./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro --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 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb --- 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-8393723 [2022-11-18 19:39:21,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 19:39:21,951 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 19:39:21,982 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 19:39:21,986 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 19:39:21,991 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 19:39:21,996 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 19:39:22,001 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 19:39:22,004 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 19:39:22,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 19:39:22,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 19:39:22,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 19:39:22,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 19:39:22,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 19:39:22,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 19:39:22,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 19:39:22,022 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 19:39:22,023 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 19:39:22,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 19:39:22,034 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 19:39:22,039 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 19:39:22,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 19:39:22,046 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 19:39:22,047 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 19:39:22,062 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 19:39:22,062 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 19:39:22,062 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 19:39:22,064 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 19:39:22,064 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 19:39:22,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 19:39:22,066 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 19:39:22,067 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 19:39:22,068 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 19:39:22,069 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 19:39:22,070 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 19:39:22,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 19:39:22,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 19:39:22,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 19:39:22,076 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 19:39:22,077 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 19:39:22,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 19:39:22,079 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 19:39:22,130 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 19:39:22,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 19:39:22,134 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 19:39:22,134 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 19:39:22,135 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 19:39:22,135 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 19:39:22,136 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 19:39:22,136 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 19:39:22,137 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 19:39:22,137 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 19:39:22,138 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 19:39:22,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 19:39:22,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 19:39:22,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 19:39:22,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 19:39:22,140 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 19:39:22,140 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 19:39:22,140 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 19:39:22,141 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 19:39:22,141 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 19:39:22,141 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 19:39:22,141 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 19:39:22,142 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 19:39:22,142 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 19:39:22,142 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:22,143 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 19:39:22,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 19:39:22,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 19:39:22,145 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 19:39:22,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 19:39:22,146 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 19:39:22,146 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 19:39:22,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 19:39:22,147 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_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 57b20b3268fa30a07af1365aac59c96531ad2ebea6861c18a1d5dfea8339adbb [2022-11-18 19:39:22,506 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 19:39:22,529 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 19:39:22,532 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 19:39:22,533 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 19:39:22,534 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 19:39:22,535 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-18 19:39:22,592 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/data/69c299c17/260db250d1064fffaa24ce7d72d0b50d/FLAG01f6515b7 [2022-11-18 19:39:23,258 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 19:39:23,259 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c [2022-11-18 19:39:23,274 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/data/69c299c17/260db250d1064fffaa24ce7d72d0b50d/FLAG01f6515b7 [2022-11-18 19:39:23,590 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/data/69c299c17/260db250d1064fffaa24ce7d72d0b50d [2022-11-18 19:39:23,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 19:39:23,597 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 19:39:23,603 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:23,604 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 19:39:23,608 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 19:39:23,609 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:23" (1/1) ... [2022-11-18 19:39:23,611 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25e3bf2d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:23, skipping insertion in model container [2022-11-18 19:39:23,612 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 07:39:23" (1/1) ... [2022-11-18 19:39:23,620 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 19:39:23,671 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 19:39:23,928 WARN L234 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_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-18 19:39:23,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:23,949 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 19:39:23,997 WARN L234 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_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/sv-benchmarks/c/weaver/chl-nzb-file-subst.wvr.c[6501,6514] [2022-11-18 19:39:24,002 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 19:39:24,018 INFO L208 MainTranslator]: Completed translation [2022-11-18 19:39:24,018 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24 WrapperNode [2022-11-18 19:39:24,018 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 19:39:24,020 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:24,020 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 19:39:24,020 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 19:39:24,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,041 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,087 INFO L138 Inliner]: procedures = 26, calls = 76, calls flagged for inlining = 28, calls inlined = 42, statements flattened = 574 [2022-11-18 19:39:24,087 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 19:39:24,088 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 19:39:24,088 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 19:39:24,088 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 19:39:24,098 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,121 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,159 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,162 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,168 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 19:39:24,169 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 19:39:24,169 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 19:39:24,169 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 19:39:24,170 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (1/1) ... [2022-11-18 19:39:24,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 19:39:24,192 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:24,207 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 19:39:24,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 19:39:24,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 19:39:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 19:39:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 19:39:24,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 19:39:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 19:39:24,276 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 19:39:24,276 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 19:39:24,278 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 19:39:24,279 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-18 19:39:24,280 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-18 19:39:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 19:39:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-11-18 19:39:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 19:39:24,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 19:39:24,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 19:39:24,283 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-18 19:39:24,530 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 19:39:24,533 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 19:39:25,742 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 19:39:25,769 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 19:39:25,774 INFO L300 CfgBuilder]: Removed 6 assume(true) statements. [2022-11-18 19:39:25,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:25 BoogieIcfgContainer [2022-11-18 19:39:25,782 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 19:39:25,786 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 19:39:25,786 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 19:39:25,794 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 19:39:25,794 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 07:39:23" (1/3) ... [2022-11-18 19:39:25,795 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153c4266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:25, skipping insertion in model container [2022-11-18 19:39:25,795 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 07:39:24" (2/3) ... [2022-11-18 19:39:25,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@153c4266 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 07:39:25, skipping insertion in model container [2022-11-18 19:39:25,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 07:39:25" (3/3) ... [2022-11-18 19:39:25,799 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-nzb-file-subst.wvr.c [2022-11-18 19:39:25,810 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 19:39:25,824 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 19:39:25,824 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 19:39:25,824 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 19:39:26,129 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-18 19:39:26,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 698 places, 761 transitions, 1546 flow [2022-11-18 19:39:26,745 INFO L130 PetriNetUnfolder]: 73/758 cut-off events. [2022-11-18 19:39:26,746 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:39:26,777 INFO L83 FinitePrefix]: Finished finitePrefix Result has 771 conditions, 758 events. 