./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc --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 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-02 20:39:44,189 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:39:44,194 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:39:44,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:39:44,230 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:39:44,234 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:39:44,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:39:44,240 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:39:44,242 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:39:44,247 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:39:44,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:39:44,251 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:39:44,251 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:39:44,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:39:44,256 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:39:44,258 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:39:44,260 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:39:44,261 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:39:44,263 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:39:44,270 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:39:44,272 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:39:44,273 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:39:44,277 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:39:44,278 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:39:44,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:39:44,287 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:39:44,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:39:44,289 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:39:44,290 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:39:44,292 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:39:44,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:39:44,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:39:44,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:39:44,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:39:44,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:39:44,299 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:39:44,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:39:44,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:39:44,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:39:44,300 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:39:44,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:39:44,302 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:39:44,337 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:39:44,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:39:44,342 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:39:44,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:39:44,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:39:44,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:39:44,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:39:44,345 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:39:44,345 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:39:44,345 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:39:44,346 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:39:44,347 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:39:44,347 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:39:44,347 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:39:44,347 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:39:44,347 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:39:44,348 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:39:44,348 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:39:44,348 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:39:44,348 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:39:44,348 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:39:44,349 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:39:44,349 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:39:44,349 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:39:44,349 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:44,350 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:39:44,350 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:39:44,350 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:39:44,350 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:39:44,351 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:39:44,351 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:39:44,351 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:39:44,351 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:39:44,352 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_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0e7e1d85f63f5db62c0766d87dec12398108cf8053838b2df867ce8148d55e54 [2022-11-02 20:39:44,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:39:44,667 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:39:44,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:39:44,673 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:39:44,674 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:39:44,675 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-02 20:39:44,749 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/data/1b36ce4b1/0868fd9448ae4dafbb94bcfbd1cfffbc/FLAGfe7f1a6fa [2022-11-02 20:39:45,361 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:39:45,362 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c [2022-11-02 20:39:45,371 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/data/1b36ce4b1/0868fd9448ae4dafbb94bcfbd1cfffbc/FLAGfe7f1a6fa [2022-11-02 20:39:45,710 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/data/1b36ce4b1/0868fd9448ae4dafbb94bcfbd1cfffbc [2022-11-02 20:39:45,712 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:39:45,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:39:45,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:45,716 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:39:45,719 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:39:45,720 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:45" (1/1) ... [2022-11-02 20:39:45,721 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52d7ad58 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:45, skipping insertion in model container [2022-11-02 20:39:45,722 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:45" (1/1) ... [2022-11-02 20:39:45,729 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:39:45,757 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:39:45,970 WARN L230 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_172cea27-650e-41e0-8952-b264996d4901/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-02 20:39:45,978 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:45,986 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:39:46,011 WARN L230 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_172cea27-650e-41e0-8952-b264996d4901/sv-benchmarks/c/weaver/parallel-min-max-1.wvr.c[3057,3070] [2022-11-02 20:39:46,015 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:46,029 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:39:46,030 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46 WrapperNode [2022-11-02 20:39:46,030 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:46,031 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:46,032 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:39:46,032 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:39:46,039 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,071 INFO L138 Inliner]: procedures = 25, calls = 53, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 122 [2022-11-02 20:39:46,071 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:46,072 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:39:46,072 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:39:46,072 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:39:46,081 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,082 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,085 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,093 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,100 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,102 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,104 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:39:46,105 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:39:46,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:39:46,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:39:46,107 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (1/1) ... [2022-11-02 20:39:46,113 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:46,126 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:46,144 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:39:46,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:39:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:39:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:39:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:39:46,188 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:39:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:39:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:39:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:39:46,189 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:39:46,189 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:39:46,190 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:39:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:39:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-02 20:39:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-02 20:39:46,190 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:39:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:39:46,191 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:39:46,191 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:39:46,193 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-02 20:39:46,299 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:39:46,301 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:46,729 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:46,797 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:46,798 INFO L300 CfgBuilder]: Removed 3 assume(true) statements. [2022-11-02 20:39:46,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:46 BoogieIcfgContainer [2022-11-02 20:39:46,800 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:46,802 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:46,802 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:46,806 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:46,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:39:45" (1/3) ... [2022-11-02 20:39:46,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf4bd3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:46, skipping insertion in model container [2022-11-02 20:39:46,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:46" (2/3) ... [2022-11-02 20:39:46,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf4bd3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:46, skipping insertion in model container [2022-11-02 20:39:46,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:46" (3/3) ... [2022-11-02 20:39:46,809 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-min-max-1.wvr.c [2022-11-02 20:39:46,818 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:39:46,828 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:46,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:39:46,829 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:39:46,918 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:39:46,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 174 places, 176 transitions, 376 flow [2022-11-02 20:39:47,074 INFO L130 PetriNetUnfolder]: 12/173 cut-off events. [2022-11-02 20:39:47,075 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:39:47,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 186 conditions, 173 events. 12/173 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 99 event pairs, 0 based on Foata normal form. 0/160 useless extension candidates. Maximal degree in co-relation 142. Up to 2 conditions per place. [2022-11-02 20:39:47,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 174 places, 176 transitions, 376 flow [2022-11-02 20:39:47,092 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 162 transitions, 342 flow [2022-11-02 20:39:47,107 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:47,117 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@6bcf8967, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:47,117 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:39:47,183 INFO L130 PetriNetUnfolder]: 12/161 cut-off events. [2022-11-02 20:39:47,184 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:39:47,184 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:47,185 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:47,185 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:39:47,190 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:47,191 INFO L85 PathProgramCache]: Analyzing trace with hash -1064113817, now seen corresponding path program 1 times [2022-11-02 20:39:47,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:47,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80205334] [2022-11-02 20:39:47,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:47,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:47,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:47,550 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:47,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:47,552 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80205334] [2022-11-02 20:39:47,552 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80205334] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:47,553 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:47,553 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:47,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040488273] [2022-11-02 20:39:47,555 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:47,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:39:47,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:47,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:39:47,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:47,619 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 157 out of 176 [2022-11-02 20:39:47,626 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 162 transitions, 342 flow. Second operand has 2 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 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) [2022-11-02 20:39:47,626 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:47,626 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 157 of 176 [2022-11-02 20:39:47,627 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:47,779 INFO L130 PetriNetUnfolder]: 32/262 cut-off events. [2022-11-02 20:39:47,779 INFO L131 PetriNetUnfolder]: For 28/28 co-relation queries the response was YES. [2022-11-02 20:39:47,782 INFO L83 FinitePrefix]: Finished finitePrefix Result has 344 conditions, 262 events. 32/262 cut-off events. For 28/28 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 663 event pairs, 20 based on Foata normal form. 18/254 useless extension candidates. Maximal degree in co-relation 197. Up to 47 conditions per place. [2022-11-02 20:39:47,786 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 10 selfloop transitions, 0 changer transitions 5/154 dead transitions. [2022-11-02 20:39:47,786 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 154 transitions, 346 flow [2022-11-02 20:39:47,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:39:47,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:39:47,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 332 transitions. [2022-11-02 20:39:47,808 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9431818181818182 [2022-11-02 20:39:47,809 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 332 transitions. [2022-11-02 20:39:47,809 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 332 transitions. [2022-11-02 20:39:47,813 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:47,815 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 332 transitions. [2022-11-02 20:39:47,821 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 166.0) internal successors, (332), 2 states have internal predecessors, (332), 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) [2022-11-02 20:39:47,829 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2022-11-02 20:39:47,829 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 176.0) internal successors, (528), 3 states have internal predecessors, (528), 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) [2022-11-02 20:39:47,831 INFO L175 Difference]: Start difference. First operand has 160 places, 162 transitions, 342 flow. Second operand 2 states and 332 transitions. [2022-11-02 20:39:47,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 154 transitions, 346 flow [2022-11-02 20:39:47,836 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 155 places, 154 transitions, 334 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:39:47,843 INFO L231 Difference]: Finished difference. Result has 155 places, 149 transitions, 304 flow [2022-11-02 20:39:47,845 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=154, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=304, PETRI_PLACES=155, PETRI_TRANSITIONS=149} [2022-11-02 20:39:47,849 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -5 predicate places. [2022-11-02 20:39:47,850 INFO L495 AbstractCegarLoop]: Abstraction has has 155 places, 149 transitions, 304 flow [2022-11-02 20:39:47,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 162.0) internal successors, (324), 2 states have internal predecessors, (324), 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) [2022-11-02 20:39:47,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:47,851 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:47,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:39:47,852 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:39:47,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:47,853 INFO L85 PathProgramCache]: Analyzing trace with hash -661841237, now seen corresponding path program 1 times [2022-11-02 20:39:47,853 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:47,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447183835] [2022-11-02 20:39:47,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:47,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:48,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:48,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:48,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:48,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447183835] [2022-11-02 20:39:48,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447183835] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:48,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:48,657 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-02 20:39:48,657 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567546026] [2022-11-02 20:39:48,658 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:48,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:39:48,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:48,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:39:48,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:39:48,663 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 176 [2022-11-02 20:39:48,665 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 155 places, 149 transitions, 304 flow. Second operand has 8 states, 8 states have (on average 120.75) internal successors, (966), 8 states have internal predecessors, (966), 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) [2022-11-02 20:39:48,666 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:48,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 176 [2022-11-02 20:39:48,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:48,951 INFO L130 PetriNetUnfolder]: 80/351 cut-off events. [2022-11-02 20:39:48,952 INFO L131 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2022-11-02 20:39:48,954 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 351 events. 