./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/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_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/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_f602bedf-3999-4e50-865a-c1ea55211f75/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 b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 --- 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 20:39:50,886 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-02 20:39:50,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-02 20:39:50,914 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-02 20:39:50,914 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-02 20:39:50,915 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-02 20:39:50,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-02 20:39:50,919 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-02 20:39:50,921 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-02 20:39:50,922 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-02 20:39:50,923 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-02 20:39:50,924 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-02 20:39:50,925 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-02 20:39:50,926 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-02 20:39:50,927 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-02 20:39:50,928 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-02 20:39:50,930 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-02 20:39:50,931 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-02 20:39:50,932 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-02 20:39:50,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-02 20:39:50,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-02 20:39:50,938 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-02 20:39:50,939 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-02 20:39:50,940 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-02 20:39:50,943 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-02 20:39:50,944 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-02 20:39:50,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-02 20:39:50,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-02 20:39:50,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-02 20:39:50,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-02 20:39:50,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-02 20:39:50,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-02 20:39:50,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-02 20:39:50,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-02 20:39:50,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-02 20:39:50,952 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-02 20:39:50,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-02 20:39:50,953 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-02 20:39:50,953 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-02 20:39:50,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-02 20:39:50,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-02 20:39:50,956 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-02 20:39:50,982 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-02 20:39:50,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-02 20:39:50,983 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-02 20:39:50,983 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-02 20:39:50,984 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-02 20:39:50,984 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-02 20:39:50,985 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-02 20:39:50,985 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-02 20:39:50,986 INFO L138 SettingsManager]: * Use SBE=true [2022-11-02 20:39:50,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-02 20:39:50,986 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-02 20:39:50,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-02 20:39:50,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-02 20:39:50,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-02 20:39:50,994 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-02 20:39:50,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-02 20:39:50,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-02 20:39:50,995 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-02 20:39:50,995 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-02 20:39:50,995 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-02 20:39:50,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-02 20:39:50,996 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-02 20:39:50,996 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-02 20:39:50,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-02 20:39:50,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:50,997 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-02 20:39:50,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-02 20:39:50,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-02 20:39:51,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-02 20:39:51,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-02 20:39:51,001 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-02 20:39:51,001 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-02 20:39:51,001 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-02 20:39:51,001 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_f602bedf-3999-4e50-865a-c1ea55211f75/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b68e155d55184c39a54e11a2c420443b840324481c8995060134516395f2d120 [2022-11-02 20:39:51,328 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-02 20:39:51,360 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-02 20:39:51,363 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-02 20:39:51,365 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-02 20:39:51,365 INFO L275 PluginConnector]: CDTParser initialized [2022-11-02 20:39:51,367 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/../../sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-02 20:39:51,460 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/data/7f9982abc/54a36295a17a4518924cbf3782de8796/FLAG41d40dc0d [2022-11-02 20:39:52,076 INFO L306 CDTParser]: Found 1 translation units. [2022-11-02 20:39:52,077 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c [2022-11-02 20:39:52,085 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/data/7f9982abc/54a36295a17a4518924cbf3782de8796/FLAG41d40dc0d [2022-11-02 20:39:52,408 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/data/7f9982abc/54a36295a17a4518924cbf3782de8796 [2022-11-02 20:39:52,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-02 20:39:52,414 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-02 20:39:52,418 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:52,418 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-02 20:39:52,424 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-02 20:39:52,425 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:52,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10504f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52, skipping insertion in model container [2022-11-02 20:39:52,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:52,438 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-02 20:39:52,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-02 20:39:52,819 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_f602bedf-3999-4e50-865a-c1ea55211f75/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-02 20:39:52,838 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:52,853 INFO L203 MainTranslator]: Completed pre-run [2022-11-02 20:39:52,916 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_f602bedf-3999-4e50-865a-c1ea55211f75/sv-benchmarks/c/weaver/chl-chromosome-subst.wvr.c[3097,3110] [2022-11-02 20:39:52,921 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-02 20:39:52,947 INFO L208 MainTranslator]: Completed translation [2022-11-02 20:39:52,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52 WrapperNode [2022-11-02 20:39:52,949 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-02 20:39:52,950 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:52,950 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-02 20:39:52,950 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-02 20:39:52,960 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:52,986 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,030 INFO L138 Inliner]: procedures = 26, calls = 47, calls flagged for inlining = 17, calls inlined = 25, statements flattened = 287 [2022-11-02 20:39:53,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-02 20:39:53,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-02 20:39:53,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-02 20:39:53,032 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-02 20:39:53,044 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,044 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,061 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,061 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,072 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,094 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,096 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,098 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,114 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-02 20:39:53,115 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-02 20:39:53,115 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-02 20:39:53,115 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-02 20:39:53,116 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (1/1) ... [2022-11-02 20:39:53,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-02 20:39:53,142 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:53,160 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-02 20:39:53,190 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-02 20:39:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-02 20:39:53,237 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-02 20:39:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-02 20:39:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-02 20:39:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-02 20:39:53,238 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-02 20:39:53,238 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-02 20:39:53,240 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-02 20:39:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-02 20:39:53,241 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-02 20:39:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-02 20:39:53,241 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-02 20:39:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-02 20:39:53,242 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-02 20:39:53,242 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-02 20:39:53,244 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 20:39:53,460 INFO L235 CfgBuilder]: Building ICFG [2022-11-02 20:39:53,478 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-02 20:39:54,208 INFO L276 CfgBuilder]: Performing block encoding [2022-11-02 20:39:54,225 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-02 20:39:54,225 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-02 20:39:54,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:54 BoogieIcfgContainer [2022-11-02 20:39:54,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-02 20:39:54,232 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-02 20:39:54,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-02 20:39:54,237 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-02 20:39:54,237 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 08:39:52" (1/3) ... [2022-11-02 20:39:54,238 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b52f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:54, skipping insertion in model container [2022-11-02 20:39:54,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 08:39:52" (2/3) ... [2022-11-02 20:39:54,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@760b52f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 08:39:54, skipping insertion in model container [2022-11-02 20:39:54,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 08:39:54" (3/3) ... [2022-11-02 20:39:54,241 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-chromosome-subst.wvr.c [2022-11-02 20:39:54,257 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-02 20:39:54,272 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-02 20:39:54,272 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-02 20:39:54,272 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-02 20:39:54,417 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-02 20:39:54,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 357 places, 379 transitions, 782 flow [2022-11-02 20:39:54,742 INFO L130 PetriNetUnfolder]: 32/376 cut-off events. [2022-11-02 20:39:54,742 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:39:54,757 INFO L83 FinitePrefix]: Finished finitePrefix Result has 389 conditions, 376 events. 