./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 47ea0209 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/config/AutomizerReach.xml -i ../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY --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 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-47ea020 [2021-11-07 08:06:21,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-07 08:06:21,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-07 08:06:21,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-07 08:06:21,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-07 08:06:21,167 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-07 08:06:21,169 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-07 08:06:21,172 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-07 08:06:21,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-07 08:06:21,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-07 08:06:21,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-07 08:06:21,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-07 08:06:21,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-07 08:06:21,187 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-07 08:06:21,188 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-07 08:06:21,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-07 08:06:21,198 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-07 08:06:21,199 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-07 08:06:21,201 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-07 08:06:21,209 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-07 08:06:21,211 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-07 08:06:21,212 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-07 08:06:21,215 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-07 08:06:21,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-07 08:06:21,225 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-07 08:06:21,226 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-07 08:06:21,226 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-07 08:06:21,228 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-07 08:06:21,229 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-07 08:06:21,230 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-07 08:06:21,231 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-07 08:06:21,232 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-07 08:06:21,233 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-07 08:06:21,235 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-07 08:06:21,236 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-07 08:06:21,236 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-07 08:06:21,237 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-07 08:06:21,238 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-07 08:06:21,238 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-07 08:06:21,239 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-07 08:06:21,240 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-07 08:06:21,240 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-07 08:06:21,281 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-07 08:06:21,282 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-07 08:06:21,282 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-07 08:06:21,283 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-07 08:06:21,291 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-07 08:06:21,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-07 08:06:21,292 INFO L138 SettingsManager]: * Use SBE=true [2021-11-07 08:06:21,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-07 08:06:21,292 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-07 08:06:21,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-07 08:06:21,293 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-07 08:06:21,294 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-07 08:06:21,294 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-07 08:06:21,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-07 08:06:21,295 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-07 08:06:21,295 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-07 08:06:21,295 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-07 08:06:21,295 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-07 08:06:21,296 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-07 08:06:21,296 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-07 08:06:21,296 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-07 08:06:21,297 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-07 08:06:21,297 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:06:21,297 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-07 08:06:21,297 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-07 08:06:21,298 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-07 08:06:21,298 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-07 08:06:21,298 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-07 08:06:21,298 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-07 08:06:21,300 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-07 08:06:21,300 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-07 08:06:21,300 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-07 08:06:21,301 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 051706a1eb405a384d7cf371ab2d9b9605b94715fa3ad16d6c2eb8e3fbb8fc38 [2021-11-07 08:06:21,556 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-07 08:06:21,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-07 08:06:21,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-07 08:06:21,583 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-07 08:06:21,585 INFO L275 PluginConnector]: CDTParser initialized [2021-11-07 08:06:21,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/../../sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-11-07 08:06:21,656 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/data/7c377b07d/9e798f5f76c14fd8ae05086bc92817b3/FLAGd092d7b56 [2021-11-07 08:06:22,170 INFO L306 CDTParser]: Found 1 translation units. [2021-11-07 08:06:22,171 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i [2021-11-07 08:06:22,200 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/data/7c377b07d/9e798f5f76c14fd8ae05086bc92817b3/FLAGd092d7b56 [2021-11-07 08:06:22,679 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/data/7c377b07d/9e798f5f76c14fd8ae05086bc92817b3 [2021-11-07 08:06:22,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-07 08:06:22,684 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-07 08:06:22,716 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-07 08:06:22,717 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-07 08:06:22,720 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-07 08:06:22,721 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:06:22" (1/1) ... [2021-11-07 08:06:22,722 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8d90c64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:22, skipping insertion in model container [2021-11-07 08:06:22,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.11 08:06:22" (1/1) ... [2021-11-07 08:06:22,730 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-07 08:06:22,853 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-07 08:06:23,337 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2021-11-07 08:06:23,340 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:06:23,353 INFO L203 MainTranslator]: Completed pre-run [2021-11-07 08:06:23,397 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/sv-benchmarks/c/pthread-deagle/arithmetic_prog_bad.i[39758,39771] [2021-11-07 08:06:23,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-07 08:06:23,461 INFO L208 MainTranslator]: Completed translation [2021-11-07 08:06:23,462 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23 WrapperNode [2021-11-07 08:06:23,462 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-07 08:06:23,463 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-07 08:06:23,463 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-07 08:06:23,463 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-07 08:06:23,470 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,492 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-07 08:06:23,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-07 08:06:23,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-07 08:06:23,533 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-07 08:06:23,540 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,541 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,563 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,564 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,596 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,603 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-07 08:06:23,604 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-07 08:06:23,604 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-07 08:06:23,605 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-07 08:06:23,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (1/1) ... [2021-11-07 08:06:23,615 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-07 08:06:23,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:23,638 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-07 08:06:23,641 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-07 08:06:23,674 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-07 08:06:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-07 08:06:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-07 08:06:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-07 08:06:23,675 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2021-11-07 08:06:23,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2021-11-07 08:06:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2021-11-07 08:06:23,676 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2021-11-07 08:06:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-07 08:06:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2021-11-07 08:06:23,676 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-07 08:06:23,677 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-07 08:06:23,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-07 08:06:23,678 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2021-11-07 08:06:24,032 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-07 08:06:24,032 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-07 08:06:24,034 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:24 BoogieIcfgContainer [2021-11-07 08:06:24,034 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-07 08:06:24,036 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-07 08:06:24,036 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-07 08:06:24,039 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-07 08:06:24,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.11 08:06:22" (1/3) ... [2021-11-07 08:06:24,040 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314a389b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:06:24, skipping insertion in model container [2021-11-07 08:06:24,040 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.11 08:06:23" (2/3) ... [2021-11-07 08:06:24,041 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@314a389b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.11 08:06:24, skipping insertion in model container [2021-11-07 08:06:24,041 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:24" (3/3) ... [2021-11-07 08:06:24,042 INFO L111 eAbstractionObserver]: Analyzing ICFG arithmetic_prog_bad.i [2021-11-07 08:06:24,047 WARN L149 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2021-11-07 08:06:24,047 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-07 08:06:24,047 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-07 08:06:24,047 INFO L513 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2021-11-07 08:06:24,084 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,085 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,085 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,085 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,085 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,086 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,086 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,086 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,086 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,087 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,088 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,088 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,088 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,088 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,089 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,090 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,091 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,092 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,093 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,094 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,094 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,094 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,095 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,095 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,095 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,096 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,096 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,097 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,097 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,097 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,097 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,098 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,099 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,099 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,099 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,099 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,100 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,100 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,100 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,101 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,102 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,102 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,103 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,103 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,104 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,105 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,106 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,106 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,106 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,107 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,107 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,107 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,108 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,111 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,111 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet7| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,111 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~nondet6| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,112 WARN L322 ript$VariableManager]: TermVariabe thread1Thread1of1ForFork0_~i~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post8| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,112 WARN L322 ript$VariableManager]: TermVariabe |thread1Thread1of1ForFork0_#t~post9| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,117 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,117 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post12| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,117 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet11| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~post13| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#t~nondet10| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,118 WARN L322 ript$VariableManager]: TermVariabe |thread2Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,118 WARN L322 ript$VariableManager]: TermVariabe thread2Thread1of1ForFork1_~j~0 not constructed by VariableManager. Cannot ensure absence of name clashes. [2021-11-07 08:06:24,127 INFO L148 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2021-11-07 08:06:24,175 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-07 08:06:24,181 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-07 08:06:24,181 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-07 08:06:24,196 INFO L74 FinitePrefix]: Start finitePrefix. Operand has 125 places, 128 transitions, 272 flow [2021-11-07 08:06:24,296 INFO L129 PetriNetUnfolder]: 10/126 cut-off events. [2021-11-07 08:06:24,296 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 08:06:24,302 INFO L84 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 126 events. 10/126 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 149 event pairs, 0 based on Foata normal form. 0/115 useless extension candidates. Maximal degree in co-relation 79. Up to 3 conditions per place. [2021-11-07 08:06:24,303 INFO L82 GeneralOperation]: Start removeDead. Operand has 125 places, 128 transitions, 272 flow [2021-11-07 08:06:24,311 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 115 transitions, 242 flow [2021-11-07 08:06:24,362 INFO L129 PetriNetUnfolder]: 8/114 cut-off events. [2021-11-07 08:06:24,362 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 08:06:24,363 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:24,363 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:24,364 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:24,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:24,382 INFO L85 PathProgramCache]: Analyzing trace with hash -620495321, now seen corresponding path program 1 times [2021-11-07 08:06:24,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:24,391 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [91395025] [2021-11-07 08:06:24,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:24,410 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:24,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:24,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:24,722 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:24,723 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [91395025] [2021-11-07 08:06:24,724 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [91395025] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:24,725 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:24,725 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-07 08:06:24,726 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1254056823] [2021-11-07 08:06:24,738 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-07 08:06:24,738 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:24,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-07 08:06:24,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-07 08:06:24,756 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 122 out of 128 [2021-11-07 08:06:24,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 115 transitions, 242 flow. Second operand has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:24,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:06:24,760 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 122 of 128 [2021-11-07 08:06:24,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:06:24,789 INFO L129 PetriNetUnfolder]: 4/111 cut-off events. [2021-11-07 08:06:24,789 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2021-11-07 08:06:24,790 INFO L84 FinitePrefix]: Finished finitePrefix Result has 121 conditions, 111 events. 4/111 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 131 event pairs, 0 based on Foata normal form. 4/111 useless extension candidates. Maximal degree in co-relation 117. Up to 2 conditions per place. [2021-11-07 08:06:24,792 INFO L132 encePairwiseOnDemand]: 124/128 looper letters, 0 selfloop transitions, 0 changer transitions 0/111 dead transitions. [2021-11-07 08:06:24,792 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 111 transitions, 234 flow [2021-11-07 08:06:24,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-07 08:06:24,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2021-11-07 08:06:24,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 248 transitions. [2021-11-07 08:06:24,804 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.96875 [2021-11-07 08:06:24,805 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 248 transitions. [2021-11-07 08:06:24,806 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 248 transitions. [2021-11-07 08:06:24,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:06:24,810 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 248 transitions. [2021-11-07 08:06:24,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 124.0) internal successors, (248), 2 states have internal predecessors, (248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:24,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:24,829 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:24,831 INFO L186 Difference]: Start difference. First operand has 114 places, 115 transitions, 242 flow. Second operand 2 states and 248 transitions. [2021-11-07 08:06:24,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 111 transitions, 234 flow [2021-11-07 08:06:24,835 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 111 places, 111 transitions, 226 flow, removed 0 selfloop flow, removed 4 redundant places. [2021-11-07 08:06:24,840 INFO L242 Difference]: Finished difference. Result has 111 places, 111 transitions, 226 flow [2021-11-07 08:06:24,843 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=111, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=226, PETRI_PLACES=111, PETRI_TRANSITIONS=111} [2021-11-07 08:06:24,843 INFO L334 CegarLoopForPetriNet]: 114 programPoint places, -3 predicate places. [2021-11-07 08:06:24,844 INFO L470 AbstractCegarLoop]: Abstraction has has 111 places, 111 transitions, 226 flow [2021-11-07 08:06:24,844 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 123.0) internal successors, (246), 2 states have internal predecessors, (246), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:24,844 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:24,844 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:24,845 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-07 08:06:24,845 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:24,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:24,846 INFO L85 PathProgramCache]: Analyzing trace with hash -1153340537, now seen corresponding path program 1 times [2021-11-07 08:06:24,846 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:24,846 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814431505] [2021-11-07 08:06:24,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:24,847 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:24,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:25,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:25,000 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:25,001 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814431505] [2021-11-07 08:06:25,001 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814431505] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:25,001 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:25,001 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:06:25,001 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809816867] [2021-11-07 08:06:25,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:06:25,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:25,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:06:25,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:25,007 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 128 [2021-11-07 08:06:25,007 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 111 transitions, 226 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,007 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:06:25,008 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 128 [2021-11-07 08:06:25,008 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:06:25,056 INFO L129 PetriNetUnfolder]: 5/126 cut-off events. [2021-11-07 08:06:25,056 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2021-11-07 08:06:25,058 INFO L84 FinitePrefix]: Finished finitePrefix Result has 144 conditions, 126 events. 5/126 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 130 event pairs, 0 based on Foata normal form. 0/121 useless extension candidates. Maximal degree in co-relation 141. Up to 10 conditions per place. [2021-11-07 08:06:25,059 INFO L132 encePairwiseOnDemand]: 125/128 looper letters, 11 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2021-11-07 08:06:25,059 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 113 places, 115 transitions, 260 flow [2021-11-07 08:06:25,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:06:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 08:06:25,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 353 transitions. [2021-11-07 08:06:25,063 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9192708333333334 [2021-11-07 08:06:25,063 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 353 transitions. [2021-11-07 08:06:25,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 353 transitions. [2021-11-07 08:06:25,064 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:06:25,064 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 353 transitions. [2021-11-07 08:06:25,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.66666666666667) internal successors, (353), 3 states have internal predecessors, (353), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,068 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,069 INFO L186 Difference]: Start difference. First operand has 111 places, 111 transitions, 226 flow. Second operand 3 states and 353 transitions. [2021-11-07 08:06:25,069 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 113 places, 115 transitions, 260 flow [2021-11-07 08:06:25,070 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 115 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-07 08:06:25,074 INFO L242 Difference]: Finished difference. Result has 114 places, 112 transitions, 238 flow [2021-11-07 08:06:25,074 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=238, PETRI_PLACES=114, PETRI_TRANSITIONS=112} [2021-11-07 08:06:25,075 INFO L334 CegarLoopForPetriNet]: 114 programPoint places, 0 predicate places. [2021-11-07 08:06:25,075 INFO L470 AbstractCegarLoop]: Abstraction has has 114 places, 112 transitions, 238 flow [2021-11-07 08:06:25,076 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,076 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:25,076 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:25,076 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-07 08:06:25,076 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:25,077 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:25,077 INFO L85 PathProgramCache]: Analyzing trace with hash 2058875730, now seen corresponding path program 1 times [2021-11-07 08:06:25,077 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:25,078 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28497784] [2021-11-07 08:06:25,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:25,078 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:25,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:25,172 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:06:25,172 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:25,172 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28497784] [2021-11-07 08:06:25,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28497784] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:25,173 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:25,173 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:06:25,173 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551893531] [2021-11-07 08:06:25,174 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:06:25,174 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:25,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:06:25,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:25,177 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 115 out of 128 [2021-11-07 08:06:25,177 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 112 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,178 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:06:25,178 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 115 of 128 [2021-11-07 08:06:25,178 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:06:25,263 INFO L129 PetriNetUnfolder]: 6/140 cut-off events. [2021-11-07 08:06:25,263 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-07 08:06:25,267 INFO L84 FinitePrefix]: Finished finitePrefix Result has 162 conditions, 140 events. 6/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 183 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 157. Up to 8 conditions per place. [2021-11-07 08:06:25,269 INFO L132 encePairwiseOnDemand]: 125/128 looper letters, 8 selfloop transitions, 2 changer transitions 0/115 dead transitions. [2021-11-07 08:06:25,270 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 115 transitions, 264 flow [2021-11-07 08:06:25,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:06:25,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 08:06:25,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2021-11-07 08:06:25,274 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9270833333333334 [2021-11-07 08:06:25,274 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2021-11-07 08:06:25,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2021-11-07 08:06:25,276 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:06:25,276 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2021-11-07 08:06:25,278 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,282 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,283 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,284 INFO L186 Difference]: Start difference. First operand has 114 places, 112 transitions, 238 flow. Second operand 3 states and 356 transitions. [2021-11-07 08:06:25,284 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 116 places, 115 transitions, 264 flow [2021-11-07 08:06:25,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 115 transitions, 262 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-07 08:06:25,294 INFO L242 Difference]: Finished difference. Result has 116 places, 113 transitions, 248 flow [2021-11-07 08:06:25,294 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=236, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=112, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=116, PETRI_TRANSITIONS=113} [2021-11-07 08:06:25,295 INFO L334 CegarLoopForPetriNet]: 114 programPoint places, 2 predicate places. [2021-11-07 08:06:25,295 INFO L470 AbstractCegarLoop]: Abstraction has has 116 places, 113 transitions, 248 flow [2021-11-07 08:06:25,296 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 116.33333333333333) internal successors, (349), 3 states have internal predecessors, (349), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,296 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:25,296 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:25,297 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-07 08:06:25,297 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:25,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:25,298 INFO L85 PathProgramCache]: Analyzing trace with hash 479232848, now seen corresponding path program 1 times [2021-11-07 08:06:25,298 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:25,298 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492980148] [2021-11-07 08:06:25,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:25,299 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:25,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:25,448 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:06:25,450 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:25,451 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492980148] [2021-11-07 08:06:25,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492980148] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:25,452 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:25,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-07 08:06:25,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [249253021] [2021-11-07 08:06:25,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-07 08:06:25,455 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:25,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-07 08:06:25,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-07 08:06:25,460 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 112 out of 128 [2021-11-07 08:06:25,461 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 113 transitions, 248 flow. Second operand has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,461 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:06:25,461 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 112 of 128 [2021-11-07 08:06:25,462 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:06:25,583 INFO L129 PetriNetUnfolder]: 77/401 cut-off events. [2021-11-07 08:06:25,583 INFO L130 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2021-11-07 08:06:25,586 INFO L84 FinitePrefix]: Finished finitePrefix Result has 566 conditions, 401 events. 77/401 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 1742 event pairs, 26 based on Foata normal form. 0/367 useless extension candidates. Maximal degree in co-relation 560. Up to 88 conditions per place. [2021-11-07 08:06:25,589 INFO L132 encePairwiseOnDemand]: 123/128 looper letters, 11 selfloop transitions, 3 changer transitions 0/117 dead transitions. [2021-11-07 08:06:25,589 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 117 transitions, 284 flow [2021-11-07 08:06:25,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-07 08:06:25,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2021-11-07 08:06:25,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 352 transitions. [2021-11-07 08:06:25,592 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9166666666666666 [2021-11-07 08:06:25,592 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 352 transitions. [2021-11-07 08:06:25,592 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 352 transitions. [2021-11-07 08:06:25,592 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:06:25,593 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 352 transitions. [2021-11-07 08:06:25,594 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 117.33333333333333) internal successors, (352), 3 states have internal predecessors, (352), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,596 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,597 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 128.0) internal successors, (512), 4 states have internal predecessors, (512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,597 INFO L186 Difference]: Start difference. First operand has 116 places, 113 transitions, 248 flow. Second operand 3 states and 352 transitions. [2021-11-07 08:06:25,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 117 transitions, 284 flow [2021-11-07 08:06:25,601 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 117 transitions, 282 flow, removed 0 selfloop flow, removed 1 redundant places. [2021-11-07 08:06:25,605 INFO L242 Difference]: Finished difference. Result has 119 places, 115 transitions, 270 flow [2021-11-07 08:06:25,606 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=246, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=270, PETRI_PLACES=119, PETRI_TRANSITIONS=115} [2021-11-07 08:06:25,606 INFO L334 CegarLoopForPetriNet]: 114 programPoint places, 5 predicate places. [2021-11-07 08:06:25,606 INFO L470 AbstractCegarLoop]: Abstraction has has 119 places, 115 transitions, 270 flow [2021-11-07 08:06:25,607 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 114.66666666666667) internal successors, (344), 3 states have internal predecessors, (344), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:25,607 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:25,607 INFO L254 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:25,607 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-07 08:06:25,608 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:25,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:25,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1214396204, now seen corresponding path program 2 times [2021-11-07 08:06:25,609 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:25,610 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592208401] [2021-11-07 08:06:25,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:25,611 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:25,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:25,755 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:06:25,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:25,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592208401] [2021-11-07 08:06:25,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592208401] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:25,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [12801901] [2021-11-07 08:06:25,756 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-07 08:06:25,757 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:25,757 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:25,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:25,786 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-07 08:06:25,912 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-07 08:06:25,913 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:06:25,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:06:25,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:26,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-07 08:06:26,323 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [12801901] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:26,323 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:26,331 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2021-11-07 08:06:26,331 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [66954520] [2021-11-07 08:06:26,333 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-07 08:06:26,333 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:26,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-07 08:06:26,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-07 08:06:26,336 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 114 out of 128 [2021-11-07 08:06:26,338 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 119 places, 115 transitions, 270 flow. Second operand has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:26,338 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:06:26,338 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 114 of 128 [2021-11-07 08:06:26,338 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:06:26,476 INFO L129 PetriNetUnfolder]: 47/387 cut-off events. [2021-11-07 08:06:26,476 INFO L130 PetriNetUnfolder]: For 15/15 co-relation queries the response was YES. [2021-11-07 08:06:26,479 INFO L84 FinitePrefix]: Finished finitePrefix Result has 548 conditions, 387 events. 47/387 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 1652 event pairs, 10 based on Foata normal form. 2/389 useless extension candidates. Maximal degree in co-relation 541. Up to 41 conditions per place. [2021-11-07 08:06:26,481 INFO L132 encePairwiseOnDemand]: 123/128 looper letters, 10 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2021-11-07 08:06:26,482 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 121 transitions, 314 flow [2021-11-07 08:06:26,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-07 08:06:26,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2021-11-07 08:06:26,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 700 transitions. [2021-11-07 08:06:26,485 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.9114583333333334 [2021-11-07 08:06:26,485 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 700 transitions. [2021-11-07 08:06:26,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 700 transitions. [2021-11-07 08:06:26,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:06:26,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 700 transitions. [2021-11-07 08:06:26,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 116.66666666666667) internal successors, (700), 6 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:26,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:26,492 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 128.0) internal successors, (896), 7 states have internal predecessors, (896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:26,492 INFO L186 Difference]: Start difference. First operand has 119 places, 115 transitions, 270 flow. Second operand 6 states and 700 transitions. [2021-11-07 08:06:26,493 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 121 transitions, 314 flow [2021-11-07 08:06:26,496 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 121 transitions, 308 flow, removed 0 selfloop flow, removed 2 redundant places. [2021-11-07 08:06:26,499 INFO L242 Difference]: Finished difference. Result has 125 places, 118 transitions, 296 flow [2021-11-07 08:06:26,500 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=264, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=110, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=296, PETRI_PLACES=125, PETRI_TRANSITIONS=118} [2021-11-07 08:06:26,500 INFO L334 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2021-11-07 08:06:26,500 INFO L470 AbstractCegarLoop]: Abstraction has has 125 places, 118 transitions, 296 flow [2021-11-07 08:06:26,501 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 115.71428571428571) internal successors, (810), 7 states have internal predecessors, (810), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:26,501 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:26,501 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:26,539 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:26,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:26,728 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:26,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:26,728 INFO L85 PathProgramCache]: Analyzing trace with hash -1279842642, now seen corresponding path program 3 times [2021-11-07 08:06:26,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:26,729 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383022489] [2021-11-07 08:06:26,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:26,729 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:26,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:26,941 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:26,941 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:26,941 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383022489] [2021-11-07 08:06:26,942 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383022489] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:26,942 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980884343] [2021-11-07 08:06:26,942 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-07 08:06:26,942 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:26,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:26,958 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:27,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-07 08:06:27,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-11-07 08:06:27,211 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:06:27,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 259 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-07 08:06:27,217 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:27,726 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 7 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-11-07 08:06:27,726 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980884343] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:27,726 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:27,727 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-11-07 08:06:27,727 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044063662] [2021-11-07 08:06:27,728 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-07 08:06:27,728 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:27,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-07 08:06:27,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-07 08:06:27,740 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 128 [2021-11-07 08:06:27,743 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 118 transitions, 296 flow. Second operand has 8 states, 8 states have (on average 105.25) internal successors, (842), 8 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:27,743 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:06:27,743 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 128 [2021-11-07 08:06:27,743 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:06:28,299 INFO L129 PetriNetUnfolder]: 451/1339 cut-off events. [2021-11-07 08:06:28,299 INFO L130 PetriNetUnfolder]: For 251/282 co-relation queries the response was YES. [2021-11-07 08:06:28,305 INFO L84 FinitePrefix]: Finished finitePrefix Result has 2645 conditions, 1339 events. 451/1339 cut-off events. For 251/282 co-relation queries the response was YES. Maximal size of possible extension queue 51. Compared 7849 event pairs, 2 based on Foata normal form. 73/1357 useless extension candidates. Maximal degree in co-relation 2635. Up to 259 conditions per place. [2021-11-07 08:06:28,315 INFO L132 encePairwiseOnDemand]: 115/128 looper letters, 106 selfloop transitions, 50 changer transitions 2/251 dead transitions. [2021-11-07 08:06:28,316 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 149 places, 251 transitions, 973 flow [2021-11-07 08:06:28,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-11-07 08:06:28,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2021-11-07 08:06:28,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 2672 transitions. [2021-11-07 08:06:28,325 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.835 [2021-11-07 08:06:28,325 INFO L72 ComplementDD]: Start complementDD. Operand 25 states and 2672 transitions. [2021-11-07 08:06:28,326 INFO L73 IsDeterministic]: Start isDeterministic. Operand 25 states and 2672 transitions. [2021-11-07 08:06:28,328 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:06:28,328 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 25 states and 2672 transitions. [2021-11-07 08:06:28,336 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 26 states, 25 states have (on average 106.88) internal successors, (2672), 25 states have internal predecessors, (2672), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:28,345 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 26 states, 26 states have (on average 128.0) internal successors, (3328), 26 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:28,347 INFO L81 ComplementDD]: Finished complementDD. Result has 26 states, 26 states have (on average 128.0) internal successors, (3328), 26 states have internal predecessors, (3328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:28,347 INFO L186 Difference]: Start difference. First operand has 125 places, 118 transitions, 296 flow. Second operand 25 states and 2672 transitions. [2021-11-07 08:06:28,347 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 149 places, 251 transitions, 973 flow [2021-11-07 08:06:28,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 147 places, 251 transitions, 967 flow, removed 1 selfloop flow, removed 2 redundant places. [2021-11-07 08:06:28,356 INFO L242 Difference]: Finished difference. Result has 163 places, 172 transitions, 680 flow [2021-11-07 08:06:28,356 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=123, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=106, PETRI_DIFFERENCE_SUBTRAHEND_STATES=25, PETRI_FLOW=680, PETRI_PLACES=163, PETRI_TRANSITIONS=172} [2021-11-07 08:06:28,357 INFO L334 CegarLoopForPetriNet]: 114 programPoint places, 49 predicate places. [2021-11-07 08:06:28,357 INFO L470 AbstractCegarLoop]: Abstraction has has 163 places, 172 transitions, 680 flow [2021-11-07 08:06:28,357 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 105.25) internal successors, (842), 8 states have internal predecessors, (842), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:28,358 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:28,358 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:28,394 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-07 08:06:28,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:28,574 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:28,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:28,575 INFO L85 PathProgramCache]: Analyzing trace with hash 2031675991, now seen corresponding path program 4 times [2021-11-07 08:06:28,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:28,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541478140] [2021-11-07 08:06:28,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:28,575 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:28,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:28,756 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-07 08:06:28,756 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:28,756 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541478140] [2021-11-07 08:06:28,756 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541478140] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-07 08:06:28,757 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-07 08:06:28,757 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-07 08:06:28,757 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1435295680] [2021-11-07 08:06:28,757 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-07 08:06:28,758 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:28,758 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-07 08:06:28,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-07 08:06:28,760 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 128 [2021-11-07 08:06:28,760 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 172 transitions, 680 flow. Second operand has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:28,760 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:06:28,761 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 128 [2021-11-07 08:06:28,761 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:06:28,979 INFO L129 PetriNetUnfolder]: 123/774 cut-off events. [2021-11-07 08:06:28,980 INFO L130 PetriNetUnfolder]: For 1135/1182 co-relation queries the response was YES. [2021-11-07 08:06:28,985 INFO L84 FinitePrefix]: Finished finitePrefix Result has 1805 conditions, 774 events. 123/774 cut-off events. For 1135/1182 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 4102 event pairs, 10 based on Foata normal form. 80/833 useless extension candidates. Maximal degree in co-relation 1780. Up to 83 conditions per place. [2021-11-07 08:06:28,990 INFO L132 encePairwiseOnDemand]: 118/128 looper letters, 11 selfloop transitions, 14 changer transitions 1/155 dead transitions. [2021-11-07 08:06:28,990 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 155 transitions, 620 flow [2021-11-07 08:06:28,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-07 08:06:28,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2021-11-07 08:06:28,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 530 transitions. [2021-11-07 08:06:28,993 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.828125 [2021-11-07 08:06:28,993 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 530 transitions. [2021-11-07 08:06:28,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 530 transitions. [2021-11-07 08:06:28,994 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:06:28,994 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 530 transitions. [2021-11-07 08:06:28,996 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 106.0) internal successors, (530), 5 states have internal predecessors, (530), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:28,997 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:28,998 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 128.0) internal successors, (768), 6 states have internal predecessors, (768), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:28,998 INFO L186 Difference]: Start difference. First operand has 163 places, 172 transitions, 680 flow. Second operand 5 states and 530 transitions. [2021-11-07 08:06:28,998 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 155 transitions, 620 flow [2021-11-07 08:06:29,010 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 155 transitions, 602 flow, removed 6 selfloop flow, removed 4 redundant places. [2021-11-07 08:06:29,013 INFO L242 Difference]: Finished difference. Result has 158 places, 154 transitions, 576 flow [2021-11-07 08:06:29,013 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=540, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=576, PETRI_PLACES=158, PETRI_TRANSITIONS=154} [2021-11-07 08:06:29,014 INFO L334 CegarLoopForPetriNet]: 114 programPoint places, 44 predicate places. [2021-11-07 08:06:29,014 INFO L470 AbstractCegarLoop]: Abstraction has has 158 places, 154 transitions, 576 flow [2021-11-07 08:06:29,015 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 104.75) internal successors, (419), 4 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:29,015 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:29,015 INFO L254 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:29,015 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-07 08:06:29,015 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:29,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:29,016 INFO L85 PathProgramCache]: Analyzing trace with hash 169489583, now seen corresponding path program 5 times [2021-11-07 08:06:29,016 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:29,016 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771250700] [2021-11-07 08:06:29,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:29,017 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:29,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:29,148 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-07 08:06:29,148 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:29,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771250700] [2021-11-07 08:06:29,148 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771250700] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:29,148 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1643998348] [2021-11-07 08:06:29,149 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-11-07 08:06:29,149 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:29,149 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:29,150 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:29,176 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-07 08:06:29,324 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2021-11-07 08:06:29,324 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:06:29,325 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 6 conjunts are in the unsatisfiable core [2021-11-07 08:06:29,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:29,669 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 13 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-07 08:06:29,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1643998348] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:29,670 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:29,670 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-11-07 08:06:29,670 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184175190] [2021-11-07 08:06:29,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-11-07 08:06:29,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:29,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-11-07 08:06:29,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-11-07 08:06:29,682 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 104 out of 128 [2021-11-07 08:06:29,684 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 154 transitions, 576 flow. Second operand has 12 states, 12 states have (on average 108.25) internal successors, (1299), 12 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:29,684 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:06:29,684 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 104 of 128 [2021-11-07 08:06:29,684 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:06:30,839 INFO L129 PetriNetUnfolder]: 394/1632 cut-off events. [2021-11-07 08:06:30,839 INFO L130 PetriNetUnfolder]: For 2017/2052 co-relation queries the response was YES. [2021-11-07 08:06:30,850 INFO L84 FinitePrefix]: Finished finitePrefix Result has 4171 conditions, 1632 events. 394/1632 cut-off events. For 2017/2052 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 9654 event pairs, 14 based on Foata normal form. 72/1688 useless extension candidates. Maximal degree in co-relation 4148. Up to 147 conditions per place. [2021-11-07 08:06:30,861 INFO L132 encePairwiseOnDemand]: 116/128 looper letters, 128 selfloop transitions, 146 changer transitions 0/395 dead transitions. [2021-11-07 08:06:30,861 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 395 transitions, 2180 flow [2021-11-07 08:06:30,861 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-11-07 08:06:30,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2021-11-07 08:06:30,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 7039 transitions. [2021-11-07 08:06:30,886 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8460336538461538 [2021-11-07 08:06:30,886 INFO L72 ComplementDD]: Start complementDD. Operand 65 states and 7039 transitions. [2021-11-07 08:06:30,887 INFO L73 IsDeterministic]: Start isDeterministic. Operand 65 states and 7039 transitions. [2021-11-07 08:06:30,893 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:06:30,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 65 states and 7039 transitions. [2021-11-07 08:06:30,918 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 66 states, 65 states have (on average 108.29230769230769) internal successors, (7039), 65 states have internal predecessors, (7039), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:30,941 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 66 states, 66 states have (on average 128.0) internal successors, (8448), 66 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:30,947 INFO L81 ComplementDD]: Finished complementDD. Result has 66 states, 66 states have (on average 128.0) internal successors, (8448), 66 states have internal predecessors, (8448), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:30,947 INFO L186 Difference]: Start difference. First operand has 158 places, 154 transitions, 576 flow. Second operand 65 states and 7039 transitions. [2021-11-07 08:06:30,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 395 transitions, 2180 flow [2021-11-07 08:06:30,960 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 222 places, 395 transitions, 2180 flow, removed 0 selfloop flow, removed 0 redundant places. [2021-11-07 08:06:30,969 INFO L242 Difference]: Finished difference. Result has 270 places, 281 transitions, 1895 flow [2021-11-07 08:06:30,969 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=576, PETRI_DIFFERENCE_MINUEND_PLACES=158, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=65, PETRI_FLOW=1895, PETRI_PLACES=270, PETRI_TRANSITIONS=281} [2021-11-07 08:06:30,969 INFO L334 CegarLoopForPetriNet]: 114 programPoint places, 156 predicate places. [2021-11-07 08:06:30,970 INFO L470 AbstractCegarLoop]: Abstraction has has 270 places, 281 transitions, 1895 flow [2021-11-07 08:06:30,970 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 108.25) internal successors, (1299), 12 states have internal predecessors, (1299), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:30,971 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:30,971 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:31,009 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:31,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-11-07 08:06:31,198 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:31,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:31,199 INFO L85 PathProgramCache]: Analyzing trace with hash 694660498, now seen corresponding path program 6 times [2021-11-07 08:06:31,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:31,199 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1677777020] [2021-11-07 08:06:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:31,199 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-07 08:06:31,467 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 08:06:31,467 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-07 08:06:31,467 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1677777020] [2021-11-07 08:06:31,467 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1677777020] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:31,468 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1820687173] [2021-11-07 08:06:31,469 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-11-07 08:06:31,469 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:31,470 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 [2021-11-07 08:06:31,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-07 08:06:31,493 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-07 08:06:31,746 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2021-11-07 08:06:31,746 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-07 08:06:31,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 339 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-07 08:06:31,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-07 08:06:32,116 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 43 proven. 4 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-11-07 08:06:32,116 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1820687173] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-07 08:06:32,118 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-11-07 08:06:32,119 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 6 [2021-11-07 08:06:32,119 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [384106667] [2021-11-07 08:06:32,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-07 08:06:32,120 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-07 08:06:32,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-07 08:06:32,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-07 08:06:32,122 INFO L499 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 128 [2021-11-07 08:06:32,123 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 281 transitions, 1895 flow. Second operand has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:32,123 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2021-11-07 08:06:32,123 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 128 [2021-11-07 08:06:32,124 INFO L74 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2021-11-07 08:06:32,426 INFO L129 PetriNetUnfolder]: 162/887 cut-off events. [2021-11-07 08:06:32,426 INFO L130 PetriNetUnfolder]: For 6548/6590 co-relation queries the response was YES. [2021-11-07 08:06:32,438 INFO L84 FinitePrefix]: Finished finitePrefix Result has 3371 conditions, 887 events. 162/887 cut-off events. For 6548/6590 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3842 event pairs, 38 based on Foata normal form. 51/913 useless extension candidates. Maximal degree in co-relation 3300. Up to 85 conditions per place. [2021-11-07 08:06:32,445 INFO L132 encePairwiseOnDemand]: 117/128 looper letters, 17 selfloop transitions, 24 changer transitions 0/238 dead transitions. [2021-11-07 08:06:32,445 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 264 places, 238 transitions, 1568 flow [2021-11-07 08:06:32,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-07 08:06:32,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2021-11-07 08:06:32,447 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 885 transitions. [2021-11-07 08:06:32,448 INFO L544 CegarLoopForPetriNet]: DFA transition density 0.8642578125 [2021-11-07 08:06:32,448 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 885 transitions. [2021-11-07 08:06:32,448 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 885 transitions. [2021-11-07 08:06:32,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-07 08:06:32,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 885 transitions. [2021-11-07 08:06:32,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 110.625) internal successors, (885), 8 states have internal predecessors, (885), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:32,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:32,453 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 128.0) internal successors, (1152), 9 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:32,454 INFO L186 Difference]: Start difference. First operand has 270 places, 281 transitions, 1895 flow. Second operand 8 states and 885 transitions. [2021-11-07 08:06:32,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 264 places, 238 transitions, 1568 flow [2021-11-07 08:06:32,500 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 244 places, 238 transitions, 1389 flow, removed 59 selfloop flow, removed 20 redundant places. [2021-11-07 08:06:32,505 INFO L242 Difference]: Finished difference. Result has 246 places, 235 transitions, 1379 flow [2021-11-07 08:06:32,505 INFO L317 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=1298, PETRI_DIFFERENCE_MINUEND_PLACES=237, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=211, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1379, PETRI_PLACES=246, PETRI_TRANSITIONS=235} [2021-11-07 08:06:32,506 INFO L334 CegarLoopForPetriNet]: 114 programPoint places, 132 predicate places. [2021-11-07 08:06:32,506 INFO L470 AbstractCegarLoop]: Abstraction has has 246 places, 235 transitions, 1379 flow [2021-11-07 08:06:32,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 111.5) internal successors, (669), 6 states have internal predecessors, (669), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-07 08:06:32,507 INFO L246 CegarLoopForPetriNet]: Found error trace [2021-11-07 08:06:32,507 INFO L254 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-07 08:06:32,541 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-07 08:06:32,726 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-07 08:06:32,726 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION] === [2021-11-07 08:06:32,726 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-07 08:06:32,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1551110420, now seen corresponding path program 7 times [2021-11-07 08:06:32,727 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-07 08:06:32,727 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1370033298] [2021-11-07 08:06:32,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-07 08:06:32,727 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-07 08:06:32,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:06:32,795 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-07 08:06:32,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-07 08:06:32,926 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-07 08:06:32,926 INFO L627 BasicCegarLoop]: Counterexample is feasible [2021-11-07 08:06:32,927 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION [2021-11-07 08:06:32,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATION [2021-11-07 08:06:32,931 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATION [2021-11-07 08:06:32,932 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-07 08:06:32,935 INFO L731 BasicCegarLoop]: Path program histogram: [7, 1, 1, 1] [2021-11-07 08:06:32,941 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2021-11-07 08:06:32,941 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-07 08:06:33,112 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.11 08:06:33 BasicIcfg [2021-11-07 08:06:33,119 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-07 08:06:33,127 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-07 08:06:33,127 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-07 08:06:33,127 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-07 08:06:33,128 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.11 08:06:24" (3/4) ... [2021-11-07 08:06:33,130 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-11-07 08:06:33,235 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/witness.graphml [2021-11-07 08:06:33,235 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-07 08:06:33,237 INFO L168 Benchmark]: Toolchain (without parser) took 10551.99 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 88.6 MB in the beginning and 121.7 MB in the end (delta: -33.0 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:33,237 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 97.9 MB in the beginning and 97.9 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-07 08:06:33,237 INFO L168 Benchmark]: CACSL2BoogieTranslator took 745.69 ms. Allocated memory is still 125.8 MB. Free memory was 88.6 MB in the beginning and 84.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:33,238 INFO L168 Benchmark]: Boogie Procedure Inliner took 68.71 ms. Allocated memory is still 125.8 MB. Free memory was 84.4 MB in the beginning and 82.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:33,238 INFO L168 Benchmark]: Boogie Preprocessor took 71.27 ms. Allocated memory is still 125.8 MB. Free memory was 82.4 MB in the beginning and 80.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:33,239 INFO L168 Benchmark]: RCFGBuilder took 429.95 ms. Allocated memory is still 125.8 MB. Free memory was 80.3 MB in the beginning and 65.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:33,239 INFO L168 Benchmark]: TraceAbstraction took 9083.20 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 65.6 MB in the beginning and 48.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:33,240 INFO L168 Benchmark]: Witness Printer took 108.42 ms. Allocated memory is still 182.5 MB. Free memory was 148.9 MB in the beginning and 121.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. [2021-11-07 08:06:33,242 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory was 97.9 MB in the beginning and 97.9 MB in the end (delta: 27.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 745.69 ms. Allocated memory is still 125.8 MB. Free memory was 88.6 MB in the beginning and 84.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 68.71 ms. Allocated memory is still 125.8 MB. Free memory was 84.4 MB in the beginning and 82.4 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 71.27 ms. Allocated memory is still 125.8 MB. Free memory was 82.4 MB in the beginning and 80.3 MB in the end (delta: 2.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 429.95 ms. Allocated memory is still 125.8 MB. Free memory was 80.3 MB in the beginning and 65.6 MB in the end (delta: 14.7 MB). Peak memory consumption was 14.7 MB. Max. memory is 16.1 GB. * TraceAbstraction took 9083.20 ms. Allocated memory was 125.8 MB in the beginning and 182.5 MB in the end (delta: 56.6 MB). Free memory was 65.6 MB in the beginning and 48.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 74.6 MB. Max. memory is 16.1 GB. * Witness Printer took 108.42 ms. Allocated memory is still 182.5 MB. Free memory was 148.9 MB in the beginning and 121.7 MB in the end (delta: 27.3 MB). Peak memory consumption was 27.3 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 919]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L870] 0 int num; VAL [num=0] [L871] 0 unsigned long total; VAL [num=0, total=0] [L872] 0 int flag; VAL [flag=0, num=0, total=0] [L873] 0 pthread_mutex_t m; VAL [flag=0, m={7:0}, num=0, total=0] [L874] 0 pthread_cond_t empty, full; VAL [empty={9:0}, flag=0, full={10:0}, m={7:0}, num=0, total=0] [L907] 0 pthread_t t1, t2; VAL [empty={9:0}, flag=0, full={10:0}, m={7:0}, num=0, total=0] [L908] 0 num = 0 VAL [empty={9:0}, flag=0, full={10:0}, m={7:0}, num=0, total=0] [L909] 0 total = 0 VAL [empty={9:0}, flag=0, full={10:0}, m={7:0}, num=0, total=0] [L913] FCALL, FORK 0 pthread_create(&t1, 0, thread1, 0) VAL [arg={0:0}, empty={9:0}, flag=0, full={10:0}, m={7:0}, num=0, total=0] [L876] 1 int i; VAL [arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, m={7:0}, num=0, total=0] [L877] 1 i = 0 VAL [arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=0, m={7:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=0, m={7:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=0, m={7:0}, num=0, total=0] [L914] FCALL, FORK 0 pthread_create(&t2, 0, thread2, 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=0, m={7:0}, num=0, total=0] [L915] 0 \read(t1) VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=0, m={7:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=0, m={7:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, m={7:0}, num=1, total=0] [L890] 2 int j; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, m={7:0}, num=1, total=0] [L891] 2 j = 0 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=0, m={7:0}, num=1, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=0, m={7:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=0, m={7:0}, num=1, total=0] [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=0, m={7:0}, num=1, total=0] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=0, m={7:0}, num=0, total=0] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=1, m={7:0}, num=0, total=0] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=1, m={7:0}, num=0, total=0] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=1, m={7:0}, num=0, total=0] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=1, m={7:0}, num=0, total=0] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=1, j=1, m={7:0}, num=1, total=0] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=1, m={7:0}, num=1, total=0] [L894] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=1, m={7:0}, num=1, total=0] [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=1, m={7:0}, num=1, total=1] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=1, m={7:0}, num=0, total=1] [L878] COND TRUE 1 i < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=1, m={7:0}, num=0, total=1] [L880] COND FALSE 1 !(num > 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=1, m={7:0}, num=0, total=1] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=1, j++=1, m={7:0}, num=0, total=1] [L882] 1 num++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=1, j++=1, m={7:0}, num=1, total=1] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=2, m={7:0}, num=1, total=1] [L892] COND TRUE 2 j < 3 VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=2, m={7:0}, num=1, total=1] [L894] COND FALSE 2 !(num == 0) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=2, m={7:0}, num=1, total=1] [L896] 2 total = total + j VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=2, m={7:0}, num=1, total=3] [L897] 2 num-- VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=2, m={7:0}, num=0, total=3] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=2, j=2, j++=2, m={7:0}, num=0, total=3] [L885] 1 i++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=3, i++=2, j=2, j++=2, m={7:0}, num=0, total=3] [L900] 2 j++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=3, i++=2, j=3, m={7:0}, num=0, total=3] [L878] COND FALSE 1 !(i < 3) VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=3, j=3, m={7:0}, num=0, total=3] [L887] 1 return ((void *)0); VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=3, j=3, m={7:0}, num=0, total=3] [L915] FCALL, JOIN 1 pthread_join(t1, 0) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=3, j=3, m={7:0}, num=0, total=3] [L916] 0 \read(t2) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=3, j=3, m={7:0}, num=0, total=3] [L892] COND FALSE 2 !(j < 3) VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=3, j=3, m={7:0}, num=0, total=3] [L902] 2 total = total + j VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=0, full={10:0}, i=3, j=3, m={7:0}, num=0, total=6] [L903] 2 flag = 1 VAL [\result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=1, full={10:0}, i=3, j=3, m={7:0}, num=0, total=6] [L904] 2 return ((void *)0); VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=1, full={10:0}, i=3, j=3, m={7:0}, num=0, total=6] [L916] FCALL, JOIN 2 pthread_join(t2, 0) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=1, full={10:0}, i=3, j=3, m={7:0}, num=0, total=6] [L917] COND TRUE 0 \read(flag) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=1, full={10:0}, i=3, j=3, m={7:0}, num=0, total=6] [L918] COND FALSE 0 !(total != ((3 * (3 + 1)) / 2)) VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=1, full={10:0}, i=3, j=3, m={7:0}, num=0, total=6] [L919] 0 reach_error() VAL [\result={0:0}, \result={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, empty={9:0}, flag=1, full={10:0}, i=3, j=3, m={7:0}, num=0, total=6] - UnprovableResult [Line: 914]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 913]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 164 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 8.7s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 100 SDtfs, 517 SDslu, 229 SDs, 0 SdLazy, 457 SolverSat, 118 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 631 GetRequests, 516 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1942 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1895occurred in iteration=8, InterpolantAutomatonStates: 120, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 2.6s InterpolantComputationTime, 1614 NumberOfCodeBlocks, 1535 NumberOfCodeBlocksAsserted, 24 NumberOfCheckSat, 1452 ConstructedInterpolants, 0 QuantifiedInterpolants, 2224 SizeOfPredicates, 12 NumberOfNonLiveVariables, 970 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 13 InterpolantComputations, 5 PerfectInterpolantSequences, 212/266 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-11-07 08:06:33,288 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_17f31635-4bc0-4bdd-8366-e2649bee1398/bin/uautomizer-AkOaLMaTGY/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE