./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/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_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/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_0cabee16-9775-4942-8e7c-f6e349cf6571/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 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 --- 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 16:17:14,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-21 16:17:14,977 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-21 16:17:15,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-21 16:17:15,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-21 16:17:15,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-21 16:17:15,005 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-21 16:17:15,007 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-21 16:17:15,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-21 16:17:15,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-21 16:17:15,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-21 16:17:15,012 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-21 16:17:15,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-21 16:17:15,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-21 16:17:15,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-21 16:17:15,016 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-21 16:17:15,017 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-21 16:17:15,018 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-21 16:17:15,019 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-21 16:17:15,021 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-21 16:17:15,022 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-21 16:17:15,024 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-21 16:17:15,025 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-21 16:17:15,026 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-21 16:17:15,029 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-21 16:17:15,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-21 16:17:15,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-21 16:17:15,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-21 16:17:15,031 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-21 16:17:15,032 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-21 16:17:15,032 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-21 16:17:15,033 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-21 16:17:15,034 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-21 16:17:15,035 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-21 16:17:15,036 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-21 16:17:15,036 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-21 16:17:15,037 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-21 16:17:15,037 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-21 16:17:15,037 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-21 16:17:15,038 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-21 16:17:15,039 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-21 16:17:15,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-21 16:17:15,079 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-21 16:17:15,080 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-21 16:17:15,080 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-21 16:17:15,080 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-21 16:17:15,081 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-21 16:17:15,081 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-21 16:17:15,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-21 16:17:15,085 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-21 16:17:15,086 INFO L138 SettingsManager]: * Use SBE=true [2022-11-21 16:17:15,086 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-21 16:17:15,087 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-21 16:17:15,088 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-21 16:17:15,088 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-21 16:17:15,088 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-21 16:17:15,088 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-21 16:17:15,088 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-21 16:17:15,089 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-21 16:17:15,089 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-21 16:17:15,089 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-21 16:17:15,089 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-21 16:17:15,089 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-21 16:17:15,090 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-21 16:17:15,090 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-21 16:17:15,090 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-21 16:17:15,090 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:17:15,091 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-21 16:17:15,091 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-21 16:17:15,091 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-21 16:17:15,091 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-21 16:17:15,092 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-21 16:17:15,092 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-21 16:17:15,092 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-21 16:17:15,092 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-21 16:17:15,092 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_0cabee16-9775-4942-8e7c-f6e349cf6571/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 3a95f2ef87fd1cf5c8213f05c50508f1a1765fc5482d62813e9c15181aaf2ab6 [2022-11-21 16:17:15,449 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-21 16:17:15,473 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-21 16:17:15,476 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-21 16:17:15,477 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-21 16:17:15,478 INFO L275 PluginConnector]: CDTParser initialized [2022-11-21 16:17:15,479 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/../../sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-21 16:17:18,548 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-21 16:17:18,792 INFO L351 CDTParser]: Found 1 translation units. [2022-11-21 16:17:18,792 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c [2022-11-21 16:17:18,802 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/data/47e6ca4de/36cc25fa721c4f0da514b1a4083516bb/FLAGa79b6dd8a [2022-11-21 16:17:18,825 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/data/47e6ca4de/36cc25fa721c4f0da514b1a4083516bb [2022-11-21 16:17:18,832 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-21 16:17:18,835 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-21 16:17:18,842 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-21 16:17:18,842 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-21 16:17:18,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-21 16:17:18,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:17:18" (1/1) ... [2022-11-21 16:17:18,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29c1fc12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:18, skipping insertion in model container [2022-11-21 16:17:18,849 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 04:17:18" (1/1) ... [2022-11-21 16:17:18,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-21 16:17:18,893 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-21 16:17:19,192 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_0cabee16-9775-4942-8e7c-f6e349cf6571/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-21 16:17:19,222 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:17:19,238 INFO L203 MainTranslator]: Completed pre-run [2022-11-21 16:17:19,286 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_0cabee16-9775-4942-8e7c-f6e349cf6571/sv-benchmarks/c/weaver/popl20-more-array-sum-alt.wvr.c[2761,2774] [2022-11-21 16:17:19,294 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-21 16:17:19,318 INFO L208 MainTranslator]: Completed translation [2022-11-21 16:17:19,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19 WrapperNode [2022-11-21 16:17:19,320 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-21 16:17:19,321 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-21 16:17:19,321 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-21 16:17:19,322 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-21 16:17:19,330 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,351 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,401 INFO L138 Inliner]: procedures = 25, calls = 51, calls flagged for inlining = 12, calls inlined = 16, statements flattened = 200 [2022-11-21 16:17:19,402 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-21 16:17:19,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-21 16:17:19,403 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-21 16:17:19,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-21 16:17:19,413 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,414 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,429 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,435 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,441 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,458 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,460 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,462 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,469 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-21 16:17:19,470 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-21 16:17:19,470 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-21 16:17:19,470 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-21 16:17:19,471 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (1/1) ... [2022-11-21 16:17:19,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-21 16:17:19,502 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:19,518 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-21 16:17:19,540 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-21 16:17:19,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-21 16:17:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-21 16:17:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-21 16:17:19,572 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-21 16:17:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-21 16:17:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-21 16:17:19,573 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-21 16:17:19,573 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-21 16:17:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-21 16:17:19,574 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-21 16:17:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-21 16:17:19,574 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-21 16:17:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-21 16:17:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-21 16:17:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-21 16:17:19,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-21 16:17:19,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-21 16:17:19,577 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 16:17:19,731 INFO L235 CfgBuilder]: Building ICFG [2022-11-21 16:17:19,734 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-21 16:17:20,302 INFO L276 CfgBuilder]: Performing block encoding [2022-11-21 16:17:20,507 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-21 16:17:20,507 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-21 16:17:20,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:17:20 BoogieIcfgContainer [2022-11-21 16:17:20,510 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-21 16:17:20,513 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-21 16:17:20,514 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-21 16:17:20,518 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-21 16:17:20,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 04:17:18" (1/3) ... [2022-11-21 16:17:20,520 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0747de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:17:20, skipping insertion in model container [2022-11-21 16:17:20,520 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 04:17:19" (2/3) ... [2022-11-21 16:17:20,523 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f0747de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 04:17:20, skipping insertion in model container [2022-11-21 16:17:20,523 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 04:17:20" (3/3) ... [2022-11-21 16:17:20,527 INFO L112 eAbstractionObserver]: Analyzing ICFG popl20-more-array-sum-alt.wvr.c [2022-11-21 16:17:20,538 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-21 16:17:20,551 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-21 16:17:20,551 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-21 16:17:20,551 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-21 16:17:20,669 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-21 16:17:20,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 154 places, 156 transitions, 336 flow [2022-11-21 16:17:20,856 INFO L130 PetriNetUnfolder]: 12/153 cut-off events. [2022-11-21 16:17:20,858 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:17:20,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 153 events. 12/153 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 95 event pairs, 0 based on Foata normal form. 0/140 useless extension candidates. Maximal degree in co-relation 114. Up to 2 conditions per place. [2022-11-21 16:17:20,867 INFO L82 GeneralOperation]: Start removeDead. Operand has 154 places, 156 transitions, 336 flow [2022-11-21 16:17:20,878 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 140 places, 142 transitions, 302 flow [2022-11-21 16:17:20,900 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-21 16:17:20,910 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;@66373fa9, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-21 16:17:20,912 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-21 16:17:20,987 INFO L130 PetriNetUnfolder]: 12/141 cut-off events. [2022-11-21 16:17:20,990 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-21 16:17:20,990 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:20,991 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] [2022-11-21 16:17:20,993 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 16:17:20,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:21,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1594891268, now seen corresponding path program 1 times [2022-11-21 16:17:21,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:21,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1987215376] [2022-11-21 16:17:21,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:21,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:21,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:21,350 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 16:17:21,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:21,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1987215376] [2022-11-21 16:17:21,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1987215376] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:21,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:21,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-21 16:17:21,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [538785601] [2022-11-21 16:17:21,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:21,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-21 16:17:21,367 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:21,410 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-21 16:17:21,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-21 16:17:21,417 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 138 out of 156 [2022-11-21 16:17:21,424 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 142 transitions, 302 flow. Second operand has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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 16:17:21,424 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:21,424 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 138 of 156 [2022-11-21 16:17:21,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:21,653 INFO L130 PetriNetUnfolder]: 41/279 cut-off events. [2022-11-21 16:17:21,663 INFO L131 PetriNetUnfolder]: For 50/51 co-relation queries the response was YES. [2022-11-21 16:17:21,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 370 conditions, 279 events. 41/279 cut-off events. For 50/51 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 811 event pairs, 15 based on Foata normal form. 39/288 useless extension candidates. Maximal degree in co-relation 229. Up to 59 conditions per place. [2022-11-21 16:17:21,669 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 9 selfloop transitions, 0 changer transitions 4/134 dead transitions. [2022-11-21 16:17:21,670 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 141 places, 134 transitions, 304 flow [2022-11-21 16:17:21,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-21 16:17:21,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-21 16:17:21,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 293 transitions. [2022-11-21 16:17:21,686 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9391025641025641 [2022-11-21 16:17:21,687 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 293 transitions. [2022-11-21 16:17:21,688 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 293 transitions. [2022-11-21 16:17:21,690 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:21,693 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 293 transitions. [2022-11-21 16:17:21,697 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 146.5) internal successors, (293), 2 states have internal predecessors, (293), 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 16:17:21,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 16:17:21,703 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 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 16:17:21,705 INFO L175 Difference]: Start difference. First operand has 140 places, 142 transitions, 302 flow. Second operand 2 states and 293 transitions. [2022-11-21 16:17:21,707 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 141 places, 134 transitions, 304 flow [2022-11-21 16:17:21,710 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 134 transitions, 292 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-21 16:17:21,714 INFO L231 Difference]: Finished difference. Result has 135 places, 130 transitions, 266 flow [2022-11-21 16:17:21,717 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=134, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=266, PETRI_PLACES=135, PETRI_TRANSITIONS=130} [2022-11-21 16:17:21,721 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, -5 predicate places. [2022-11-21 16:17:21,721 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 130 transitions, 266 flow [2022-11-21 16:17:21,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 143.0) internal successors, (286), 2 states have internal predecessors, (286), 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 16:17:21,722 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:21,722 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] [2022-11-21 16:17:21,723 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-21 16:17:21,723 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 16:17:21,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:21,724 INFO L85 PathProgramCache]: Analyzing trace with hash 1674272564, now seen corresponding path program 1 times [2022-11-21 16:17:21,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:21,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654883663] [2022-11-21 16:17:21,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:21,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:21,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:22,371 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 16:17:22,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:22,374 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654883663] [2022-11-21 16:17:22,374 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654883663] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:22,375 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:22,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-21 16:17:22,377 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279793121] [2022-11-21 16:17:22,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:22,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-21 16:17:22,379 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:22,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-21 16:17:22,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-21 16:17:22,383 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 113 out of 156 [2022-11-21 16:17:22,384 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 130 transitions, 266 flow. Second operand has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 16:17:22,384 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:22,385 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 113 of 156 [2022-11-21 16:17:22,385 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:22,696 INFO L130 PetriNetUnfolder]: 175/636 cut-off events. [2022-11-21 16:17:22,697 INFO L131 PetriNetUnfolder]: For 39/40 co-relation queries the response was YES. [2022-11-21 16:17:22,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 941 conditions, 636 events. 175/636 cut-off events. For 39/40 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 3269 event pairs, 63 based on Foata normal form. 1/589 useless extension candidates. Maximal degree in co-relation 938. Up to 132 conditions per place. [2022-11-21 16:17:22,703 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 48 selfloop transitions, 6 changer transitions 4/158 dead transitions. [2022-11-21 16:17:22,704 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 158 transitions, 447 flow [2022-11-21 16:17:22,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-21 16:17:22,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2022-11-21 16:17:22,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 737 transitions. [2022-11-21 16:17:22,711 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7873931623931624 [2022-11-21 16:17:22,711 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 737 transitions. [2022-11-21 16:17:22,712 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 737 transitions. [2022-11-21 16:17:22,712 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:22,713 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 737 transitions. [2022-11-21 16:17:22,716 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 122.83333333333333) internal successors, (737), 6 states have internal predecessors, (737), 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 16:17:22,721 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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 16:17:22,722 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 156.0) internal successors, (1092), 7 states have internal predecessors, (1092), 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 16:17:22,722 INFO L175 Difference]: Start difference. First operand has 135 places, 130 transitions, 266 flow. Second operand 6 states and 737 transitions. [2022-11-21 16:17:22,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 158 transitions, 447 flow [2022-11-21 16:17:22,726 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 158 transitions, 447 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-21 16:17:22,729 INFO L231 Difference]: Finished difference. Result has 139 places, 134 transitions, 302 flow [2022-11-21 16:17:22,730 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=266, PETRI_DIFFERENCE_MINUEND_PLACES=131, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=130, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=302, PETRI_PLACES=139, PETRI_TRANSITIONS=134} [2022-11-21 16:17:22,731 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, -1 predicate places. [2022-11-21 16:17:22,731 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 134 transitions, 302 flow [2022-11-21 16:17:22,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 117.0) internal successors, (702), 6 states have internal predecessors, (702), 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 16:17:22,732 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:22,733 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] [2022-11-21 16:17:22,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-21 16:17:22,733 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 16:17:22,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:22,734 INFO L85 PathProgramCache]: Analyzing trace with hash -165018942, now seen corresponding path program 1 times [2022-11-21 16:17:22,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:22,735 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [346176427] [2022-11-21 16:17:22,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:22,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:22,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:23,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:23,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:23,175 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [346176427] [2022-11-21 16:17:23,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [346176427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:23,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:23,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-21 16:17:23,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685513682] [2022-11-21 16:17:23,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:23,178 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:17:23,179 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:23,179 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:17:23,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-21 16:17:23,182 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 156 [2022-11-21 16:17:23,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 134 transitions, 302 flow. Second operand has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 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 16:17:23,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:23,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 156 [2022-11-21 16:17:23,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:23,801 INFO L130 PetriNetUnfolder]: 603/1708 cut-off events. [2022-11-21 16:17:23,801 INFO L131 PetriNetUnfolder]: For 77/83 co-relation queries the response was YES. [2022-11-21 16:17:23,811 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2863 conditions, 1708 events. 603/1708 cut-off events. For 77/83 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 11694 event pairs, 312 based on Foata normal form. 0/1472 useless extension candidates. Maximal degree in co-relation 2856. Up to 606 conditions per place. [2022-11-21 16:17:23,825 INFO L137 encePairwiseOnDemand]: 147/156 looper letters, 47 selfloop transitions, 8 changer transitions 0/158 dead transitions. [2022-11-21 16:17:23,826 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 144 places, 158 transitions, 468 flow [2022-11-21 16:17:23,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-21 16:17:23,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-21 16:17:23,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 984 transitions. [2022-11-21 16:17:23,832 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7884615384615384 [2022-11-21 16:17:23,832 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 984 transitions. [2022-11-21 16:17:23,832 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 984 transitions. [2022-11-21 16:17:23,833 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:23,834 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 984 transitions. [2022-11-21 16:17:23,837 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 123.0) internal successors, (984), 8 states have internal predecessors, (984), 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 16:17:23,840 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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 16:17:23,841 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 156.0) internal successors, (1404), 9 states have internal predecessors, (1404), 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 16:17:23,842 INFO L175 Difference]: Start difference. First operand has 139 places, 134 transitions, 302 flow. Second operand 8 states and 984 transitions. [2022-11-21 16:17:23,842 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 144 places, 158 transitions, 468 flow [2022-11-21 16:17:23,846 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 158 transitions, 464 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-21 16:17:23,853 INFO L231 Difference]: Finished difference. Result has 145 places, 137 transitions, 334 flow [2022-11-21 16:17:23,853 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=298, PETRI_DIFFERENCE_MINUEND_PLACES=135, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=334, PETRI_PLACES=145, PETRI_TRANSITIONS=137} [2022-11-21 16:17:23,855 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 5 predicate places. [2022-11-21 16:17:23,856 INFO L495 AbstractCegarLoop]: Abstraction has has 145 places, 137 transitions, 334 flow [2022-11-21 16:17:23,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.42857142857143) internal successors, (836), 7 states have internal predecessors, (836), 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 16:17:23,857 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:23,857 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] [2022-11-21 16:17:23,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-21 16:17:23,858 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 16:17:23,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:23,859 INFO L85 PathProgramCache]: Analyzing trace with hash -1499400858, now seen corresponding path program 1 times [2022-11-21 16:17:23,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:23,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813729115] [2022-11-21 16:17:23,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:23,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:23,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:24,477 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:24,478 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:24,478 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813729115] [2022-11-21 16:17:24,478 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1813729115] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:24,478 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:24,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:17:24,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284899593] [2022-11-21 16:17:24,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:24,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:17:24,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:24,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:17:24,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:17:24,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 156 [2022-11-21 16:17:24,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 145 places, 137 transitions, 334 flow. Second operand has 10 states, 10 states have (on average 98.1) internal successors, (981), 10 states have internal predecessors, (981), 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 16:17:24,488 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:24,488 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 156 [2022-11-21 16:17:24,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:25,590 INFO L130 PetriNetUnfolder]: 1151/2547 cut-off events. [2022-11-21 16:17:25,591 INFO L131 PetriNetUnfolder]: For 295/322 co-relation queries the response was YES. [2022-11-21 16:17:25,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4729 conditions, 2547 events. 1151/2547 cut-off events. For 295/322 co-relation queries the response was YES. Maximal size of possible extension queue 187. Compared 18586 event pairs, 890 based on Foata normal form. 27/2259 useless extension candidates. Maximal degree in co-relation 4720. Up to 1488 conditions per place. [2022-11-21 16:17:25,667 INFO L137 encePairwiseOnDemand]: 144/156 looper letters, 71 selfloop transitions, 11 changer transitions 0/168 dead transitions. [2022-11-21 16:17:25,668 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 155 places, 168 transitions, 570 flow [2022-11-21 16:17:25,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:17:25,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:17:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1117 transitions. [2022-11-21 16:17:25,671 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6509324009324009 [2022-11-21 16:17:25,672 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1117 transitions. [2022-11-21 16:17:25,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1117 transitions. [2022-11-21 16:17:25,676 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:25,677 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1117 transitions. [2022-11-21 16:17:25,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 101.54545454545455) internal successors, (1117), 11 states have internal predecessors, (1117), 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 16:17:25,684 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 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 16:17:25,687 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 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 16:17:25,688 INFO L175 Difference]: Start difference. First operand has 145 places, 137 transitions, 334 flow. Second operand 11 states and 1117 transitions. [2022-11-21 16:17:25,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 155 places, 168 transitions, 570 flow [2022-11-21 16:17:25,691 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 168 transitions, 560 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-21 16:17:25,695 INFO L231 Difference]: Finished difference. Result has 156 places, 141 transitions, 373 flow [2022-11-21 16:17:25,701 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=324, PETRI_DIFFERENCE_MINUEND_PLACES=141, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=373, PETRI_PLACES=156, PETRI_TRANSITIONS=141} [2022-11-21 16:17:25,703 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 16 predicate places. [2022-11-21 16:17:25,703 INFO L495 AbstractCegarLoop]: Abstraction has has 156 places, 141 transitions, 373 flow [2022-11-21 16:17:25,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 98.1) internal successors, (981), 10 states have internal predecessors, (981), 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 16:17:25,704 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:25,704 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] [2022-11-21 16:17:25,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-21 16:17:25,705 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 16:17:25,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:25,705 INFO L85 PathProgramCache]: Analyzing trace with hash -198156446, now seen corresponding path program 1 times [2022-11-21 16:17:25,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:25,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701537298] [2022-11-21 16:17:25,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:25,707 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:25,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:26,191 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:26,192 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:26,192 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701537298] [2022-11-21 16:17:26,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701537298] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-21 16:17:26,193 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-21 16:17:26,193 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-21 16:17:26,193 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919598136] [2022-11-21 16:17:26,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:26,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-21 16:17:26,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:26,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-21 16:17:26,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2022-11-21 16:17:26,196 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 95 out of 156 [2022-11-21 16:17:26,198 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 141 transitions, 373 flow. Second operand has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 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 16:17:26,198 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:26,198 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 95 of 156 [2022-11-21 16:17:26,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:27,213 INFO L130 PetriNetUnfolder]: 957/2002 cut-off events. [2022-11-21 16:17:27,213 INFO L131 PetriNetUnfolder]: For 426/444 co-relation queries the response was YES. [2022-11-21 16:17:27,221 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3964 conditions, 2002 events. 957/2002 cut-off events. For 426/444 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 13055 event pairs, 551 based on Foata normal form. 18/1826 useless extension candidates. Maximal degree in co-relation 3950. Up to 1109 conditions per place. [2022-11-21 16:17:27,232 INFO L137 encePairwiseOnDemand]: 143/156 looper letters, 53 selfloop transitions, 7 changer transitions 21/167 dead transitions. [2022-11-21 16:17:27,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 167 places, 167 transitions, 597 flow [2022-11-21 16:17:27,233 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-21 16:17:27,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-21 16:17:27,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1220 transitions. [2022-11-21 16:17:27,237 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6517094017094017 [2022-11-21 16:17:27,238 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1220 transitions. [2022-11-21 16:17:27,238 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1220 transitions. [2022-11-21 16:17:27,239 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:27,239 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1220 transitions. [2022-11-21 16:17:27,242 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 101.66666666666667) internal successors, (1220), 12 states have internal predecessors, (1220), 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 16:17:27,247 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 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 16:17:27,248 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 156.0) internal successors, (2028), 13 states have internal predecessors, (2028), 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 16:17:27,248 INFO L175 Difference]: Start difference. First operand has 156 places, 141 transitions, 373 flow. Second operand 12 states and 1220 transitions. [2022-11-21 16:17:27,248 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 167 places, 167 transitions, 597 flow [2022-11-21 16:17:27,254 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 167 transitions, 584 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:17:27,257 INFO L231 Difference]: Finished difference. Result has 164 places, 135 transitions, 340 flow [2022-11-21 16:17:27,257 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=360, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=141, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=340, PETRI_PLACES=164, PETRI_TRANSITIONS=135} [2022-11-21 16:17:27,260 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 24 predicate places. [2022-11-21 16:17:27,261 INFO L495 AbstractCegarLoop]: Abstraction has has 164 places, 135 transitions, 340 flow [2022-11-21 16:17:27,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 99.0) internal successors, (990), 10 states have internal predecessors, (990), 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 16:17:27,262 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:27,262 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] [2022-11-21 16:17:27,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-21 16:17:27,262 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 16:17:27,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:27,264 INFO L85 PathProgramCache]: Analyzing trace with hash -930898012, now seen corresponding path program 1 times [2022-11-21 16:17:27,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:27,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1624546196] [2022-11-21 16:17:27,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:27,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:27,525 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:27,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:27,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1624546196] [2022-11-21 16:17:27,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1624546196] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:27,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [725984964] [2022-11-21 16:17:27,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:27,527 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:27,527 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:27,530 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:27,566 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-21 16:17:27,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:27,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:17:27,701 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:27,990 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:27,990 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:28,371 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [725984964] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:28,371 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:17:28,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-21 16:17:28,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1836440248] [2022-11-21 16:17:28,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:28,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:17:28,372 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:28,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:17:28,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=236, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:17:28,375 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 156 [2022-11-21 16:17:28,377 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 135 transitions, 340 flow. Second operand has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 states have internal predecessors, (1011), 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 16:17:28,377 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:28,377 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 156 [2022-11-21 16:17:28,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:29,315 INFO L130 PetriNetUnfolder]: 1766/3399 cut-off events. [2022-11-21 16:17:29,315 INFO L131 PetriNetUnfolder]: For 946/946 co-relation queries the response was YES. [2022-11-21 16:17:29,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7396 conditions, 3399 events. 1766/3399 cut-off events. For 946/946 co-relation queries the response was YES. Maximal size of possible extension queue 267. Compared 24956 event pairs, 441 based on Foata normal form. 11/3327 useless extension candidates. Maximal degree in co-relation 7380. Up to 793 conditions per place. [2022-11-21 16:17:29,350 INFO L137 encePairwiseOnDemand]: 145/156 looper letters, 78 selfloop transitions, 17 changer transitions 0/191 dead transitions. [2022-11-21 16:17:29,350 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 191 transitions, 685 flow [2022-11-21 16:17:29,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:17:29,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:17:29,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1294 transitions. [2022-11-21 16:17:29,355 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.754079254079254 [2022-11-21 16:17:29,355 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1294 transitions. [2022-11-21 16:17:29,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1294 transitions. [2022-11-21 16:17:29,356 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:29,356 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1294 transitions. [2022-11-21 16:17:29,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 117.63636363636364) internal successors, (1294), 11 states have internal predecessors, (1294), 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 16:17:29,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 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 16:17:29,365 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 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 16:17:29,366 INFO L175 Difference]: Start difference. First operand has 164 places, 135 transitions, 340 flow. Second operand 11 states and 1294 transitions. [2022-11-21 16:17:29,366 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 191 transitions, 685 flow [2022-11-21 16:17:29,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 148 places, 191 transitions, 624 flow, removed 23 selfloop flow, removed 14 redundant places. [2022-11-21 16:17:29,380 INFO L231 Difference]: Finished difference. Result has 153 places, 147 transitions, 403 flow [2022-11-21 16:17:29,381 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=138, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=135, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=125, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=403, PETRI_PLACES=153, PETRI_TRANSITIONS=147} [2022-11-21 16:17:29,382 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 13 predicate places. [2022-11-21 16:17:29,382 INFO L495 AbstractCegarLoop]: Abstraction has has 153 places, 147 transitions, 403 flow [2022-11-21 16:17:29,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 states have internal predecessors, (1011), 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 16:17:29,383 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:29,383 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] [2022-11-21 16:17:29,390 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-21 16:17:29,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-21 16:17:29,591 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 16:17:29,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:29,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1214024902, now seen corresponding path program 2 times [2022-11-21 16:17:29,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:29,593 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254137743] [2022-11-21 16:17:29,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:29,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:29,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:29,876 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:29,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:29,877 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254137743] [2022-11-21 16:17:29,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254137743] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:29,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1354733335] [2022-11-21 16:17:29,878 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-21 16:17:29,878 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:29,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:29,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:29,914 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-21 16:17:30,034 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:17:30,035 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:17:30,037 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:17:30,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:30,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:30,266 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:30,499 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:30,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1354733335] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:30,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:17:30,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 18 [2022-11-21 16:17:30,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585744973] [2022-11-21 16:17:30,500 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:30,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:17:30,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:30,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:17:30,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=242, Unknown=0, NotChecked=0, Total=306 [2022-11-21 16:17:30,502 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 156 [2022-11-21 16:17:30,504 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 147 transitions, 403 flow. Second operand has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 states have internal predecessors, (1011), 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 16:17:30,504 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:30,504 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 156 [2022-11-21 16:17:30,504 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:31,439 INFO L130 PetriNetUnfolder]: 1970/4147 cut-off events. [2022-11-21 16:17:31,439 INFO L131 PetriNetUnfolder]: For 1743/1763 co-relation queries the response was YES. [2022-11-21 16:17:31,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9472 conditions, 4147 events. 1970/4147 cut-off events. For 1743/1763 co-relation queries the response was YES. Maximal size of possible extension queue 285. Compared 32346 event pairs, 357 based on Foata normal form. 9/3851 useless extension candidates. Maximal degree in co-relation 9460. Up to 834 conditions per place. [2022-11-21 16:17:31,480 INFO L137 encePairwiseOnDemand]: 144/156 looper letters, 77 selfloop transitions, 30 changer transitions 0/203 dead transitions. [2022-11-21 16:17:31,480 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 163 places, 203 transitions, 813 flow [2022-11-21 16:17:31,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:17:31,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:17:31,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1286 transitions. [2022-11-21 16:17:31,485 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7494172494172494 [2022-11-21 16:17:31,485 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1286 transitions. [2022-11-21 16:17:31,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1286 transitions. [2022-11-21 16:17:31,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:31,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1286 transitions. [2022-11-21 16:17:31,490 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 116.9090909090909) internal successors, (1286), 11 states have internal predecessors, (1286), 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 16:17:31,494 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 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 16:17:31,495 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 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 16:17:31,495 INFO L175 Difference]: Start difference. First operand has 153 places, 147 transitions, 403 flow. Second operand 11 states and 1286 transitions. [2022-11-21 16:17:31,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 163 places, 203 transitions, 813 flow [2022-11-21 16:17:31,519 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 203 transitions, 808 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-21 16:17:31,522 INFO L231 Difference]: Finished difference. Result has 166 places, 165 transitions, 614 flow [2022-11-21 16:17:31,522 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=398, PETRI_DIFFERENCE_MINUEND_PLACES=150, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=147, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=129, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=614, PETRI_PLACES=166, PETRI_TRANSITIONS=165} [2022-11-21 16:17:31,523 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 26 predicate places. [2022-11-21 16:17:31,523 INFO L495 AbstractCegarLoop]: Abstraction has has 166 places, 165 transitions, 614 flow [2022-11-21 16:17:31,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 states have internal predecessors, (1011), 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 16:17:31,524 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:31,524 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] [2022-11-21 16:17:31,536 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:31,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:31,731 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 16:17:31,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:31,731 INFO L85 PathProgramCache]: Analyzing trace with hash -1636670544, now seen corresponding path program 3 times [2022-11-21 16:17:31,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:31,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717515606] [2022-11-21 16:17:31,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:31,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:31,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:31,982 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:31,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:31,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717515606] [2022-11-21 16:17:31,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717515606] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:31,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [272220166] [2022-11-21 16:17:31,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-21 16:17:31,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:31,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:31,985 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:32,017 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-21 16:17:32,132 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-11-21 16:17:32,132 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:17:32,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:17:32,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:32,430 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:32,430 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:32,769 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:32,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [272220166] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:32,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:17:32,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-11-21 16:17:32,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1207286874] [2022-11-21 16:17:32,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:32,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:17:32,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:32,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:17:32,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=265, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:17:32,773 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 156 [2022-11-21 16:17:32,775 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 166 places, 165 transitions, 614 flow. Second operand has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 states have internal predecessors, (1011), 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 16:17:32,775 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:32,775 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 156 [2022-11-21 16:17:32,775 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:34,244 INFO L130 PetriNetUnfolder]: 2477/5212 cut-off events. [2022-11-21 16:17:34,245 INFO L131 PetriNetUnfolder]: For 8046/8182 co-relation queries the response was YES. [2022-11-21 16:17:34,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14957 conditions, 5212 events. 2477/5212 cut-off events. For 8046/8182 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 42714 event pairs, 493 based on Foata normal form. 81/4911 useless extension candidates. Maximal degree in co-relation 14939. Up to 973 conditions per place. [2022-11-21 16:17:34,298 INFO L137 encePairwiseOnDemand]: 143/156 looper letters, 93 selfloop transitions, 47 changer transitions 0/236 dead transitions. [2022-11-21 16:17:34,298 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 236 transitions, 1234 flow [2022-11-21 16:17:34,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-21 16:17:34,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-21 16:17:34,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 1305 transitions. [2022-11-21 16:17:34,302 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7604895104895105 [2022-11-21 16:17:34,302 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 1305 transitions. [2022-11-21 16:17:34,303 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 1305 transitions. [2022-11-21 16:17:34,304 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:34,304 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 1305 transitions. [2022-11-21 16:17:34,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 118.63636363636364) internal successors, (1305), 11 states have internal predecessors, (1305), 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 16:17:34,311 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 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 16:17:34,312 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 156.0) internal successors, (1872), 12 states have internal predecessors, (1872), 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 16:17:34,312 INFO L175 Difference]: Start difference. First operand has 166 places, 165 transitions, 614 flow. Second operand 11 states and 1305 transitions. [2022-11-21 16:17:34,312 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 236 transitions, 1234 flow [2022-11-21 16:17:34,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 172 places, 236 transitions, 1205 flow, removed 11 selfloop flow, removed 4 redundant places. [2022-11-21 16:17:34,423 INFO L231 Difference]: Finished difference. Result has 177 places, 185 transitions, 942 flow [2022-11-21 16:17:34,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=599, PETRI_DIFFERENCE_MINUEND_PLACES=162, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=942, PETRI_PLACES=177, PETRI_TRANSITIONS=185} [2022-11-21 16:17:34,424 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 37 predicate places. [2022-11-21 16:17:34,424 INFO L495 AbstractCegarLoop]: Abstraction has has 177 places, 185 transitions, 942 flow [2022-11-21 16:17:34,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 states have internal predecessors, (1011), 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 16:17:34,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:34,425 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] [2022-11-21 16:17:34,434 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:34,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:34,632 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 16:17:34,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:34,632 INFO L85 PathProgramCache]: Analyzing trace with hash -361978990, now seen corresponding path program 4 times [2022-11-21 16:17:34,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:34,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521567831] [2022-11-21 16:17:34,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:34,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:34,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:34,949 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:34,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:34,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521567831] [2022-11-21 16:17:34,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1521567831] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:34,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081772272] [2022-11-21 16:17:34,954 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-21 16:17:34,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:34,954 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:34,955 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:34,974 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-21 16:17:35,081 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-21 16:17:35,081 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:17:35,083 INFO L263 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-21 16:17:35,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:35,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:35,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:35,533 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:35,533 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081772272] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:35,533 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:17:35,533 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10, 9] total 19 [2022-11-21 16:17:35,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [133177562] [2022-11-21 16:17:35,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:35,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-21 16:17:35,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:35,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-21 16:17:35,538 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=264, Unknown=0, NotChecked=0, Total=342 [2022-11-21 16:17:35,540 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 109 out of 156 [2022-11-21 16:17:35,541 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 185 transitions, 942 flow. Second operand has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 states have internal predecessors, (1011), 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 16:17:35,541 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:35,542 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 109 of 156 [2022-11-21 16:17:35,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:36,978 INFO L130 PetriNetUnfolder]: 2574/5377 cut-off events. [2022-11-21 16:17:36,979 INFO L131 PetriNetUnfolder]: For 14942/15182 co-relation queries the response was YES. [2022-11-21 16:17:37,012 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17777 conditions, 5377 events. 2574/5377 cut-off events. For 14942/15182 co-relation queries the response was YES. Maximal size of possible extension queue 375. Compared 44108 event pairs, 387 based on Foata normal form. 29/5029 useless extension candidates. Maximal degree in co-relation 17754. Up to 1438 conditions per place. [2022-11-21 16:17:37,057 INFO L137 encePairwiseOnDemand]: 143/156 looper letters, 83 selfloop transitions, 47 changer transitions 0/226 dead transitions. [2022-11-21 16:17:37,057 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 186 places, 226 transitions, 1398 flow [2022-11-21 16:17:37,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-21 16:17:37,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-21 16:17:37,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 1179 transitions. [2022-11-21 16:17:37,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7557692307692307 [2022-11-21 16:17:37,060 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 1179 transitions. [2022-11-21 16:17:37,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 1179 transitions. [2022-11-21 16:17:37,061 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:37,061 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 1179 transitions. [2022-11-21 16:17:37,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 117.9) internal successors, (1179), 10 states have internal predecessors, (1179), 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 16:17:37,067 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 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 16:17:37,068 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 156.0) internal successors, (1716), 11 states have internal predecessors, (1716), 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 16:17:37,068 INFO L175 Difference]: Start difference. First operand has 177 places, 185 transitions, 942 flow. Second operand 10 states and 1179 transitions. [2022-11-21 16:17:37,068 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 186 places, 226 transitions, 1398 flow [2022-11-21 16:17:37,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 226 transitions, 1347 flow, removed 9 selfloop flow, removed 6 redundant places. [2022-11-21 16:17:37,178 INFO L231 Difference]: Finished difference. Result has 183 places, 192 transitions, 1135 flow [2022-11-21 16:17:37,179 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=898, PETRI_DIFFERENCE_MINUEND_PLACES=171, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1135, PETRI_PLACES=183, PETRI_TRANSITIONS=192} [2022-11-21 16:17:37,180 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 43 predicate places. [2022-11-21 16:17:37,180 INFO L495 AbstractCegarLoop]: Abstraction has has 183 places, 192 transitions, 1135 flow [2022-11-21 16:17:37,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 112.33333333333333) internal successors, (1011), 9 states have internal predecessors, (1011), 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 16:17:37,181 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:37,181 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] [2022-11-21 16:17:37,188 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:37,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:37,388 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 16:17:37,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:37,389 INFO L85 PathProgramCache]: Analyzing trace with hash -669176570, now seen corresponding path program 5 times [2022-11-21 16:17:37,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:37,389 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014129289] [2022-11-21 16:17:37,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:37,389 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:37,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:37,666 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:37,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:37,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014129289] [2022-11-21 16:17:37,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014129289] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:37,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [118397580] [2022-11-21 16:17:37,667 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-21 16:17:37,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:37,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:37,668 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:37,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-21 16:17:37,817 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-21 16:17:37,817 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:17:37,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:17:37,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:37,927 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:37,927 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:38,017 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:38,017 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [118397580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:17:38,017 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:17:38,017 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2022-11-21 16:17:38,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1221136422] [2022-11-21 16:17:38,018 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:17:38,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 16:17:38,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:38,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 16:17:38,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:17:38,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 156 [2022-11-21 16:17:38,026 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 183 places, 192 transitions, 1135 flow. Second operand has 17 states, 17 states have (on average 109.47058823529412) internal successors, (1861), 17 states have internal predecessors, (1861), 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 16:17:38,026 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:38,027 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 156 [2022-11-21 16:17:38,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:41,530 INFO L130 PetriNetUnfolder]: 5084/9950 cut-off events. [2022-11-21 16:17:41,530 INFO L131 PetriNetUnfolder]: For 35415/35761 co-relation queries the response was YES. [2022-11-21 16:17:41,611 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34195 conditions, 9950 events. 5084/9950 cut-off events. For 35415/35761 co-relation queries the response was YES. Maximal size of possible extension queue 580. Compared 83903 event pairs, 531 based on Foata normal form. 45/9485 useless extension candidates. Maximal degree in co-relation 34169. Up to 1065 conditions per place. [2022-11-21 16:17:41,688 INFO L137 encePairwiseOnDemand]: 140/156 looper letters, 237 selfloop transitions, 142 changer transitions 0/472 dead transitions. [2022-11-21 16:17:41,688 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 472 transitions, 3741 flow [2022-11-21 16:17:41,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-11-21 16:17:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2022-11-21 16:17:41,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 2829 transitions. [2022-11-21 16:17:41,698 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7556089743589743 [2022-11-21 16:17:41,698 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 2829 transitions. [2022-11-21 16:17:41,698 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 2829 transitions. [2022-11-21 16:17:41,701 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:41,701 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 2829 transitions. [2022-11-21 16:17:41,710 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 117.875) internal successors, (2829), 24 states have internal predecessors, (2829), 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 16:17:41,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 156.0) internal successors, (3900), 25 states have internal predecessors, (3900), 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 16:17:41,720 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 156.0) internal successors, (3900), 25 states have internal predecessors, (3900), 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 16:17:41,721 INFO L175 Difference]: Start difference. First operand has 183 places, 192 transitions, 1135 flow. Second operand 24 states and 2829 transitions. [2022-11-21 16:17:41,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 472 transitions, 3741 flow [2022-11-21 16:17:42,027 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 472 transitions, 3578 flow, removed 30 selfloop flow, removed 6 redundant places. [2022-11-21 16:17:42,035 INFO L231 Difference]: Finished difference. Result has 218 places, 294 transitions, 2746 flow [2022-11-21 16:17:42,035 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=1070, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=192, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=46, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=140, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=2746, PETRI_PLACES=218, PETRI_TRANSITIONS=294} [2022-11-21 16:17:42,036 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 78 predicate places. [2022-11-21 16:17:42,037 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 294 transitions, 2746 flow [2022-11-21 16:17:42,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 109.47058823529412) internal successors, (1861), 17 states have internal predecessors, (1861), 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 16:17:42,038 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:42,038 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] [2022-11-21 16:17:42,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:42,261 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-21 16:17:42,262 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 16:17:42,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:42,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1702374620, now seen corresponding path program 6 times [2022-11-21 16:17:42,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:42,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992811515] [2022-11-21 16:17:42,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:42,263 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:42,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:42,659 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:42,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:42,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992811515] [2022-11-21 16:17:42,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992811515] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:42,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461740565] [2022-11-21 16:17:42,660 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-21 16:17:42,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:42,660 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:42,677 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:42,694 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-21 16:17:42,813 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2022-11-21 16:17:42,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-21 16:17:42,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:17:42,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:42,950 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:42,950 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:43,102 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461740565] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:17:43,102 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:17:43,103 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 17 [2022-11-21 16:17:43,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080545201] [2022-11-21 16:17:43,105 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:17:43,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-11-21 16:17:43,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:43,107 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-11-21 16:17:43,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-11-21 16:17:43,110 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 106 out of 156 [2022-11-21 16:17:43,121 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 294 transitions, 2746 flow. Second operand has 17 states, 17 states have (on average 109.6470588235294) internal successors, (1864), 17 states have internal predecessors, (1864), 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 16:17:43,122 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:43,122 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 106 of 156 [2022-11-21 16:17:43,122 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:47,860 INFO L130 PetriNetUnfolder]: 7590/14548 cut-off events. [2022-11-21 16:17:47,860 INFO L131 PetriNetUnfolder]: For 97611/97961 co-relation queries the response was YES. [2022-11-21 16:17:47,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59583 conditions, 14548 events. 7590/14548 cut-off events. For 97611/97961 co-relation queries the response was YES. Maximal size of possible extension queue 710. Compared 127148 event pairs, 632 based on Foata normal form. 26/14378 useless extension candidates. Maximal degree in co-relation 59540. Up to 1429 conditions per place. [2022-11-21 16:17:48,066 INFO L137 encePairwiseOnDemand]: 140/156 looper letters, 297 selfloop transitions, 268 changer transitions 0/658 dead transitions. [2022-11-21 16:17:48,066 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 251 places, 658 transitions, 6481 flow [2022-11-21 16:17:48,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-21 16:17:48,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2022-11-21 16:17:48,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 3998 transitions. [2022-11-21 16:17:48,076 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7537707390648567 [2022-11-21 16:17:48,076 INFO L72 ComplementDD]: Start complementDD. Operand 34 states and 3998 transitions. [2022-11-21 16:17:48,076 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 3998 transitions. [2022-11-21 16:17:48,078 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:48,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 34 states and 3998 transitions. [2022-11-21 16:17:48,089 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 35 states, 34 states have (on average 117.58823529411765) internal successors, (3998), 34 states have internal predecessors, (3998), 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 16:17:48,097 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 35 states, 35 states have (on average 156.0) internal successors, (5460), 35 states have internal predecessors, (5460), 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 16:17:48,099 INFO L81 ComplementDD]: Finished complementDD. Result has 35 states, 35 states have (on average 156.0) internal successors, (5460), 35 states have internal predecessors, (5460), 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 16:17:48,099 INFO L175 Difference]: Start difference. First operand has 218 places, 294 transitions, 2746 flow. Second operand 34 states and 3998 transitions. [2022-11-21 16:17:48,100 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 251 places, 658 transitions, 6481 flow [2022-11-21 16:17:48,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 658 transitions, 6358 flow, removed 57 selfloop flow, removed 5 redundant places. [2022-11-21 16:17:48,961 INFO L231 Difference]: Finished difference. Result has 256 places, 419 transitions, 4807 flow [2022-11-21 16:17:48,962 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=2671, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=294, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=4807, PETRI_PLACES=256, PETRI_TRANSITIONS=419} [2022-11-21 16:17:48,962 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 116 predicate places. [2022-11-21 16:17:48,962 INFO L495 AbstractCegarLoop]: Abstraction has has 256 places, 419 transitions, 4807 flow [2022-11-21 16:17:48,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 109.6470588235294) internal successors, (1864), 17 states have internal predecessors, (1864), 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 16:17:48,963 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:48,963 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] [2022-11-21 16:17:48,970 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:49,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:49,170 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:17:49,170 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:49,170 INFO L85 PathProgramCache]: Analyzing trace with hash 2023539902, now seen corresponding path program 1 times [2022-11-21 16:17:49,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:49,170 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [724790513] [2022-11-21 16:17:49,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:49,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:49,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:49,332 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:49,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:49,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [724790513] [2022-11-21 16:17:49,333 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [724790513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:49,333 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [652765790] [2022-11-21 16:17:49,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:49,333 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:49,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:49,334 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:49,358 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-21 16:17:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:49,467 INFO L263 TraceCheckSpWp]: Trace formula consists of 298 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-21 16:17:49,469 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:49,619 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:49,619 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:49,821 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:17:49,821 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [652765790] provided 1 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:49,821 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-11-21 16:17:49,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8, 7] total 14 [2022-11-21 16:17:49,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640709248] [2022-11-21 16:17:49,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-21 16:17:49,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-21 16:17:49,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:17:49,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-21 16:17:49,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-11-21 16:17:49,824 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 116 out of 156 [2022-11-21 16:17:49,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 256 places, 419 transitions, 4807 flow. Second operand has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 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 16:17:49,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:17:49,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 116 of 156 [2022-11-21 16:17:49,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:17:51,597 INFO L130 PetriNetUnfolder]: 2738/6682 cut-off events. [2022-11-21 16:17:51,597 INFO L131 PetriNetUnfolder]: For 56015/56886 co-relation queries the response was YES. [2022-11-21 16:17:51,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 27229 conditions, 6682 events. 2738/6682 cut-off events. For 56015/56886 co-relation queries the response was YES. Maximal size of possible extension queue 356. Compared 60972 event pairs, 724 based on Foata normal form. 376/6707 useless extension candidates. Maximal degree in co-relation 27176. Up to 2000 conditions per place. [2022-11-21 16:17:51,701 INFO L137 encePairwiseOnDemand]: 148/156 looper letters, 147 selfloop transitions, 60 changer transitions 0/469 dead transitions. [2022-11-21 16:17:51,701 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 469 transitions, 5974 flow [2022-11-21 16:17:51,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-21 16:17:51,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-21 16:17:51,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 852 transitions. [2022-11-21 16:17:51,704 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7802197802197802 [2022-11-21 16:17:51,704 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 852 transitions. [2022-11-21 16:17:51,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 852 transitions. [2022-11-21 16:17:51,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:17:51,705 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 852 transitions. [2022-11-21 16:17:51,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 121.71428571428571) internal successors, (852), 7 states have internal predecessors, (852), 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 16:17:51,709 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 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 16:17:51,710 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 156.0) internal successors, (1248), 8 states have internal predecessors, (1248), 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 16:17:51,710 INFO L175 Difference]: Start difference. First operand has 256 places, 419 transitions, 4807 flow. Second operand 7 states and 852 transitions. [2022-11-21 16:17:51,710 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 262 places, 469 transitions, 5974 flow [2022-11-21 16:17:52,103 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 251 places, 469 transitions, 5703 flow, removed 33 selfloop flow, removed 11 redundant places. [2022-11-21 16:17:52,111 INFO L231 Difference]: Finished difference. Result has 252 places, 419 transitions, 4729 flow [2022-11-21 16:17:52,112 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=4548, PETRI_DIFFERENCE_MINUEND_PLACES=245, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=418, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=358, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4729, PETRI_PLACES=252, PETRI_TRANSITIONS=419} [2022-11-21 16:17:52,113 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 112 predicate places. [2022-11-21 16:17:52,113 INFO L495 AbstractCegarLoop]: Abstraction has has 252 places, 419 transitions, 4729 flow [2022-11-21 16:17:52,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 119.71428571428571) internal successors, (838), 7 states have internal predecessors, (838), 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 16:17:52,113 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:17:52,114 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] [2022-11-21 16:17:52,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-21 16:17:52,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:52,315 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:17:52,316 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:17:52,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1656776988, now seen corresponding path program 1 times [2022-11-21 16:17:52,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:17:52,317 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1854233834] [2022-11-21 16:17:52,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:52,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:17:52,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:54,452 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:54,452 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:17:54,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1854233834] [2022-11-21 16:17:54,452 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1854233834] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:17:54,453 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1770137436] [2022-11-21 16:17:54,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:17:54,453 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:17:54,453 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:17:54,456 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:17:54,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-21 16:17:54,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:17:54,611 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 75 conjunts are in the unsatisfiable core [2022-11-21 16:17:54,615 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:17:54,678 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 16:17:55,001 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-11-21 16:17:55,002 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 16:17:56,197 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:17:56,368 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:17:56,368 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 19 treesize of output 17 [2022-11-21 16:17:56,742 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:17:56,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:17:59,257 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (~M~0 Int)) (or (= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_328) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~res2~0) c_~res1~0) (not (< ~M~0 c_~N~0)) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-11-21 16:18:01,388 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_328 (Array Int Int)) (~M~0 Int)) (or (= (+ (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_328) c_~A~0.base) (+ c_~A~0.offset (* ~M~0 4))) c_~res2~0) |c_thread1Thread1of1ForFork0_~tmp~0#1|) (not (< ~M~0 c_~N~0)) (< (+ ~M~0 1) c_~N~0))) is different from false [2022-11-21 16:18:01,415 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:18:01,416 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 54 treesize of output 42 [2022-11-21 16:18:01,424 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 11 [2022-11-21 16:18:03,606 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:18:03,606 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1770137436] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-21 16:18:03,606 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-21 16:18:03,607 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 29, 29] total 75 [2022-11-21 16:18:03,607 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [752042659] [2022-11-21 16:18:03,607 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-21 16:18:03,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2022-11-21 16:18:03,608 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-21 16:18:03,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2022-11-21 16:18:03,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=553, Invalid=4709, Unknown=2, NotChecked=286, Total=5550 [2022-11-21 16:18:03,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 54 out of 156 [2022-11-21 16:18:03,621 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 252 places, 419 transitions, 4729 flow. Second operand has 75 states, 75 states have (on average 56.64) internal successors, (4248), 75 states have internal predecessors, (4248), 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 16:18:03,622 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-21 16:18:03,622 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 54 of 156 [2022-11-21 16:18:03,622 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-21 16:18:51,397 INFO L130 PetriNetUnfolder]: 62452/101024 cut-off events. [2022-11-21 16:18:51,397 INFO L131 PetriNetUnfolder]: For 575218/575218 co-relation queries the response was YES. [2022-11-21 16:18:52,251 INFO L83 FinitePrefix]: Finished finitePrefix Result has 387038 conditions, 101024 events. 62452/101024 cut-off events. For 575218/575218 co-relation queries the response was YES. Maximal size of possible extension queue 4491. Compared 946722 event pairs, 7029 based on Foata normal form. 4/100832 useless extension candidates. Maximal degree in co-relation 386989. Up to 31664 conditions per place. [2022-11-21 16:18:52,766 INFO L137 encePairwiseOnDemand]: 112/156 looper letters, 2277 selfloop transitions, 1083 changer transitions 15/3420 dead transitions. [2022-11-21 16:18:52,766 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 3420 transitions, 43341 flow [2022-11-21 16:18:52,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 157 states. [2022-11-21 16:18:52,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2022-11-21 16:18:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 10044 transitions. [2022-11-21 16:18:52,814 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.41009309162175406 [2022-11-21 16:18:52,814 INFO L72 ComplementDD]: Start complementDD. Operand 157 states and 10044 transitions. [2022-11-21 16:18:52,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 157 states and 10044 transitions. [2022-11-21 16:18:52,821 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-21 16:18:52,822 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 157 states and 10044 transitions. [2022-11-21 16:18:52,849 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 158 states, 157 states have (on average 63.97452229299363) internal successors, (10044), 157 states have internal predecessors, (10044), 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 16:18:52,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 158 states, 158 states have (on average 156.0) internal successors, (24648), 158 states have internal predecessors, (24648), 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 16:18:52,908 INFO L81 ComplementDD]: Finished complementDD. Result has 158 states, 158 states have (on average 156.0) internal successors, (24648), 158 states have internal predecessors, (24648), 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 16:18:52,908 INFO L175 Difference]: Start difference. First operand has 252 places, 419 transitions, 4729 flow. Second operand 157 states and 10044 transitions. [2022-11-21 16:18:52,908 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 408 places, 3420 transitions, 43341 flow [2022-11-21 16:19:10,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 403 places, 3420 transitions, 42912 flow, removed 0 selfloop flow, removed 5 redundant places. [2022-11-21 16:19:10,757 INFO L231 Difference]: Finished difference. Result has 505 places, 1591 transitions, 24015 flow [2022-11-21 16:19:10,758 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=156, PETRI_DIFFERENCE_MINUEND_FLOW=4666, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=419, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=224, PETRI_DIFFERENCE_SUBTRAHEND_STATES=157, PETRI_FLOW=24015, PETRI_PLACES=505, PETRI_TRANSITIONS=1591} [2022-11-21 16:19:10,758 INFO L288 CegarLoopForPetriNet]: 140 programPoint places, 365 predicate places. [2022-11-21 16:19:10,759 INFO L495 AbstractCegarLoop]: Abstraction has has 505 places, 1591 transitions, 24015 flow [2022-11-21 16:19:10,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 75 states, 75 states have (on average 56.64) internal successors, (4248), 75 states have internal predecessors, (4248), 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 16:19:10,761 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-21 16:19:10,761 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] [2022-11-21 16:19:10,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-21 16:19:10,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-21 16:19:10,967 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-21 16:19:10,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-21 16:19:10,968 INFO L85 PathProgramCache]: Analyzing trace with hash -1483503436, now seen corresponding path program 1 times [2022-11-21 16:19:10,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-21 16:19:10,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120029441] [2022-11-21 16:19:10,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:10,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-21 16:19:11,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:12,337 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-21 16:19:12,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-21 16:19:12,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120029441] [2022-11-21 16:19:12,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120029441] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-21 16:19:12,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1343477790] [2022-11-21 16:19:12,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-21 16:19:12,338 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-21 16:19:12,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 [2022-11-21 16:19:12,339 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-21 16:19:12,344 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cabee16-9775-4942-8e7c-f6e349cf6571/bin/uautomizer-vX5HgA9Q3a/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-21 16:19:12,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-21 16:19:12,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 73 conjunts are in the unsatisfiable core [2022-11-21 16:19:12,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-21 16:19:12,542 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 16:19:12,605 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-11-21 16:19:12,606 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2022-11-21 16:19:12,688 INFO L321 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2022-11-21 16:19:12,689 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 17 treesize of output 30 [2022-11-21 16:19:13,323 INFO L321 Elim1Store]: treesize reduction 8, result has 68.0 percent of original size [2022-11-21 16:19:13,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 24 treesize of output 34 [2022-11-21 16:19:13,603 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-11-21 16:19:14,049 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 16:19:14,188 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 16:19:14,483 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-11-21 16:19:14,484 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2022-11-21 16:19:14,631 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-11-21 16:19:14,726 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-21 16:19:14,726 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-21 16:19:15,184 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_368 (Array Int Int))) (= (+ c_~res2~0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) c_~A~0.base) c_~A~0.offset)) (+ (select (select |c_#memory_int| c_~A~0.base) c_~A~0.offset) c_~res1~0))) is different from false [2022-11-21 16:19:15,365 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_366 (Array Int Int)) (v_ArrVal_368 (Array Int Int)) (v_ArrVal_367 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_366) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_367))) (= (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) c_~A~0.base) c_~A~0.offset) c_~res2~0) (+ (select (select .cse0 c_~A~0.base) c_~A~0.offset) c_~res1~0)))) is different from false [2022-11-21 16:19:15,429 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_366 (Array Int Int)) (v_ArrVal_368 (Array Int Int)) (v_ArrVal_367 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_366) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_367))) (= (+ (select (select .cse0 |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) c_~res1~0) (+ (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) |c_ULTIMATE.start_main_#t~ret12#1.base|) |c_ULTIMATE.start_main_#t~ret12#1.offset|) c_~res2~0)))) is different from false [2022-11-21 16:19:15,447 WARN L837 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_366 (Array Int Int)) (v_ArrVal_368 (Array Int Int)) (v_ArrVal_367 (Array Int Int))) (let ((.cse0 (store (store |c_#memory_int| |c_ULTIMATE.start_main_~#t1~0#1.base| v_ArrVal_366) |c_ULTIMATE.start_main_~#t2~0#1.base| v_ArrVal_367))) (= (+ c_~res1~0 (select (select .cse0 |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|)) (+ c_~res2~0 (select (select (store .cse0 |c_ULTIMATE.start_main_~#t3~0#1.base| v_ArrVal_368) |c_ULTIMATE.start_create_fresh_int_array_#res#1.base|) |c_ULTIMATE.start_create_fresh_int_array_#res#1.offset|))))) is different from false [2022-11-21 16:19:15,596 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-11-21 16:19:15,597 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 54 treesize of output 43 [2022-11-21 16:19:15,605 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2566 treesize of output 2406 [2022-11-21 16:19:15,640 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2406 treesize of output 2278 [2022-11-21 16:19:15,673 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2278 treesize of output 2150 [2022-11-21 16:19:15,706 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 2150 treesize of output 2070