32/376 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 620 event pairs, 0 based on Foata normal form. 0/343 useless extension candidates. Maximal degree in co-relation 282. Up to 2 conditions per place. [2022-11-02 20:39:54,757 INFO L82 GeneralOperation]: Start removeDead. Operand has 357 places, 379 transitions, 782 flow [2022-11-02 20:39:54,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 343 places, 365 transitions, 748 flow [2022-11-02 20:39:54,802 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-02 20:39:54,816 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;@7a983b05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-02 20:39:54,816 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-02 20:39:54,958 INFO L130 PetriNetUnfolder]: 32/364 cut-off events. [2022-11-02 20:39:54,958 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-02 20:39:54,958 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:54,960 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:54,961 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 20:39:54,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:54,971 INFO L85 PathProgramCache]: Analyzing trace with hash -989365306, now seen corresponding path program 1 times [2022-11-02 20:39:54,983 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:54,984 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [201242030] [2022-11-02 20:39:54,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:54,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:55,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:55,519 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 20:39:55,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:55,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [201242030] [2022-11-02 20:39:55,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [201242030] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:55,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:55,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-02 20:39:55,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801440292] [2022-11-02 20:39:55,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:55,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-02 20:39:55,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:55,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-02 20:39:55,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-02 20:39:55,597 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 349 out of 379 [2022-11-02 20:39:55,607 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 343 places, 365 transitions, 748 flow. Second operand has 2 states, 2 states have (on average 354.0) internal successors, (708), 2 states have internal predecessors, (708), 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 20:39:55,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:55,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 349 of 379 [2022-11-02 20:39:55,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:55,736 INFO L130 PetriNetUnfolder]: 9/342 cut-off events. [2022-11-02 20:39:55,736 INFO L131 PetriNetUnfolder]: For 12/14 co-relation queries the response was YES. [2022-11-02 20:39:55,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 362 conditions, 342 events. 9/342 cut-off events. For 12/14 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 610 event pairs, 0 based on Foata normal form. 36/352 useless extension candidates. Maximal degree in co-relation 267. Up to 7 conditions per place. [2022-11-02 20:39:55,746 INFO L137 encePairwiseOnDemand]: 356/379 looper letters, 6 selfloop transitions, 0 changer transitions 8/342 dead transitions. [2022-11-02 20:39:55,746 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 344 places, 342 transitions, 714 flow [2022-11-02 20:39:55,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-02 20:39:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-02 20:39:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 727 transitions. [2022-11-02 20:39:55,772 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9591029023746702 [2022-11-02 20:39:55,773 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 727 transitions. [2022-11-02 20:39:55,774 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 727 transitions. [2022-11-02 20:39:55,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:55,785 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 727 transitions. [2022-11-02 20:39:55,791 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 363.5) internal successors, (727), 2 states have internal predecessors, (727), 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 20:39:55,806 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 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 20:39:55,807 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 379.0) internal successors, (1137), 3 states have internal predecessors, (1137), 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 20:39:55,809 INFO L175 Difference]: Start difference. First operand has 343 places, 365 transitions, 748 flow. Second operand 2 states and 727 transitions. [2022-11-02 20:39:55,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 344 places, 342 transitions, 714 flow [2022-11-02 20:39:55,820 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 338 places, 342 transitions, 702 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-02 20:39:55,830 INFO L231 Difference]: Finished difference. Result has 338 places, 334 transitions, 674 flow [2022-11-02 20:39:55,833 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=690, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=342, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=342, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=674, PETRI_PLACES=338, PETRI_TRANSITIONS=334} [2022-11-02 20:39:55,843 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, -5 predicate places. [2022-11-02 20:39:55,844 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 334 transitions, 674 flow [2022-11-02 20:39:55,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 354.0) internal successors, (708), 2 states have internal predecessors, (708), 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 20:39:55,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:55,845 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:55,846 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-02 20:39:55,846 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 20:39:55,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:55,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1475847326, now seen corresponding path program 1 times [2022-11-02 20:39:55,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:55,848 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1267013142] [2022-11-02 20:39:55,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:55,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:55,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:56,413 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 20:39:56,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:56,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1267013142] [2022-11-02 20:39:56,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1267013142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:56,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:56,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:56,415 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517072384] [2022-11-02 20:39:56,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:56,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:56,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:56,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:56,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:56,423 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-11-02 20:39:56,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 334 transitions, 674 flow. Second operand has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 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 20:39:56,426 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:56,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-11-02 20:39:56,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:56,728 INFO L130 PetriNetUnfolder]: 46/641 cut-off events. [2022-11-02 20:39:56,728 INFO L131 PetriNetUnfolder]: For 41/43 co-relation queries the response was YES. [2022-11-02 20:39:56,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 748 conditions, 641 events. 46/641 cut-off events. For 41/43 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 2682 event pairs, 18 based on Foata normal form. 0/604 useless extension candidates. Maximal degree in co-relation 745. Up to 55 conditions per place. [2022-11-02 20:39:56,739 INFO L137 encePairwiseOnDemand]: 374/379 looper letters, 29 selfloop transitions, 4 changer transitions 0/350 dead transitions. [2022-11-02 20:39:56,740 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 334 places, 350 transitions, 780 flow [2022-11-02 20:39:56,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:56,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:39:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1724 transitions. [2022-11-02 20:39:56,748 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9097625329815303 [2022-11-02 20:39:56,748 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1724 transitions. [2022-11-02 20:39:56,749 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1724 transitions. [2022-11-02 20:39:56,750 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:56,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1724 transitions. [2022-11-02 20:39:56,755 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 344.8) internal successors, (1724), 5 states have internal predecessors, (1724), 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 20:39:56,761 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 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 20:39:56,763 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 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 20:39:56,763 INFO L175 Difference]: Start difference. First operand has 338 places, 334 transitions, 674 flow. Second operand 5 states and 1724 transitions. [2022-11-02 20:39:56,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 334 places, 350 transitions, 780 flow [2022-11-02 20:39:56,767 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 334 places, 350 transitions, 780 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:39:56,776 INFO L231 Difference]: Finished difference. Result has 337 places, 337 transitions, 703 flow [2022-11-02 20:39:56,777 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=674, PETRI_DIFFERENCE_MINUEND_PLACES=330, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=703, PETRI_PLACES=337, PETRI_TRANSITIONS=337} [2022-11-02 20:39:56,778 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, -6 predicate places. [2022-11-02 20:39:56,778 INFO L495 AbstractCegarLoop]: Abstraction has has 337 places, 337 transitions, 703 flow [2022-11-02 20:39:56,798 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 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 20:39:56,799 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:56,800 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:56,800 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-02 20:39:56,800 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 20:39:56,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:56,801 INFO L85 PathProgramCache]: Analyzing trace with hash -2066112640, now seen corresponding path program 1 times [2022-11-02 20:39:56,801 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:56,802 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597605625] [2022-11-02 20:39:56,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:56,802 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:57,047 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 20:39:57,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:57,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597605625] [2022-11-02 20:39:57,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597605625] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:57,051 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:57,051 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:39:57,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806718666] [2022-11-02 20:39:57,052 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:57,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:39:57,056 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:57,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:39:57,057 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:39:57,059 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-11-02 20:39:57,062 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 337 places, 337 transitions, 703 flow. Second operand has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 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 20:39:57,062 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:57,062 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-11-02 20:39:57,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:57,600 INFO L130 PetriNetUnfolder]: 57/1416 cut-off events. [2022-11-02 20:39:57,600 INFO L131 PetriNetUnfolder]: For 25/69 co-relation queries the response was YES. [2022-11-02 20:39:57,619 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1632 conditions, 1416 events. 