80/351 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1271 event pairs, 64 based on Foata normal form. 0/308 useless extension candidates. Maximal degree in co-relation 544. Up to 150 conditions per place. [2022-11-02 20:39:48,956 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 43 selfloop transitions, 7 changer transitions 0/153 dead transitions. [2022-11-02 20:39:48,956 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 153 transitions, 412 flow [2022-11-02 20:39:48,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-02 20:39:48,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-02 20:39:48,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 979 transitions. [2022-11-02 20:39:48,962 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6953125 [2022-11-02 20:39:48,962 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 979 transitions. [2022-11-02 20:39:48,962 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 979 transitions. [2022-11-02 20:39:48,963 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:48,963 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 979 transitions. [2022-11-02 20:39:48,966 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 122.375) internal successors, (979), 8 states have internal predecessors, (979), 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) [2022-11-02 20:39:48,971 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 176.0) internal successors, (1584), 9 states have internal predecessors, (1584), 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) [2022-11-02 20:39:48,972 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 176.0) internal successors, (1584), 9 states have internal predecessors, (1584), 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) [2022-11-02 20:39:48,973 INFO L175 Difference]: Start difference. First operand has 155 places, 149 transitions, 304 flow. Second operand 8 states and 979 transitions. [2022-11-02 20:39:48,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 157 places, 153 transitions, 412 flow [2022-11-02 20:39:48,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 157 places, 153 transitions, 412 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:39:48,980 INFO L231 Difference]: Finished difference. Result has 158 places, 150 transitions, 326 flow [2022-11-02 20:39:48,980 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=304, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=149, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=326, PETRI_PLACES=158, PETRI_TRANSITIONS=150} [2022-11-02 20:39:48,981 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, -2 predicate places. [2022-11-02 20:39:48,981 INFO L495 AbstractCegarLoop]: Abstraction has has 158 places, 150 transitions, 326 flow [2022-11-02 20:39:48,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 120.75) internal successors, (966), 8 states have internal predecessors, (966), 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) [2022-11-02 20:39:48,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:48,983 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:48,983 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:39:48,983 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:39:48,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:48,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1649099828, now seen corresponding path program 1 times [2022-11-02 20:39:48,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:48,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1739900582] [2022-11-02 20:39:48,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:48,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:49,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:49,315 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:49,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:49,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1739900582] [2022-11-02 20:39:49,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1739900582] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:49,317 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563236747] [2022-11-02 20:39:49,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:49,317 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:49,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:49,322 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:49,348 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:39:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:49,468 INFO L263 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:39:49,481 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:49,719 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:49,720 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:49,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:49,987 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563236747] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:49,987 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:39:49,987 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-02 20:39:49,988 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587562341] [2022-11-02 20:39:49,988 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:49,989 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:49,989 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:49,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:49,990 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:39:49,998 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 176 [2022-11-02 20:39:50,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 158 places, 150 transitions, 326 flow. Second operand has 7 states, 7 states have (on average 138.71428571428572) internal successors, (971), 7 states have internal predecessors, (971), 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) [2022-11-02 20:39:50,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:50,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 176 [2022-11-02 20:39:50,000 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:50,225 INFO L130 PetriNetUnfolder]: 134/508 cut-off events. [2022-11-02 20:39:50,225 INFO L131 PetriNetUnfolder]: For 13/13 co-relation queries the response was YES. [2022-11-02 20:39:50,227 INFO L83 FinitePrefix]: Finished finitePrefix Result has 803 conditions, 508 events. 134/508 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2223 event pairs, 85 based on Foata normal form. 0/456 useless extension candidates. Maximal degree in co-relation 798. Up to 111 conditions per place. [2022-11-02 20:39:50,230 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 34 selfloop transitions, 7 changer transitions 0/158 dead transitions. [2022-11-02 20:39:50,230 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 164 places, 158 transitions, 426 flow [2022-11-02 20:39:50,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:50,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:50,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 986 transitions. [2022-11-02 20:39:50,233 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8003246753246753 [2022-11-02 20:39:50,234 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 986 transitions. [2022-11-02 20:39:50,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 986 transitions. [2022-11-02 20:39:50,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:50,235 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 986 transitions. [2022-11-02 20:39:50,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.85714285714286) internal successors, (986), 7 states have internal predecessors, (986), 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) [2022-11-02 20:39:50,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 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) [2022-11-02 20:39:50,241 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 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) [2022-11-02 20:39:50,241 INFO L175 Difference]: Start difference. First operand has 158 places, 150 transitions, 326 flow. Second operand 7 states and 986 transitions. [2022-11-02 20:39:50,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 164 places, 158 transitions, 426 flow [2022-11-02 20:39:50,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 158 places, 158 transitions, 414 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:39:50,271 INFO L231 Difference]: Finished difference. Result has 161 places, 152 transitions, 347 flow [2022-11-02 20:39:50,271 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=314, PETRI_DIFFERENCE_MINUEND_PLACES=152, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=150, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=347, PETRI_PLACES=161, PETRI_TRANSITIONS=152} [2022-11-02 20:39:50,272 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 1 predicate places. [2022-11-02 20:39:50,272 INFO L495 AbstractCegarLoop]: Abstraction has has 161 places, 152 transitions, 347 flow [2022-11-02 20:39:50,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 138.71428571428572) internal successors, (971), 7 states have internal predecessors, (971), 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) [2022-11-02 20:39:50,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:50,273 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:50,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-02 20:39:50,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-11-02 20:39:50,483 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:39:50,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:50,483 INFO L85 PathProgramCache]: Analyzing trace with hash -1512310352, now seen corresponding path program 1 times [2022-11-02 20:39:50,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:50,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [38780723] [2022-11-02 20:39:50,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:50,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:50,712 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:50,713 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:50,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [38780723] [2022-11-02 20:39:50,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [38780723] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:50,713 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [7317500] [2022-11-02 20:39:50,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:50,714 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:50,714 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:50,720 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:50,722 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:39:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:50,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 314 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:39:50,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:51,008 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:51,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:51,247 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:51,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [7317500] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:51,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:39:51,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-02 20:39:51,248 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231084244] [2022-11-02 20:39:51,248 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:51,248 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:39:51,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:51,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:39:51,256 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:39:51,257 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 176 [2022-11-02 20:39:51,259 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 161 places, 152 transitions, 347 flow. Second operand has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2022-11-02 20:39:51,259 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:51,259 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 176 [2022-11-02 20:39:51,259 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:51,439 INFO L130 PetriNetUnfolder]: 136/494 cut-off events. [2022-11-02 20:39:51,440 INFO L131 PetriNetUnfolder]: For 105/141 co-relation queries the response was YES. [2022-11-02 20:39:51,441 INFO L83 FinitePrefix]: Finished finitePrefix Result has 886 conditions, 494 events. 