./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a --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 088f6c2624c9ef470b1e5d5938ff0e2c2948b61c2ac98da6e426747245a7aaad --- 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-b5237d8 [2022-11-21 13:41:15,876 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 13:41:15,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 13:41:15,898 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 13:41:15,899 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 13:41:15,900 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 13:41:15,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 13:41:15,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 13:41:15,905 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 13:41:15,906 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 13:41:15,907 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 13:41:15,908 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 13:41:15,908 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 13:41:15,910 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 13:41:15,911 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 13:41:15,912 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 13:41:15,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 13:41:15,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 13:41:15,916 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 13:41:15,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 13:41:15,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 13:41:15,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 13:41:15,926 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 13:41:15,927 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 13:41:15,931 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 13:41:15,931 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 13:41:15,931 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 13:41:15,932 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 13:41:15,933 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 13:41:15,934 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 13:41:15,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 13:41:15,935 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 13:41:15,936 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 13:41:15,937 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 13:41:15,938 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 13:41:15,938 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 13:41:15,948 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 13:41:15,948 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 13:41:15,948 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 13:41:15,952 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 13:41:15,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 13:41:15,953 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 13:41:15,996 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 13:41:15,996 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 13:41:15,996 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 13:41:15,997 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 13:41:15,998 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 13:41:15,998 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 13:41:15,998 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 13:41:15,999 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 13:41:15,999 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 13:41:15,999 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 13:41:16,000 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 13:41:16,000 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 13:41:16,001 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 13:41:16,001 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 13:41:16,001 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 13:41:16,001 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 13:41:16,001 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 13:41:16,002 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 13:41:16,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 13:41:16,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 13:41:16,002 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 13:41:16,002 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 13:41:16,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 13:41:16,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 13:41:16,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:41:16,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 13:41:16,003 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 13:41:16,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 13:41:16,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 13:41:16,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 13:41:16,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 13:41:16,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 13:41:16,005 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 13:41:16,005 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_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 088f6c2624c9ef470b1e5d5938ff0e2c2948b61c2ac98da6e426747245a7aaad [2022-11-21 13:41:16,249 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 13:41:16,270 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 13:41:16,273 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 13:41:16,274 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 13:41:16,274 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 13:41:16,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c [2022-11-21 13:41:19,345 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 13:41:19,672 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 13:41:19,676 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c [2022-11-21 13:41:19,686 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/data/b02288bf1/9fa030b8784a478d9466226f1b4891dd/FLAG06703479d [2022-11-21 13:41:19,709 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/data/b02288bf1/9fa030b8784a478d9466226f1b4891dd [2022-11-21 13:41:19,714 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 13:41:19,716 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 13:41:19,721 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 13:41:19,721 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 13:41:19,725 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 13:41:19,726 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:41:19" (1/1) ... [2022-11-21 13:41:19,727 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32e8223d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:19, skipping insertion in model container [2022-11-21 13:41:19,727 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 01:41:19" (1/1) ... [2022-11-21 13:41:19,735 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 13:41:19,785 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 13:41:20,140 WARN L237 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_384c302c-0bae-424f-b67c-d249cb07f151/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c[19262,19275] [2022-11-21 13:41:20,152 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:41:20,164 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 13:41:20,304 WARN L237 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_384c302c-0bae-424f-b67c-d249cb07f151/sv-benchmarks/c/weaver/chl-poker-hand-subst.wvr.c[19262,19275] [2022-11-21 13:41:20,307 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 13:41:20,333 INFO L208 MainTranslator]: Completed translation [2022-11-21 13:41:20,334 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20 WrapperNode [2022-11-21 13:41:20,334 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 13:41:20,335 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 13:41:20,335 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 13:41:20,335 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 13:41:20,343 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,377 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,471 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2314 [2022-11-21 13:41:20,472 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 13:41:20,472 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 13:41:20,472 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 13:41:20,473 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 13:41:20,482 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,482 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,494 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,494 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,569 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,588 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,619 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,626 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,644 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 13:41:20,652 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 13:41:20,653 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 13:41:20,653 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 13:41:20,654 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (1/1) ... [2022-11-21 13:41:20,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 13:41:20,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:20,691 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 13:41:20,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 13:41:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 13:41:20,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 13:41:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 13:41:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 13:41:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 13:41:20,737 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 13:41:20,737 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 13:41:20,738 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 13:41:20,738 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 13:41:20,739 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 13:41:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 