57/1416 cut-off events. For 25/69 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 8071 event pairs, 18 based on Foata normal form. 4/1338 useless extension candidates. Maximal degree in co-relation 1626. Up to 57 conditions per place. [2022-11-02 20:39:57,625 INFO L137 encePairwiseOnDemand]: 374/379 looper letters, 33 selfloop transitions, 4 changer transitions 0/357 dead transitions. [2022-11-02 20:39:57,625 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 341 places, 357 transitions, 829 flow [2022-11-02 20:39:57,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:57,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:39:57,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1728 transitions. [2022-11-02 20:39:57,631 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9118733509234829 [2022-11-02 20:39:57,631 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1728 transitions. [2022-11-02 20:39:57,633 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1728 transitions. [2022-11-02 20:39:57,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:57,635 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1728 transitions. [2022-11-02 20:39:57,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 345.6) internal successors, (1728), 5 states have internal predecessors, (1728), 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 20:39:57,645 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 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 20:39:57,647 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 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 20:39:57,648 INFO L175 Difference]: Start difference. First operand has 337 places, 337 transitions, 703 flow. Second operand 5 states and 1728 transitions. [2022-11-02 20:39:57,648 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 341 places, 357 transitions, 829 flow [2022-11-02 20:39:57,653 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 341 places, 357 transitions, 829 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:39:57,660 INFO L231 Difference]: Finished difference. Result has 344 places, 340 transitions, 732 flow [2022-11-02 20:39:57,661 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=703, PETRI_DIFFERENCE_MINUEND_PLACES=337, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=337, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=732, PETRI_PLACES=344, PETRI_TRANSITIONS=340} [2022-11-02 20:39:57,664 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 1 predicate places. [2022-11-02 20:39:57,665 INFO L495 AbstractCegarLoop]: Abstraction has has 344 places, 340 transitions, 732 flow [2022-11-02 20:39:57,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 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 20:39:57,666 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:57,666 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:57,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-02 20:39:57,667 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 20:39:57,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:57,669 INFO L85 PathProgramCache]: Analyzing trace with hash 794922654, now seen corresponding path program 1 times [2022-11-02 20:39:57,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:57,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [848068973] [2022-11-02 20:39:57,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:57,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:57,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:57,951 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 20:39:57,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:57,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [848068973] [2022-11-02 20:39:57,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [848068973] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:39:57,953 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:39:57,953 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-02 20:39:57,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [644131678] [2022-11-02 20:39:57,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:39:57,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:39:57,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:57,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:39:57,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-02 20:39:57,964 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 313 out of 379 [2022-11-02 20:39:57,967 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 344 places, 340 transitions, 732 flow. Second operand has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 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 20:39:57,968 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:57,968 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 313 of 379 [2022-11-02 20:39:57,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:39:58,347 INFO L130 PetriNetUnfolder]: 7/574 cut-off events. [2022-11-02 20:39:58,347 INFO L131 PetriNetUnfolder]: For 19/29 co-relation queries the response was YES. [2022-11-02 20:39:58,355 INFO L83 FinitePrefix]: Finished finitePrefix Result has 676 conditions, 574 events. 7/574 cut-off events. For 19/29 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1641 event pairs, 0 based on Foata normal form. 0/552 useless extension candidates. Maximal degree in co-relation 667. Up to 50 conditions per place. [2022-11-02 20:39:58,359 INFO L137 encePairwiseOnDemand]: 364/379 looper letters, 42 selfloop transitions, 12 changer transitions 0/352 dead transitions. [2022-11-02 20:39:58,359 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 352 transitions, 864 flow [2022-11-02 20:39:58,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:39:58,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:39:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1622 transitions. [2022-11-02 20:39:58,365 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8559366754617415 [2022-11-02 20:39:58,365 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1622 transitions. [2022-11-02 20:39:58,365 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1622 transitions. [2022-11-02 20:39:58,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:39:58,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1622 transitions. [2022-11-02 20:39:58,377 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 324.4) internal successors, (1622), 5 states have internal predecessors, (1622), 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 20:39:58,382 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 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 20:39:58,384 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 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 20:39:58,384 INFO L175 Difference]: Start difference. First operand has 344 places, 340 transitions, 732 flow. Second operand 5 states and 1622 transitions. [2022-11-02 20:39:58,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 352 transitions, 864 flow [2022-11-02 20:39:58,389 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 348 places, 352 transitions, 864 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:39:58,395 INFO L231 Difference]: Finished difference. Result has 349 places, 343 transitions, 780 flow [2022-11-02 20:39:58,396 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=732, PETRI_DIFFERENCE_MINUEND_PLACES=344, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=340, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=328, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=780, PETRI_PLACES=349, PETRI_TRANSITIONS=343} [2022-11-02 20:39:58,398 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 6 predicate places. [2022-11-02 20:39:58,404 INFO L495 AbstractCegarLoop]: Abstraction has has 349 places, 343 transitions, 780 flow [2022-11-02 20:39:58,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 319.0) internal successors, (1595), 5 states have internal predecessors, (1595), 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 20:39:58,405 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:39:58,406 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:39:58,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-02 20:39:58,406 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 20:39:58,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:39:58,407 INFO L85 PathProgramCache]: Analyzing trace with hash 690744834, now seen corresponding path program 1 times [2022-11-02 20:39:58,408 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:39:58,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [335889680] [2022-11-02 20:39:58,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:58,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:39:58,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:58,824 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 20:39:58,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:39:58,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [335889680] [2022-11-02 20:39:58,825 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [335889680] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:39:58,826 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1946440439] [2022-11-02 20:39:58,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:39:58,826 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:39:58,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:39:58,829 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:39:58,846 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-02 20:39:59,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:39:59,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:39:59,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:39:59,286 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 20:39:59,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:39:59,427 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 20:39:59,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1946440439] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:39:59,427 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:39:59,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-02 20:39:59,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094821334] [2022-11-02 20:39:59,428 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:39:59,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-02 20:39:59,430 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:39:59,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-02 20:39:59,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:39:59,438 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 379 [2022-11-02 20:39:59,446 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 349 places, 343 transitions, 780 flow. Second operand has 15 states, 15 states have (on average 314.3333333333333) internal successors, (4715), 15 states have internal predecessors, (4715), 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 20:39:59,447 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:39:59,447 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 379 [2022-11-02 20:39:59,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:00,103 INFO L130 PetriNetUnfolder]: 7/601 cut-off events. [2022-11-02 20:40:00,103 INFO L131 PetriNetUnfolder]: For 31/41 co-relation queries the response was YES. [2022-11-02 20:40:00,110 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 601 events. 7/601 cut-off events. For 31/41 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1616 event pairs, 0 based on Foata normal form. 6/588 useless extension candidates. Maximal degree in co-relation 742. Up to 41 conditions per place. [2022-11-02 20:40:00,112 INFO L137 encePairwiseOnDemand]: 355/379 looper letters, 45 selfloop transitions, 33 changer transitions 0/373 dead transitions. [2022-11-02 20:40:00,112 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 359 places, 373 transitions, 1002 flow [2022-11-02 20:40:00,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-02 20:40:00,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-02 20:40:00,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 3494 transitions. [2022-11-02 20:40:00,121 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8380906692252339 [2022-11-02 20:40:00,122 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 3494 transitions. [2022-11-02 20:40:00,122 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 3494 transitions. [2022-11-02 20:40:00,124 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:00,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 3494 transitions. [2022-11-02 20:40:00,134 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 317.6363636363636) internal successors, (3494), 11 states have internal predecessors, (3494), 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 20:40:00,143 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 379.0) internal successors, (4548), 12 states have internal predecessors, (4548), 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 20:40:00,146 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 379.0) internal successors, (4548), 12 states have internal predecessors, (4548), 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 20:40:00,146 INFO L175 Difference]: Start difference. First operand has 349 places, 343 transitions, 780 flow. Second operand 11 states and 3494 transitions. [2022-11-02 20:40:00,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 359 places, 373 transitions, 1002 flow [2022-11-02 20:40:00,152 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 356 places, 373 transitions, 984 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-02 20:40:00,166 INFO L231 Difference]: Finished difference. Result has 359 places, 361 transitions, 929 flow [2022-11-02 20:40:00,167 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=762, PETRI_DIFFERENCE_MINUEND_PLACES=346, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=343, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=319, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=929, PETRI_PLACES=359, PETRI_TRANSITIONS=361} [2022-11-02 20:40:00,171 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 16 predicate places. [2022-11-02 20:40:00,171 INFO L495 AbstractCegarLoop]: Abstraction has has 359 places, 361 transitions, 929 flow [2022-11-02 20:40:00,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 314.3333333333333) internal successors, (4715), 15 states have internal predecessors, (4715), 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 20:40:00,176 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:00,176 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:00,226 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:00,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:00,391 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 20:40:00,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash -1951661886, now seen corresponding path program 2 times [2022-11-02 20:40:00,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:00,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057184904] [2022-11-02 20:40:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:00,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:00,980 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-11-02 20:40:00,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:00,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057184904] [2022-11-02 20:40:00,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057184904] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:00,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [701659965] [2022-11-02 20:40:00,982 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:40:00,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:00,982 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:00,984 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:01,002 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-02 20:40:01,176 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:40:01,176 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:01,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 436 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:40:01,198 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:01,392 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-11-02 20:40:01,392 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:01,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [701659965] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:01,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:01,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2022-11-02 20:40:01,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586349935] [2022-11-02 20:40:01,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:01,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-02 20:40:01,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:01,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-02 20:40:01,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-11-02 20:40:01,398 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 301 out of 379 [2022-11-02 20:40:01,401 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 359 places, 361 transitions, 929 flow. Second operand has 6 states, 6 states have (on average 308.1666666666667) internal successors, (1849), 6 states have internal predecessors, (1849), 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 20:40:01,401 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:01,401 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 301 of 379 [2022-11-02 20:40:01,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:02,118 INFO L130 PetriNetUnfolder]: 53/1668 cut-off events. [2022-11-02 20:40:02,118 INFO L131 PetriNetUnfolder]: For 49/89 co-relation queries the response was YES. [2022-11-02 20:40:02,141 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2072 conditions, 1668 events. 53/1668 cut-off events. For 49/89 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 9678 event pairs, 20 based on Foata normal form. 7/1589 useless extension candidates. Maximal degree in co-relation 2058. Up to 137 conditions per place. [2022-11-02 20:40:02,147 INFO L137 encePairwiseOnDemand]: 372/379 looper letters, 52 selfloop transitions, 4 changer transitions 4/375 dead transitions. [2022-11-02 20:40:02,147 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 364 places, 375 transitions, 1084 flow [2022-11-02 20:40:02,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:40:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:40:02,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1867 transitions. [2022-11-02 20:40:02,153 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8210202286719437 [2022-11-02 20:40:02,156 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1867 transitions. [2022-11-02 20:40:02,156 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1867 transitions. [2022-11-02 20:40:02,157 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:02,157 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1867 transitions. [2022-11-02 20:40:02,161 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 311.1666666666667) internal successors, (1867), 6 states have internal predecessors, (1867), 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 20:40:02,166 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 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 20:40:02,167 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 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 20:40:02,168 INFO L175 Difference]: Start difference. First operand has 359 places, 361 transitions, 929 flow. Second operand 6 states and 1867 transitions. [2022-11-02 20:40:02,168 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 364 places, 375 transitions, 1084 flow [2022-11-02 20:40:02,178 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 361 places, 375 transitions, 1059 flow, removed 6 selfloop flow, removed 3 redundant places. [2022-11-02 20:40:02,184 INFO L231 Difference]: Finished difference. Result has 365 places, 364 transitions, 936 flow [2022-11-02 20:40:02,185 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=904, PETRI_DIFFERENCE_MINUEND_PLACES=356, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=361, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=357, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=936, PETRI_PLACES=365, PETRI_TRANSITIONS=364} [2022-11-02 20:40:02,187 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 22 predicate places. [2022-11-02 20:40:02,187 INFO L495 AbstractCegarLoop]: Abstraction has has 365 places, 364 transitions, 936 flow [2022-11-02 20:40:02,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 308.1666666666667) internal successors, (1849), 6 states have internal predecessors, (1849), 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 20:40:02,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:02,206 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:02,250 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:02,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:02,423 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 20:40:02,423 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:02,423 INFO L85 PathProgramCache]: Analyzing trace with hash 715261949, now seen corresponding path program 1 times [2022-11-02 20:40:02,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:02,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181438520] [2022-11-02 20:40:02,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:02,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:02,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:02,944 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:40:02,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:02,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181438520] [2022-11-02 20:40:02,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181438520] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:02,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1853545295] [2022-11-02 20:40:02,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:02,946 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:02,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:02,947 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:02,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-02 20:40:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:03,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 606 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-02 20:40:03,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:03,422 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:40:03,422 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:03,625 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-11-02 20:40:03,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1853545295] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:03,626 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:03,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-02 20:40:03,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325956332] [2022-11-02 20:40:03,627 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:03,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-02 20:40:03,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:03,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-02 20:40:03,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-02 20:40:03,639 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 310 out of 379 [2022-11-02 20:40:03,648 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 365 places, 364 transitions, 936 flow. Second operand has 22 states, 22 states have (on average 313.8636363636364) internal successors, (6905), 22 states have internal predecessors, (6905), 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 20:40:03,648 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:03,648 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 310 of 379 [2022-11-02 20:40:03,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:04,512 INFO L130 PetriNetUnfolder]: 7/607 cut-off events. [2022-11-02 20:40:04,512 INFO L131 PetriNetUnfolder]: For 75/85 co-relation queries the response was YES. [2022-11-02 20:40:04,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 908 conditions, 607 events. 7/607 cut-off events. For 75/85 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 1425 event pairs, 0 based on Foata normal form. 6/594 useless extension candidates. Maximal degree in co-relation 890. Up to 41 conditions per place. [2022-11-02 20:40:04,523 INFO L137 encePairwiseOnDemand]: 355/379 looper letters, 57 selfloop transitions, 51 changer transitions 0/406 dead transitions. [2022-11-02 20:40:04,523 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 379 places, 406 transitions, 1320 flow [2022-11-02 20:40:04,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-02 20:40:04,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-02 20:40:04,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 5384 transitions. [2022-11-02 20:40:04,536 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.83563557349061 [2022-11-02 20:40:04,536 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 5384 transitions. [2022-11-02 20:40:04,537 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 5384 transitions. [2022-11-02 20:40:04,540 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:04,540 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 5384 transitions. [2022-11-02 20:40:04,553 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 316.70588235294116) internal successors, (5384), 17 states have internal predecessors, (5384), 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 20:40:04,565 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 379.0) internal successors, (6822), 18 states have internal predecessors, (6822), 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 20:40:04,568 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 379.0) internal successors, (6822), 18 states have internal predecessors, (6822), 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 20:40:04,568 INFO L175 Difference]: Start difference. First operand has 365 places, 364 transitions, 936 flow. Second operand 17 states and 5384 transitions. [2022-11-02 20:40:04,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 379 places, 406 transitions, 1320 flow [2022-11-02 20:40:04,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 376 places, 406 transitions, 1314 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-02 20:40:04,581 INFO L231 Difference]: Finished difference. Result has 379 places, 385 transitions, 1193 flow [2022-11-02 20:40:04,581 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=930, PETRI_DIFFERENCE_MINUEND_PLACES=360, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=364, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=325, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=1193, PETRI_PLACES=379, PETRI_TRANSITIONS=385} [2022-11-02 20:40:04,582 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 36 predicate places. [2022-11-02 20:40:04,583 INFO L495 AbstractCegarLoop]: Abstraction has has 379 places, 385 transitions, 1193 flow [2022-11-02 20:40:04,585 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 313.8636363636364) internal successors, (6905), 22 states have internal predecessors, (6905), 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 20:40:04,585 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:04,586 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:04,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:04,801 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:04,802 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 20:40:04,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:04,802 INFO L85 PathProgramCache]: Analyzing trace with hash -730931757, now seen corresponding path program 1 times [2022-11-02 20:40:04,803 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:04,803 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762735642] [2022-11-02 20:40:04,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:04,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:04,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:05,075 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-02 20:40:05,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:05,076 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762735642] [2022-11-02 20:40:05,076 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762735642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:05,076 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:05,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-02 20:40:05,077 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679181722] [2022-11-02 20:40:05,077 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:05,078 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-02 20:40:05,078 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:05,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-02 20:40:05,079 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-02 20:40:05,081 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 338 out of 379 [2022-11-02 20:40:05,083 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 379 places, 385 transitions, 1193 flow. Second operand has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 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 20:40:05,083 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:05,083 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 338 of 379 [2022-11-02 20:40:05,083 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:05,999 INFO L130 PetriNetUnfolder]: 86/1732 cut-off events. [2022-11-02 20:40:05,999 INFO L131 PetriNetUnfolder]: For 178/316 co-relation queries the response was YES. [2022-11-02 20:40:06,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2271 conditions, 1732 events. 86/1732 cut-off events. For 178/316 co-relation queries the response was YES. Maximal size of possible extension queue 60. Compared 11624 event pairs, 36 based on Foata normal form. 6/1624 useless extension candidates. Maximal degree in co-relation 2252. Up to 105 conditions per place. [2022-11-02 20:40:06,051 INFO L137 encePairwiseOnDemand]: 374/379 looper letters, 31 selfloop transitions, 4 changer transitions 0/403 dead transitions. [2022-11-02 20:40:06,052 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 403 transitions, 1309 flow [2022-11-02 20:40:06,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-02 20:40:06,053 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-02 20:40:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1726 transitions. [2022-11-02 20:40:06,057 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9108179419525066 [2022-11-02 20:40:06,057 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1726 transitions. [2022-11-02 20:40:06,058 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1726 transitions. [2022-11-02 20:40:06,059 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:06,059 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1726 transitions. [2022-11-02 20:40:06,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 345.2) internal successors, (1726), 5 states have internal predecessors, (1726), 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 20:40:06,068 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 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 20:40:06,069 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 379.0) internal successors, (2274), 6 states have internal predecessors, (2274), 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 20:40:06,069 INFO L175 Difference]: Start difference. First operand has 379 places, 385 transitions, 1193 flow. Second operand 5 states and 1726 transitions. [2022-11-02 20:40:06,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 383 places, 403 transitions, 1309 flow [2022-11-02 20:40:06,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 375 places, 403 transitions, 1242 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-02 20:40:06,082 INFO L231 Difference]: Finished difference. Result has 378 places, 388 transitions, 1155 flow [2022-11-02 20:40:06,083 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1126, PETRI_DIFFERENCE_MINUEND_PLACES=371, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=385, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1155, PETRI_PLACES=378, PETRI_TRANSITIONS=388} [2022-11-02 20:40:06,087 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 35 predicate places. [2022-11-02 20:40:06,087 INFO L495 AbstractCegarLoop]: Abstraction has has 378 places, 388 transitions, 1155 flow [2022-11-02 20:40:06,088 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 340.5) internal successors, (1362), 4 states have internal predecessors, (1362), 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 20:40:06,088 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:06,089 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:06,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-02 20:40:06,090 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 20:40:06,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:06,091 INFO L85 PathProgramCache]: Analyzing trace with hash -778177851, now seen corresponding path program 2 times [2022-11-02 20:40:06,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:06,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544485135] [2022-11-02 20:40:06,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:06,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:06,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:07,352 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:40:07,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:07,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544485135] [2022-11-02 20:40:07,354 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544485135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:07,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-02 20:40:07,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-02 20:40:07,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491939876] [2022-11-02 20:40:07,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:07,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-02 20:40:07,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:07,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-02 20:40:07,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:40:07,363 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 296 out of 379 [2022-11-02 20:40:07,366 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 378 places, 388 transitions, 1155 flow. Second operand has 7 states, 7 states have (on average 303.0) internal successors, (2121), 7 states have internal predecessors, (2121), 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 20:40:07,366 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:07,366 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 296 of 379 [2022-11-02 20:40:07,366 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:08,180 INFO L130 PetriNetUnfolder]: 54/1221 cut-off events. [2022-11-02 20:40:08,181 INFO L131 PetriNetUnfolder]: For 172/298 co-relation queries the response was YES. [2022-11-02 20:40:08,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1854 conditions, 1221 events. 54/1221 cut-off events. For 172/298 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 6266 event pairs, 10 based on Foata normal form. 29/1193 useless extension candidates. Maximal degree in co-relation 1833. Up to 139 conditions per place. [2022-11-02 20:40:08,212 INFO L137 encePairwiseOnDemand]: 369/379 looper letters, 64 selfloop transitions, 10 changer transitions 5/411 dead transitions. [2022-11-02 20:40:08,212 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 386 places, 411 transitions, 1379 flow [2022-11-02 20:40:08,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-02 20:40:08,213 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-02 20:40:08,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2744 transitions. [2022-11-02 20:40:08,219 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8044561712107886 [2022-11-02 20:40:08,220 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2744 transitions. [2022-11-02 20:40:08,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2744 transitions. [2022-11-02 20:40:08,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:08,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2744 transitions. [2022-11-02 20:40:08,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 304.8888888888889) internal successors, (2744), 9 states have internal predecessors, (2744), 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 20:40:08,236 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 379.0) internal successors, (3790), 10 states have internal predecessors, (3790), 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 20:40:08,238 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 379.0) internal successors, (3790), 10 states have internal predecessors, (3790), 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 20:40:08,238 INFO L175 Difference]: Start difference. First operand has 378 places, 388 transitions, 1155 flow. Second operand 9 states and 2744 transitions. [2022-11-02 20:40:08,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 386 places, 411 transitions, 1379 flow [2022-11-02 20:40:08,245 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 386 places, 411 transitions, 1379 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:08,252 INFO L231 Difference]: Finished difference. Result has 391 places, 390 transitions, 1200 flow [2022-11-02 20:40:08,253 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1155, PETRI_DIFFERENCE_MINUEND_PLACES=378, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=388, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=378, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1200, PETRI_PLACES=391, PETRI_TRANSITIONS=390} [2022-11-02 20:40:08,254 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 48 predicate places. [2022-11-02 20:40:08,254 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 390 transitions, 1200 flow [2022-11-02 20:40:08,255 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 303.0) internal successors, (2121), 7 states have internal predecessors, (2121), 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 20:40:08,255 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:08,256 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:08,256 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-02 20:40:08,256 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 20:40:08,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:08,257 INFO L85 PathProgramCache]: Analyzing trace with hash 1440577849, now seen corresponding path program 1 times [2022-11-02 20:40:08,258 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:08,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038580321] [2022-11-02 20:40:08,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:08,258 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:08,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:08,606 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:40:08,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:08,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038580321] [2022-11-02 20:40:08,607 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038580321] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:08,607 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945879771] [2022-11-02 20:40:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:08,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:08,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:08,609 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:08,611 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-02 20:40:08,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:08,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 685 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-02 20:40:08,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:09,015 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:40:09,015 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:09,156 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:40:09,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945879771] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:09,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:09,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 11 [2022-11-02 20:40:09,158 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580542345] [2022-11-02 20:40:09,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:09,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-02 20:40:09,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:09,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-02 20:40:09,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2022-11-02 20:40:09,164 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 379 [2022-11-02 20:40:09,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 390 transitions, 1200 flow. Second operand has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 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 20:40:09,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:09,169 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 379 [2022-11-02 20:40:09,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:10,078 INFO L130 PetriNetUnfolder]: 76/1649 cut-off events. [2022-11-02 20:40:10,079 INFO L131 PetriNetUnfolder]: For 300/476 co-relation queries the response was YES. [2022-11-02 20:40:10,113 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2445 conditions, 1649 events. 76/1649 cut-off events. For 300/476 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 9509 event pairs, 10 based on Foata normal form. 30/1595 useless extension candidates. Maximal degree in co-relation 2418. Up to 45 conditions per place. [2022-11-02 20:40:10,120 INFO L137 encePairwiseOnDemand]: 371/379 looper letters, 56 selfloop transitions, 13 changer transitions 4/442 dead transitions. [2022-11-02 20:40:10,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 401 places, 442 transitions, 1510 flow [2022-11-02 20:40:10,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-02 20:40:10,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-02 20:40:10,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 4456 transitions. [2022-11-02 20:40:10,130 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9044043028211893 [2022-11-02 20:40:10,131 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 4456 transitions. [2022-11-02 20:40:10,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 4456 transitions. [2022-11-02 20:40:10,134 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:10,134 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 4456 transitions. [2022-11-02 20:40:10,143 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 342.7692307692308) internal successors, (4456), 13 states have internal predecessors, (4456), 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 20:40:10,151 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 379.0) internal successors, (5306), 14 states have internal predecessors, (5306), 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 20:40:10,153 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 379.0) internal successors, (5306), 14 states have internal predecessors, (5306), 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 20:40:10,154 INFO L175 Difference]: Start difference. First operand has 391 places, 390 transitions, 1200 flow. Second operand 13 states and 4456 transitions. [2022-11-02 20:40:10,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 401 places, 442 transitions, 1510 flow [2022-11-02 20:40:10,161 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 442 transitions, 1487 flow, removed 5 selfloop flow, removed 5 redundant places. [2022-11-02 20:40:10,167 INFO L231 Difference]: Finished difference. Result has 399 places, 399 transitions, 1256 flow [2022-11-02 20:40:10,169 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1179, PETRI_DIFFERENCE_MINUEND_PLACES=384, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=390, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=381, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1256, PETRI_PLACES=399, PETRI_TRANSITIONS=399} [2022-11-02 20:40:10,170 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 56 predicate places. [2022-11-02 20:40:10,170 INFO L495 AbstractCegarLoop]: Abstraction has has 399 places, 399 transitions, 1256 flow [2022-11-02 20:40:10,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 