73/758 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 2695 event pairs, 0 based on Foata normal form. 0/684 useless extension candidates. Maximal degree in co-relation 559. Up to 2 conditions per place. [2022-11-18 19:39:26,777 INFO L82 GeneralOperation]: Start removeDead. Operand has 698 places, 761 transitions, 1546 flow [2022-11-18 19:39:26,802 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 684 places, 747 transitions, 1512 flow [2022-11-18 19:39:26,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 19:39:26,825 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;@9636408, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 19:39:26,825 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-18 19:39:27,203 INFO L130 PetriNetUnfolder]: 73/746 cut-off events. [2022-11-18 19:39:27,204 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-18 19:39:27,204 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:27,205 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:27,206 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)] === [2022-11-18 19:39:27,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:27,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1350279025, now seen corresponding path program 1 times [2022-11-18 19:39:27,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:27,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [474626749] [2022-11-18 19:39:27,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:27,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:27,768 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:27,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:27,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [474626749] [2022-11-18 19:39:27,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [474626749] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:27,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:27,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 19:39:27,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1312505300] [2022-11-18 19:39:27,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:27,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 19:39:27,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:27,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 19:39:27,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 19:39:27,859 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 717 out of 761 [2022-11-18 19:39:27,870 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 747 transitions, 1512 flow. Second operand has 2 states, 2 states have (on average 721.5) internal successors, (1443), 2 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:27,871 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:27,871 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 717 of 761 [2022-11-18 19:39:27,872 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:28,211 INFO L130 PetriNetUnfolder]: 36/710 cut-off events. [2022-11-18 19:39:28,212 INFO L131 PetriNetUnfolder]: For 14/16 co-relation queries the response was YES. [2022-11-18 19:39:28,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 730 conditions, 710 events. 36/710 cut-off events. For 14/16 co-relation queries the response was YES. Maximal size of possible extension queue 17. Compared 2657 event pairs, 0 based on Foata normal form. 60/703 useless extension candidates. Maximal degree in co-relation 534. Up to 7 conditions per place. [2022-11-18 19:39:28,234 INFO L137 encePairwiseOnDemand]: 724/761 looper letters, 6 selfloop transitions, 0 changer transitions 7/710 dead transitions. [2022-11-18 19:39:28,235 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 685 places, 710 transitions, 1450 flow [2022-11-18 19:39:28,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 19:39:28,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 19:39:28,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 1477 transitions. [2022-11-18 19:39:28,267 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9704336399474376 [2022-11-18 19:39:28,268 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 1477 transitions. [2022-11-18 19:39:28,269 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 1477 transitions. [2022-11-18 19:39:28,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:28,278 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 1477 transitions. [2022-11-18 19:39:28,286 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 738.5) internal successors, (1477), 2 states have internal predecessors, (1477), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:28,298 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:28,300 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 761.0) internal successors, (2283), 3 states have internal predecessors, (2283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:28,302 INFO L175 Difference]: Start difference. First operand has 684 places, 747 transitions, 1512 flow. Second operand 2 states and 1477 transitions. [2022-11-18 19:39:28,304 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 685 places, 710 transitions, 1450 flow [2022-11-18 19:39:28,314 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 710 transitions, 1438 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-18 19:39:28,328 INFO L231 Difference]: Finished difference. Result has 679 places, 703 transitions, 1412 flow [2022-11-18 19:39:28,331 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=678, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=710, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=1412, PETRI_PLACES=679, PETRI_TRANSITIONS=703} [2022-11-18 19:39:28,336 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -5 predicate places. [2022-11-18 19:39:28,336 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 703 transitions, 1412 flow [2022-11-18 19:39:28,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 721.5) internal successors, (1443), 2 states have internal predecessors, (1443), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:28,338 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:28,338 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:28,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 19:39:28,339 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)] === [2022-11-18 19:39:28,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:28,340 INFO L85 PathProgramCache]: Analyzing trace with hash -179339600, now seen corresponding path program 1 times [2022-11-18 19:39:28,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:28,341 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911929486] [2022-11-18 19:39:28,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:28,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:28,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:28,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:28,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:28,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911929486] [2022-11-18 19:39:28,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911929486] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:28,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:28,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:28,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735947378] [2022-11-18 19:39:28,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:28,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:28,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:28,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:28,711 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:28,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 19:39:28,720 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 703 transitions, 1412 flow. Second operand has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:28,720 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:28,725 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 19:39:28,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:30,103 INFO L130 PetriNetUnfolder]: 166/2140 cut-off events. [2022-11-18 19:39:30,104 INFO L131 PetriNetUnfolder]: For 32/32 co-relation queries the response was YES. [2022-11-18 19:39:30,151 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2323 conditions, 2140 events. 166/2140 cut-off events. For 32/32 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 16967 event pairs, 47 based on Foata normal form. 0/1927 useless extension candidates. Maximal degree in co-relation 2320. Up to 110 conditions per place. [2022-11-18 19:39:30,172 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 33 selfloop transitions, 2 changer transitions 0/718 dead transitions. [2022-11-18 19:39:30,172 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 674 places, 718 transitions, 1517 flow [2022-11-18 19:39:30,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:30,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-18 19:39:30,180 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-18 19:39:30,181 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-18 19:39:30,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-18 19:39:30,183 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:30,183 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-18 19:39:30,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:30,195 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:30,197 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:30,197 INFO L175 Difference]: Start difference. First operand has 679 places, 703 transitions, 1412 flow. Second operand 3 states and 2146 transitions. [2022-11-18 19:39:30,198 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 674 places, 718 transitions, 1517 flow [2022-11-18 19:39:30,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 674 places, 718 transitions, 1517 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:39:30,214 INFO L231 Difference]: Finished difference. Result has 676 places, 705 transitions, 1432 flow [2022-11-18 19:39:30,215 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1412, PETRI_DIFFERENCE_MINUEND_PLACES=672, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=703, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1432, PETRI_PLACES=676, PETRI_TRANSITIONS=705} [2022-11-18 19:39:30,217 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -8 predicate places. [2022-11-18 19:39:30,217 INFO L495 AbstractCegarLoop]: Abstraction has has 676 places, 705 transitions, 1432 flow [2022-11-18 19:39:30,219 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:30,219 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:30,220 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:30,220 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 19:39:30,221 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)] === [2022-11-18 19:39:30,221 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:30,221 INFO L85 PathProgramCache]: Analyzing trace with hash -431614086, now seen corresponding path program 2 times [2022-11-18 19:39:30,222 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:30,223 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [838971018] [2022-11-18 19:39:30,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:30,223 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:30,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:30,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:30,518 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:30,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [838971018] [2022-11-18 19:39:30,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [838971018] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:30,520 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:30,520 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:30,521 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200446203] [2022-11-18 19:39:30,521 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:30,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:30,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:30,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:30,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:30,531 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 19:39:30,535 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 676 places, 705 transitions, 1432 flow. Second operand has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:30,536 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:30,536 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 19:39:30,536 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:31,628 INFO L130 PetriNetUnfolder]: 164/2152 cut-off events. [2022-11-18 19:39:31,628 INFO L131 PetriNetUnfolder]: For 104/107 co-relation queries the response was YES. [2022-11-18 19:39:31,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2406 conditions, 2152 events. 164/2152 cut-off events. For 104/107 co-relation queries the response was YES. Maximal size of possible extension queue 58. Compared 17164 event pairs, 54 based on Foata normal form. 4/1983 useless extension candidates. Maximal degree in co-relation 2401. Up to 132 conditions per place. [2022-11-18 19:39:31,697 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 33 selfloop transitions, 4 changer transitions 0/720 dead transitions. [2022-11-18 19:39:31,697 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 678 places, 720 transitions, 1545 flow [2022-11-18 19:39:31,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:31,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:31,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-18 19:39:31,703 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-18 19:39:31,704 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-18 19:39:31,704 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-18 19:39:31,706 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:31,706 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-18 19:39:31,712 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,718 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,720 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,721 INFO L175 Difference]: Start difference. First operand has 676 places, 705 transitions, 1432 flow. Second operand 3 states and 2146 transitions. [2022-11-18 19:39:31,721 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 678 places, 720 transitions, 1545 flow [2022-11-18 19:39:31,727 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 677 places, 720 transitions, 1543 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:39:31,737 INFO L231 Difference]: Finished difference. Result has 679 places, 707 transitions, 1462 flow [2022-11-18 19:39:31,739 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1430, PETRI_DIFFERENCE_MINUEND_PLACES=675, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=705, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=701, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1462, PETRI_PLACES=679, PETRI_TRANSITIONS=707} [2022-11-18 19:39:31,740 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -5 predicate places. [2022-11-18 19:39:31,740 INFO L495 AbstractCegarLoop]: Abstraction has has 679 places, 707 transitions, 1462 flow [2022-11-18 19:39:31,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.0) internal successors, (2121), 3 states have internal predecessors, (2121), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:31,742 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:31,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-18 19:39:31,743 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)] === [2022-11-18 19:39:31,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:31,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1275383376, now seen corresponding path program 1 times [2022-11-18 19:39:31,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:31,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [684770572] [2022-11-18 19:39:31,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:31,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:31,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:31,903 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:31,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:31,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [684770572] [2022-11-18 19:39:31,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [684770572] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:31,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:31,905 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:31,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615269321] [2022-11-18 19:39:31,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:31,906 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:31,906 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:31,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:31,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:31,910 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 19:39:31,913 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 679 places, 707 transitions, 1462 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:31,914 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:31,914 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 19:39:31,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:33,907 INFO L130 PetriNetUnfolder]: 547/5333 cut-off events. [2022-11-18 19:39:33,908 INFO L131 PetriNetUnfolder]: For 436/519 co-relation queries the response was YES. [2022-11-18 19:39:33,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6050 conditions, 5333 events. 547/5333 cut-off events. For 436/519 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 56428 event pairs, 207 based on Foata normal form. 10/4788 useless extension candidates. Maximal degree in co-relation 6044. Up to 388 conditions per place. [2022-11-18 19:39:34,007 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 34 selfloop transitions, 3 changer transitions 0/722 dead transitions. [2022-11-18 19:39:34,007 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 681 places, 722 transitions, 1580 flow [2022-11-18 19:39:34,008 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:34,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:34,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2145 transitions. [2022-11-18 19:39:34,014 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395532194480947 [2022-11-18 19:39:34,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2145 transitions. [2022-11-18 19:39:34,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2145 transitions. [2022-11-18 19:39:34,016 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:34,016 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2145 transitions. [2022-11-18 19:39:34,022 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.0) internal successors, (2145), 3 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,028 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,030 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,030 INFO L175 Difference]: Start difference. First operand has 679 places, 707 transitions, 1462 flow. Second operand 3 states and 2145 transitions. [2022-11-18 19:39:34,031 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 681 places, 722 transitions, 1580 flow [2022-11-18 19:39:34,037 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 679 places, 722 transitions, 1564 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-18 19:39:34,048 INFO L231 Difference]: Finished difference. Result has 681 places, 710 transitions, 1486 flow [2022-11-18 19:39:34,049 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1450, PETRI_DIFFERENCE_MINUEND_PLACES=677, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=707, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=704, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1486, PETRI_PLACES=681, PETRI_TRANSITIONS=710} [2022-11-18 19:39:34,050 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, -3 predicate places. [2022-11-18 19:39:34,050 INFO L495 AbstractCegarLoop]: Abstraction has has 681 places, 710 transitions, 1486 flow [2022-11-18 19:39:34,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,053 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:34,053 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:34,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 19:39:34,054 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)] === [2022-11-18 19:39:34,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:34,054 INFO L85 PathProgramCache]: Analyzing trace with hash 903614912, now seen corresponding path program 1 times [2022-11-18 19:39:34,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:34,055 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813995024] [2022-11-18 19:39:34,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:34,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:34,190 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:34,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:34,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813995024] [2022-11-18 19:39:34,191 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813995024] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:34,191 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:34,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:34,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657649969] [2022-11-18 19:39:34,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:34,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:34,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:34,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:34,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:34,195 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 19:39:34,199 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 681 places, 710 transitions, 1486 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:34,199 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:34,199 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 19:39:34,199 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:35,816 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([2346] thread3EXIT-->L161-2: Formula: (and (= 0 v_thread3Thread1of1ForFork1_thidvar3_4) (= 0 v_thread3Thread1of1ForFork1_thidvar1_4) (= (let ((.cse0 (mod |v_ULTIMATE.start_main_#t~mem96#1_5| 4294967296))) (ite (<= .cse0 2147483647) .cse0 (+ .cse0 (- 4294967296)))) v_thread3Thread1of1ForFork1_thidvar0_4) (= 0 v_thread3Thread1of1ForFork1_thidvar2_4)) InVars {ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} OutVars{ULTIMATE.start_main_#t~mem96#1=|v_ULTIMATE.start_main_#t~mem96#1_5|, thread3Thread1of1ForFork1_thidvar0=v_thread3Thread1of1ForFork1_thidvar0_4, thread3Thread1of1ForFork1_thidvar3=v_thread3Thread1of1ForFork1_thidvar3_4, thread3Thread1of1ForFork1_thidvar1=v_thread3Thread1of1ForFork1_thidvar1_4, thread3Thread1of1ForFork1_thidvar2=v_thread3Thread1of1ForFork1_thidvar2_4} AuxVars[] AssignedVars[][682], [701#true, Black: 718#(not (= ~is_null_9~0 (* 256 (div ~is_null_9~0 256)))), Black: 704#true, 722#true, 527#L161-2true, Black: 712#(= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0), 716#true, 706#(not (= (* 256 (div ~is_null_5~0 256)) ~is_null_5~0))]) [2022-11-18 19:39:35,817 INFO L383 tUnfolder$Statistics]: this new event has 250 ancestors and is not cut-off event [2022-11-18 19:39:35,817 INFO L386 tUnfolder$Statistics]: existing Event has 250 ancestors and is not cut-off event [2022-11-18 19:39:35,817 INFO L386 tUnfolder$Statistics]: existing Event has 257 ancestors and is not cut-off event [2022-11-18 19:39:35,817 INFO L386 tUnfolder$Statistics]: existing Event has 259 ancestors and is not cut-off event [2022-11-18 19:39:35,850 INFO L130 PetriNetUnfolder]: 347/4119 cut-off events. [2022-11-18 19:39:35,850 INFO L131 PetriNetUnfolder]: For 355/445 co-relation queries the response was YES. [2022-11-18 19:39:35,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4809 conditions, 4119 events. 347/4119 cut-off events. For 355/445 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 41738 event pairs, 117 based on Foata normal form. 10/3794 useless extension candidates. Maximal degree in co-relation 4802. Up to 253 conditions per place. [2022-11-18 19:39:36,003 INFO L137 encePairwiseOnDemand]: 757/761 looper letters, 36 selfloop transitions, 3 changer transitions 0/726 dead transitions. [2022-11-18 19:39:36,003 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 683 places, 726 transitions, 1609 flow [2022-11-18 19:39:36,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:36,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:36,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-18 19:39:36,010 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-18 19:39:36,010 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-18 19:39:36,010 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-18 19:39:36,012 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:36,012 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-18 19:39:36,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,025 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,027 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,027 INFO L175 Difference]: Start difference. First operand has 681 places, 710 transitions, 1486 flow. Second operand 3 states and 2146 transitions. [2022-11-18 19:39:36,028 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 683 places, 726 transitions, 1609 flow [2022-11-18 19:39:36,038 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 682 places, 726 transitions, 1606 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:39:36,048 INFO L231 Difference]: Finished difference. Result has 684 places, 713 transitions, 1523 flow [2022-11-18 19:39:36,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1483, PETRI_DIFFERENCE_MINUEND_PLACES=680, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=710, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1523, PETRI_PLACES=684, PETRI_TRANSITIONS=713} [2022-11-18 19:39:36,053 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 0 predicate places. [2022-11-18 19:39:36,053 INFO L495 AbstractCegarLoop]: Abstraction has has 684 places, 713 transitions, 1523 flow [2022-11-18 19:39:36,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,055 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:36,055 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:36,055 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 19:39:36,056 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)] === [2022-11-18 19:39:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:36,057 INFO L85 PathProgramCache]: Analyzing trace with hash -357312072, now seen corresponding path program 2 times [2022-11-18 19:39:36,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:36,058 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052271877] [2022-11-18 19:39:36,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:36,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:36,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:36,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:36,215 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:36,215 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052271877] [2022-11-18 19:39:36,216 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052271877] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:36,216 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:36,216 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:36,216 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [445846367] [2022-11-18 19:39:36,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:36,218 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:36,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:36,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:36,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:36,222 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 19:39:36,227 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 684 places, 713 transitions, 1523 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:36,227 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:36,228 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 19:39:36,228 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:37,587 INFO L130 PetriNetUnfolder]: 304/3594 cut-off events. [2022-11-18 19:39:37,588 INFO L131 PetriNetUnfolder]: For 602/685 co-relation queries the response was YES. [2022-11-18 19:39:37,644 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4355 conditions, 3594 events. 304/3594 cut-off events. For 602/685 co-relation queries the response was YES. Maximal size of possible extension queue 121. Compared 35141 event pairs, 110 based on Foata normal form. 8/3319 useless extension candidates. Maximal degree in co-relation 4347. Up to 225 conditions per place. [2022-11-18 19:39:37,663 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 36 selfloop transitions, 6 changer transitions 0/728 dead transitions. [2022-11-18 19:39:37,663 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 686 places, 728 transitions, 1654 flow [2022-11-18 19:39:37,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:37,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:37,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2146 transitions. [2022-11-18 19:39:37,670 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9399912395970215 [2022-11-18 19:39:37,670 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2146 transitions. [2022-11-18 19:39:37,670 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2146 transitions. [2022-11-18 19:39:37,672 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:37,672 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2146 transitions. [2022-11-18 19:39:37,688 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.3333333333334) internal successors, (2146), 3 states have internal predecessors, (2146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:37,702 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:37,704 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:37,704 INFO L175 Difference]: Start difference. First operand has 684 places, 713 transitions, 1523 flow. Second operand 3 states and 2146 transitions. [2022-11-18 19:39:37,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 686 places, 728 transitions, 1654 flow [2022-11-18 19:39:37,714 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 685 places, 728 transitions, 1651 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:39:37,727 INFO L231 Difference]: Finished difference. Result has 687 places, 715 transitions, 1572 flow [2022-11-18 19:39:37,728 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1514, PETRI_DIFFERENCE_MINUEND_PLACES=683, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=712, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=706, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1572, PETRI_PLACES=687, PETRI_TRANSITIONS=715} [2022-11-18 19:39:37,730 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 3 predicate places. [2022-11-18 19:39:37,730 INFO L495 AbstractCegarLoop]: Abstraction has has 687 places, 715 transitions, 1572 flow [2022-11-18 19:39:37,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:37,731 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:37,731 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:37,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-18 19:39:37,732 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)] === [2022-11-18 19:39:37,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:37,732 INFO L85 PathProgramCache]: Analyzing trace with hash 964590586, now seen corresponding path program 2 times [2022-11-18 19:39:37,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:37,733 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587966683] [2022-11-18 19:39:37,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:37,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:37,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:37,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:37,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:37,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587966683] [2022-11-18 19:39:37,890 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587966683] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:37,890 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:37,890 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:37,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293604110] [2022-11-18 19:39:37,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:37,896 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:37,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:37,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:37,897 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:37,900 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 19:39:37,903 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 687 places, 715 transitions, 1572 flow. Second operand has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:37,903 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:37,904 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 19:39:37,904 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:40,237 INFO L130 PetriNetUnfolder]: 603/6740 cut-off events. [2022-11-18 19:39:40,238 INFO L131 PetriNetUnfolder]: For 849/961 co-relation queries the response was YES. [2022-11-18 19:39:40,346 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7743 conditions, 6740 events. 603/6740 cut-off events. For 849/961 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 74367 event pairs, 219 based on Foata normal form. 13/6114 useless extension candidates. Maximal degree in co-relation 7734. Up to 422 conditions per place. [2022-11-18 19:39:40,372 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 34 selfloop transitions, 6 changer transitions 0/727 dead transitions. [2022-11-18 19:39:40,372 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 689 places, 727 transitions, 1684 flow [2022-11-18 19:39:40,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:40,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:40,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2145 transitions. [2022-11-18 19:39:40,378 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9395532194480947 [2022-11-18 19:39:40,378 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2145 transitions. [2022-11-18 19:39:40,378 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2145 transitions. [2022-11-18 19:39:40,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:40,380 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2145 transitions. [2022-11-18 19:39:40,385 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 715.0) internal successors, (2145), 3 states have internal predecessors, (2145), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,389 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,391 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,391 INFO L175 Difference]: Start difference. First operand has 687 places, 715 transitions, 1572 flow. Second operand 3 states and 2145 transitions. [2022-11-18 19:39:40,391 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 689 places, 727 transitions, 1684 flow [2022-11-18 19:39:40,398 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 687 places, 727 transitions, 1668 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 19:39:40,406 INFO L231 Difference]: Finished difference. Result has 689 places, 715 transitions, 1596 flow [2022-11-18 19:39:40,407 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1542, PETRI_DIFFERENCE_MINUEND_PLACES=685, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=713, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=707, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1596, PETRI_PLACES=689, PETRI_TRANSITIONS=715} [2022-11-18 19:39:40,408 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 5 predicate places. [2022-11-18 19:39:40,409 INFO L495 AbstractCegarLoop]: Abstraction has has 689 places, 715 transitions, 1596 flow [2022-11-18 19:39:40,410 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 707.3333333333334) internal successors, (2122), 3 states have internal predecessors, (2122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,410 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:40,410 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:40,410 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-18 19:39:40,411 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)] === [2022-11-18 19:39:40,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:40,411 INFO L85 PathProgramCache]: Analyzing trace with hash 1733048076, now seen corresponding path program 1 times [2022-11-18 19:39:40,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:40,412 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [54090695] [2022-11-18 19:39:40,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:40,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:40,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 19:39:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:40,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [54090695] [2022-11-18 19:39:40,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [54090695] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:40,649 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:40,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-18 19:39:40,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236426579] [2022-11-18 19:39:40,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:40,650 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-18 19:39:40,651 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:40,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-18 19:39:40,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-11-18 19:39:40,654 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 684 out of 761 [2022-11-18 19:39:40,658 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 689 places, 715 transitions, 1596 flow. Second operand has 5 states, 5 states have (on average 689.4) internal successors, (3447), 5 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:40,658 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:40,658 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 684 of 761 [2022-11-18 19:39:40,658 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:41,139 INFO L130 PetriNetUnfolder]: 36/946 cut-off events. [2022-11-18 19:39:41,140 INFO L131 PetriNetUnfolder]: For 135/170 co-relation queries the response was YES. [2022-11-18 19:39:41,164 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1116 conditions, 946 events. 36/946 cut-off events. For 135/170 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4793 event pairs, 0 based on Foata normal form. 0/882 useless extension candidates. Maximal degree in co-relation 1106. Up to 55 conditions per place. [2022-11-18 19:39:41,170 INFO L137 encePairwiseOnDemand]: 746/761 looper letters, 39 selfloop transitions, 12 changer transitions 0/727 dead transitions. [2022-11-18 19:39:41,170 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 693 places, 727 transitions, 1722 flow [2022-11-18 19:39:41,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-18 19:39:41,171 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2022-11-18 19:39:41,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 3474 transitions. [2022-11-18 19:39:41,181 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9130091984231274 [2022-11-18 19:39:41,181 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 3474 transitions. [2022-11-18 19:39:41,181 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 3474 transitions. [2022-11-18 19:39:41,184 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:41,184 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 3474 transitions. [2022-11-18 19:39:41,194 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 694.8) internal successors, (3474), 5 states have internal predecessors, (3474), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:41,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:41,206 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 761.0) internal successors, (4566), 6 states have internal predecessors, (4566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:41,206 INFO L175 Difference]: Start difference. First operand has 689 places, 715 transitions, 1596 flow. Second operand 5 states and 3474 transitions. [2022-11-18 19:39:41,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 693 places, 727 transitions, 1722 flow [2022-11-18 19:39:41,214 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 691 places, 727 transitions, 1706 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 19:39:41,226 INFO L231 Difference]: Finished difference. Result has 692 places, 718 transitions, 1628 flow [2022-11-18 19:39:41,227 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1580, PETRI_DIFFERENCE_MINUEND_PLACES=687, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=715, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=703, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1628, PETRI_PLACES=692, PETRI_TRANSITIONS=718} [2022-11-18 19:39:41,228 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 8 predicate places. [2022-11-18 19:39:41,228 INFO L495 AbstractCegarLoop]: Abstraction has has 692 places, 718 transitions, 1628 flow [2022-11-18 19:39:41,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 689.4) internal successors, (3447), 5 states have internal predecessors, (3447), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:41,230 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:41,231 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:41,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 19:39:41,231 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)] === [2022-11-18 19:39:41,232 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:41,232 INFO L85 PathProgramCache]: Analyzing trace with hash 162669468, now seen corresponding path program 1 times [2022-11-18 19:39:41,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:41,233 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596805168] [2022-11-18 19:39:41,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:41,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:41,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:41,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:39:41,663 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:41,663 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596805168] [2022-11-18 19:39:41,663 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596805168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:41,664 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [51669544] [2022-11-18 19:39:41,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:41,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:41,665 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:41,668 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:41,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 19:39:41,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:41,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 565 conjuncts, 6 conjunts are in the unsatisfiable core [2022-11-18 19:39:41,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:42,117 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:39:42,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:42,247 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 19:39:42,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [51669544] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:42,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:39:42,248 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 15 [2022-11-18 19:39:42,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930757316] [2022-11-18 19:39:42,249 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:42,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-11-18 19:39:42,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:42,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-11-18 19:39:42,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2022-11-18 19:39:42,264 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 681 out of 761 [2022-11-18 19:39:42,278 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 692 places, 718 transitions, 1628 flow. Second operand has 15 states, 15 states have (on average 685.0666666666667) internal successors, (10276), 15 states have internal predecessors, (10276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:42,278 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:42,278 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 681 of 761 [2022-11-18 19:39:42,279 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:42,992 INFO L130 PetriNetUnfolder]: 36/970 cut-off events. [2022-11-18 19:39:42,992 INFO L131 PetriNetUnfolder]: For 123/157 co-relation queries the response was YES. [2022-11-18 19:39:43,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1181 conditions, 970 events. 36/970 cut-off events. For 123/157 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4758 event pairs, 0 based on Foata normal form. 6/915 useless extension candidates. Maximal degree in co-relation 1170. Up to 46 conditions per place. [2022-11-18 19:39:43,021 INFO L137 encePairwiseOnDemand]: 737/761 looper letters, 42 selfloop transitions, 33 changer transitions 0/748 dead transitions. [2022-11-18 19:39:43,022 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 702 places, 748 transitions, 1844 flow [2022-11-18 19:39:43,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 19:39:43,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 19:39:43,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 7572 transitions. [2022-11-18 19:39:43,039 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9045514275474854 [2022-11-18 19:39:43,039 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 7572 transitions. [2022-11-18 19:39:43,039 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 7572 transitions. [2022-11-18 19:39:43,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:43,044 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 7572 transitions. [2022-11-18 19:39:43,060 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 688.3636363636364) internal successors, (7572), 11 states have internal predecessors, (7572), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:43,075 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 761.0) internal successors, (9132), 12 states have internal predecessors, (9132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:43,080 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 761.0) internal successors, (9132), 12 states have internal predecessors, (9132), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:43,080 INFO L175 Difference]: Start difference. First operand has 692 places, 718 transitions, 1628 flow. Second operand 11 states and 7572 transitions. [2022-11-18 19:39:43,080 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 702 places, 748 transitions, 1844 flow [2022-11-18 19:39:43,087 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 699 places, 748 transitions, 1826 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 19:39:43,097 INFO L231 Difference]: Finished difference. Result has 702 places, 736 transitions, 1777 flow [2022-11-18 19:39:43,098 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1610, PETRI_DIFFERENCE_MINUEND_PLACES=689, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=718, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=694, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1777, PETRI_PLACES=702, PETRI_TRANSITIONS=736} [2022-11-18 19:39:43,100 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 18 predicate places. [2022-11-18 19:39:43,100 INFO L495 AbstractCegarLoop]: Abstraction has has 702 places, 736 transitions, 1777 flow [2022-11-18 19:39:43,104 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 685.0666666666667) internal successors, (10276), 15 states have internal predecessors, (10276), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:43,104 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:43,105 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:43,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:43,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:43,320 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)] === [2022-11-18 19:39:43,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:43,320 INFO L85 PathProgramCache]: Analyzing trace with hash -139191472, now seen corresponding path program 1 times [2022-11-18 19:39:43,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:43,321 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1440389367] [2022-11-18 19:39:43,321 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:43,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:43,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:43,873 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 19:39:43,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:43,875 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1440389367] [2022-11-18 19:39:43,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1440389367] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 19:39:43,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693634580] [2022-11-18 19:39:43,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:43,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:43,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 19:39:43,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 19:39:43,897 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 19:39:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:44,096 INFO L263 TraceCheckSpWp]: Trace formula consists of 631 conjuncts, 10 conjunts are in the unsatisfiable core [2022-11-18 19:39:44,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 19:39:44,353 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 19:39:44,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 19:39:44,523 INFO L134 CoverageAnalysis]: Checked inductivity of 63 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-11-18 19:39:44,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693634580] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 19:39:44,523 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 19:39:44,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 22 [2022-11-18 19:39:44,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564748580] [2022-11-18 19:39:44,524 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 19:39:44,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-11-18 19:39:44,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:44,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-11-18 19:39:44,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=348, Unknown=0, NotChecked=0, Total=462 [2022-11-18 19:39:44,537 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 681 out of 761 [2022-11-18 19:39:44,550 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 702 places, 736 transitions, 1777 flow. Second operand has 22 states, 22 states have (on average 684.6818181818181) internal successors, (15063), 22 states have internal predecessors, (15063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:44,550 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:44,550 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 681 of 761 [2022-11-18 19:39:44,550 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:45,462 INFO L130 PetriNetUnfolder]: 36/1006 cut-off events. [2022-11-18 19:39:45,462 INFO L131 PetriNetUnfolder]: For 175/209 co-relation queries the response was YES. [2022-11-18 19:39:45,485 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1351 conditions, 1006 events. 36/1006 cut-off events. For 175/209 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4752 event pairs, 0 based on Foata normal form. 6/951 useless extension candidates. Maximal degree in co-relation 1337. Up to 46 conditions per place. [2022-11-18 19:39:45,490 INFO L137 encePairwiseOnDemand]: 737/761 looper letters, 54 selfloop transitions, 51 changer transitions 0/778 dead transitions. [2022-11-18 19:39:45,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 718 places, 778 transitions, 2167 flow [2022-11-18 19:39:45,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 19:39:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 19:39:45,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 11688 transitions. [2022-11-18 19:39:45,512 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9034552059982994 [2022-11-18 19:39:45,513 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 11688 transitions. [2022-11-18 19:39:45,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 11688 transitions. [2022-11-18 19:39:45,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:45,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 11688 transitions. [2022-11-18 19:39:45,540 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 687.5294117647059) internal successors, (11688), 17 states have internal predecessors, (11688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:45,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 761.0) internal successors, (13698), 18 states have internal predecessors, (13698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:45,566 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 761.0) internal successors, (13698), 18 states have internal predecessors, (13698), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:45,567 INFO L175 Difference]: Start difference. First operand has 702 places, 736 transitions, 1777 flow. Second operand 17 states and 11688 transitions. [2022-11-18 19:39:45,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 718 places, 778 transitions, 2167 flow [2022-11-18 19:39:45,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 715 places, 778 transitions, 2130 flow, removed 12 selfloop flow, removed 3 redundant places. [2022-11-18 19:39:45,583 INFO L231 Difference]: Finished difference. Result has 718 places, 757 transitions, 2015 flow [2022-11-18 19:39:45,584 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1752, PETRI_DIFFERENCE_MINUEND_PLACES=699, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=736, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=36, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=697, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2015, PETRI_PLACES=718, PETRI_TRANSITIONS=757} [2022-11-18 19:39:45,585 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 34 predicate places. [2022-11-18 19:39:45,585 INFO L495 AbstractCegarLoop]: Abstraction has has 718 places, 757 transitions, 2015 flow [2022-11-18 19:39:45,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 684.6818181818181) internal successors, (15063), 22 states have internal predecessors, (15063), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:45,590 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:45,590 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:45,603 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 19:39:45,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_ec15d77c-3a76-4f91-8f3c-8d0a9672907a/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 19:39:45,797 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)] === [2022-11-18 19:39:45,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:45,798 INFO L85 PathProgramCache]: Analyzing trace with hash 2004137996, now seen corresponding path program 2 times [2022-11-18 19:39:45,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:45,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081034420] [2022-11-18 19:39:45,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:45,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:45,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:46,152 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 19:39:46,152 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:46,152 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081034420] [2022-11-18 19:39:46,152 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081034420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:46,153 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:46,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:46,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021221845] [2022-11-18 19:39:46,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:46,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:46,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:46,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:46,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:46,157 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 19:39:46,159 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 718 places, 757 transitions, 2015 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:46,160 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:46,160 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 19:39:46,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:47,130 INFO L130 PetriNetUnfolder]: 249/2580 cut-off events. [2022-11-18 19:39:47,130 INFO L131 PetriNetUnfolder]: For 342/376 co-relation queries the response was YES. [2022-11-18 19:39:47,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3232 conditions, 2580 events. 249/2580 cut-off events. For 342/376 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 20126 event pairs, 110 based on Foata normal form. 0/2299 useless extension candidates. Maximal degree in co-relation 3215. Up to 273 conditions per place. [2022-11-18 19:39:47,203 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 23 selfloop transitions, 4 changer transitions 0/764 dead transitions. [2022-11-18 19:39:47,204 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 720 places, 764 transitions, 2086 flow [2022-11-18 19:39:47,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:47,204 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:47,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2137 transitions. [2022-11-18 19:39:47,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9360490582566798 [2022-11-18 19:39:47,209 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2137 transitions. [2022-11-18 19:39:47,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2137 transitions. [2022-11-18 19:39:47,210 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:47,210 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2137 transitions. [2022-11-18 19:39:47,213 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 712.3333333333334) internal successors, (2137), 3 states have internal predecessors, (2137), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,217 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,218 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,218 INFO L175 Difference]: Start difference. First operand has 718 places, 757 transitions, 2015 flow. Second operand 3 states and 2137 transitions. [2022-11-18 19:39:47,218 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 720 places, 764 transitions, 2086 flow [2022-11-18 19:39:47,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 712 places, 764 transitions, 2019 flow, removed 12 selfloop flow, removed 8 redundant places. [2022-11-18 19:39:47,233 INFO L231 Difference]: Finished difference. Result has 713 places, 758 transitions, 1966 flow [2022-11-18 19:39:47,235 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1948, PETRI_DIFFERENCE_MINUEND_PLACES=710, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=757, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=753, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1966, PETRI_PLACES=713, PETRI_TRANSITIONS=758} [2022-11-18 19:39:47,235 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 29 predicate places. [2022-11-18 19:39:47,235 INFO L495 AbstractCegarLoop]: Abstraction has has 713 places, 758 transitions, 1966 flow [2022-11-18 19:39:47,236 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,236 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:47,237 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:47,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 19:39:47,237 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)] === [2022-11-18 19:39:47,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:47,238 INFO L85 PathProgramCache]: Analyzing trace with hash 172495110, now seen corresponding path program 2 times [2022-11-18 19:39:47,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:47,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741716098] [2022-11-18 19:39:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:47,239 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:47,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:47,601 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 19:39:47,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:47,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741716098] [2022-11-18 19:39:47,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1741716098] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:47,604 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:47,604 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:47,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82827828] [2022-11-18 19:39:47,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:47,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:47,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:47,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:47,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:47,608 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 19:39:47,610 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 713 places, 758 transitions, 1966 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:47,610 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:47,610 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 19:39:47,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:50,119 INFO L130 PetriNetUnfolder]: 318/6362 cut-off events. [2022-11-18 19:39:50,120 INFO L131 PetriNetUnfolder]: For 798/916 co-relation queries the response was YES. [2022-11-18 19:39:50,207 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7212 conditions, 6362 events. 318/6362 cut-off events. For 798/916 co-relation queries the response was YES. Maximal size of possible extension queue 124. Compared 63721 event pairs, 22 based on Foata normal form. 1/5813 useless extension candidates. Maximal degree in co-relation 7194. Up to 93 conditions per place. [2022-11-18 19:39:50,223 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 25 selfloop transitions, 4 changer transitions 0/767 dead transitions. [2022-11-18 19:39:50,223 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 715 places, 767 transitions, 2047 flow [2022-11-18 19:39:50,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:50,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:50,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2139 transitions. [2022-11-18 19:39:50,230 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9369250985545335 [2022-11-18 19:39:50,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2139 transitions. [2022-11-18 19:39:50,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2139 transitions. [2022-11-18 19:39:50,231 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:50,231 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2139 transitions. [2022-11-18 19:39:50,235 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 713.0) internal successors, (2139), 3 states have internal predecessors, (2139), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:50,239 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:50,241 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:50,241 INFO L175 Difference]: Start difference. First operand has 713 places, 758 transitions, 1966 flow. Second operand 3 states and 2139 transitions. [2022-11-18 19:39:50,241 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 715 places, 767 transitions, 2047 flow [2022-11-18 19:39:50,251 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 714 places, 767 transitions, 2043 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:39:50,260 INFO L231 Difference]: Finished difference. Result has 715 places, 759 transitions, 1980 flow [2022-11-18 19:39:50,261 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1962, PETRI_DIFFERENCE_MINUEND_PLACES=712, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=758, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=754, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1980, PETRI_PLACES=715, PETRI_TRANSITIONS=759} [2022-11-18 19:39:50,262 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 31 predicate places. [2022-11-18 19:39:50,262 INFO L495 AbstractCegarLoop]: Abstraction has has 715 places, 759 transitions, 1980 flow [2022-11-18 19:39:50,263 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:50,263 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:50,264 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:50,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-18 19:39:50,264 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)] === [2022-11-18 19:39:50,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:50,265 INFO L85 PathProgramCache]: Analyzing trace with hash 1590358715, now seen corresponding path program 1 times [2022-11-18 19:39:50,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:50,265 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641087686] [2022-11-18 19:39:50,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:50,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:50,555 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 19:39:50,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:50,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641087686] [2022-11-18 19:39:50,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641087686] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:50,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:50,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-18 19:39:50,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839414924] [2022-11-18 19:39:50,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:50,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-18 19:39:50,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:50,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-18 19:39:50,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-18 19:39:50,560 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 703 out of 761 [2022-11-18 19:39:50,562 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 715 places, 759 transitions, 1980 flow. Second operand has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:50,563 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:50,563 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 703 of 761 [2022-11-18 19:39:50,563 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:39:52,974 INFO L130 PetriNetUnfolder]: 275/4953 cut-off events. [2022-11-18 19:39:52,974 INFO L131 PetriNetUnfolder]: For 557/733 co-relation queries the response was YES. [2022-11-18 19:39:53,102 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5785 conditions, 4953 events. 275/4953 cut-off events. For 557/733 co-relation queries the response was YES. Maximal size of possible extension queue 122. Compared 48151 event pairs, 55 based on Foata normal form. 3/4512 useless extension candidates. Maximal degree in co-relation 5766. Up to 176 conditions per place. [2022-11-18 19:39:53,129 INFO L137 encePairwiseOnDemand]: 756/761 looper letters, 24 selfloop transitions, 4 changer transitions 0/767 dead transitions. [2022-11-18 19:39:53,129 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 717 places, 767 transitions, 2056 flow [2022-11-18 19:39:53,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-18 19:39:53,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-18 19:39:53,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 2138 transitions. [2022-11-18 19:39:53,137 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9364870784056066 [2022-11-18 19:39:53,138 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 2138 transitions. [2022-11-18 19:39:53,138 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 2138 transitions. [2022-11-18 19:39:53,139 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:39:53,139 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 2138 transitions. [2022-11-18 19:39:53,144 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 712.6666666666666) internal successors, (2138), 3 states have internal predecessors, (2138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:53,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:53,151 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 761.0) internal successors, (3044), 4 states have internal predecessors, (3044), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:53,151 INFO L175 Difference]: Start difference. First operand has 715 places, 759 transitions, 1980 flow. Second operand 3 states and 2138 transitions. [2022-11-18 19:39:53,151 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 717 places, 767 transitions, 2056 flow [2022-11-18 19:39:53,160 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 716 places, 767 transitions, 2052 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:39:53,171 INFO L231 Difference]: Finished difference. Result has 717 places, 760 transitions, 1994 flow [2022-11-18 19:39:53,172 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1976, PETRI_DIFFERENCE_MINUEND_PLACES=714, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=759, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=755, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1994, PETRI_PLACES=717, PETRI_TRANSITIONS=760} [2022-11-18 19:39:53,173 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 33 predicate places. [2022-11-18 19:39:53,173 INFO L495 AbstractCegarLoop]: Abstraction has has 717 places, 760 transitions, 1994 flow [2022-11-18 19:39:53,174 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 706.6666666666666) internal successors, (2120), 3 states have internal predecessors, (2120), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:53,174 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:39:53,175 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:39:53,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-18 19:39:53,175 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)] === [2022-11-18 19:39:53,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:39:53,176 INFO L85 PathProgramCache]: Analyzing trace with hash 342655899, now seen corresponding path program 1 times [2022-11-18 19:39:53,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:39:53,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713341053] [2022-11-18 19:39:53,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:39:53,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:39:53,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:39:53,865 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 19:39:53,866 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:39:53,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713341053] [2022-11-18 19:39:53,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713341053] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:39:53,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:39:53,867 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 19:39:53,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2101590493] [2022-11-18 19:39:53,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:39:53,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 19:39:53,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:39:53,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 19:39:53,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-18 19:39:53,877 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 655 out of 761 [2022-11-18 19:39:53,883 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 717 places, 760 transitions, 1994 flow. Second operand has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:39:53,883 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:39:53,884 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 655 of 761 [2022-11-18 19:39:53,884 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:40:05,526 INFO L130 PetriNetUnfolder]: 5961/35364 cut-off events. [2022-11-18 19:40:05,526 INFO L131 PetriNetUnfolder]: For 2054/2167 co-relation queries the response was YES. [2022-11-18 19:40:05,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44915 conditions, 35364 events. 5961/35364 cut-off events. For 2054/2167 co-relation queries the response was YES. Maximal size of possible extension queue 865. Compared 503735 event pairs, 3852 based on Foata normal form. 8/31248 useless extension candidates. Maximal degree in co-relation 44895. Up to 6391 conditions per place. [2022-11-18 19:40:06,120 INFO L137 encePairwiseOnDemand]: 755/761 looper letters, 104 selfloop transitions, 3 changer transitions 4/810 dead transitions. [2022-11-18 19:40:06,121 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 723 places, 810 transitions, 2325 flow [2022-11-18 19:40:06,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:40:06,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:40:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4697 transitions. [2022-11-18 19:40:06,130 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8817345597897503 [2022-11-18 19:40:06,131 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4697 transitions. [2022-11-18 19:40:06,131 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4697 transitions. [2022-11-18 19:40:06,133 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:40:06,133 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4697 transitions. [2022-11-18 19:40:06,141 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 671.0) internal successors, (4697), 7 states have internal predecessors, (4697), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:06,152 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:06,154 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:06,155 INFO L175 Difference]: Start difference. First operand has 717 places, 760 transitions, 1994 flow. Second operand 7 states and 4697 transitions. [2022-11-18 19:40:06,155 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 723 places, 810 transitions, 2325 flow [2022-11-18 19:40:06,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 722 places, 810 transitions, 2321 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-18 19:40:06,181 INFO L231 Difference]: Finished difference. Result has 727 places, 762 transitions, 2015 flow [2022-11-18 19:40:06,183 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=1990, PETRI_DIFFERENCE_MINUEND_PLACES=716, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=760, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=757, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2015, PETRI_PLACES=727, PETRI_TRANSITIONS=762} [2022-11-18 19:40:06,184 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 43 predicate places. [2022-11-18 19:40:06,184 INFO L495 AbstractCegarLoop]: Abstraction has has 727 places, 762 transitions, 2015 flow [2022-11-18 19:40:06,185 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 661.4285714285714) internal successors, (4630), 7 states have internal predecessors, (4630), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:06,185 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:40:06,186 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:06,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-18 19:40:06,187 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:40:06,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:06,187 INFO L85 PathProgramCache]: Analyzing trace with hash 838221483, now seen corresponding path program 1 times [2022-11-18 19:40:06,188 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:06,188 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874509910] [2022-11-18 19:40:06,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:06,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:06,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:06,831 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 19:40:06,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:06,832 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874509910] [2022-11-18 19:40:06,832 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874509910] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:06,832 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:06,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:40:06,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141878734] [2022-11-18 19:40:06,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:06,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:40:06,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:06,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:40:06,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:40:06,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-18 19:40:06,840 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 727 places, 762 transitions, 2015 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:06,840 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:40:06,840 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-18 19:40:06,840 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:40:17,952 INFO L130 PetriNetUnfolder]: 7178/37009 cut-off events. [2022-11-18 19:40:17,952 INFO L131 PetriNetUnfolder]: For 17090/18445 co-relation queries the response was YES. [2022-11-18 19:40:18,525 INFO L83 FinitePrefix]: Finished finitePrefix Result has 57245 conditions, 37009 events. 7178/37009 cut-off events. For 17090/18445 co-relation queries the response was YES. Maximal size of possible extension queue 761. Compared 509660 event pairs, 2832 based on Foata normal form. 119/34752 useless extension candidates. Maximal degree in co-relation 57220. Up to 4501 conditions per place. [2022-11-18 19:40:18,727 INFO L137 encePairwiseOnDemand]: 747/761 looper letters, 201 selfloop transitions, 23 changer transitions 2/910 dead transitions. [2022-11-18 19:40:18,728 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 731 places, 910 transitions, 3018 flow [2022-11-18 19:40:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:40:18,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:40:18,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4804 transitions. [2022-11-18 19:40:18,737 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9018209123333959 [2022-11-18 19:40:18,737 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4804 transitions. [2022-11-18 19:40:18,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4804 transitions. [2022-11-18 19:40:18,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:40:18,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4804 transitions. [2022-11-18 19:40:18,746 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 686.2857142857143) internal successors, (4804), 7 states have internal predecessors, (4804), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:19,004 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:19,005 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:19,005 INFO L175 Difference]: Start difference. First operand has 727 places, 762 transitions, 2015 flow. Second operand 7 states and 4804 transitions. [2022-11-18 19:40:19,005 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 731 places, 910 transitions, 3018 flow [2022-11-18 19:40:19,096 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 728 places, 910 transitions, 3013 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-18 19:40:19,106 INFO L231 Difference]: Finished difference. Result has 733 places, 785 transitions, 2296 flow [2022-11-18 19:40:19,108 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=2010, PETRI_DIFFERENCE_MINUEND_PLACES=722, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=762, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=746, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2296, PETRI_PLACES=733, PETRI_TRANSITIONS=785} [2022-11-18 19:40:19,108 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 49 predicate places. [2022-11-18 19:40:19,109 INFO L495 AbstractCegarLoop]: Abstraction has has 733 places, 785 transitions, 2296 flow [2022-11-18 19:40:19,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:19,112 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:40:19,112 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:19,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-18 19:40:19,113 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:40:19,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:19,114 INFO L85 PathProgramCache]: Analyzing trace with hash -1806342119, now seen corresponding path program 2 times [2022-11-18 19:40:19,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:19,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [412430436] [2022-11-18 19:40:19,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:19,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:19,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:19,560 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 19:40:19,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:19,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [412430436] [2022-11-18 19:40:19,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [412430436] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:19,561 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:19,561 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:40:19,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303409555] [2022-11-18 19:40:19,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:19,562 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:40:19,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:19,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:40:19,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:40:19,568 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-18 19:40:19,580 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 733 places, 785 transitions, 2296 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:19,590 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:40:19,590 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-18 19:40:19,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 19:40:34,316 INFO L130 PetriNetUnfolder]: 7618/49865 cut-off events. [2022-11-18 19:40:34,316 INFO L131 PetriNetUnfolder]: For 28231/29364 co-relation queries the response was YES. [2022-11-18 19:40:35,105 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73912 conditions, 49865 events. 7618/49865 cut-off events. For 28231/29364 co-relation queries the response was YES. Maximal size of possible extension queue 1026. Compared 751169 event pairs, 5103 based on Foata normal form. 32/46897 useless extension candidates. Maximal degree in co-relation 73885. Up to 8740 conditions per place. [2022-11-18 19:40:35,264 INFO L137 encePairwiseOnDemand]: 743/761 looper letters, 190 selfloop transitions, 13 changer transitions 13/900 dead transitions. [2022-11-18 19:40:35,264 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 739 places, 900 transitions, 3042 flow [2022-11-18 19:40:35,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 19:40:35,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 19:40:35,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 4784 transitions. [2022-11-18 19:40:35,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.898066453914023 [2022-11-18 19:40:35,272 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 4784 transitions. [2022-11-18 19:40:35,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 4784 transitions. [2022-11-18 19:40:35,274 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 19:40:35,274 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 4784 transitions. [2022-11-18 19:40:35,281 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 683.4285714285714) internal successors, (4784), 7 states have internal predecessors, (4784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:35,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:35,287 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 761.0) internal successors, (6088), 8 states have internal predecessors, (6088), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:35,288 INFO L175 Difference]: Start difference. First operand has 733 places, 785 transitions, 2296 flow. Second operand 7 states and 4784 transitions. [2022-11-18 19:40:35,288 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 739 places, 900 transitions, 3042 flow [2022-11-18 19:40:35,416 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 739 places, 900 transitions, 3042 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 19:40:35,423 INFO L231 Difference]: Finished difference. Result has 743 places, 789 transitions, 2380 flow [2022-11-18 19:40:35,424 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=761, PETRI_DIFFERENCE_MINUEND_FLOW=2296, PETRI_DIFFERENCE_MINUEND_PLACES=733, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=785, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=772, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2380, PETRI_PLACES=743, PETRI_TRANSITIONS=789} [2022-11-18 19:40:35,424 INFO L288 CegarLoopForPetriNet]: 684 programPoint places, 59 predicate places. [2022-11-18 19:40:35,424 INFO L495 AbstractCegarLoop]: Abstraction has has 743 places, 789 transitions, 2380 flow [2022-11-18 19:40:35,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:35,425 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 19:40:35,426 INFO L209 CegarLoopForPetriNet]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 19:40:35,426 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-18 19:40:35,426 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-18 19:40:35,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 19:40:35,427 INFO L85 PathProgramCache]: Analyzing trace with hash 1603070241, now seen corresponding path program 3 times [2022-11-18 19:40:35,427 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 19:40:35,427 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [543785223] [2022-11-18 19:40:35,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 19:40:35,428 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 19:40:35,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 19:40:35,865 INFO L134 CoverageAnalysis]: Checked inductivity of 195 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 195 trivial. 0 not checked. [2022-11-18 19:40:35,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 19:40:35,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [543785223] [2022-11-18 19:40:35,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [543785223] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 19:40:35,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 19:40:35,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 19:40:35,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541712078] [2022-11-18 19:40:35,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 19:40:35,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 19:40:35,868 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 19:40:35,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 19:40:35,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2022-11-18 19:40:35,870 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 657 out of 761 [2022-11-18 19:40:35,873 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 743 places, 789 transitions, 2380 flow. Second operand has 6 states, 6 states have (on average 661.6666666666666) internal successors, (3970), 6 states have internal predecessors, (3970), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 19:40:35,873 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 19:40:35,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 657 of 761 [2022-11-18 19:40:35,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand