends: 235 [2022-07-13 19:21:34,994 INFO L226 Difference]: Without dead ends: 121 [2022-07-13 19:21:34,995 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 344 GetRequests, 339 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2022-07-13 19:21:34,997 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 3 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 480 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 19:21:34,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 480 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 19:21:34,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-07-13 19:21:35,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2022-07-13 19:21:35,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 79 states have (on average 1.240506329113924) internal successors, (98), 79 states have internal predecessors, (98), 36 states have call successors, (36), 5 states have call predecessors, (36), 5 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2022-07-13 19:21:35,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 170 transitions. [2022-07-13 19:21:35,018 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 170 transitions. Word has length 149 [2022-07-13 19:21:35,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 19:21:35,018 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 170 transitions. [2022-07-13 19:21:35,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 6 states have internal predecessors, (52), 1 states have call successors, (44), 2 states have call predecessors, (44), 2 states have return successors, (44), 1 states have call predecessors, (44), 1 states have call successors, (44) [2022-07-13 19:21:35,019 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 170 transitions. [2022-07-13 19:21:35,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2022-07-13 19:21:35,020 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 19:21:35,021 INFO L195 NwaCegarLoop]: trace histogram [22, 22, 22, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 19:21:35,235 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forcibly destroying the process [2022-07-13 19:21:35,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 137 [2022-07-13 19:21:35,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:21:35,283 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 19:21:35,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 19:21:35,284 INFO L85 PathProgramCache]: Analyzing trace with hash 409710745, now seen corresponding path program 2 times [2022-07-13 19:21:35,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 19:21:35,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894781363] [2022-07-13 19:21:35,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 19:21:35,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 19:22:18,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-13 19:22:19,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-13 19:22:19,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-13 19:22:19,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 19:22:19,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 19:22:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 19:22:19,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 19:22:19,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 19:22:19,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 19:22:19,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 19:22:19,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 19:22:19,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 19:22:19,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 19:22:19,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 19:22:19,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-13 19:22:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 19:22:19,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-13 19:22:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 19:22:19,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-13 19:22:19,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 19:22:19,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-13 19:22:19,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-13 19:22:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 19:22:19,839 INFO L134 CoverageAnalysis]: Checked inductivity of 934 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 933 trivial. 0 not checked. [2022-07-13 19:22:19,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 19:22:19,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894781363] [2022-07-13 19:22:19,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894781363] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 19:22:19,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [103619344] [2022-07-13 19:22:19,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-13 19:22:19,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 19:22:19,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 19:22:19,841 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) [2022-07-13 19:22:19,842 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process