136/494 cut-off events. For 105/141 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2088 event pairs, 57 based on Foata normal form. 36/498 useless extension candidates. Maximal degree in co-relation 878. Up to 119 conditions per place. [2022-11-02 20:39:51,444 INFO L137 encePairwiseOnDemand]: 168/176 looper letters, 36 selfloop transitions, 7 changer transitions 0/160 dead transitions. [2022-11-02 20:39:51,444 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 160 transitions, 459 flow [2022-11-02 20:39:51,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:39:51,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:39:51,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 986 transitions. [2022-11-02 20:39:51,447 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8003246753246753 [2022-11-02 20:39:51,447 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 986 transitions. [2022-11-02 20:39:51,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 986 transitions. [2022-11-02 20:39:51,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:51,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 986 transitions. [2022-11-02 20:39:51,451 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 140.85714285714286) internal successors, (986), 7 states have internal predecessors, (986), 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) [2022-11-02 20:39:51,453 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 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) [2022-11-02 20:39:51,454 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 176.0) internal successors, (1408), 8 states have internal predecessors, (1408), 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) [2022-11-02 20:39:51,454 INFO L175 Difference]: Start difference. First operand has 161 places, 152 transitions, 347 flow. Second operand 7 states and 986 transitions. [2022-11-02 20:39:51,454 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 160 transitions, 459 flow [2022-11-02 20:39:51,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 163 places, 160 transitions, 450 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-02 20:39:51,459 INFO L231 Difference]: Finished difference. Result has 165 places, 153 transitions, 366 flow [2022-11-02 20:39:51,459 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=339, PETRI_DIFFERENCE_MINUEND_PLACES=157, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=152, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=366, PETRI_PLACES=165, PETRI_TRANSITIONS=153} [2022-11-02 20:39:51,460 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 5 predicate places. [2022-11-02 20:39:51,460 INFO L495 AbstractCegarLoop]: Abstraction has has 165 places, 153 transitions, 366 flow [2022-11-02 20:39:51,461 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 139.0) internal successors, (973), 7 states have internal predecessors, (973), 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) [2022-11-02 20:39:51,461 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:51,461 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:51,500 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:39:51,678 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:51,679 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:39:51,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:51,679 INFO L85 PathProgramCache]: Analyzing trace with hash 1438290404, now seen corresponding path program 1 times [2022-11-02 20:39:51,679 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:51,680 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417208217] [2022-11-02 20:39:51,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:51,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:51,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:51,896 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:39:51,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:51,897 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417208217] [2022-11-02 20:39:51,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417208217] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:51,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:51,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:51,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989556612] [2022-11-02 20:39:51,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:51,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:51,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:51,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:51,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:51,900 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 176 [2022-11-02 20:39:51,901 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 165 places, 153 transitions, 366 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 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) [2022-11-02 20:39:51,901 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:51,902 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 176 [2022-11-02 20:39:51,902 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:52,134 INFO L130 PetriNetUnfolder]: 94/428 cut-off events. [2022-11-02 20:39:52,134 INFO L131 PetriNetUnfolder]: For 42/42 co-relation queries the response was YES. [2022-11-02 20:39:52,136 INFO L83 FinitePrefix]: Finished finitePrefix Result has 729 conditions, 428 events. 94/428 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 28. Compared 1540 event pairs, 45 based on Foata normal form. 1/399 useless extension candidates. Maximal degree in co-relation 719. Up to 137 conditions per place. [2022-11-02 20:39:52,138 INFO L137 encePairwiseOnDemand]: 169/176 looper letters, 48 selfloop transitions, 3 changer transitions 4/163 dead transitions. [2022-11-02 20:39:52,138 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 163 transitions, 498 flow [2022-11-02 20:39:52,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:52,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:39:52,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 641 transitions. [2022-11-02 20:39:52,140 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7284090909090909 [2022-11-02 20:39:52,140 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 641 transitions. [2022-11-02 20:39:52,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 641 transitions. [2022-11-02 20:39:52,141 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:52,141 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 641 transitions. [2022-11-02 20:39:52,142 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 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) [2022-11-02 20:39:52,144 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 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) [2022-11-02 20:39:52,144 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 176.0) internal successors, (1056), 6 states have internal predecessors, (1056), 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) [2022-11-02 20:39:52,144 INFO L175 Difference]: Start difference. First operand has 165 places, 153 transitions, 366 flow. Second operand 5 states and 641 transitions. [2022-11-02 20:39:52,145 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 163 transitions, 498 flow [2022-11-02 20:39:52,148 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 164 places, 163 transitions, 488 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-02 20:39:52,151 INFO L231 Difference]: Finished difference. Result has 168 places, 155 transitions, 384 flow [2022-11-02 20:39:52,151 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=356, PETRI_DIFFERENCE_MINUEND_PLACES=160, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=150, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=384, PETRI_PLACES=168, PETRI_TRANSITIONS=155} [2022-11-02 20:39:52,154 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 8 predicate places. [2022-11-02 20:39:52,154 INFO L495 AbstractCegarLoop]: Abstraction has has 168 places, 155 transitions, 384 flow [2022-11-02 20:39:52,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 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) [2022-11-02 20:39:52,155 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:52,155 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:39:52,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-02 20:39:52,155 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:39:52,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:52,156 INFO L85 PathProgramCache]: Analyzing trace with hash -1610452079, now seen corresponding path program 1 times [2022-11-02 20:39:52,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:52,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848022426] [2022-11-02 20:39:52,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:52,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:53,567 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:39:53,568 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:53,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848022426] [2022-11-02 20:39:53,568 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848022426] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:53,568 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46292935] [2022-11-02 20:39:53,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:53,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:53,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:53,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:53,598 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:39:53,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:53,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 50 conjunts are in the unsatisfiable core [2022-11-02 20:39:53,724 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:53,770 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:39:53,839 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-11-02 20:39:53,840 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-11-02 20:39:54,251 INFO L356 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2022-11-02 20:39:54,252 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2022-11-02 20:39:54,414 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:39:54,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:39:54,849 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:39:54,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:39:55,118 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:39:55,193 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-02 20:39:55,193 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:55,614 WARN L833 $PredicateComparison]: unable to prove that (let ((.cse2 (+ c_~A~0.offset (* c_thread1Thread1of1ForFork0_~i~0 4)))) (and (forall ((v_ArrVal_147 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_147) c_~A~0.base))) (let ((.cse0 (select .cse1 .cse2))) (or (< c_~min~0 .cse0) (<= .cse0 (select .cse1 c_~A~0.offset)))))) (forall ((v_ArrVal_147 (Array Int Int))) (let ((.cse3 (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_147) c_~A~0.base))) (or (<= c_~min~0 (select .cse3 c_~A~0.offset)) (not (< c_~min~0 (select .cse3 .cse2)))))))) is different from false [2022-11-02 20:39:55,753 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-02 20:39:55,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46292935] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:55,754 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:55,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 23, 11] total 40 [2022-11-02 20:39:55,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [231919731] [2022-11-02 20:39:55,754 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:55,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-11-02 20:39:55,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:55,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-11-02 20:39:55,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=150, Invalid=1335, Unknown=1, NotChecked=74, Total=1560 [2022-11-02 20:39:55,760 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 176 [2022-11-02 20:39:55,764 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 155 transitions, 384 flow. Second operand has 40 states, 40 states have (on average 73.65) internal successors, (2946), 40 states have internal predecessors, (2946), 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) [2022-11-02 20:39:55,764 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:55,764 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 176 [2022-11-02 20:39:55,764 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:01,662 INFO L130 PetriNetUnfolder]: 4796/9364 cut-off events. [2022-11-02 20:40:01,663 INFO L131 PetriNetUnfolder]: For 5186/5186 co-relation queries the response was YES. [2022-11-02 20:40:01,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21746 conditions, 9364 events. 4796/9364 cut-off events. For 5186/5186 co-relation queries the response was YES. Maximal size of possible extension queue 498. Compared 78472 event pairs, 205 based on Foata normal form. 3/9305 useless extension candidates. Maximal degree in co-relation 21733. Up to 1158 conditions per place. [2022-11-02 20:40:01,728 INFO L137 encePairwiseOnDemand]: 150/176 looper letters, 254 selfloop transitions, 45 changer transitions 125/484 dead transitions. [2022-11-02 20:40:01,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 484 transitions, 2287 flow [2022-11-02 20:40:01,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 20:40:01,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-02 20:40:01,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3201 transitions. [2022-11-02 20:40:01,737 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.44359756097560976 [2022-11-02 20:40:01,737 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3201 transitions. [2022-11-02 20:40:01,737 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3201 transitions. [2022-11-02 20:40:01,739 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:01,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3201 transitions. [2022-11-02 20:40:01,747 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 78.07317073170732) internal successors, (3201), 41 states have internal predecessors, (3201), 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) [2022-11-02 20:40:01,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 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) [2022-11-02 20:40:01,761 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 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) [2022-11-02 20:40:01,761 INFO L175 Difference]: Start difference. First operand has 168 places, 155 transitions, 384 flow. Second operand 41 states and 3201 transitions. [2022-11-02 20:40:01,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 484 transitions, 2287 flow [2022-11-02 20:40:01,790 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 484 transitions, 2273 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-02 20:40:01,797 INFO L231 Difference]: Finished difference. Result has 226 places, 187 transitions, 724 flow [2022-11-02 20:40:01,797 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=375, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=155, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=724, PETRI_PLACES=226, PETRI_TRANSITIONS=187} [2022-11-02 20:40:01,798 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 66 predicate places. [2022-11-02 20:40:01,799 INFO L495 AbstractCegarLoop]: Abstraction has has 226 places, 187 transitions, 724 flow [2022-11-02 20:40:01,800 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 40 states have (on average 73.65) internal successors, (2946), 40 states have internal predecessors, (2946), 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) [2022-11-02 20:40:01,800 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:01,801 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:01,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:02,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-02 20:40:02,015 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:40:02,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:02,015 INFO L85 PathProgramCache]: Analyzing trace with hash -548558845, now seen corresponding path program 2 times [2022-11-02 20:40:02,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:02,015 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1355297365] [2022-11-02 20:40:02,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:02,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:02,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:02,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:40:02,715 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:02,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1355297365] [2022-11-02 20:40:02,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1355297365] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:02,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662454252] [2022-11-02 20:40:02,716 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:40:02,716 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:02,716 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:02,717 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:02,742 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:40:02,898 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:40:02,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:02,915 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-02 20:40:02,919 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:03,189 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:40:03,257 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:40:03,257 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:03,520 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:40:03,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662454252] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:03,521 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:03,521 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 14] total 23 [2022-11-02 20:40:03,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [38283042] [2022-11-02 20:40:03,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:03,522 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-02 20:40:03,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:03,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-02 20:40:03,524 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=420, Unknown=0, NotChecked=0, Total=506 [2022-11-02 20:40:03,525 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 176 [2022-11-02 20:40:03,526 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 226 places, 187 transitions, 724 flow. Second operand has 9 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 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) [2022-11-02 20:40:03,527 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:03,527 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 176 [2022-11-02 20:40:03,527 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:06,767 INFO L130 PetriNetUnfolder]: 4294/11656 cut-off events. [2022-11-02 20:40:06,767 INFO L131 PetriNetUnfolder]: For 78115/78782 co-relation queries the response was YES. [2022-11-02 20:40:06,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44205 conditions, 11656 events. 4294/11656 cut-off events. For 78115/78782 co-relation queries the response was YES. Maximal size of possible extension queue 634. Compared 123852 event pairs, 1198 based on Foata normal form. 293/11498 useless extension candidates. Maximal degree in co-relation 44171. Up to 2532 conditions per place. [2022-11-02 20:40:06,985 INFO L137 encePairwiseOnDemand]: 167/176 looper letters, 140 selfloop transitions, 10 changer transitions 108/363 dead transitions. [2022-11-02 20:40:06,986 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 363 transitions, 2396 flow [2022-11-02 20:40:06,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-02 20:40:06,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-02 20:40:06,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1423 transitions. [2022-11-02 20:40:06,990 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.6737689393939394 [2022-11-02 20:40:06,990 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1423 transitions. [2022-11-02 20:40:06,990 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1423 transitions. [2022-11-02 20:40:06,991 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:06,991 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1423 transitions. [2022-11-02 20:40:06,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 118.58333333333333) internal successors, (1423), 12 states have internal predecessors, (1423), 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) [2022-11-02 20:40:06,998 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 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) [2022-11-02 20:40:06,999 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 176.0) internal successors, (2288), 13 states have internal predecessors, (2288), 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) [2022-11-02 20:40:06,999 INFO L175 Difference]: Start difference. First operand has 226 places, 187 transitions, 724 flow. Second operand 12 states and 1423 transitions. [2022-11-02 20:40:06,999 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 363 transitions, 2396 flow [2022-11-02 20:40:07,375 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 363 transitions, 2245 flow, removed 62 selfloop flow, removed 24 redundant places. [2022-11-02 20:40:07,379 INFO L231 Difference]: Finished difference. Result has 210 places, 191 transitions, 766 flow [2022-11-02 20:40:07,380 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=669, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=177, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=766, PETRI_PLACES=210, PETRI_TRANSITIONS=191} [2022-11-02 20:40:07,380 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 50 predicate places. [2022-11-02 20:40:07,381 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 191 transitions, 766 flow [2022-11-02 20:40:07,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.22222222222223) internal successors, (1010), 9 states have internal predecessors, (1010), 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) [2022-11-02 20:40:07,381 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:07,382 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:07,407 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:07,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-02 20:40:07,591 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:40:07,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:07,591 INFO L85 PathProgramCache]: Analyzing trace with hash -1727704463, now seen corresponding path program 3 times [2022-11-02 20:40:07,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:07,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1257766516] [2022-11-02 20:40:07,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:07,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:07,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:08,440 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:40:08,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:08,440 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1257766516] [2022-11-02 20:40:08,441 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1257766516] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:08,441 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911681842] [2022-11-02 20:40:08,441 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:40:08,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:08,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:08,447 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:08,457 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:40:08,579 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 20:40:08,580 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:08,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 12 conjunts are in the unsatisfiable core [2022-11-02 20:40:08,585 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:08,825 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-11-02 20:40:08,826 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:08,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911681842] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:08,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:08,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 20 [2022-11-02 20:40:08,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [638437102] [2022-11-02 20:40:08,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:08,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:40:08,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:08,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:40:08,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=335, Unknown=0, NotChecked=0, Total=380 [2022-11-02 20:40:08,831 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 176 [2022-11-02 20:40:08,832 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 191 transitions, 766 flow. Second operand has 8 states, 8 states have (on average 130.5) internal successors, (1044), 8 states have internal predecessors, (1044), 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) [2022-11-02 20:40:08,832 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:08,833 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 176 [2022-11-02 20:40:08,833 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:10,015 INFO L130 PetriNetUnfolder]: 790/3883 cut-off events. [2022-11-02 20:40:10,016 INFO L131 PetriNetUnfolder]: For 16446/16683 co-relation queries the response was YES. [2022-11-02 20:40:10,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12002 conditions, 3883 events. 790/3883 cut-off events. For 16446/16683 co-relation queries the response was YES. Maximal size of possible extension queue 213. Compared 39477 event pairs, 136 based on Foata normal form. 44/3813 useless extension candidates. Maximal degree in co-relation 11969. Up to 811 conditions per place. [2022-11-02 20:40:10,051 INFO L137 encePairwiseOnDemand]: 164/176 looper letters, 42 selfloop transitions, 9 changer transitions 52/233 dead transitions. [2022-11-02 20:40:10,051 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 213 places, 233 transitions, 1291 flow [2022-11-02 20:40:10,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:40:10,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:40:10,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1442 transitions. [2022-11-02 20:40:10,055 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.7448347107438017 [2022-11-02 20:40:10,055 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1442 transitions. [2022-11-02 20:40:10,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1442 transitions. [2022-11-02 20:40:10,056 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:10,056 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1442 transitions. [2022-11-02 20:40:10,059 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 131.0909090909091) internal successors, (1442), 11 states have internal predecessors, (1442), 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) [2022-11-02 20:40:10,063 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 176.0) internal successors, (2112), 12 states have internal predecessors, (2112), 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) [2022-11-02 20:40:10,064 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 176.0) internal successors, (2112), 12 states have internal predecessors, (2112), 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) [2022-11-02 20:40:10,064 INFO L175 Difference]: Start difference. First operand has 210 places, 191 transitions, 766 flow. Second operand 11 states and 1442 transitions. [2022-11-02 20:40:10,064 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 213 places, 233 transitions, 1291 flow [2022-11-02 20:40:10,110 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 233 transitions, 1220 flow, removed 31 selfloop flow, removed 9 redundant places. [2022-11-02 20:40:10,113 INFO L231 Difference]: Finished difference. Result has 208 places, 176 transitions, 631 flow [2022-11-02 20:40:10,113 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=735, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=191, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=182, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=631, PETRI_PLACES=208, PETRI_TRANSITIONS=176} [2022-11-02 20:40:10,115 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 48 predicate places. [2022-11-02 20:40:10,116 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 176 transitions, 631 flow [2022-11-02 20:40:10,116 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 130.5) internal successors, (1044), 8 states have internal predecessors, (1044), 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) [2022-11-02 20:40:10,116 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:10,117 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:10,156 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:10,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:10,343 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:40:10,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:10,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1791204415, now seen corresponding path program 4 times [2022-11-02 20:40:10,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:10,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [570578581] [2022-11-02 20:40:10,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:10,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:10,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:11,143 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:40:11,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:11,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [570578581] [2022-11-02 20:40:11,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [570578581] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:11,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689959848] [2022-11-02 20:40:11,144 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-02 20:40:11,144 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:11,145 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:11,146 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:11,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:40:11,287 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-02 20:40:11,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:11,290 INFO L263 TraceCheckSpWp]: Trace formula consists of 324 conjuncts, 43 conjunts are in the unsatisfiable core [2022-11-02 20:40:11,296 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:11,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-02 20:40:12,201 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:40:12,271 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-02 20:40:12,375 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-02 20:40:12,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-02 20:40:12,554 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-02 20:40:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-02 20:40:12,711 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:13,153 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (<= (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_248) c_~A~0.base) c_~A~0.offset) c_~max~0)) is different from false [2022-11-02 20:40:13,178 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int))) (< (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_248) c_~A~0.base) c_~A~0.offset) (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) 1))) is different from false [2022-11-02 20:40:13,190 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int)) (v_ArrVal_247 (Array Int Int))) (let ((.cse0 (store |c_#memory_int| |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_247))) (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_248) c_~A~0.base) c_~A~0.offset) (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) 1)))) is different from false [2022-11-02 20:40:13,227 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int)) (v_ArrVal_247 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_247))) (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_248) c_~A~0.base) c_~A~0.offset) (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) 1)))) is different from false [2022-11-02 20:40:13,314 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int)) (v_ArrVal_247 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_247))) (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_248) |c_ULTIMATE.start_main_#t~ret17#1.base|) |c_ULTIMATE.start_main_#t~ret17#1.offset|) (+ (select (select .cse0 |c_ULTIMATE.start_main_#t~ret17#1.base|) |c_ULTIMATE.start_main_#t~ret17#1.offset|) 1)))) is different from false [2022-11-02 20:40:13,336 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int)) (v_ArrVal_247 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_247))) (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_248) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|) 1)))) is different from false [2022-11-02 20:40:13,344 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_248 (Array Int Int)) (v_ArrVal_247 (Array Int Int)) (v_ArrVal_246 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_246) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_247))) (< (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_248) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) (+ (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.base|) |c_ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset|) 1)))) is different from false [2022-11-02 20:40:13,373 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-02 20:40:13,374 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 52 treesize of output 41 [2022-11-02 20:40:13,380 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2262 treesize of output 2102 [2022-11-02 20:40:13,543 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2006 treesize of output 1878 [2022-11-02 20:40:13,564 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1878 treesize of output 1750 [2022-11-02 20:40:13,592 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 1750 treesize of output 1670 [2022-11-02 20:40:33,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 1 not checked. [2022-11-02 20:40:33,849 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689959848] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:33,850 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:33,850 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 22, 20] total 50 [2022-11-02 20:40:33,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638182937] [2022-11-02 20:40:33,850 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:33,851 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-11-02 20:40:33,851 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:33,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-11-02 20:40:33,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=195, Invalid=1632, Unknown=7, NotChecked=616, Total=2450 [2022-11-02 20:40:33,856 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 176 [2022-11-02 20:40:33,861 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 176 transitions, 631 flow. Second operand has 50 states, 50 states have (on average 77.24) internal successors, (3862), 50 states have internal predecessors, (3862), 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) [2022-11-02 20:40:33,861 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:33,861 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 176 [2022-11-02 20:40:33,861 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:39,348 INFO L130 PetriNetUnfolder]: 2704/7897 cut-off events. [2022-11-02 20:40:39,349 INFO L131 PetriNetUnfolder]: For 34383/34717 co-relation queries the response was YES. [2022-11-02 20:40:39,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26863 conditions, 7897 events. 2704/7897 cut-off events. For 34383/34717 co-relation queries the response was YES. Maximal size of possible extension queue 407. Compared 79169 event pairs, 114 based on Foata normal form. 151/7860 useless extension candidates. Maximal degree in co-relation 26834. Up to 1526 conditions per place. [2022-11-02 20:40:39,427 INFO L137 encePairwiseOnDemand]: 151/176 looper letters, 120 selfloop transitions, 46 changer transitions 161/396 dead transitions. [2022-11-02 20:40:39,427 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 396 transitions, 2645 flow [2022-11-02 20:40:39,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2022-11-02 20:40:39,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2022-11-02 20:40:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 3279 transitions. [2022-11-02 20:40:39,445 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.4544068736141907 [2022-11-02 20:40:39,445 INFO L72 ComplementDD]: Start complementDD. Operand 41 states and 3279 transitions. [2022-11-02 20:40:39,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 3279 transitions. [2022-11-02 20:40:39,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:39,448 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 41 states and 3279 transitions. [2022-11-02 20:40:39,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 42 states, 41 states have (on average 79.97560975609755) internal successors, (3279), 41 states have internal predecessors, (3279), 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) [2022-11-02 20:40:39,485 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 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) [2022-11-02 20:40:39,489 INFO L81 ComplementDD]: Finished complementDD. Result has 42 states, 42 states have (on average 176.0) internal successors, (7392), 42 states have internal predecessors, (7392), 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) [2022-11-02 20:40:39,490 INFO L175 Difference]: Start difference. First operand has 208 places, 176 transitions, 631 flow. Second operand 41 states and 3279 transitions. [2022-11-02 20:40:39,490 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 241 places, 396 transitions, 2645 flow [2022-11-02 20:40:39,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 230 places, 396 transitions, 2507 flow, removed 55 selfloop flow, removed 11 redundant places. [2022-11-02 20:40:39,594 INFO L231 Difference]: Finished difference. Result has 247 places, 190 transitions, 922 flow [2022-11-02 20:40:39,595 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=190, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=176, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=41, PETRI_FLOW=922, PETRI_PLACES=247, PETRI_TRANSITIONS=190} [2022-11-02 20:40:39,596 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 87 predicate places. [2022-11-02 20:40:39,596 INFO L495 AbstractCegarLoop]: Abstraction has has 247 places, 190 transitions, 922 flow [2022-11-02 20:40:39,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 77.24) internal successors, (3862), 50 states have internal predecessors, (3862), 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) [2022-11-02 20:40:39,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:39,598 INFO L208 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-02 20:40:39,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:39,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:39,815 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-02 20:40:39,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:39,815 INFO L85 PathProgramCache]: Analyzing trace with hash 2034403663, now seen corresponding path program 5 times [2022-11-02 20:40:39,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:39,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [823407278] [2022-11-02 20:40:39,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:39,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:41,635 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-02 20:40:41,636 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:41,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [823407278] [2022-11-02 20:40:41,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [823407278] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:41,636 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:41,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [31] imperfect sequences [] total 31 [2022-11-02 20:40:41,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028013058] [2022-11-02 20:40:41,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:41,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-11-02 20:40:41,637 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:41,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-11-02 20:40:41,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=843, Unknown=0, NotChecked=0, Total=930 [2022-11-02 20:40:41,641 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 66 out of 176 [2022-11-02 20:40:41,643 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 247 places, 190 transitions, 922 flow. Second operand has 31 states, 31 states have (on average 68.87096774193549) internal successors, (2135), 31 states have internal predecessors, (2135), 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) [2022-11-02 20:40:41,643 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:41,643 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 66 of 176 [2022-11-02 20:40:41,643 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:48,189 INFO L130 PetriNetUnfolder]: 5049/10876 cut-off events. [2022-11-02 20:40:48,190 INFO L131 PetriNetUnfolder]: For 42683/43138 co-relation queries the response was YES. [2022-11-02 20:40:48,270 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37919 conditions, 10876 events. 5049/10876 cut-off events. For 42683/43138 co-relation queries the response was YES. Maximal size of possible extension queue 600. Compared 100871 event pairs, 689 based on Foata normal form. 446/11057 useless extension candidates. Maximal degree in co-relation 37878. Up to 2609 conditions per place. [2022-11-02 20:40:48,280 INFO L137 encePairwiseOnDemand]: 142/176 looper letters, 0 selfloop transitions, 0 changer transitions 355/355 dead transitions. [2022-11-02 20:40:48,280 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 269 places, 355 transitions, 2878 flow [2022-11-02 20:40:48,280 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2022-11-02 20:40:48,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2022-11-02 20:40:48,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 3045 transitions. [2022-11-02 20:40:48,287 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.40235200845665964 [2022-11-02 20:40:48,288 INFO L72 ComplementDD]: Start complementDD. Operand 43 states and 3045 transitions. [2022-11-02 20:40:48,288 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 3045 transitions. [2022-11-02 20:40:48,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:48,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 43 states and 3045 transitions. [2022-11-02 20:40:48,294 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 44 states, 43 states have (on average 70.81395348837209) internal successors, (3045), 43 states have internal predecessors, (3045), 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) [2022-11-02 20:40:48,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 44 states, 44 states have (on average 176.0) internal successors, (7744), 44 states have internal predecessors, (7744), 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) [2022-11-02 20:40:48,306 INFO L81 ComplementDD]: Finished complementDD. Result has 44 states, 44 states have (on average 176.0) internal successors, (7744), 44 states have internal predecessors, (7744), 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) [2022-11-02 20:40:48,307 INFO L175 Difference]: Start difference. First operand has 247 places, 190 transitions, 922 flow. Second operand 43 states and 3045 transitions. [2022-11-02 20:40:48,307 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 269 places, 355 transitions, 2878 flow [2022-11-02 20:40:48,608 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 243 places, 355 transitions, 2486 flow, removed 158 selfloop flow, removed 26 redundant places. [2022-11-02 20:40:48,611 INFO L231 Difference]: Finished difference. Result has 243 places, 0 transitions, 0 flow [2022-11-02 20:40:48,611 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=176, PETRI_DIFFERENCE_MINUEND_FLOW=775, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=187, PETRI_DIFFERENCE_SUBTRAHEND_STATES=43, PETRI_FLOW=0, PETRI_PLACES=243, PETRI_TRANSITIONS=0} [2022-11-02 20:40:48,612 INFO L287 CegarLoopForPetriNet]: 160 programPoint places, 83 predicate places. [2022-11-02 20:40:48,612 INFO L495 AbstractCegarLoop]: Abstraction has has 243 places, 0 transitions, 0 flow [2022-11-02 20:40:48,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 68.87096774193549) internal successors, (2135), 31 states have internal predecessors, (2135), 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) [2022-11-02 20:40:48,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2022-11-02 20:40:48,616 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2022-11-02 20:40:48,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2022-11-02 20:40:48,617 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2022-11-02 20:40:48,617 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-02 20:40:48,618 INFO L444 BasicCegarLoop]: Path program histogram: [5, 1, 1, 1, 1, 1] [2022-11-02 20:40:48,621 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-02 20:40:48,621 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-02 20:40:48,626 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.11 08:40:48 BasicIcfg [2022-11-02 20:40:48,626 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-02 20:40:48,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-02 20:40:48,627 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-02 20:40:48,627 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-02 20:40:48,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:46" (3/4) ... [2022-11-02 20:40:48,630 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-02 20:40:48,636 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-02 20:40:48,636 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-02 20:40:48,636 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2022-11-02 20:40:48,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 25 nodes and edges [2022-11-02 20:40:48,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-02 20:40:48,641 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-02 20:40:48,642 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-02 20:40:48,679 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/witness.graphml [2022-11-02 20:40:48,679 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-02 20:40:48,680 INFO L158 Benchmark]: Toolchain (without parser) took 62966.28ms. Allocated memory was 94.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 73.9MB in the beginning and 648.2MB in the end (delta: -574.2MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-02 20:40:48,680 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 70.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:40:48,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 315.38ms. Allocated memory is still 94.4MB. Free memory was 73.9MB in the beginning and 67.4MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2022-11-02 20:40:48,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.92ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 65.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-02 20:40:48,681 INFO L158 Benchmark]: Boogie Preprocessor took 32.89ms. Allocated memory is still 94.4MB. Free memory was 65.3MB in the beginning and 63.9MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:40:48,682 INFO L158 Benchmark]: RCFGBuilder took 695.04ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 42.3MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-11-02 20:40:48,682 INFO L158 Benchmark]: TraceAbstraction took 61823.79ms. Allocated memory was 94.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 41.6MB in the beginning and 652.4MB in the end (delta: -610.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. [2022-11-02 20:40:48,682 INFO L158 Benchmark]: Witness Printer took 53.01ms. Allocated memory is still 1.8GB. Free memory was 652.4MB in the beginning and 648.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-11-02 20:40:48,684 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 94.4MB. Free memory was 70.3MB in the beginning and 70.2MB in the end (delta: 77.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 315.38ms. Allocated memory is still 94.4MB. Free memory was 73.9MB in the beginning and 67.4MB in the end (delta: 6.5MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 39.92ms. Allocated memory is still 94.4MB. Free memory was 67.4MB in the beginning and 65.3MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 32.89ms. Allocated memory is still 94.4MB. Free memory was 65.3MB in the beginning and 63.9MB in the end (delta: 1.4MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * RCFGBuilder took 695.04ms. Allocated memory is still 94.4MB. Free memory was 63.6MB in the beginning and 42.3MB in the end (delta: 21.3MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 61823.79ms. Allocated memory was 94.4MB in the beginning and 1.8GB in the end (delta: 1.7GB). Free memory was 41.6MB in the beginning and 652.4MB in the end (delta: -610.8MB). Peak memory consumption was 1.1GB. Max. memory is 16.1GB. * Witness Printer took 53.01ms. Allocated memory is still 1.8GB. Free memory was 652.4MB in the beginning and 648.2MB in the end (delta: 4.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 115]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 194 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.1s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 61.7s, OverallIterations: 10, TraceHistogramMax: 1, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 25.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2963 SdHoareTripleChecker+Valid, 4.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2963 mSDsluCounter, 3922 SdHoareTripleChecker+Invalid, 3.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 1322 IncrementalHoareTripleChecker+Unchecked, 4397 mSDsCounter, 419 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4743 IncrementalHoareTripleChecker+Invalid, 6484 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 419 mSolverCounterUnsat, 419 mSDtfsCounter, 4743 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 1870 GetRequests, 1530 SyntacticMatches, 14 SemanticMatches, 326 ConstructedPredicates, 8 IntricatePredicates, 0 DeprecatedPredicates, 3833 ImplicationChecksByTransitivity, 13.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=922occurred in iteration=9, InterpolantAutomatonStates: 177, 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: 0.2s SsaConstructionTime, 0.9s SatisfiabilityAnalysisTime, 33.1s InterpolantComputationTime, 2290 NumberOfCodeBlocks, 2268 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 2990 ConstructedInterpolants, 44 QuantifiedInterpolants, 15050 SizeOfPredicates, 83 NumberOfNonLiveVariables, 1878 ConjunctsInSsa, 141 ConjunctsInUnsatCore, 21 InterpolantComputations, 8 PerfectInterpolantSequences, 31/48 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 - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-02 20:40:48,729 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_172cea27-650e-41e0-8952-b264996d4901/bin/uautomizer-Dbtcem3rbc/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 Result: TRUE