13:41:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 13:41:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 13:41:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 13:41:20,740 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 13:41:20,741 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 13:41:20,741 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 13:41:20,744 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-21 13:41:21,123 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 13:41:21,125 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 13:41:23,304 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 13:41:26,222 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 13:41:26,223 INFO L300 CfgBuilder]: Removed 18 assume(true) statements. [2022-11-21 13:41:26,227 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:41:26 BoogieIcfgContainer [2022-11-21 13:41:26,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 13:41:26,230 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 13:41:26,230 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 13:41:26,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 13:41:26,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 01:41:19" (1/3) ... [2022-11-21 13:41:26,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f492a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:41:26, skipping insertion in model container [2022-11-21 13:41:26,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 01:41:20" (2/3) ... [2022-11-21 13:41:26,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f492a6e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 01:41:26, skipping insertion in model container [2022-11-21 13:41:26,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 01:41:26" (3/3) ... [2022-11-21 13:41:26,238 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-poker-hand-subst.wvr.c [2022-11-21 13:41:26,248 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 13:41:26,259 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 13:41:26,259 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 13:41:26,260 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 13:41:26,704 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 13:41:26,750 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 671 places, 740 transitions, 1504 flow [2022-11-21 13:41:27,179 INFO L130 PetriNetUnfolder]: 79/737 cut-off events. [2022-11-21 13:41:27,179 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 13:41:27,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 750 conditions, 737 events. 79/737 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 763 event pairs, 0 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 662. Up to 7 conditions per place. [2022-11-21 13:41:27,190 INFO L82 GeneralOperation]: Start removeDead. Operand has 671 places, 740 transitions, 1504 flow [2022-11-21 13:41:27,204 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 657 places, 726 transitions, 1470 flow [2022-11-21 13:41:27,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 13:41:27,234 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;@4a23c399, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 13:41:27,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 13:41:27,438 INFO L130 PetriNetUnfolder]: 79/725 cut-off events. [2022-11-21 13:41:27,438 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 13:41:27,439 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:41:27,440 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:41:27,440 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)] === [2022-11-21 13:41:27,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:27,446 INFO L85 PathProgramCache]: Analyzing trace with hash 1409167753, now seen corresponding path program 1 times [2022-11-21 13:41:27,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:27,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887342683] [2022-11-21 13:41:27,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:27,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:27,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:41:28,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:28,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887342683] [2022-11-21 13:41:28,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887342683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:28,062 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:41:28,062 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 13:41:28,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986719933] [2022-11-21 13:41:28,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:28,081 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 13:41:28,081 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:28,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 13:41:28,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 13:41:28,127 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 740 [2022-11-21 13:41:28,131 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 657 places, 726 transitions, 1470 flow. Second operand has 2 states, 2 states have (on average 668.5) internal successors, (1337), 2 states have internal predecessors, (1337), 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) [2022-11-21 13:41:28,132 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:41:28,132 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 740 [2022-11-21 13:41:28,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:41:29,645 INFO L130 PetriNetUnfolder]: 675/1826 cut-off events. [2022-11-21 13:41:29,645 INFO L131 PetriNetUnfolder]: For 84/84 co-relation queries the response was YES. [2022-11-21 13:41:29,652 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2662 conditions, 1826 events. 675/1826 cut-off events. For 84/84 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6950 event pairs, 135 based on Foata normal form. 169/1745 useless extension candidates. Maximal degree in co-relation 1817. Up to 769 conditions per place. [2022-11-21 13:41:29,666 INFO L137 encePairwiseOnDemand]: 697/740 looper letters, 39 selfloop transitions, 0 changer transitions 25/683 dead transitions. [2022-11-21 13:41:29,666 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 658 places, 683 transitions, 1462 flow [2022-11-21 13:41:29,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 13:41:29,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 13:41:29,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1396 transitions. [2022-11-21 13:41:29,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9432432432432433 [2022-11-21 13:41:29,687 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1396 transitions. [2022-11-21 13:41:29,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1396 transitions. [2022-11-21 13:41:29,691 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:41:29,694 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1396 transitions. [2022-11-21 13:41:29,701 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 698.0) internal successors, (1396), 2 states have internal predecessors, (1396), 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) [2022-11-21 13:41:29,712 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 740.0) internal successors, (2220), 3 states have internal predecessors, (2220), 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) [2022-11-21 13:41:29,714 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 740.0) internal successors, (2220), 3 states have internal predecessors, (2220), 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) [2022-11-21 13:41:29,716 INFO L175 Difference]: Start difference. First operand has 657 places, 726 transitions, 1470 flow. Second operand 2 states and 1396 transitions. [2022-11-21 13:41:29,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 658 places, 683 transitions, 1462 flow [2022-11-21 13:41:29,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 652 places, 683 transitions, 1450 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 13:41:29,739 INFO L231 Difference]: Finished difference. Result has 652 places, 658 transitions, 1322 flow [2022-11-21 13:41:29,742 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1372, PETRI_DIFFERENCE_MINUEND_PLACES=651, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=683, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=683, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1322, PETRI_PLACES=652, PETRI_TRANSITIONS=658} [2022-11-21 13:41:29,746 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, -5 predicate places. [2022-11-21 13:41:29,746 INFO L495 AbstractCegarLoop]: Abstraction has has 652 places, 658 transitions, 1322 flow [2022-11-21 13:41:29,747 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 668.5) internal successors, (1337), 2 states have internal predecessors, (1337), 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) [2022-11-21 13:41:29,748 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:41:29,748 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:41:29,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 13:41:29,749 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)] === [2022-11-21 13:41:29,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:29,750 INFO L85 PathProgramCache]: Analyzing trace with hash -102963052, now seen corresponding path program 1 times [2022-11-21 13:41:29,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:29,751 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189357915] [2022-11-21 13:41:29,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:29,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:30,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 13:41:30,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:30,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189357915] [2022-11-21 13:41:30,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189357915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:30,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 13:41:30,626 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-21 13:41:30,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1914678578] [2022-11-21 13:41:30,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:30,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:41:30,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:30,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:41:30,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-21 13:41:30,634 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 513 out of 740 [2022-11-21 13:41:30,639 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 652 places, 658 transitions, 1322 flow. Second operand has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 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) [2022-11-21 13:41:30,639 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:41:30,639 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 513 of 740 [2022-11-21 13:41:30,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:41:32,347 INFO L130 PetriNetUnfolder]: 675/1837 cut-off events. [2022-11-21 13:41:32,347 INFO L131 PetriNetUnfolder]: For 21/21 co-relation queries the response was YES. [2022-11-21 13:41:32,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2797 conditions, 1837 events. 675/1837 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6861 event pairs, 135 based on Foata normal form. 0/1612 useless extension candidates. Maximal degree in co-relation 2794. Up to 833 conditions per place. [2022-11-21 13:41:32,363 INFO L137 encePairwiseOnDemand]: 710/740 looper letters, 183 selfloop transitions, 24 changer transitions 0/682 dead transitions. [2022-11-21 13:41:32,363 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 631 places, 682 transitions, 1784 flow [2022-11-21 13:41:32,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:41:32,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:41:32,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2778 transitions. [2022-11-21 13:41:32,369 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7508108108108108 [2022-11-21 13:41:32,369 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2778 transitions. [2022-11-21 13:41:32,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2778 transitions. [2022-11-21 13:41:32,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:41:32,371 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2778 transitions. [2022-11-21 13:41:32,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 555.6) internal successors, (2778), 5 states have internal predecessors, (2778), 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) [2022-11-21 13:41:32,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 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) [2022-11-21 13:41:32,387 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 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) [2022-11-21 13:41:32,388 INFO L175 Difference]: Start difference. First operand has 652 places, 658 transitions, 1322 flow. Second operand 5 states and 2778 transitions. [2022-11-21 13:41:32,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 631 places, 682 transitions, 1784 flow [2022-11-21 13:41:32,392 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 631 places, 682 transitions, 1784 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 13:41:32,400 INFO L231 Difference]: Finished difference. Result has 632 places, 664 transitions, 1418 flow [2022-11-21 13:41:32,402 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1322, PETRI_DIFFERENCE_MINUEND_PLACES=627, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=658, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=634, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1418, PETRI_PLACES=632, PETRI_TRANSITIONS=664} [2022-11-21 13:41:32,402 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, -25 predicate places. [2022-11-21 13:41:32,403 INFO L495 AbstractCegarLoop]: Abstraction has has 632 places, 664 transitions, 1418 flow [2022-11-21 13:41:32,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 534.0) internal successors, (2670), 5 states have internal predecessors, (2670), 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) [2022-11-21 13:41:32,405 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:41:32,406 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:41:32,406 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 13:41:32,406 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)] === [2022-11-21 13:41:32,407 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:32,407 INFO L85 PathProgramCache]: Analyzing trace with hash 933695922, now seen corresponding path program 1 times [2022-11-21 13:41:32,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:32,407 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830597714] [2022-11-21 13:41:32,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:32,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:32,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:33,113 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-21 13:41:33,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:33,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830597714] [2022-11-21 13:41:33,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830597714] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:33,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [697358163] [2022-11-21 13:41:33,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:33,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:33,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:33,122 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:33,150 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 13:41:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:33,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 1154 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-21 13:41:33,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:34,133 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-21 13:41:34,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:34,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [697358163] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:34,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:34,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-11-21 13:41:34,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1891080876] [2022-11-21 13:41:34,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:34,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:41:34,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:34,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:41:34,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-11-21 13:41:34,140 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 513 out of 740 [2022-11-21 13:41:34,143 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 632 places, 664 transitions, 1418 flow. Second operand has 5 states, 5 states have (on average 538.8) internal successors, (2694), 5 states have internal predecessors, (2694), 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) [2022-11-21 13:41:34,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:41:34,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 513 of 740 [2022-11-21 13:41:34,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:41:35,722 INFO L130 PetriNetUnfolder]: 675/1873 cut-off events. [2022-11-21 13:41:35,723 INFO L131 PetriNetUnfolder]: For 51/51 co-relation queries the response was YES. [2022-11-21 13:41:35,728 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2901 conditions, 1873 events. 675/1873 cut-off events. For 51/51 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6865 event pairs, 135 based on Foata normal form. 0/1654 useless extension candidates. Maximal degree in co-relation 2896. Up to 864 conditions per place. [2022-11-21 13:41:35,740 INFO L137 encePairwiseOnDemand]: 708/740 looper letters, 187 selfloop transitions, 26 changer transitions 0/688 dead transitions. [2022-11-21 13:41:35,741 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 637 places, 688 transitions, 1892 flow [2022-11-21 13:41:35,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 13:41:35,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 13:41:35,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 3291 transitions. [2022-11-21 13:41:35,750 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7412162162162163 [2022-11-21 13:41:35,750 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 3291 transitions. [2022-11-21 13:41:35,750 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 3291 transitions. [2022-11-21 13:41:35,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:41:35,753 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 3291 transitions. [2022-11-21 13:41:35,762 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 548.5) internal successors, (3291), 6 states have internal predecessors, (3291), 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) [2022-11-21 13:41:35,772 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 740.0) internal successors, (5180), 7 states have internal predecessors, (5180), 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) [2022-11-21 13:41:35,775 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 740.0) internal successors, (5180), 7 states have internal predecessors, (5180), 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) [2022-11-21 13:41:35,776 INFO L175 Difference]: Start difference. First operand has 632 places, 664 transitions, 1418 flow. Second operand 6 states and 3291 transitions. [2022-11-21 13:41:35,776 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 637 places, 688 transitions, 1892 flow [2022-11-21 13:41:35,782 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 634 places, 688 transitions, 1856 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 13:41:35,793 INFO L231 Difference]: Finished difference. Result has 635 places, 670 transitions, 1482 flow [2022-11-21 13:41:35,794 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=629, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=664, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=638, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=1482, PETRI_PLACES=635, PETRI_TRANSITIONS=670} [2022-11-21 13:41:35,795 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, -22 predicate places. [2022-11-21 13:41:35,795 INFO L495 AbstractCegarLoop]: Abstraction has has 635 places, 670 transitions, 1482 flow [2022-11-21 13:41:35,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 538.8) internal successors, (2694), 5 states have internal predecessors, (2694), 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) [2022-11-21 13:41:35,797 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:41:35,798 INFO L209 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:41:35,812 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:36,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:36,008 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)] === [2022-11-21 13:41:36,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:36,008 INFO L85 PathProgramCache]: Analyzing trace with hash -684758350, now seen corresponding path program 1 times [2022-11-21 13:41:36,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:36,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1756129290] [2022-11-21 13:41:36,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:36,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:36,730 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:41:36,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:36,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1756129290] [2022-11-21 13:41:36,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1756129290] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:36,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [76335477] [2022-11-21 13:41:36,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:36,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:36,732 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:36,734 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:36,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 13:41:37,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:37,594 INFO L263 TraceCheckSpWp]: Trace formula consists of 1232 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 13:41:37,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:37,751 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:41:37,751 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:41:37,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-21 13:41:37,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [76335477] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:41:37,871 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:41:37,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-21 13:41:37,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1013100767] [2022-11-21 13:41:37,872 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:41:37,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-21 13:41:37,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:37,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-21 13:41:37,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-21 13:41:37,885 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 740 [2022-11-21 13:41:37,896 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 635 places, 670 transitions, 1482 flow. Second operand has 15 states, 15 states have (on average 513.3333333333334) internal successors, (7700), 15 states have internal predecessors, (7700), 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) [2022-11-21 13:41:37,897 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:41:37,897 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 740 [2022-11-21 13:41:37,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:41:40,187 INFO L130 PetriNetUnfolder]: 675/1939 cut-off events. [2022-11-21 13:41:40,187 INFO L131 PetriNetUnfolder]: For 53/53 co-relation queries the response was YES. [2022-11-21 13:41:40,195 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3066 conditions, 1939 events. 675/1939 cut-off events. For 53/53 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 6777 event pairs, 135 based on Foata normal form. 18/1744 useless extension candidates. Maximal degree in co-relation 3060. Up to 815 conditions per place. [2022-11-21 13:41:40,205 INFO L137 encePairwiseOnDemand]: 643/740 looper letters, 182 selfloop transitions, 115 changer transitions 0/760 dead transitions. [2022-11-21 13:41:40,206 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 652 places, 760 transitions, 2268 flow [2022-11-21 13:41:40,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-21 13:41:40,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2022-11-21 13:41:40,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 9333 transitions. [2022-11-21 13:41:40,225 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7006756756756757 [2022-11-21 13:41:40,225 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 9333 transitions. [2022-11-21 13:41:40,225 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 9333 transitions. [2022-11-21 13:41:40,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:41:40,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 9333 transitions. [2022-11-21 13:41:40,252 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 518.5) internal successors, (9333), 18 states have internal predecessors, (9333), 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) [2022-11-21 13:41:40,275 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 740.0) internal successors, (14060), 19 states have internal predecessors, (14060), 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) [2022-11-21 13:41:40,282 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 740.0) internal successors, (14060), 19 states have internal predecessors, (14060), 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) [2022-11-21 13:41:40,283 INFO L175 Difference]: Start difference. First operand has 635 places, 670 transitions, 1482 flow. Second operand 18 states and 9333 transitions. [2022-11-21 13:41:40,283 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 652 places, 760 transitions, 2268 flow [2022-11-21 13:41:40,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 648 places, 760 transitions, 2228 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 13:41:40,297 INFO L231 Difference]: Finished difference. Result has 655 places, 724 transitions, 2031 flow [2022-11-21 13:41:40,299 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1442, PETRI_DIFFERENCE_MINUEND_PLACES=631, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=670, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=573, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2031, PETRI_PLACES=655, PETRI_TRANSITIONS=724} [2022-11-21 13:41:40,299 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, -2 predicate places. [2022-11-21 13:41:40,300 INFO L495 AbstractCegarLoop]: Abstraction has has 655 places, 724 transitions, 2031 flow [2022-11-21 13:41:40,303 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 513.3333333333334) internal successors, (7700), 15 states have internal predecessors, (7700), 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) [2022-11-21 13:41:40,303 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:41:40,304 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:41:40,313 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-11-21 13:41:40,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:40,512 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)] === [2022-11-21 13:41:40,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:40,513 INFO L85 PathProgramCache]: Analyzing trace with hash -722335024, now seen corresponding path program 2 times [2022-11-21 13:41:40,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:40,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1676597302] [2022-11-21 13:41:40,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:40,514 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:40,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:41,703 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-21 13:41:41,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:41,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1676597302] [2022-11-21 13:41:41,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1676597302] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:41,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448230144] [2022-11-21 13:41:41,704 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:41:41,705 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:41,705 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:41,706 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:41,731 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 13:41:42,514 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:41:42,514 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:41:42,519 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 41 conjunts are in the unsatisfiable core [2022-11-21 13:41:42,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:42,835 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 13:41:42,836 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 52 [2022-11-21 13:41:43,249 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-21 13:41:43,249 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:43,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448230144] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:43,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:43,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [11] total 16 [2022-11-21 13:41:43,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1202424641] [2022-11-21 13:41:43,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:43,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:41:43,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:43,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:41:43,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-11-21 13:41:43,257 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 500 out of 740 [2022-11-21 13:41:43,279 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 655 places, 724 transitions, 2031 flow. Second operand has 7 states, 7 states have (on average 520.1428571428571) internal successors, (3641), 7 states have internal predecessors, (3641), 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) [2022-11-21 13:41:43,279 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:41:43,279 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 500 of 740 [2022-11-21 13:41:43,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:41:46,526 INFO L130 PetriNetUnfolder]: 1622/3477 cut-off events. [2022-11-21 13:41:46,526 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-11-21 13:41:46,542 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5861 conditions, 3477 events. 1622/3477 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16435 event pairs, 333 based on Foata normal form. 1/3055 useless extension candidates. Maximal degree in co-relation 5848. Up to 1660 conditions per place. [2022-11-21 13:41:46,562 INFO L137 encePairwiseOnDemand]: 731/740 looper letters, 218 selfloop transitions, 4 changer transitions 11/786 dead transitions. [2022-11-21 13:41:46,562 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 786 transitions, 2630 flow [2022-11-21 13:41:46,563 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:41:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:41:46,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3734 transitions. [2022-11-21 13:41:46,571 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7208494208494208 [2022-11-21 13:41:46,571 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3734 transitions. [2022-11-21 13:41:46,572 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3734 transitions. [2022-11-21 13:41:46,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:41:46,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3734 transitions. [2022-11-21 13:41:46,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 533.4285714285714) internal successors, (3734), 7 states have internal predecessors, (3734), 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) [2022-11-21 13:41:46,591 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 740.0) internal successors, (5920), 8 states have internal predecessors, (5920), 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) [2022-11-21 13:41:46,594 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 740.0) internal successors, (5920), 8 states have internal predecessors, (5920), 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) [2022-11-21 13:41:46,594 INFO L175 Difference]: Start difference. First operand has 655 places, 724 transitions, 2031 flow. Second operand 7 states and 3734 transitions. [2022-11-21 13:41:46,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 786 transitions, 2630 flow [2022-11-21 13:41:46,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 655 places, 786 transitions, 2543 flow, removed 18 selfloop flow, removed 6 redundant places. [2022-11-21 13:41:46,617 INFO L231 Difference]: Finished difference. Result has 660 places, 726 transitions, 1976 flow [2022-11-21 13:41:46,618 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1944, PETRI_DIFFERENCE_MINUEND_PLACES=649, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=724, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1976, PETRI_PLACES=660, PETRI_TRANSITIONS=726} [2022-11-21 13:41:46,622 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, 3 predicate places. [2022-11-21 13:41:46,622 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 726 transitions, 1976 flow [2022-11-21 13:41:46,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 520.1428571428571) internal successors, (3641), 7 states have internal predecessors, (3641), 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) [2022-11-21 13:41:46,623 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:41:46,625 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:41:46,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:46,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:46,834 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)] === [2022-11-21 13:41:46,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:46,835 INFO L85 PathProgramCache]: Analyzing trace with hash -1141339706, now seen corresponding path program 3 times [2022-11-21 13:41:46,835 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:46,835 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [377594081] [2022-11-21 13:41:46,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:46,835 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:46,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:47,960 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-21 13:41:47,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:47,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [377594081] [2022-11-21 13:41:47,961 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [377594081] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:47,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [711015142] [2022-11-21 13:41:47,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:41:47,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:47,962 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:47,967 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:47,986 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 13:41:48,795 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-21 13:41:48,795 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:41:48,800 INFO L263 TraceCheckSpWp]: Trace formula consists of 1076 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-21 13:41:48,825 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:48,881 INFO L321 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2022-11-21 13:41:48,882 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 19 [2022-11-21 13:41:49,096 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 198 trivial. 0 not checked. [2022-11-21 13:41:49,096 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:49,096 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [711015142] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:49,097 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:49,097 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [11] total 14 [2022-11-21 13:41:49,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863216775] [2022-11-21 13:41:49,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:49,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-21 13:41:49,099 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:49,100 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-21 13:41:49,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-11-21 13:41:49,104 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 530 out of 740 [2022-11-21 13:41:49,107 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 726 transitions, 1976 flow. Second operand has 5 states, 5 states have (on average 552.2) internal successors, (2761), 5 states have internal predecessors, (2761), 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) [2022-11-21 13:41:49,107 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:41:49,107 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 530 of 740 [2022-11-21 13:41:49,107 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:41:51,205 INFO L130 PetriNetUnfolder]: 986/2565 cut-off events. [2022-11-21 13:41:51,206 INFO L131 PetriNetUnfolder]: For 438/483 co-relation queries the response was YES. [2022-11-21 13:41:51,214 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4377 conditions, 2565 events. 986/2565 cut-off events. For 438/483 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 11243 event pairs, 176 based on Foata normal form. 3/2335 useless extension candidates. Maximal degree in co-relation 4359. Up to 908 conditions per place. [2022-11-21 13:41:51,223 INFO L137 encePairwiseOnDemand]: 733/740 looper letters, 138 selfloop transitions, 0 changer transitions 35/756 dead transitions. [2022-11-21 13:41:51,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 661 places, 756 transitions, 2401 flow [2022-11-21 13:41:51,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-21 13:41:51,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-21 13:41:51,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 2822 transitions. [2022-11-21 13:41:51,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7627027027027027 [2022-11-21 13:41:51,230 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 2822 transitions. [2022-11-21 13:41:51,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 2822 transitions. [2022-11-21 13:41:51,232 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:41:51,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 2822 transitions. [2022-11-21 13:41:51,237 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 564.4) internal successors, (2822), 5 states have internal predecessors, (2822), 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) [2022-11-21 13:41:51,244 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 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) [2022-11-21 13:41:51,246 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 740.0) internal successors, (4440), 6 states have internal predecessors, (4440), 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) [2022-11-21 13:41:51,246 INFO L175 Difference]: Start difference. First operand has 660 places, 726 transitions, 1976 flow. Second operand 5 states and 2822 transitions. [2022-11-21 13:41:51,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 661 places, 756 transitions, 2401 flow [2022-11-21 13:41:51,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 657 places, 756 transitions, 2387 flow, removed 5 selfloop flow, removed 4 redundant places. [2022-11-21 13:41:51,262 INFO L231 Difference]: Finished difference. Result has 660 places, 721 transitions, 1958 flow [2022-11-21 13:41:51,264 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1968, PETRI_DIFFERENCE_MINUEND_PLACES=653, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=726, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=726, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1958, PETRI_PLACES=660, PETRI_TRANSITIONS=721} [2022-11-21 13:41:51,264 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, 3 predicate places. [2022-11-21 13:41:51,265 INFO L495 AbstractCegarLoop]: Abstraction has has 660 places, 721 transitions, 1958 flow [2022-11-21 13:41:51,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 552.2) internal successors, (2761), 5 states have internal predecessors, (2761), 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) [2022-11-21 13:41:51,266 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:41:51,266 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:41:51,279 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-11-21 13:41:51,474 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:51,475 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)] === [2022-11-21 13:41:51,475 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:51,475 INFO L85 PathProgramCache]: Analyzing trace with hash 722899670, now seen corresponding path program 1 times [2022-11-21 13:41:51,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:51,475 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75732130] [2022-11-21 13:41:51,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:51,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:51,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:52,344 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-21 13:41:52,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:52,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75732130] [2022-11-21 13:41:52,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75732130] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:52,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549211483] [2022-11-21 13:41:52,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:52,350 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:52,350 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:52,355 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:52,382 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 13:41:53,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:53,213 INFO L263 TraceCheckSpWp]: Trace formula consists of 1456 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-21 13:41:53,220 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:53,466 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-21 13:41:53,467 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:41:53,651 INFO L134 CoverageAnalysis]: Checked inductivity of 198 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-11-21 13:41:53,651 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549211483] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:41:53,651 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:41:53,652 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-21 13:41:53,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138369076] [2022-11-21 13:41:53,652 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:41:53,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-21 13:41:53,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:53,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-21 13:41:53,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-21 13:41:53,664 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 740 [2022-11-21 13:41:53,673 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 660 places, 721 transitions, 1958 flow. Second operand has 22 states, 22 states have (on average 510.3636363636364) internal successors, (11228), 22 states have internal predecessors, (11228), 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) [2022-11-21 13:41:53,673 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:41:53,673 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 740 [2022-11-21 13:41:53,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:41:56,564 INFO L130 PetriNetUnfolder]: 672/2224 cut-off events. [2022-11-21 13:41:56,564 INFO L131 PetriNetUnfolder]: For 387/387 co-relation queries the response was YES. [2022-11-21 13:41:56,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3983 conditions, 2224 events. 672/2224 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 81. Compared 8224 event pairs, 171 based on Foata normal form. 24/2035 useless extension candidates. Maximal degree in co-relation 3965. Up to 844 conditions per place. [2022-11-21 13:41:56,581 INFO L137 encePairwiseOnDemand]: 643/740 looper letters, 227 selfloop transitions, 187 changer transitions 0/877 dead transitions. [2022-11-21 13:41:56,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 877 transitions, 3422 flow [2022-11-21 13:41:56,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-11-21 13:41:56,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2022-11-21 13:41:56,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 15467 transitions. [2022-11-21 13:41:56,609 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6967117117117118 [2022-11-21 13:41:56,609 INFO L72 ComplementDD]: Start complementDD. Operand 30 states and 15467 transitions. [2022-11-21 13:41:56,609 INFO L73 IsDeterministic]: Start isDeterministic. Operand 30 states and 15467 transitions. [2022-11-21 13:41:56,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:41:56,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 30 states and 15467 transitions. [2022-11-21 13:41:56,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 31 states, 30 states have (on average 515.5666666666667) internal successors, (15467), 30 states have internal predecessors, (15467), 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) [2022-11-21 13:41:56,672 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 31 states, 31 states have (on average 740.0) internal successors, (22940), 31 states have internal predecessors, (22940), 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) [2022-11-21 13:41:56,681 INFO L81 ComplementDD]: Finished complementDD. Result has 31 states, 31 states have (on average 740.0) internal successors, (22940), 31 states have internal predecessors, (22940), 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) [2022-11-21 13:41:56,681 INFO L175 Difference]: Start difference. First operand has 660 places, 721 transitions, 1958 flow. Second operand 30 states and 15467 transitions. [2022-11-21 13:41:56,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 877 transitions, 3422 flow [2022-11-21 13:41:56,690 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 683 places, 877 transitions, 3416 flow, removed 3 selfloop flow, removed 3 redundant places. [2022-11-21 13:41:56,700 INFO L231 Difference]: Finished difference. Result has 689 places, 805 transitions, 2973 flow [2022-11-21 13:41:56,702 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=1952, PETRI_DIFFERENCE_MINUEND_PLACES=654, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=721, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=127, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=582, PETRI_DIFFERENCE_SUBTRAHEND_STATES=30, PETRI_FLOW=2973, PETRI_PLACES=689, PETRI_TRANSITIONS=805} [2022-11-21 13:41:56,702 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, 32 predicate places. [2022-11-21 13:41:56,703 INFO L495 AbstractCegarLoop]: Abstraction has has 689 places, 805 transitions, 2973 flow [2022-11-21 13:41:56,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 510.3636363636364) internal successors, (11228), 22 states have internal predecessors, (11228), 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) [2022-11-21 13:41:56,706 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:41:56,707 INFO L209 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:41:56,720 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 13:41:56,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-21 13:41:56,916 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)] === [2022-11-21 13:41:56,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:41:56,916 INFO L85 PathProgramCache]: Analyzing trace with hash -691223708, now seen corresponding path program 2 times [2022-11-21 13:41:56,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:41:56,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428023792] [2022-11-21 13:41:56,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:41:56,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:41:57,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:41:58,299 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-21 13:41:58,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:41:58,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428023792] [2022-11-21 13:41:58,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428023792] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:41:58,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484078800] [2022-11-21 13:41:58,300 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 13:41:58,300 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:41:58,300 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:41:58,303 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:41:58,326 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 13:41:59,083 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-11-21 13:41:59,083 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:41:59,088 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 35 conjunts are in the unsatisfiable core [2022-11-21 13:41:59,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:41:59,359 INFO L321 Elim1Store]: treesize reduction 12, result has 67.6 percent of original size [2022-11-21 13:41:59,360 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 50 treesize of output 38 [2022-11-21 13:41:59,568 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-11-21 13:41:59,569 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:41:59,569 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484078800] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:41:59,569 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:41:59,570 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2022-11-21 13:41:59,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043891325] [2022-11-21 13:41:59,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:41:59,571 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 13:41:59,571 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:41:59,572 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 13:41:59,572 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=316, Unknown=0, NotChecked=0, Total=380 [2022-11-21 13:41:59,575 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 502 out of 740 [2022-11-21 13:41:59,578 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 805 transitions, 2973 flow. Second operand has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 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) [2022-11-21 13:41:59,578 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:41:59,578 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 502 of 740 [2022-11-21 13:41:59,579 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:42:02,491 INFO L130 PetriNetUnfolder]: 1528/3691 cut-off events. [2022-11-21 13:42:02,491 INFO L131 PetriNetUnfolder]: For 621/621 co-relation queries the response was YES. [2022-11-21 13:42:02,515 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6748 conditions, 3691 events. 1528/3691 cut-off events. For 621/621 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 18429 event pairs, 333 based on Foata normal form. 1/3264 useless extension candidates. Maximal degree in co-relation 6726. Up to 1514 conditions per place. [2022-11-21 13:42:02,535 INFO L137 encePairwiseOnDemand]: 730/740 looper letters, 211 selfloop transitions, 5 changer transitions 15/870 dead transitions. [2022-11-21 13:42:02,535 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 695 places, 870 transitions, 3582 flow [2022-11-21 13:42:02,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 13:42:02,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 13:42:02,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 3746 transitions. [2022-11-21 13:42:02,542 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7231660231660232 [2022-11-21 13:42:02,543 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 3746 transitions. [2022-11-21 13:42:02,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 3746 transitions. [2022-11-21 13:42:02,544 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:42:02,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 3746 transitions. [2022-11-21 13:42:02,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 535.1428571428571) internal successors, (3746), 7 states have internal predecessors, (3746), 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) [2022-11-21 13:42:02,556 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 740.0) internal successors, (5920), 8 states have internal predecessors, (5920), 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) [2022-11-21 13:42:02,558 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 740.0) internal successors, (5920), 8 states have internal predecessors, (5920), 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) [2022-11-21 13:42:02,558 INFO L175 Difference]: Start difference. First operand has 689 places, 805 transitions, 2973 flow. Second operand 7 states and 3746 transitions. [2022-11-21 13:42:02,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 695 places, 870 transitions, 3582 flow [2022-11-21 13:42:02,569 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 680 places, 870 transitions, 3303 flow, removed 60 selfloop flow, removed 15 redundant places. [2022-11-21 13:42:02,579 INFO L231 Difference]: Finished difference. Result has 685 places, 807 transitions, 2730 flow [2022-11-21 13:42:02,580 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=2694, PETRI_DIFFERENCE_MINUEND_PLACES=674, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=805, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=800, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2730, PETRI_PLACES=685, PETRI_TRANSITIONS=807} [2022-11-21 13:42:02,581 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, 28 predicate places. [2022-11-21 13:42:02,581 INFO L495 AbstractCegarLoop]: Abstraction has has 685 places, 807 transitions, 2730 flow [2022-11-21 13:42:02,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 522.0) internal successors, (3654), 7 states have internal predecessors, (3654), 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) [2022-11-21 13:42:02,583 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:42:02,583 INFO L209 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:02,596 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-21 13:42:02,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:02,792 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)] === [2022-11-21 13:42:02,792 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:02,792 INFO L85 PathProgramCache]: Analyzing trace with hash -627905786, now seen corresponding path program 3 times [2022-11-21 13:42:02,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:02,793 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271374657] [2022-11-21 13:42:02,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:02,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:03,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:04,587 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-21 13:42:04,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:04,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271374657] [2022-11-21 13:42:04,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271374657] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:04,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1984494636] [2022-11-21 13:42:04,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 13:42:04,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:04,589 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:04,595 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:04,614 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 13:42:05,429 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-11-21 13:42:05,429 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:42:05,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 1066 conjuncts, 57 conjunts are in the unsatisfiable core [2022-11-21 13:42:05,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:05,464 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-11-21 13:42:05,556 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 13:42:05,557 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-11-21 13:42:09,589 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 13:42:09,594 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-11-21 13:42:09,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2022-11-21 13:42:09,862 INFO L321 Elim1Store]: treesize reduction 18, result has 51.4 percent of original size [2022-11-21 13:42:09,862 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 36 [2022-11-21 13:42:10,109 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 726 trivial. 0 not checked. [2022-11-21 13:42:10,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-21 13:42:10,110 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1984494636] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 13:42:10,110 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-21 13:42:10,111 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [15] total 32 [2022-11-21 13:42:10,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562224323] [2022-11-21 13:42:10,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 13:42:10,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-11-21 13:42:10,113 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:10,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-11-21 13:42:10,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=902, Unknown=0, NotChecked=0, Total=992 [2022-11-21 13:42:10,121 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 404 out of 740 [2022-11-21 13:42:10,127 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 685 places, 807 transitions, 2730 flow. Second operand has 19 states, 19 states have (on average 416.3157894736842) internal successors, (7910), 19 states have internal predecessors, (7910), 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) [2022-11-21 13:42:10,128 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:42:10,128 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 404 of 740 [2022-11-21 13:42:10,128 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:42:16,431 INFO L130 PetriNetUnfolder]: 2671/5748 cut-off events. [2022-11-21 13:42:16,431 INFO L131 PetriNetUnfolder]: For 2203/2203 co-relation queries the response was YES. [2022-11-21 13:42:16,474 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10899 conditions, 5748 events. 2671/5748 cut-off events. For 2203/2203 co-relation queries the response was YES. Maximal size of possible extension queue 297. Compared 34501 event pairs, 450 based on Foata normal form. 1/5043 useless extension candidates. Maximal degree in co-relation 10874. Up to 1502 conditions per place. [2022-11-21 13:42:16,504 INFO L137 encePairwiseOnDemand]: 652/740 looper letters, 241 selfloop transitions, 87 changer transitions 14/887 dead transitions. [2022-11-21 13:42:16,504 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 709 places, 887 transitions, 3630 flow [2022-11-21 13:42:16,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2022-11-21 13:42:16,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2022-11-21 13:42:16,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 11652 transitions. [2022-11-21 13:42:16,526 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.5623552123552124 [2022-11-21 13:42:16,526 INFO L72 ComplementDD]: Start complementDD. Operand 28 states and 11652 transitions. [2022-11-21 13:42:16,526 INFO L73 IsDeterministic]: Start isDeterministic. Operand 28 states and 11652 transitions. [2022-11-21 13:42:16,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:42:16,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 28 states and 11652 transitions. [2022-11-21 13:42:16,546 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 29 states, 28 states have (on average 416.14285714285717) internal successors, (11652), 28 states have internal predecessors, (11652), 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) [2022-11-21 13:42:16,564 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 29 states, 29 states have (on average 740.0) internal successors, (21460), 29 states have internal predecessors, (21460), 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) [2022-11-21 13:42:16,569 INFO L81 ComplementDD]: Finished complementDD. Result has 29 states, 29 states have (on average 740.0) internal successors, (21460), 29 states have internal predecessors, (21460), 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) [2022-11-21 13:42:16,569 INFO L175 Difference]: Start difference. First operand has 685 places, 807 transitions, 2730 flow. Second operand 28 states and 11652 transitions. [2022-11-21 13:42:16,569 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 709 places, 887 transitions, 3630 flow [2022-11-21 13:42:16,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 703 places, 887 transitions, 3586 flow, removed 15 selfloop flow, removed 6 redundant places. [2022-11-21 13:42:16,597 INFO L231 Difference]: Finished difference. Result has 708 places, 811 transitions, 2929 flow [2022-11-21 13:42:16,598 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=2714, PETRI_DIFFERENCE_MINUEND_PLACES=676, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=807, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=720, PETRI_DIFFERENCE_SUBTRAHEND_STATES=28, PETRI_FLOW=2929, PETRI_PLACES=708, PETRI_TRANSITIONS=811} [2022-11-21 13:42:16,599 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, 51 predicate places. [2022-11-21 13:42:16,599 INFO L495 AbstractCegarLoop]: Abstraction has has 708 places, 811 transitions, 2929 flow [2022-11-21 13:42:16,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 416.3157894736842) internal successors, (7910), 19 states have internal predecessors, (7910), 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) [2022-11-21 13:42:16,601 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:42:16,602 INFO L209 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, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:16,615 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 13:42:16,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:16,811 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)] === [2022-11-21 13:42:16,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:16,812 INFO L85 PathProgramCache]: Analyzing trace with hash 23192614, now seen corresponding path program 4 times [2022-11-21 13:42:16,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:16,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732908428] [2022-11-21 13:42:16,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:16,813 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:16,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:18,191 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-21 13:42:18,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:18,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732908428] [2022-11-21 13:42:18,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732908428] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:18,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043906871] [2022-11-21 13:42:18,192 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 13:42:18,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:18,193 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:18,203 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:18,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 13:42:41,379 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 13:42:41,379 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 13:42:41,393 INFO L263 TraceCheckSpWp]: Trace formula consists of 1768 conjuncts, 14 conjunts are in the unsatisfiable core [2022-11-21 13:42:41,402 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 13:42:41,725 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-21 13:42:41,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 13:42:42,042 INFO L134 CoverageAnalysis]: Checked inductivity of 726 backedges. 0 proven. 75 refuted. 0 times theorem prover too weak. 651 trivial. 0 not checked. [2022-11-21 13:42:42,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043906871] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 13:42:42,043 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 13:42:42,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 15, 15] total 39 [2022-11-21 13:42:42,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771632675] [2022-11-21 13:42:42,043 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 13:42:42,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-11-21 13:42:42,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 13:42:42,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-11-21 13:42:42,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=345, Invalid=1137, Unknown=0, NotChecked=0, Total=1482 [2022-11-21 13:42:42,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 501 out of 740 [2022-11-21 13:42:42,134 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 708 places, 811 transitions, 2929 flow. Second operand has 39 states, 39 states have (on average 507.3076923076923) internal successors, (19785), 39 states have internal predecessors, (19785), 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) [2022-11-21 13:42:42,143 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 13:42:42,144 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 501 of 740 [2022-11-21 13:42:42,144 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 13:42:46,365 INFO L130 PetriNetUnfolder]: 1264/3827 cut-off events. [2022-11-21 13:42:46,366 INFO L131 PetriNetUnfolder]: For 2084/2138 co-relation queries the response was YES. [2022-11-21 13:42:46,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7374 conditions, 3827 events. 1264/3827 cut-off events. For 2084/2138 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 21155 event pairs, 282 based on Foata normal form. 18/3393 useless extension candidates. Maximal degree in co-relation 7348. Up to 1692 conditions per place. [2022-11-21 13:42:46,398 INFO L137 encePairwiseOnDemand]: 696/740 looper letters, 284 selfloop transitions, 173 changer transitions 0/922 dead transitions. [2022-11-21 13:42:46,398 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 741 places, 922 transitions, 4491 flow [2022-11-21 13:42:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-11-21 13:42:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2022-11-21 13:42:46,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 18899 transitions. [2022-11-21 13:42:46,419 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6902483564645727 [2022-11-21 13:42:46,419 INFO L72 ComplementDD]: Start complementDD. Operand 37 states and 18899 transitions. [2022-11-21 13:42:46,419 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 18899 transitions. [2022-11-21 13:42:46,425 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 13:42:46,425 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 37 states and 18899 transitions. [2022-11-21 13:42:46,448 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 38 states, 37 states have (on average 510.7837837837838) internal successors, (18899), 37 states have internal predecessors, (18899), 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) [2022-11-21 13:42:46,469 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 38 states, 38 states have (on average 740.0) internal successors, (28120), 38 states have internal predecessors, (28120), 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) [2022-11-21 13:42:46,473 INFO L81 ComplementDD]: Finished complementDD. Result has 38 states, 38 states have (on average 740.0) internal successors, (28120), 38 states have internal predecessors, (28120), 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) [2022-11-21 13:42:46,474 INFO L175 Difference]: Start difference. First operand has 708 places, 811 transitions, 2929 flow. Second operand 37 states and 18899 transitions. [2022-11-21 13:42:46,474 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 741 places, 922 transitions, 4491 flow [2022-11-21 13:42:46,487 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 922 transitions, 4320 flow, removed 5 selfloop flow, removed 25 redundant places. [2022-11-21 13:42:46,498 INFO L231 Difference]: Finished difference. Result has 723 places, 868 transitions, 3602 flow [2022-11-21 13:42:46,500 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=740, PETRI_DIFFERENCE_MINUEND_FLOW=2758, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=811, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=122, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=686, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=3602, PETRI_PLACES=723, PETRI_TRANSITIONS=868} [2022-11-21 13:42:46,500 INFO L288 CegarLoopForPetriNet]: 657 programPoint places, 66 predicate places. [2022-11-21 13:42:46,500 INFO L495 AbstractCegarLoop]: Abstraction has has 723 places, 868 transitions, 3602 flow [2022-11-21 13:42:46,503 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 507.3076923076923) internal successors, (19785), 39 states have internal predecessors, (19785), 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) [2022-11-21 13:42:46,503 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 13:42:46,504 INFO L209 CegarLoopForPetriNet]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-21 13:42:46,522 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-21 13:42:46,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 13:42:46,722 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)] === [2022-11-21 13:42:46,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 13:42:46,723 INFO L85 PathProgramCache]: Analyzing trace with hash -1371177692, now seen corresponding path program 5 times [2022-11-21 13:42:46,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 13:42:46,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49582883] [2022-11-21 13:42:46,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 13:42:46,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 13:42:46,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 13:42:49,453 INFO L134 CoverageAnalysis]: Checked inductivity of 1689 backedges. 0 proven. 396 refuted. 0 times theorem prover too weak. 1293 trivial. 0 not checked. [2022-11-21 13:42:49,453 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 13:42:49,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49582883] [2022-11-21 13:42:49,454 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49582883] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 13:42:49,454 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1021575629] [2022-11-21 13:42:49,454 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 13:42:49,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 13:42:49,455 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 13:42:49,456 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 13:42:49,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_384c302c-0bae-424f-b67c-d249cb07f151/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process