340.0) internal successors, (3740), 11 states have internal predecessors, (3740), 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 20:40:10,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:10,172 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:10,210 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:10,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-02 20:40:10,392 INFO L420 AbstractCegarLoop]: === Iteration 11 === 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 20:40:10,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:10,392 INFO L85 PathProgramCache]: Analyzing trace with hash 46256049, now seen corresponding path program 2 times [2022-11-02 20:40:10,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:10,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250729153] [2022-11-02 20:40:10,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:10,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:10,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:11,096 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:40:11,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:11,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250729153] [2022-11-02 20:40:11,097 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1250729153] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:11,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234878886] [2022-11-02 20:40:11,098 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:40:11,098 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:11,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:11,099 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:11,107 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-02 20:40:11,307 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-02 20:40:11,307 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:11,310 INFO L263 TraceCheckSpWp]: Trace formula consists of 403 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:40:11,316 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:11,554 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-02 20:40:11,555 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:11,555 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234878886] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:11,555 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:11,555 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-02 20:40:11,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644645096] [2022-11-02 20:40:11,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:11,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:40:11,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:11,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:40:11,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:40:11,563 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 379 [2022-11-02 20:40:11,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 399 places, 399 transitions, 1256 flow. Second operand has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 20:40:11,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:11,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 379 [2022-11-02 20:40:11,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:17,762 INFO L130 PetriNetUnfolder]: 2777/12326 cut-off events. [2022-11-02 20:40:17,762 INFO L131 PetriNetUnfolder]: For 1818/5115 co-relation queries the response was YES. [2022-11-02 20:40:17,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18200 conditions, 12326 events. 2777/12326 cut-off events. For 1818/5115 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 145114 event pairs, 1677 based on Foata normal form. 2/10758 useless extension candidates. Maximal degree in co-relation 18173. Up to 3091 conditions per place. [2022-11-02 20:40:17,976 INFO L137 encePairwiseOnDemand]: 368/379 looper letters, 88 selfloop transitions, 18 changer transitions 10/461 dead transitions. [2022-11-02 20:40:17,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 461 transitions, 1633 flow [2022-11-02 20:40:17,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:40:17,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:40:17,983 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3047 transitions. [2022-11-02 20:40:17,985 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.803957783641161 [2022-11-02 20:40:17,985 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3047 transitions. [2022-11-02 20:40:17,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3047 transitions. [2022-11-02 20:40:17,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:17,988 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3047 transitions. [2022-11-02 20:40:17,994 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 304.7) internal successors, (3047), 10 states have internal predecessors, (3047), 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 20:40:18,000 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 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 20:40:18,002 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 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 20:40:18,002 INFO L175 Difference]: Start difference. First operand has 399 places, 399 transitions, 1256 flow. Second operand 10 states and 3047 transitions. [2022-11-02 20:40:18,002 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 461 transitions, 1633 flow [2022-11-02 20:40:18,024 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 406 places, 461 transitions, 1617 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-02 20:40:18,031 INFO L231 Difference]: Finished difference. Result has 412 places, 416 transitions, 1358 flow [2022-11-02 20:40:18,032 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1240, PETRI_DIFFERENCE_MINUEND_PLACES=397, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=399, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=391, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1358, PETRI_PLACES=412, PETRI_TRANSITIONS=416} [2022-11-02 20:40:18,033 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 69 predicate places. [2022-11-02 20:40:18,033 INFO L495 AbstractCegarLoop]: Abstraction has has 412 places, 416 transitions, 1358 flow [2022-11-02 20:40:18,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 20:40:18,034 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:18,035 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:18,083 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:18,250 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-02 20:40:18,251 INFO L420 AbstractCegarLoop]: === Iteration 12 === 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 20:40:18,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:18,252 INFO L85 PathProgramCache]: Analyzing trace with hash -1890656023, now seen corresponding path program 3 times [2022-11-02 20:40:18,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:18,252 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1621263366] [2022-11-02 20:40:18,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:18,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:18,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:19,033 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 225 trivial. 0 not checked. [2022-11-02 20:40:19,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1621263366] [2022-11-02 20:40:19,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1621263366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:19,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [903086182] [2022-11-02 20:40:19,035 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:40:19,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:19,035 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:19,036 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:19,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-02 20:40:19,267 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-02 20:40:19,267 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:19,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-02 20:40:19,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:19,521 INFO L134 CoverageAnalysis]: Checked inductivity of 327 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2022-11-02 20:40:19,522 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-02 20:40:19,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [903086182] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-02 20:40:19,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-02 20:40:19,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [10] total 16 [2022-11-02 20:40:19,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116220320] [2022-11-02 20:40:19,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:19,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-02 20:40:19,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:19,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-02 20:40:19,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-02 20:40:19,531 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 293 out of 379 [2022-11-02 20:40:19,534 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 412 places, 416 transitions, 1358 flow. Second operand has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 20:40:19,535 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:19,535 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 293 of 379 [2022-11-02 20:40:19,535 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:24,709 INFO L130 PetriNetUnfolder]: 2756/12501 cut-off events. [2022-11-02 20:40:24,709 INFO L131 PetriNetUnfolder]: For 4380/8988 co-relation queries the response was YES. [2022-11-02 20:40:24,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21014 conditions, 12501 events. 2756/12501 cut-off events. For 4380/8988 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 147418 event pairs, 1795 based on Foata normal form. 7/10969 useless extension candidates. Maximal degree in co-relation 20981. Up to 3129 conditions per place. [2022-11-02 20:40:25,045 INFO L137 encePairwiseOnDemand]: 368/379 looper letters, 96 selfloop transitions, 26 changer transitions 10/477 dead transitions. [2022-11-02 20:40:25,046 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 419 places, 477 transitions, 1838 flow [2022-11-02 20:40:25,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-02 20:40:25,047 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-02 20:40:25,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 3046 transitions. [2022-11-02 20:40:25,065 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.8036939313984169 [2022-11-02 20:40:25,065 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 3046 transitions. [2022-11-02 20:40:25,065 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 3046 transitions. [2022-11-02 20:40:25,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:25,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 3046 transitions. [2022-11-02 20:40:25,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 304.6) internal successors, (3046), 10 states have internal predecessors, (3046), 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 20:40:25,088 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 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 20:40:25,090 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 379.0) internal successors, (4169), 11 states have internal predecessors, (4169), 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 20:40:25,090 INFO L175 Difference]: Start difference. First operand has 412 places, 416 transitions, 1358 flow. Second operand 10 states and 3046 transitions. [2022-11-02 20:40:25,091 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 419 places, 477 transitions, 1838 flow [2022-11-02 20:40:25,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 417 places, 477 transitions, 1828 flow, removed 5 selfloop flow, removed 2 redundant places. [2022-11-02 20:40:25,167 INFO L231 Difference]: Finished difference. Result has 420 places, 433 transitions, 1519 flow [2022-11-02 20:40:25,168 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1354, PETRI_DIFFERENCE_MINUEND_PLACES=408, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=416, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=400, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1519, PETRI_PLACES=420, PETRI_TRANSITIONS=433} [2022-11-02 20:40:25,170 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 77 predicate places. [2022-11-02 20:40:25,171 INFO L495 AbstractCegarLoop]: Abstraction has has 420 places, 433 transitions, 1519 flow [2022-11-02 20:40:25,172 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 299.0) internal successors, (2392), 8 states have internal predecessors, (2392), 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 20:40:25,172 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:25,173 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:25,223 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:25,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:25,387 INFO L420 AbstractCegarLoop]: === Iteration 13 === 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 20:40:25,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:25,388 INFO L85 PathProgramCache]: Analyzing trace with hash -732054068, now seen corresponding path program 1 times [2022-11-02 20:40:25,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:25,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762533820] [2022-11-02 20:40:25,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:25,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:25,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:26,046 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-02 20:40:26,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:26,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762533820] [2022-11-02 20:40:26,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762533820] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:26,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1230924992] [2022-11-02 20:40:26,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:26,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:26,048 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:26,049 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:26,076 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-02 20:40:26,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:26,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 844 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-02 20:40:26,360 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:26,703 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-02 20:40:26,704 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 328 backedges. 0 proven. 102 refuted. 0 times theorem prover too weak. 226 trivial. 0 not checked. [2022-11-02 20:40:26,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1230924992] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-02 20:40:26,982 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-02 20:40:26,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 14 [2022-11-02 20:40:26,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966614333] [2022-11-02 20:40:26,984 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-02 20:40:26,985 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-11-02 20:40:26,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:26,986 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-11-02 20:40:26,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=132, Unknown=0, NotChecked=0, Total=182 [2022-11-02 20:40:26,993 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 337 out of 379 [2022-11-02 20:40:27,000 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 420 places, 433 transitions, 1519 flow. Second operand has 14 states, 14 states have (on average 340.35714285714283) internal successors, (4765), 14 states have internal predecessors, (4765), 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 20:40:27,000 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:27,000 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 337 of 379 [2022-11-02 20:40:27,001 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:29,727 INFO L130 PetriNetUnfolder]: 274/5003 cut-off events. [2022-11-02 20:40:29,727 INFO L131 PetriNetUnfolder]: For 1203/2708 co-relation queries the response was YES. [2022-11-02 20:40:29,821 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7492 conditions, 5003 events. 274/5003 cut-off events. For 1203/2708 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 43596 event pairs, 85 based on Foata normal form. 136/4870 useless extension candidates. Maximal degree in co-relation 7457. Up to 169 conditions per place. [2022-11-02 20:40:29,846 INFO L137 encePairwiseOnDemand]: 371/379 looper letters, 86 selfloop transitions, 21 changer transitions 6/516 dead transitions. [2022-11-02 20:40:29,847 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 438 places, 516 transitions, 2032 flow [2022-11-02 20:40:29,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-02 20:40:29,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-02 20:40:29,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 7192 transitions. [2022-11-02 20:40:29,861 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9036311094358588 [2022-11-02 20:40:29,862 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 7192 transitions. [2022-11-02 20:40:29,862 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 7192 transitions. [2022-11-02 20:40:29,865 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:29,866 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 7192 transitions. [2022-11-02 20:40:29,879 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 342.4761904761905) internal successors, (7192), 21 states have internal predecessors, (7192), 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 20:40:29,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 379.0) internal successors, (8338), 22 states have internal predecessors, (8338), 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 20:40:29,898 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 379.0) internal successors, (8338), 22 states have internal predecessors, (8338), 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 20:40:29,899 INFO L175 Difference]: Start difference. First operand has 420 places, 433 transitions, 1519 flow. Second operand 21 states and 7192 transitions. [2022-11-02 20:40:29,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 438 places, 516 transitions, 2032 flow [2022-11-02 20:40:29,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 436 places, 516 transitions, 1996 flow, removed 18 selfloop flow, removed 2 redundant places. [2022-11-02 20:40:29,929 INFO L231 Difference]: Finished difference. Result has 439 places, 443 transitions, 1596 flow [2022-11-02 20:40:29,930 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=416, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=433, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=417, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1596, PETRI_PLACES=439, PETRI_TRANSITIONS=443} [2022-11-02 20:40:29,930 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 96 predicate places. [2022-11-02 20:40:29,931 INFO L495 AbstractCegarLoop]: Abstraction has has 439 places, 443 transitions, 1596 flow [2022-11-02 20:40:29,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 340.35714285714283) internal successors, (4765), 14 states have internal predecessors, (4765), 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 20:40:29,933 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:29,933 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:29,984 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:30,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:30,147 INFO L420 AbstractCegarLoop]: === Iteration 14 === 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 20:40:30,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:30,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1990193066, now seen corresponding path program 2 times [2022-11-02 20:40:30,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:30,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1397773608] [2022-11-02 20:40:30,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:30,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:31,114 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-02 20:40:31,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:31,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1397773608] [2022-11-02 20:40:31,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1397773608] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:31,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [664252615] [2022-11-02 20:40:31,115 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-02 20:40:31,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:31,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:31,117 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:31,130 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-02 20:40:31,608 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-02 20:40:31,608 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:31,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:40:31,620 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:31,769 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-02 20:40:31,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:31,981 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-02 20:40:31,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [664252615] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:31,981 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:31,982 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 8 [2022-11-02 20:40:31,982 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652415890] [2022-11-02 20:40:31,982 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:31,983 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:31,983 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:31,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:31,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:40:31,986 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 379 [2022-11-02 20:40:31,988 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 439 places, 443 transitions, 1596 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 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 20:40:31,988 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:31,989 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 379 [2022-11-02 20:40:31,989 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:41,521 INFO L130 PetriNetUnfolder]: 4086/25696 cut-off events. [2022-11-02 20:40:41,522 INFO L131 PetriNetUnfolder]: For 7547/13750 co-relation queries the response was YES. [2022-11-02 20:40:41,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40362 conditions, 25696 events. 4086/25696 cut-off events. For 7547/13750 co-relation queries the response was YES. Maximal size of possible extension queue 922. Compared 337400 event pairs, 1155 based on Foata normal form. 485/23559 useless extension candidates. Maximal degree in co-relation 40326. Up to 1631 conditions per place. [2022-11-02 20:40:41,974 INFO L137 encePairwiseOnDemand]: 368/379 looper letters, 52 selfloop transitions, 20 changer transitions 0/491 dead transitions. [2022-11-02 20:40:41,974 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 444 places, 491 transitions, 1902 flow [2022-11-02 20:40:41,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:40:41,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:40:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2078 transitions. [2022-11-02 20:40:41,978 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9138082673702727 [2022-11-02 20:40:41,978 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2078 transitions. [2022-11-02 20:40:41,978 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2078 transitions. [2022-11-02 20:40:41,979 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:41,979 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2078 transitions. [2022-11-02 20:40:41,983 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 346.3333333333333) internal successors, (2078), 6 states have internal predecessors, (2078), 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 20:40:41,987 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 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 20:40:41,988 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 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 20:40:41,988 INFO L175 Difference]: Start difference. First operand has 439 places, 443 transitions, 1596 flow. Second operand 6 states and 2078 transitions. [2022-11-02 20:40:41,988 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 444 places, 491 transitions, 1902 flow [2022-11-02 20:40:42,133 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 438 places, 491 transitions, 1878 flow, removed 5 selfloop flow, removed 6 redundant places. [2022-11-02 20:40:42,139 INFO L231 Difference]: Finished difference. Result has 442 places, 459 transitions, 1702 flow [2022-11-02 20:40:42,140 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1572, PETRI_DIFFERENCE_MINUEND_PLACES=433, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=443, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=432, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1702, PETRI_PLACES=442, PETRI_TRANSITIONS=459} [2022-11-02 20:40:42,141 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 99 predicate places. [2022-11-02 20:40:42,141 INFO L495 AbstractCegarLoop]: Abstraction has has 442 places, 459 transitions, 1702 flow [2022-11-02 20:40:42,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 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 20:40:42,142 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:42,143 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:42,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:42,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-02 20:40:42,359 INFO L420 AbstractCegarLoop]: === Iteration 15 === 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 20:40:42,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:42,359 INFO L85 PathProgramCache]: Analyzing trace with hash 1513352610, now seen corresponding path program 3 times [2022-11-02 20:40:42,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:42,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623508846] [2022-11-02 20:40:42,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:42,360 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:42,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:43,134 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-02 20:40:43,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:43,135 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623508846] [2022-11-02 20:40:43,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623508846] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:43,136 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314954886] [2022-11-02 20:40:43,136 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-02 20:40:43,136 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:43,136 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:43,137 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:43,158 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-02 20:40:43,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-02 20:40:43,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-02 20:40:43,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 582 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-02 20:40:43,398 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:43,684 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-02 20:40:43,684 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:43,888 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-02 20:40:43,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314954886] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:43,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:43,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 8 [2022-11-02 20:40:43,891 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921288044] [2022-11-02 20:40:43,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:43,892 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:43,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:43,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:43,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-02 20:40:43,895 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 379 [2022-11-02 20:40:43,897 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 442 places, 459 transitions, 1702 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 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 20:40:43,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:43,898 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 379 [2022-11-02 20:40:43,898 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:40:54,372 INFO L130 PetriNetUnfolder]: 4581/27651 cut-off events. [2022-11-02 20:40:54,372 INFO L131 PetriNetUnfolder]: For 14290/18548 co-relation queries the response was YES. [2022-11-02 20:40:54,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48098 conditions, 27651 events. 4581/27651 cut-off events. For 14290/18548 co-relation queries the response was YES. Maximal size of possible extension queue 961. Compared 363663 event pairs, 1303 based on Foata normal form. 604/25375 useless extension candidates. Maximal degree in co-relation 48057. Up to 2126 conditions per place. [2022-11-02 20:40:54,916 INFO L137 encePairwiseOnDemand]: 371/379 looper letters, 64 selfloop transitions, 25 changer transitions 0/508 dead transitions. [2022-11-02 20:40:54,917 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 508 transitions, 2112 flow [2022-11-02 20:40:54,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-02 20:40:54,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-02 20:40:54,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 2073 transitions. [2022-11-02 20:40:54,922 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9116094986807388 [2022-11-02 20:40:54,922 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 2073 transitions. [2022-11-02 20:40:54,922 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 2073 transitions. [2022-11-02 20:40:54,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:40:54,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 2073 transitions. [2022-11-02 20:40:54,931 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 345.5) internal successors, (2073), 6 states have internal predecessors, (2073), 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 20:40:54,935 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 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 20:40:54,936 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 379.0) internal successors, (2653), 7 states have internal predecessors, (2653), 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 20:40:54,936 INFO L175 Difference]: Start difference. First operand has 442 places, 459 transitions, 1702 flow. Second operand 6 states and 2073 transitions. [2022-11-02 20:40:54,936 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 447 places, 508 transitions, 2112 flow [2022-11-02 20:40:55,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 447 places, 508 transitions, 2112 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-02 20:40:55,225 INFO L231 Difference]: Finished difference. Result has 451 places, 475 transitions, 1913 flow [2022-11-02 20:40:55,225 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1702, PETRI_DIFFERENCE_MINUEND_PLACES=442, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=459, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=441, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1913, PETRI_PLACES=451, PETRI_TRANSITIONS=475} [2022-11-02 20:40:55,226 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 108 predicate places. [2022-11-02 20:40:55,226 INFO L495 AbstractCegarLoop]: Abstraction has has 451 places, 475 transitions, 1913 flow [2022-11-02 20:40:55,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 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 20:40:55,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:40:55,228 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:40:55,269 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-02 20:40:55,454 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:55,455 INFO L420 AbstractCegarLoop]: === Iteration 16 === 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 20:40:55,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:40:55,455 INFO L85 PathProgramCache]: Analyzing trace with hash -1989692380, now seen corresponding path program 1 times [2022-11-02 20:40:55,456 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:40:55,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880771016] [2022-11-02 20:40:55,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:55,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:40:55,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:55,859 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-02 20:40:55,859 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:40:55,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880771016] [2022-11-02 20:40:55,860 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [880771016] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:55,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158144109] [2022-11-02 20:40:55,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:40:55,861 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:40:55,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:40:55,862 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:40:55,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-02 20:40:56,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:40:56,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 951 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:40:56,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:40:56,351 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-02 20:40:56,352 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:40:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 560 trivial. 0 not checked. [2022-11-02 20:40:56,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158144109] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:40:56,515 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:40:56,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 10 [2022-11-02 20:40:56,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638288811] [2022-11-02 20:40:56,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:40:56,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:40:56,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:40:56,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:40:56,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-02 20:40:56,519 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 379 [2022-11-02 20:40:56,521 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 451 places, 475 transitions, 1913 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 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 20:40:56,521 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:40:56,522 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 379 [2022-11-02 20:40:56,522 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-02 20:41:06,925 INFO L130 PetriNetUnfolder]: 4340/26967 cut-off events. [2022-11-02 20:41:06,925 INFO L131 PetriNetUnfolder]: For 21640/28312 co-relation queries the response was YES. [2022-11-02 20:41:07,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 48792 conditions, 26967 events. 4340/26967 cut-off events. For 21640/28312 co-relation queries the response was YES. Maximal size of possible extension queue 946. Compared 354814 event pairs, 572 based on Foata normal form. 636/24785 useless extension candidates. Maximal degree in co-relation 48747. Up to 2320 conditions per place. [2022-11-02 20:41:07,388 INFO L137 encePairwiseOnDemand]: 370/379 looper letters, 63 selfloop transitions, 38 changer transitions 0/520 dead transitions. [2022-11-02 20:41:07,389 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 457 places, 520 transitions, 2384 flow [2022-11-02 20:41:07,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-02 20:41:07,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-02 20:41:07,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 2406 transitions. [2022-11-02 20:41:07,393 INFO L522 CegarLoopForPetriNet]: DFA transition density 0.9068978514888805 [2022-11-02 20:41:07,393 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 2406 transitions. [2022-11-02 20:41:07,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 2406 transitions. [2022-11-02 20:41:07,395 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-02 20:41:07,395 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 2406 transitions. [2022-11-02 20:41:07,399 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 343.7142857142857) internal successors, (2406), 7 states have internal predecessors, (2406), 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 20:41:07,402 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 379.0) internal successors, (3032), 8 states have internal predecessors, (3032), 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 20:41:07,403 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 379.0) internal successors, (3032), 8 states have internal predecessors, (3032), 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 20:41:07,403 INFO L175 Difference]: Start difference. First operand has 451 places, 475 transitions, 1913 flow. Second operand 7 states and 2406 transitions. [2022-11-02 20:41:07,404 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 457 places, 520 transitions, 2384 flow [2022-11-02 20:41:07,660 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 456 places, 520 transitions, 2362 flow, removed 9 selfloop flow, removed 1 redundant places. [2022-11-02 20:41:07,669 INFO L231 Difference]: Finished difference. Result has 461 places, 491 transitions, 2206 flow [2022-11-02 20:41:07,670 INFO L270 CegarLoopForPetriNet]: {PETRI_ALPHABET=379, PETRI_DIFFERENCE_MINUEND_FLOW=1902, PETRI_DIFFERENCE_MINUEND_PLACES=450, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=475, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=446, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2206, PETRI_PLACES=461, PETRI_TRANSITIONS=491} [2022-11-02 20:41:07,671 INFO L287 CegarLoopForPetriNet]: 343 programPoint places, 118 predicate places. [2022-11-02 20:41:07,671 INFO L495 AbstractCegarLoop]: Abstraction has has 461 places, 491 transitions, 2206 flow [2022-11-02 20:41:07,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 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 20:41:07,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2022-11-02 20:41:07,673 INFO L208 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 20:41:07,707 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2022-11-02 20:41:07,886 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-02 20:41:07,887 INFO L420 AbstractCegarLoop]: === Iteration 17 === 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 20:41:07,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-02 20:41:07,888 INFO L85 PathProgramCache]: Analyzing trace with hash -20717594, now seen corresponding path program 1 times [2022-11-02 20:41:07,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-02 20:41:07,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060269781] [2022-11-02 20:41:07,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:07,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-02 20:41:08,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:09,659 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 105 proven. 1 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-11-02 20:41:09,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-02 20:41:09,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060269781] [2022-11-02 20:41:09,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060269781] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:09,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202362950] [2022-11-02 20:41:09,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-02 20:41:09,661 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-02 20:41:09,661 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 [2022-11-02 20:41:09,663 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-02 20:41:09,689 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f602bedf-3999-4e50-865a-c1ea55211f75/bin/uautomizer-Dbtcem3rbc/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-02 20:41:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-02 20:41:10,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 950 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-02 20:41:10,042 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-02 20:41:10,542 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 105 proven. 1 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-11-02 20:41:10,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-02 20:41:11,089 INFO L134 CoverageAnalysis]: Checked inductivity of 561 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 455 trivial. 0 not checked. [2022-11-02 20:41:11,090 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202362950] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-02 20:41:11,090 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-02 20:41:11,090 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6, 5] total 7 [2022-11-02 20:41:11,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004171265] [2022-11-02 20:41:11,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-02 20:41:11,092 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-02 20:41:11,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-02 20:41:11,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-02 20:41:11,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-11-02 20:41:11,095 INFO L477 CegarLoopForPetriNet]: Number of universal loopers: 335 out of 379 [2022-11-02 20:41:11,097 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 461 places, 491 transitions, 2206 flow. Second operand has 5 states, 5 states have (on average 338.2) internal successors, (1691), 5 states have internal predecessors, (1691), 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 20:41:11,097 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-02 20:41:11,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 335 of 379 [2022-11-02 20:41:11,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand