./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-2.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_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/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_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/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_9e05e9df-8db0-46c6-9367-58075b8e94bf/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 c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 --- 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 20:35:12,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-18 20:35:12,980 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-18 20:35:13,039 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-18 20:35:13,041 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-18 20:35:13,046 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-18 20:35:13,050 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-18 20:35:13,054 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-18 20:35:13,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-18 20:35:13,064 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-18 20:35:13,066 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-18 20:35:13,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-18 20:35:13,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-18 20:35:13,072 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-18 20:35:13,074 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-18 20:35:13,077 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-18 20:35:13,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-18 20:35:13,081 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-18 20:35:13,083 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-18 20:35:13,091 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-18 20:35:13,093 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-18 20:35:13,095 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-18 20:35:13,098 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-18 20:35:13,100 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-18 20:35:13,109 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-18 20:35:13,110 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-18 20:35:13,111 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-18 20:35:13,113 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-18 20:35:13,113 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-18 20:35:13,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-18 20:35:13,116 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-18 20:35:13,118 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-18 20:35:13,120 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-18 20:35:13,122 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-18 20:35:13,124 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-18 20:35:13,125 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-18 20:35:13,126 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-18 20:35:13,126 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-18 20:35:13,126 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-18 20:35:13,128 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-18 20:35:13,128 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-18 20:35:13,129 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-18 20:35:13,178 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-18 20:35:13,178 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-18 20:35:13,179 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-18 20:35:13,179 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-18 20:35:13,181 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-18 20:35:13,181 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-18 20:35:13,182 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-18 20:35:13,182 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-18 20:35:13,182 INFO L138 SettingsManager]: * Use SBE=true [2022-11-18 20:35:13,183 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-18 20:35:13,184 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-18 20:35:13,184 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-18 20:35:13,185 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-18 20:35:13,185 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-18 20:35:13,185 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-18 20:35:13,185 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-18 20:35:13,186 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-18 20:35:13,186 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-18 20:35:13,186 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-18 20:35:13,187 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-18 20:35:13,187 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-18 20:35:13,187 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-18 20:35:13,187 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-18 20:35:13,188 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-18 20:35:13,188 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:35:13,188 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-18 20:35:13,190 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-18 20:35:13,190 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-18 20:35:13,191 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-18 20:35:13,191 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-18 20:35:13,191 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-18 20:35:13,192 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-18 20:35:13,192 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-18 20:35:13,192 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_9e05e9df-8db0-46c6-9367-58075b8e94bf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 [2022-11-18 20:35:13,547 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-18 20:35:13,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-18 20:35:13,585 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-18 20:35:13,587 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-18 20:35:13,588 INFO L275 PluginConnector]: CDTParser initialized [2022-11-18 20:35:13,589 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2022-11-18 20:35:13,677 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/data/91aa8f92d/2f21db1bf34f494fb835870aa8fd34c6/FLAG806ef5a4a [2022-11-18 20:35:14,223 INFO L306 CDTParser]: Found 1 translation units. [2022-11-18 20:35:14,223 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2022-11-18 20:35:14,239 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/data/91aa8f92d/2f21db1bf34f494fb835870aa8fd34c6/FLAG806ef5a4a [2022-11-18 20:35:14,560 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/data/91aa8f92d/2f21db1bf34f494fb835870aa8fd34c6 [2022-11-18 20:35:14,564 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-18 20:35:14,568 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-18 20:35:14,572 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-18 20:35:14,572 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-18 20:35:14,576 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-18 20:35:14,577 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:14" (1/1) ... [2022-11-18 20:35:14,579 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@483e65fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:14, skipping insertion in model container [2022-11-18 20:35:14,580 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 08:35:14" (1/1) ... [2022-11-18 20:35:14,588 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-18 20:35:14,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-18 20:35:14,926 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_9e05e9df-8db0-46c6-9367-58075b8e94bf/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-11-18 20:35:14,939 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:35:14,948 INFO L203 MainTranslator]: Completed pre-run [2022-11-18 20:35:14,987 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_9e05e9df-8db0-46c6-9367-58075b8e94bf/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-11-18 20:35:14,992 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-18 20:35:15,012 INFO L208 MainTranslator]: Completed translation [2022-11-18 20:35:15,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15 WrapperNode [2022-11-18 20:35:15,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-18 20:35:15,015 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-18 20:35:15,015 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-18 20:35:15,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-18 20:35:15,024 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,032 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,063 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-18 20:35:15,063 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-18 20:35:15,065 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-18 20:35:15,065 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-18 20:35:15,065 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-18 20:35:15,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,076 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,078 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,079 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,084 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,089 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,090 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,093 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-18 20:35:15,094 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-18 20:35:15,094 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-18 20:35:15,094 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-18 20:35:15,095 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (1/1) ... [2022-11-18 20:35:15,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-18 20:35:15,133 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:15,150 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-18 20:35:15,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-18 20:35:15,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-18 20:35:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-18 20:35:15,203 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-18 20:35:15,203 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-18 20:35:15,204 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-18 20:35:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-18 20:35:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-18 20:35:15,204 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-18 20:35:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-18 20:35:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-18 20:35:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-18 20:35:15,205 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-18 20:35:15,205 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-18 20:35:15,206 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-18 20:35:15,207 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 20:35:15,337 INFO L235 CfgBuilder]: Building ICFG [2022-11-18 20:35:15,343 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-18 20:35:15,672 INFO L276 CfgBuilder]: Performing block encoding [2022-11-18 20:35:15,694 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-18 20:35:15,694 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-18 20:35:15,696 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:15 BoogieIcfgContainer [2022-11-18 20:35:15,697 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-18 20:35:15,699 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-18 20:35:15,699 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-18 20:35:15,704 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-18 20:35:15,704 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.11 08:35:14" (1/3) ... [2022-11-18 20:35:15,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444c0dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:15, skipping insertion in model container [2022-11-18 20:35:15,705 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 08:35:15" (2/3) ... [2022-11-18 20:35:15,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@444c0dc7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.11 08:35:15, skipping insertion in model container [2022-11-18 20:35:15,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 08:35:15" (3/3) ... [2022-11-18 20:35:15,707 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-11-18 20:35:15,716 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-18 20:35:15,727 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-18 20:35:15,727 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-18 20:35:15,728 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-18 20:35:15,795 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-18 20:35:15,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 224 flow [2022-11-18 20:35:15,888 INFO L130 PetriNetUnfolder]: 8/102 cut-off events. [2022-11-18 20:35:15,889 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:35:15,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111 conditions, 102 events. 8/102 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 68 event pairs, 0 based on Foata normal form. 0/93 useless extension candidates. Maximal degree in co-relation 64. Up to 2 conditions per place. [2022-11-18 20:35:15,894 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 224 flow [2022-11-18 20:35:15,899 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2022-11-18 20:35:15,910 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-18 20:35:15,917 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;@56457c9a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-18 20:35:15,917 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-18 20:35:15,945 INFO L130 PetriNetUnfolder]: 8/92 cut-off events. [2022-11-18 20:35:15,945 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-18 20:35:15,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:15,946 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] [2022-11-18 20:35:15,947 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:15,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:15,953 INFO L85 PathProgramCache]: Analyzing trace with hash -482247264, now seen corresponding path program 1 times [2022-11-18 20:35:15,961 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:15,961 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [868339769] [2022-11-18 20:35:15,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:15,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:16,277 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 20:35:16,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:16,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [868339769] [2022-11-18 20:35:16,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [868339769] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:16,280 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:16,280 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-18 20:35:16,282 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106685492] [2022-11-18 20:35:16,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:16,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-18 20:35:16,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:16,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-18 20:35:16,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-18 20:35:16,330 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 104 [2022-11-18 20:35:16,333 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 93 transitions, 198 flow. Second operand has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 20:35:16,333 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:16,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 104 [2022-11-18 20:35:16,335 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:16,388 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2022-11-18 20:35:16,388 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-18 20:35:16,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 117 conditions, 96 events. 7/96 cut-off events. For 10/11 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 86 event pairs, 1 based on Foata normal form. 7/96 useless extension candidates. Maximal degree in co-relation 65. Up to 10 conditions per place. [2022-11-18 20:35:16,391 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 6 selfloop transitions, 0 changer transitions 2/89 dead transitions. [2022-11-18 20:35:16,391 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 202 flow [2022-11-18 20:35:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-18 20:35:16,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-18 20:35:16,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2022-11-18 20:35:16,407 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9423076923076923 [2022-11-18 20:35:16,408 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2022-11-18 20:35:16,409 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2022-11-18 20:35:16,411 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:16,414 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2022-11-18 20:35:16,417 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 98.0) internal successors, (196), 2 states have internal predecessors, (196), 0 states have call successors, (0), 0 states 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 20:35:16,423 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 20:35:16,423 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 104.0) internal successors, (312), 3 states have internal predecessors, (312), 0 states have call successors, (0), 0 states 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 20:35:16,426 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 198 flow. Second operand 2 states and 196 transitions. [2022-11-18 20:35:16,427 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 202 flow [2022-11-18 20:35:16,431 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 194 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-18 20:35:16,435 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 178 flow [2022-11-18 20:35:16,438 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=182, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=89, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=89, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=178, PETRI_PLACES=89, PETRI_TRANSITIONS=87} [2022-11-18 20:35:16,442 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2022-11-18 20:35:16,443 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 178 flow [2022-11-18 20:35:16,443 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 96.0) internal successors, (192), 2 states have internal predecessors, (192), 0 states have call successors, (0), 0 states 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 20:35:16,444 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:16,444 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] [2022-11-18 20:35:16,444 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-18 20:35:16,445 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:16,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:16,446 INFO L85 PathProgramCache]: Analyzing trace with hash 988484508, now seen corresponding path program 1 times [2022-11-18 20:35:16,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:16,447 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191009484] [2022-11-18 20:35:16,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:16,447 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:16,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:17,313 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 20:35:17,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:17,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191009484] [2022-11-18 20:35:17,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191009484] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:17,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:17,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-18 20:35:17,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651831994] [2022-11-18 20:35:17,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:17,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-18 20:35:17,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:17,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-18 20:35:17,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-18 20:35:17,332 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-18 20:35:17,335 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 87 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 20:35:17,335 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:17,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-18 20:35:17,343 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:17,605 INFO L130 PetriNetUnfolder]: 21/139 cut-off events. [2022-11-18 20:35:17,609 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-18 20:35:17,610 INFO L83 FinitePrefix]: Finished finitePrefix Result has 187 conditions, 139 events. 21/139 cut-off events. For 6/7 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 227 event pairs, 0 based on Foata normal form. 1/129 useless extension candidates. Maximal degree in co-relation 184. Up to 31 conditions per place. [2022-11-18 20:35:17,612 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 15 selfloop transitions, 9 changer transitions 4/97 dead transitions. [2022-11-18 20:35:17,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 97 transitions, 257 flow [2022-11-18 20:35:17,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:35:17,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:35:17,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-11-18 20:35:17,621 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7994505494505495 [2022-11-18 20:35:17,622 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-11-18 20:35:17,622 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-11-18 20:35:17,624 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:17,624 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-11-18 20:35:17,627 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 83.14285714285714) internal successors, (582), 7 states have internal predecessors, (582), 0 states have call successors, (0), 0 states 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 20:35:17,632 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 20:35:17,633 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 20:35:17,633 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 178 flow. Second operand 7 states and 582 transitions. [2022-11-18 20:35:17,634 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 97 transitions, 257 flow [2022-11-18 20:35:17,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:17,641 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 225 flow [2022-11-18 20:35:17,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=225, PETRI_PLACES=96, PETRI_TRANSITIONS=91} [2022-11-18 20:35:17,642 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 4 predicate places. [2022-11-18 20:35:17,642 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 225 flow [2022-11-18 20:35:17,643 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 81.0) internal successors, (567), 7 states have internal predecessors, (567), 0 states have call successors, (0), 0 states 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 20:35:17,643 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:17,643 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] [2022-11-18 20:35:17,643 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-18 20:35:17,644 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:17,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:17,645 INFO L85 PathProgramCache]: Analyzing trace with hash 1851829749, now seen corresponding path program 1 times [2022-11-18 20:35:17,645 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:17,645 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368588573] [2022-11-18 20:35:17,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:17,645 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:17,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:18,069 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:18,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:18,071 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368588573] [2022-11-18 20:35:18,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368588573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:18,073 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1363413418] [2022-11-18 20:35:18,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:18,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:18,074 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:18,079 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:18,087 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-18 20:35:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:18,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:35:18,252 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:18,865 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:18,865 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:19,264 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:19,264 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1363413418] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:19,265 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:19,265 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-18 20:35:19,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644393080] [2022-11-18 20:35:19,266 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:19,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:35:19,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:19,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:35:19,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:35:19,273 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-18 20:35:19,274 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 96 places, 91 transitions, 225 flow. Second operand has 13 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 0 states have call successors, (0), 0 states 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 20:35:19,275 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:19,275 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-18 20:35:19,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:19,870 INFO L130 PetriNetUnfolder]: 116/418 cut-off events. [2022-11-18 20:35:19,870 INFO L131 PetriNetUnfolder]: For 55/62 co-relation queries the response was YES. [2022-11-18 20:35:19,873 INFO L83 FinitePrefix]: Finished finitePrefix Result has 739 conditions, 418 events. 116/418 cut-off events. For 55/62 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 2016 event pairs, 7 based on Foata normal form. 0/362 useless extension candidates. Maximal degree in co-relation 732. Up to 66 conditions per place. [2022-11-18 20:35:19,876 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 57 selfloop transitions, 14 changer transitions 1/133 dead transitions. [2022-11-18 20:35:19,877 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 133 transitions, 480 flow [2022-11-18 20:35:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:35:19,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:35:19,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 763 transitions. [2022-11-18 20:35:19,880 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7336538461538461 [2022-11-18 20:35:19,881 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 763 transitions. [2022-11-18 20:35:19,881 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 763 transitions. [2022-11-18 20:35:19,882 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:19,882 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 763 transitions. [2022-11-18 20:35:19,884 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 76.3) internal successors, (763), 10 states have internal predecessors, (763), 0 states have call successors, (0), 0 states 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 20:35:19,888 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 20:35:19,889 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 20:35:19,890 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 225 flow. Second operand 10 states and 763 transitions. [2022-11-18 20:35:19,890 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 133 transitions, 480 flow [2022-11-18 20:35:19,892 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 133 transitions, 461 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-18 20:35:19,895 INFO L231 Difference]: Finished difference. Result has 103 places, 99 transitions, 290 flow [2022-11-18 20:35:19,896 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=210, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=290, PETRI_PLACES=103, PETRI_TRANSITIONS=99} [2022-11-18 20:35:19,900 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 11 predicate places. [2022-11-18 20:35:19,901 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 99 transitions, 290 flow [2022-11-18 20:35:19,903 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.38461538461539) internal successors, (941), 13 states have internal predecessors, (941), 0 states have call successors, (0), 0 states 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 20:35:19,903 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:19,904 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] [2022-11-18 20:35:19,916 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:20,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:20,110 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:20,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:20,111 INFO L85 PathProgramCache]: Analyzing trace with hash 1177187226, now seen corresponding path program 1 times [2022-11-18 20:35:20,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:20,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116370028] [2022-11-18 20:35:20,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:20,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:20,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:20,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:20,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:20,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116370028] [2022-11-18 20:35:20,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116370028] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:20,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:20,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:35:20,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961417139] [2022-11-18 20:35:20,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:20,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:35:20,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:20,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:35:20,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:20,427 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-18 20:35:20,428 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 103 places, 99 transitions, 290 flow. Second operand has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 20:35:20,428 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:20,429 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-18 20:35:20,433 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:20,712 INFO L130 PetriNetUnfolder]: 111/410 cut-off events. [2022-11-18 20:35:20,712 INFO L131 PetriNetUnfolder]: For 222/226 co-relation queries the response was YES. [2022-11-18 20:35:20,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 874 conditions, 410 events. 111/410 cut-off events. For 222/226 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 1914 event pairs, 12 based on Foata normal form. 2/381 useless extension candidates. Maximal degree in co-relation 865. Up to 120 conditions per place. [2022-11-18 20:35:20,719 INFO L137 encePairwiseOnDemand]: 91/104 looper letters, 47 selfloop transitions, 14 changer transitions 6/128 dead transitions. [2022-11-18 20:35:20,719 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 128 transitions, 543 flow [2022-11-18 20:35:20,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:35:20,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:35:20,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2022-11-18 20:35:20,722 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7417582417582418 [2022-11-18 20:35:20,725 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2022-11-18 20:35:20,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2022-11-18 20:35:20,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:20,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2022-11-18 20:35:20,728 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 77.14285714285714) internal successors, (540), 7 states have internal predecessors, (540), 0 states have call successors, (0), 0 states 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 20:35:20,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 20:35:20,731 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 20:35:20,731 INFO L175 Difference]: Start difference. First operand has 103 places, 99 transitions, 290 flow. Second operand 7 states and 540 transitions. [2022-11-18 20:35:20,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 128 transitions, 543 flow [2022-11-18 20:35:20,736 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 128 transitions, 537 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-18 20:35:20,739 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 356 flow [2022-11-18 20:35:20,740 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=284, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=99, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=356, PETRI_PLACES=109, PETRI_TRANSITIONS=103} [2022-11-18 20:35:20,741 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 17 predicate places. [2022-11-18 20:35:20,742 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 356 flow [2022-11-18 20:35:20,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 72.83333333333333) internal successors, (437), 6 states have internal predecessors, (437), 0 states have call successors, (0), 0 states 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 20:35:20,742 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:20,743 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] [2022-11-18 20:35:20,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-18 20:35:20,744 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:20,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:20,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1158071161, now seen corresponding path program 2 times [2022-11-18 20:35:20,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:20,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814233331] [2022-11-18 20:35:20,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:20,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:20,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:21,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:21,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814233331] [2022-11-18 20:35:21,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814233331] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:21,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:21,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-18 20:35:21,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985079075] [2022-11-18 20:35:21,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:21,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-18 20:35:21,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:21,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-18 20:35:21,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:21,048 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-18 20:35:21,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 109 places, 103 transitions, 356 flow. Second operand has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 20:35:21,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:21,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-18 20:35:21,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:21,280 INFO L130 PetriNetUnfolder]: 107/379 cut-off events. [2022-11-18 20:35:21,281 INFO L131 PetriNetUnfolder]: For 347/351 co-relation queries the response was YES. [2022-11-18 20:35:21,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 379 events. 107/379 cut-off events. For 347/351 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1745 event pairs, 9 based on Foata normal form. 1/356 useless extension candidates. Maximal degree in co-relation 866. Up to 101 conditions per place. [2022-11-18 20:35:21,286 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 43 selfloop transitions, 14 changer transitions 3/121 dead transitions. [2022-11-18 20:35:21,286 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 553 flow [2022-11-18 20:35:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-18 20:35:21,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-18 20:35:21,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2022-11-18 20:35:21,289 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2022-11-18 20:35:21,289 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2022-11-18 20:35:21,289 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2022-11-18 20:35:21,290 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:21,290 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2022-11-18 20:35:21,293 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 76.0) internal successors, (532), 7 states have internal predecessors, (532), 0 states have call successors, (0), 0 states 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 20:35:21,295 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 20:35:21,295 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 104.0) internal successors, (832), 8 states have internal predecessors, (832), 0 states have call successors, (0), 0 states 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 20:35:21,295 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 356 flow. Second operand 7 states and 532 transitions. [2022-11-18 20:35:21,296 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 553 flow [2022-11-18 20:35:21,303 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 121 transitions, 545 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-18 20:35:21,308 INFO L231 Difference]: Finished difference. Result has 115 places, 105 transitions, 404 flow [2022-11-18 20:35:21,308 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=338, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=404, PETRI_PLACES=115, PETRI_TRANSITIONS=105} [2022-11-18 20:35:21,311 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 23 predicate places. [2022-11-18 20:35:21,312 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 404 flow [2022-11-18 20:35:21,312 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 73.0) internal successors, (438), 6 states have internal predecessors, (438), 0 states have call successors, (0), 0 states 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 20:35:21,312 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:21,313 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] [2022-11-18 20:35:21,313 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-18 20:35:21,313 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:21,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:21,314 INFO L85 PathProgramCache]: Analyzing trace with hash -1156094028, now seen corresponding path program 2 times [2022-11-18 20:35:21,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:21,315 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [504380368] [2022-11-18 20:35:21,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:21,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:21,665 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:21,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:21,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [504380368] [2022-11-18 20:35:21,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [504380368] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:21,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1982593763] [2022-11-18 20:35:21,667 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:35:21,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:21,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:21,668 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:21,699 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-18 20:35:21,782 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:35:21,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:21,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-18 20:35:21,787 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:22,103 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:22,104 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:22,383 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:22,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1982593763] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:22,384 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:22,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-18 20:35:22,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [635923070] [2022-11-18 20:35:22,384 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:22,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-18 20:35:22,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:22,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-18 20:35:22,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-18 20:35:22,388 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-18 20:35:22,389 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 105 transitions, 404 flow. Second operand has 13 states, 13 states have (on average 72.15384615384616) internal successors, (938), 13 states have internal predecessors, (938), 0 states have call successors, (0), 0 states 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 20:35:22,389 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:22,389 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-18 20:35:22,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:22,908 INFO L130 PetriNetUnfolder]: 125/419 cut-off events. [2022-11-18 20:35:22,909 INFO L131 PetriNetUnfolder]: For 632/632 co-relation queries the response was YES. [2022-11-18 20:35:22,911 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047 conditions, 419 events. 125/419 cut-off events. For 632/632 co-relation queries the response was YES. Maximal size of possible extension queue 24. Compared 1879 event pairs, 17 based on Foata normal form. 4/388 useless extension candidates. Maximal degree in co-relation 1031. Up to 79 conditions per place. [2022-11-18 20:35:22,914 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 57 selfloop transitions, 17 changer transitions 0/135 dead transitions. [2022-11-18 20:35:22,914 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 135 transitions, 709 flow [2022-11-18 20:35:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:35:22,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:35:22,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 749 transitions. [2022-11-18 20:35:22,917 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7201923076923077 [2022-11-18 20:35:22,918 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 749 transitions. [2022-11-18 20:35:22,918 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 749 transitions. [2022-11-18 20:35:22,919 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:22,919 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 749 transitions. [2022-11-18 20:35:22,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 74.9) internal successors, (749), 10 states have internal predecessors, (749), 0 states have call successors, (0), 0 states 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 20:35:22,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 20:35:22,924 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 20:35:22,924 INFO L175 Difference]: Start difference. First operand has 115 places, 105 transitions, 404 flow. Second operand 10 states and 749 transitions. [2022-11-18 20:35:22,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 135 transitions, 709 flow [2022-11-18 20:35:22,929 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 135 transitions, 683 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-18 20:35:22,931 INFO L231 Difference]: Finished difference. Result has 123 places, 111 transitions, 482 flow [2022-11-18 20:35:22,932 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=380, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=105, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=482, PETRI_PLACES=123, PETRI_TRANSITIONS=111} [2022-11-18 20:35:22,932 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 31 predicate places. [2022-11-18 20:35:22,933 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 111 transitions, 482 flow [2022-11-18 20:35:22,933 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 72.15384615384616) internal successors, (938), 13 states have internal predecessors, (938), 0 states have call successors, (0), 0 states 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 20:35:22,934 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:22,934 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] [2022-11-18 20:35:22,945 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:23,145 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-18 20:35:23,146 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:23,146 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:23,146 INFO L85 PathProgramCache]: Analyzing trace with hash -822204273, now seen corresponding path program 1 times [2022-11-18 20:35:23,147 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:23,147 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515249123] [2022-11-18 20:35:23,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:23,147 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:23,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:23,719 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:23,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:23,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515249123] [2022-11-18 20:35:23,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [515249123] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:23,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1286261490] [2022-11-18 20:35:23,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:23,721 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:23,721 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:23,722 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:23,753 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-18 20:35:23,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:23,856 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:35:23,859 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:24,281 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:24,281 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:24,709 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:24,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1286261490] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:24,710 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:24,710 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-18 20:35:24,711 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320565871] [2022-11-18 20:35:24,711 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:24,712 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-18 20:35:24,712 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:24,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-18 20:35:24,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-18 20:35:24,715 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2022-11-18 20:35:24,717 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 123 places, 111 transitions, 482 flow. Second operand has 18 states, 18 states have (on average 71.0) internal successors, (1278), 18 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states 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 20:35:24,717 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:24,717 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2022-11-18 20:35:24,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:25,776 INFO L130 PetriNetUnfolder]: 209/614 cut-off events. [2022-11-18 20:35:25,776 INFO L131 PetriNetUnfolder]: For 1254/1254 co-relation queries the response was YES. [2022-11-18 20:35:25,780 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1683 conditions, 614 events. 209/614 cut-off events. For 1254/1254 co-relation queries the response was YES. Maximal size of possible extension queue 33. Compared 3044 event pairs, 6 based on Foata normal form. 12/582 useless extension candidates. Maximal degree in co-relation 1664. Up to 128 conditions per place. [2022-11-18 20:35:25,784 INFO L137 encePairwiseOnDemand]: 90/104 looper letters, 91 selfloop transitions, 30 changer transitions 0/181 dead transitions. [2022-11-18 20:35:25,785 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 181 transitions, 1151 flow [2022-11-18 20:35:25,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-18 20:35:25,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-18 20:35:25,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1255 transitions. [2022-11-18 20:35:25,790 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.709841628959276 [2022-11-18 20:35:25,790 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1255 transitions. [2022-11-18 20:35:25,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1255 transitions. [2022-11-18 20:35:25,791 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:25,792 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1255 transitions. [2022-11-18 20:35:25,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 73.82352941176471) internal successors, (1255), 17 states have internal predecessors, (1255), 0 states have call successors, (0), 0 states 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 20:35:25,800 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 104.0) internal successors, (1872), 18 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:25,801 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 104.0) internal successors, (1872), 18 states have internal predecessors, (1872), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:25,801 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 482 flow. Second operand 17 states and 1255 transitions. [2022-11-18 20:35:25,801 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 181 transitions, 1151 flow [2022-11-18 20:35:25,808 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 181 transitions, 1119 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-18 20:35:25,811 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 680 flow [2022-11-18 20:35:25,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=461, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=17, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=680, PETRI_PLACES=140, PETRI_TRANSITIONS=125} [2022-11-18 20:35:25,812 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 48 predicate places. [2022-11-18 20:35:25,813 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 680 flow [2022-11-18 20:35:25,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 71.0) internal successors, (1278), 18 states have internal predecessors, (1278), 0 states have call successors, (0), 0 states 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 20:35:25,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:25,814 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:25,824 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:26,020 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:26,021 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:26,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:26,022 INFO L85 PathProgramCache]: Analyzing trace with hash -869025409, now seen corresponding path program 2 times [2022-11-18 20:35:26,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:26,022 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917849426] [2022-11-18 20:35:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:26,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:26,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:26,265 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:26,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:26,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917849426] [2022-11-18 20:35:26,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917849426] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:26,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:26,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:26,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70881608] [2022-11-18 20:35:26,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:26,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:26,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:26,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:26,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:26,269 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-18 20:35:26,270 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 140 places, 125 transitions, 680 flow. Second operand has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 20:35:26,270 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:26,270 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-18 20:35:26,270 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:26,513 INFO L130 PetriNetUnfolder]: 230/959 cut-off events. [2022-11-18 20:35:26,513 INFO L131 PetriNetUnfolder]: For 2150/2154 co-relation queries the response was YES. [2022-11-18 20:35:26,520 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 959 events. 230/959 cut-off events. For 2150/2154 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 6731 event pairs, 35 based on Foata normal form. 1/909 useless extension candidates. Maximal degree in co-relation 2681. Up to 193 conditions per place. [2022-11-18 20:35:26,526 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 22 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2022-11-18 20:35:26,527 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 139 transitions, 778 flow [2022-11-18 20:35:26,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:26,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:35:26,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-18 20:35:26,529 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-11-18 20:35:26,529 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-18 20:35:26,529 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-18 20:35:26,530 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:26,530 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-18 20:35:26,531 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.25) internal successors, (377), 4 states have internal predecessors, (377), 0 states have call successors, (0), 0 states 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 20:35:26,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 20:35:26,533 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 20:35:26,533 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 680 flow. Second operand 4 states and 377 transitions. [2022-11-18 20:35:26,533 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 139 transitions, 778 flow [2022-11-18 20:35:26,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 139 transitions, 752 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-18 20:35:26,547 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 688 flow [2022-11-18 20:35:26,547 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=654, PETRI_DIFFERENCE_MINUEND_PLACES=133, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=125, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=121, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=688, PETRI_PLACES=139, PETRI_TRANSITIONS=128} [2022-11-18 20:35:26,548 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 47 predicate places. [2022-11-18 20:35:26,548 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 688 flow [2022-11-18 20:35:26,549 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 90.75) internal successors, (363), 4 states have internal predecessors, (363), 0 states have call successors, (0), 0 states 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 20:35:26,549 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:26,549 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:26,549 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-18 20:35:26,550 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:26,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:26,550 INFO L85 PathProgramCache]: Analyzing trace with hash 872325249, now seen corresponding path program 1 times [2022-11-18 20:35:26,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:26,551 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [523004226] [2022-11-18 20:35:26,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:26,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:27,155 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:27,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:27,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [523004226] [2022-11-18 20:35:27,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [523004226] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:27,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1530497764] [2022-11-18 20:35:27,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:27,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:27,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:27,159 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:27,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-18 20:35:27,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:27,319 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-18 20:35:27,322 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:27,809 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:35:27,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:28,641 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:35:28,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1530497764] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:28,642 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:28,642 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2022-11-18 20:35:28,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639393344] [2022-11-18 20:35:28,643 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:28,644 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-18 20:35:28,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:28,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-18 20:35:28,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-11-18 20:35:28,647 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-18 20:35:28,649 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 128 transitions, 688 flow. Second operand has 21 states, 21 states have (on average 70.04761904761905) internal successors, (1471), 21 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states 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 20:35:28,649 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:28,649 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-18 20:35:28,650 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:31,124 INFO L130 PetriNetUnfolder]: 762/2095 cut-off events. [2022-11-18 20:35:31,125 INFO L131 PetriNetUnfolder]: For 6995/7031 co-relation queries the response was YES. [2022-11-18 20:35:31,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7237 conditions, 2095 events. 762/2095 cut-off events. For 6995/7031 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 14962 event pairs, 88 based on Foata normal form. 67/2078 useless extension candidates. Maximal degree in co-relation 7209. Up to 392 conditions per place. [2022-11-18 20:35:31,152 INFO L137 encePairwiseOnDemand]: 88/104 looper letters, 132 selfloop transitions, 48 changer transitions 0/242 dead transitions. [2022-11-18 20:35:31,153 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 242 transitions, 1862 flow [2022-11-18 20:35:31,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-18 20:35:31,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-18 20:35:31,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1675 transitions. [2022-11-18 20:35:31,159 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7002508361204013 [2022-11-18 20:35:31,160 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1675 transitions. [2022-11-18 20:35:31,160 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1675 transitions. [2022-11-18 20:35:31,161 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:31,162 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1675 transitions. [2022-11-18 20:35:31,167 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 24 states, 23 states have (on average 72.82608695652173) internal successors, (1675), 23 states have internal predecessors, (1675), 0 states have call successors, (0), 0 states 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 20:35:31,173 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 24 states, 24 states have (on average 104.0) internal successors, (2496), 24 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states 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 20:35:31,174 INFO L81 ComplementDD]: Finished complementDD. Result has 24 states, 24 states have (on average 104.0) internal successors, (2496), 24 states have internal predecessors, (2496), 0 states have call successors, (0), 0 states 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 20:35:31,174 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 688 flow. Second operand 23 states and 1675 transitions. [2022-11-18 20:35:31,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 242 transitions, 1862 flow [2022-11-18 20:35:31,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 242 transitions, 1862 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:31,208 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 1153 flow [2022-11-18 20:35:31,209 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=688, PETRI_DIFFERENCE_MINUEND_PLACES=139, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=128, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=102, PETRI_DIFFERENCE_SUBTRAHEND_STATES=23, PETRI_FLOW=1153, PETRI_PLACES=173, PETRI_TRANSITIONS=160} [2022-11-18 20:35:31,210 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 81 predicate places. [2022-11-18 20:35:31,210 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 1153 flow [2022-11-18 20:35:31,211 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 70.04761904761905) internal successors, (1471), 21 states have internal predecessors, (1471), 0 states have call successors, (0), 0 states 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 20:35:31,211 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:31,212 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:31,227 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:31,418 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:31,419 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:31,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:31,419 INFO L85 PathProgramCache]: Analyzing trace with hash 600330390, now seen corresponding path program 1 times [2022-11-18 20:35:31,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:31,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748129247] [2022-11-18 20:35:31,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:31,420 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:31,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:31,673 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:31,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748129247] [2022-11-18 20:35:31,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748129247] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:31,674 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665781325] [2022-11-18 20:35:31,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:31,674 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:31,674 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:31,676 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:31,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-18 20:35:31,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:31,784 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-18 20:35:31,786 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:31,868 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:35:31,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-18 20:35:31,868 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665781325] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:31,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-18 20:35:31,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-18 20:35:31,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1695133852] [2022-11-18 20:35:31,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:31,870 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:31,870 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:31,871 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:31,871 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-18 20:35:31,872 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-18 20:35:31,872 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 160 transitions, 1153 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 20:35:31,872 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:31,873 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-18 20:35:31,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:32,507 INFO L130 PetriNetUnfolder]: 478/2731 cut-off events. [2022-11-18 20:35:32,507 INFO L131 PetriNetUnfolder]: For 12096/12236 co-relation queries the response was YES. [2022-11-18 20:35:32,533 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 2731 events. 478/2731 cut-off events. For 12096/12236 co-relation queries the response was YES. Maximal size of possible extension queue 150. Compared 26986 event pairs, 103 based on Foata normal form. 32/2676 useless extension candidates. Maximal degree in co-relation 9422. Up to 368 conditions per place. [2022-11-18 20:35:32,549 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 19 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-11-18 20:35:32,549 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 171 transitions, 1231 flow [2022-11-18 20:35:32,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:32,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:35:32,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-11-18 20:35:32,551 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9038461538461539 [2022-11-18 20:35:32,551 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-11-18 20:35:32,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-11-18 20:35:32,552 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:32,552 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-11-18 20:35:32,554 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 94.0) internal successors, (376), 4 states have internal predecessors, (376), 0 states have call successors, (0), 0 states 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 20:35:32,555 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 20:35:32,555 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 20:35:32,555 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 1153 flow. Second operand 4 states and 376 transitions. [2022-11-18 20:35:32,556 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 171 transitions, 1231 flow [2022-11-18 20:35:32,623 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 171 transitions, 1182 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-11-18 20:35:32,626 INFO L231 Difference]: Finished difference. Result has 173 places, 163 transitions, 1138 flow [2022-11-18 20:35:32,627 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1104, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=160, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1138, PETRI_PLACES=173, PETRI_TRANSITIONS=163} [2022-11-18 20:35:32,627 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 81 predicate places. [2022-11-18 20:35:32,628 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 163 transitions, 1138 flow [2022-11-18 20:35:32,628 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 20:35:32,628 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:32,628 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:32,635 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:32,834 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-18 20:35:32,835 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:32,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:32,836 INFO L85 PathProgramCache]: Analyzing trace with hash -857400482, now seen corresponding path program 1 times [2022-11-18 20:35:32,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:32,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260889266] [2022-11-18 20:35:32,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:32,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:32,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:33,072 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:35:33,072 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:33,072 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260889266] [2022-11-18 20:35:33,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260889266] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:33,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:33,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:33,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763252242] [2022-11-18 20:35:33,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:33,077 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:33,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:33,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:33,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:33,079 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-18 20:35:33,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 173 places, 163 transitions, 1138 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 20:35:33,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:33,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-18 20:35:33,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:33,814 INFO L130 PetriNetUnfolder]: 546/2510 cut-off events. [2022-11-18 20:35:33,814 INFO L131 PetriNetUnfolder]: For 10414/10480 co-relation queries the response was YES. [2022-11-18 20:35:33,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 2510 events. 546/2510 cut-off events. For 10414/10480 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 23752 event pairs, 92 based on Foata normal form. 62/2532 useless extension candidates. Maximal degree in co-relation 9001. Up to 405 conditions per place. [2022-11-18 20:35:33,852 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 22 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2022-11-18 20:35:33,853 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 175 transitions, 1243 flow [2022-11-18 20:35:33,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:33,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:35:33,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-11-18 20:35:33,855 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9014423076923077 [2022-11-18 20:35:33,855 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-11-18 20:35:33,855 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-11-18 20:35:33,856 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:33,856 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-11-18 20:35:33,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.75) internal successors, (375), 4 states have internal predecessors, (375), 0 states have call successors, (0), 0 states 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 20:35:33,858 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 20:35:33,859 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 20:35:33,859 INFO L175 Difference]: Start difference. First operand has 173 places, 163 transitions, 1138 flow. Second operand 4 states and 375 transitions. [2022-11-18 20:35:33,859 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 175 transitions, 1243 flow [2022-11-18 20:35:33,946 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 1243 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:33,949 INFO L231 Difference]: Finished difference. Result has 178 places, 165 transitions, 1172 flow [2022-11-18 20:35:33,950 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1138, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=163, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=1172, PETRI_PLACES=178, PETRI_TRANSITIONS=165} [2022-11-18 20:35:33,951 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 86 predicate places. [2022-11-18 20:35:33,951 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 165 transitions, 1172 flow [2022-11-18 20:35:33,951 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 20:35:33,952 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:33,952 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:33,952 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-18 20:35:33,952 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:33,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:33,953 INFO L85 PathProgramCache]: Analyzing trace with hash 1020424850, now seen corresponding path program 1 times [2022-11-18 20:35:33,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:33,953 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [301075304] [2022-11-18 20:35:33,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:33,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:34,470 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:34,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:34,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [301075304] [2022-11-18 20:35:34,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [301075304] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:34,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1586594980] [2022-11-18 20:35:34,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:34,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:34,471 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:34,473 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:34,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-18 20:35:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:34,578 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:35:34,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:34,878 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:34,878 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:35,074 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:35,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1586594980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:35,075 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:35,075 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-18 20:35:35,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241046400] [2022-11-18 20:35:35,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:35,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:35:35,077 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:35,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:35:35,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:35:35,078 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-18 20:35:35,080 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 165 transitions, 1172 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 20:35:35,080 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:35,080 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-18 20:35:35,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:36,012 INFO L130 PetriNetUnfolder]: 478/2754 cut-off events. [2022-11-18 20:35:36,013 INFO L131 PetriNetUnfolder]: For 12323/12490 co-relation queries the response was YES. [2022-11-18 20:35:36,041 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10041 conditions, 2754 events. 478/2754 cut-off events. For 12323/12490 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 27324 event pairs, 119 based on Foata normal form. 47/2745 useless extension candidates. Maximal degree in co-relation 9996. Up to 449 conditions per place. [2022-11-18 20:35:36,054 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 29 selfloop transitions, 19 changer transitions 4/195 dead transitions. [2022-11-18 20:35:36,055 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 195 transitions, 1365 flow [2022-11-18 20:35:36,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:35:36,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:35:36,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2022-11-18 20:35:36,060 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8105769230769231 [2022-11-18 20:35:36,060 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2022-11-18 20:35:36,060 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2022-11-18 20:35:36,062 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:36,062 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2022-11-18 20:35:36,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.3) internal successors, (843), 10 states have internal predecessors, (843), 0 states have call successors, (0), 0 states 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 20:35:36,069 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 20:35:36,069 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 20:35:36,070 INFO L175 Difference]: Start difference. First operand has 178 places, 165 transitions, 1172 flow. Second operand 10 states and 843 transitions. [2022-11-18 20:35:36,070 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 195 transitions, 1365 flow [2022-11-18 20:35:36,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 195 transitions, 1365 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:35:36,134 INFO L231 Difference]: Finished difference. Result has 190 places, 175 transitions, 1272 flow [2022-11-18 20:35:36,135 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1172, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=152, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1272, PETRI_PLACES=190, PETRI_TRANSITIONS=175} [2022-11-18 20:35:36,138 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 98 predicate places. [2022-11-18 20:35:36,138 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 175 transitions, 1272 flow [2022-11-18 20:35:36,139 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 20:35:36,139 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:36,140 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:36,151 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:36,345 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:36,346 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:36,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:36,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1667154814, now seen corresponding path program 2 times [2022-11-18 20:35:36,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:36,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [665257772] [2022-11-18 20:35:36,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:36,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:36,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:36,882 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:35:36,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:36,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [665257772] [2022-11-18 20:35:36,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [665257772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:36,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [909490070] [2022-11-18 20:35:36,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:35:36,884 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:36,884 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:36,885 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:36,911 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-18 20:35:36,993 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:35:36,993 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:36,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:35:36,997 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:37,237 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:35:37,237 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:37,443 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-18 20:35:37,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [909490070] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:37,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:37,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-18 20:35:37,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055558707] [2022-11-18 20:35:37,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:37,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-18 20:35:37,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:37,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-18 20:35:37,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-18 20:35:37,450 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-18 20:35:37,451 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 190 places, 175 transitions, 1272 flow. Second operand has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 20:35:37,451 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:37,452 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-18 20:35:37,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:38,800 INFO L130 PetriNetUnfolder]: 681/3850 cut-off events. [2022-11-18 20:35:38,800 INFO L131 PetriNetUnfolder]: For 19336/19880 co-relation queries the response was YES. [2022-11-18 20:35:38,947 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14309 conditions, 3850 events. 681/3850 cut-off events. For 19336/19880 co-relation queries the response was YES. Maximal size of possible extension queue 208. Compared 40273 event pairs, 146 based on Foata normal form. 90/3844 useless extension candidates. Maximal degree in co-relation 14260. Up to 563 conditions per place. [2022-11-18 20:35:38,968 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 37 selfloop transitions, 26 changer transitions 4/210 dead transitions. [2022-11-18 20:35:38,968 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 210 transitions, 1564 flow [2022-11-18 20:35:38,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-18 20:35:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-18 20:35:38,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 844 transitions. [2022-11-18 20:35:38,972 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8115384615384615 [2022-11-18 20:35:38,973 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 844 transitions. [2022-11-18 20:35:38,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 844 transitions. [2022-11-18 20:35:38,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:38,974 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 844 transitions. [2022-11-18 20:35:38,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 11 states, 10 states have (on average 84.4) internal successors, (844), 10 states have internal predecessors, (844), 0 states have call successors, (0), 0 states 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 20:35:38,978 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 20:35:38,979 INFO L81 ComplementDD]: Finished complementDD. Result has 11 states, 11 states have (on average 104.0) internal successors, (1144), 11 states have internal predecessors, (1144), 0 states have call successors, (0), 0 states 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 20:35:38,979 INFO L175 Difference]: Start difference. First operand has 190 places, 175 transitions, 1272 flow. Second operand 10 states and 844 transitions. [2022-11-18 20:35:38,980 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 210 transitions, 1564 flow [2022-11-18 20:35:39,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 210 transitions, 1493 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-11-18 20:35:39,063 INFO L231 Difference]: Finished difference. Result has 196 places, 190 transitions, 1401 flow [2022-11-18 20:35:39,064 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1237, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1401, PETRI_PLACES=196, PETRI_TRANSITIONS=190} [2022-11-18 20:35:39,065 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 104 predicate places. [2022-11-18 20:35:39,066 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 190 transitions, 1401 flow [2022-11-18 20:35:39,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 81.0) internal successors, (891), 11 states have internal predecessors, (891), 0 states have call successors, (0), 0 states 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 20:35:39,067 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:39,067 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:39,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:39,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:39,274 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:39,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:39,274 INFO L85 PathProgramCache]: Analyzing trace with hash 996052654, now seen corresponding path program 3 times [2022-11-18 20:35:39,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:39,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1898494735] [2022-11-18 20:35:39,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:39,275 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:39,839 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:39,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:39,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1898494735] [2022-11-18 20:35:39,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1898494735] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:39,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [39900868] [2022-11-18 20:35:39,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:35:39,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:39,840 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:39,843 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:39,863 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-18 20:35:39,984 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:35:39,984 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:39,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:35:39,988 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:40,234 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:40,235 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:40,422 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:40,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [39900868] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:40,423 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:40,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-18 20:35:40,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135559156] [2022-11-18 20:35:40,423 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:40,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:35:40,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:40,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:35:40,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:35:40,426 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-18 20:35:40,427 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 196 places, 190 transitions, 1401 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 20:35:40,427 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:40,428 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-18 20:35:40,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:42,701 INFO L130 PetriNetUnfolder]: 1211/6869 cut-off events. [2022-11-18 20:35:42,702 INFO L131 PetriNetUnfolder]: For 37015/37943 co-relation queries the response was YES. [2022-11-18 20:35:42,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25741 conditions, 6869 events. 1211/6869 cut-off events. For 37015/37943 co-relation queries the response was YES. Maximal size of possible extension queue 346. Compared 81742 event pairs, 169 based on Foata normal form. 163/6897 useless extension candidates. Maximal degree in co-relation 25689. Up to 840 conditions per place. [2022-11-18 20:35:42,798 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 48 selfloop transitions, 38 changer transitions 4/233 dead transitions. [2022-11-18 20:35:42,798 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 233 transitions, 1770 flow [2022-11-18 20:35:42,799 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:35:42,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:35:42,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 936 transitions. [2022-11-18 20:35:42,801 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-18 20:35:42,801 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 936 transitions. [2022-11-18 20:35:42,802 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 936 transitions. [2022-11-18 20:35:42,802 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:42,803 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 936 transitions. [2022-11-18 20:35:42,805 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 0 states have call successors, (0), 0 states 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 20:35:42,808 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:42,808 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:42,809 INFO L175 Difference]: Start difference. First operand has 196 places, 190 transitions, 1401 flow. Second operand 11 states and 936 transitions. [2022-11-18 20:35:42,809 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 233 transitions, 1770 flow [2022-11-18 20:35:42,974 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 233 transitions, 1737 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-11-18 20:35:42,978 INFO L231 Difference]: Finished difference. Result has 202 places, 205 transitions, 1580 flow [2022-11-18 20:35:42,979 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1382, PETRI_DIFFERENCE_MINUEND_PLACES=189, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=190, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=163, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1580, PETRI_PLACES=202, PETRI_TRANSITIONS=205} [2022-11-18 20:35:42,979 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 110 predicate places. [2022-11-18 20:35:42,979 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 205 transitions, 1580 flow [2022-11-18 20:35:42,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 20:35:42,980 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:42,980 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:42,996 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:43,191 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-18 20:35:43,192 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:43,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:43,192 INFO L85 PathProgramCache]: Analyzing trace with hash -183912038, now seen corresponding path program 4 times [2022-11-18 20:35:43,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:43,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568318254] [2022-11-18 20:35:43,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:43,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:43,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:43,633 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:43,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568318254] [2022-11-18 20:35:43,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1568318254] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:43,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177482742] [2022-11-18 20:35:43,633 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-18 20:35:43,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:43,634 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:43,635 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:43,659 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-18 20:35:43,744 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-18 20:35:43,744 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:43,746 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:35:43,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:44,097 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:44,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:44,240 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:44,241 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177482742] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:44,241 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:44,241 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-18 20:35:44,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164426032] [2022-11-18 20:35:44,242 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:44,242 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:35:44,242 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:44,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:35:44,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:35:44,244 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-18 20:35:44,245 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 202 places, 205 transitions, 1580 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 20:35:44,246 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:44,246 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-18 20:35:44,246 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:45,847 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([254] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][125], [Black: 4352#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 3761#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 4350#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 2558#true, 1400#(< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))), 617#true, 6#L94-4true, Black: 3161#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3162#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), 2553#(= (* (div ~d2~0 256) 256) ~d2~0), 4357#true, Black: 2217#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (<= (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div |thread1Thread1of1ForFork0_#t~post3| 4294967296) 4294967296) ~i2~0))), Black: 2231#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2229#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 2225#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1834#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2219#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1651#true, Black: 2233#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), 131#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), Black: 2221#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2235#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 2213#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2237#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 787#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i1~0 4294967296) 0)), 2407#(<= (mod ~d1~0 256) 0), Black: 631#true, 106#true, Black: 2562#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 603#true, 1646#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), 3757#true, Black: 592#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 282#(and (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i2~0 4294967296) 0)), Black: 126#true, Black: 594#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), 8#L51true, Black: 1327#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0)), 59#L70true, Black: 1111#(and (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296))), Black: 608#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)), Black: 1623#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 612#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 1106#true, Black: 607#(<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 1633#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (< (* (div (mod (+ ~i2~0 1) 4294967296) 2) 2) (+ (mod ~i1~0 4294967296) 1))), 3157#true, Black: 1627#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296))), Black: 1643#true, Black: 1645#(not (= (* (div ~d2~0 256) 256) ~d2~0)), Black: 2253#true, Black: 622#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)), 1660#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 2420#(= ~d1~0 1), Black: 624#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0))), Black: 113#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 2551#true, 636#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 2554#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0))]) [2022-11-18 20:35:45,847 INFO L383 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2022-11-18 20:35:45,847 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-18 20:35:45,847 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-18 20:35:45,847 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-18 20:35:46,366 INFO L130 PetriNetUnfolder]: 1265/7310 cut-off events. [2022-11-18 20:35:46,367 INFO L131 PetriNetUnfolder]: For 41962/43231 co-relation queries the response was YES. [2022-11-18 20:35:46,420 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28036 conditions, 7310 events. 1265/7310 cut-off events. For 41962/43231 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 88764 event pairs, 217 based on Foata normal form. 175/7335 useless extension candidates. Maximal degree in co-relation 27982. Up to 1130 conditions per place. [2022-11-18 20:35:46,451 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 58 selfloop transitions, 34 changer transitions 4/239 dead transitions. [2022-11-18 20:35:46,451 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 239 transitions, 1937 flow [2022-11-18 20:35:46,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:35:46,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:35:46,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2022-11-18 20:35:46,454 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8138111888111889 [2022-11-18 20:35:46,454 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2022-11-18 20:35:46,454 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2022-11-18 20:35:46,455 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:46,455 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2022-11-18 20:35:46,457 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.63636363636364) internal successors, (931), 11 states have internal predecessors, (931), 0 states have call successors, (0), 0 states 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 20:35:46,460 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:46,461 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:46,461 INFO L175 Difference]: Start difference. First operand has 202 places, 205 transitions, 1580 flow. Second operand 11 states and 931 transitions. [2022-11-18 20:35:46,461 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 239 transitions, 1937 flow [2022-11-18 20:35:46,636 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 239 transitions, 1865 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-11-18 20:35:46,640 INFO L231 Difference]: Finished difference. Result has 207 places, 213 transitions, 1692 flow [2022-11-18 20:35:46,641 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1530, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=175, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1692, PETRI_PLACES=207, PETRI_TRANSITIONS=213} [2022-11-18 20:35:46,641 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 115 predicate places. [2022-11-18 20:35:46,642 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 213 transitions, 1692 flow [2022-11-18 20:35:46,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 20:35:46,642 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:46,643 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:46,654 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:46,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-18 20:35:46,848 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:46,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:46,849 INFO L85 PathProgramCache]: Analyzing trace with hash -1715941782, now seen corresponding path program 5 times [2022-11-18 20:35:46,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:46,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905921265] [2022-11-18 20:35:46,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:46,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:46,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:47,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:47,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905921265] [2022-11-18 20:35:47,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905921265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:47,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1748505670] [2022-11-18 20:35:47,289 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-18 20:35:47,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:47,289 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:47,290 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:47,308 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-18 20:35:47,518 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-18 20:35:47,519 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:47,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:35:47,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:47,765 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:47,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:47,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1748505670] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:47,952 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:47,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-18 20:35:47,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461471334] [2022-11-18 20:35:47,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:35:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:47,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:35:47,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:35:47,955 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-18 20:35:47,957 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 207 places, 213 transitions, 1692 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 20:35:47,957 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:47,957 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-18 20:35:47,958 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:49,949 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([254] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][127], [Black: 3761#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 4957#true, 2558#true, 617#true, 6#L94-4true, Black: 3161#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3162#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), 4357#true, Black: 2217#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (<= (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div |thread1Thread1of1ForFork0_#t~post3| 4294967296) 4294967296) ~i2~0))), Black: 2231#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), 1327#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0)), Black: 2229#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 2225#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1834#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2219#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1651#true, Black: 2233#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 2221#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), 131#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), Black: 2235#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 2213#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2237#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 787#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i1~0 4294967296) 0)), Black: 631#true, 2407#(<= (mod ~d1~0 256) 0), 106#true, 1645#(not (= (* (div ~d2~0 256) 256) ~d2~0)), 603#true, Black: 592#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), 3757#true, Black: 282#(and (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i2~0 4294967296) 0)), Black: 126#true, Black: 4952#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 594#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 4361#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 4950#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L51true, 59#L70true, Black: 1111#(and (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296))), Black: 608#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)), Black: 1623#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 612#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 607#(<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 1106#true, Black: 1633#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (< (* (div (mod (+ ~i2~0 1) 4294967296) 2) 2) (+ (mod ~i1~0 4294967296) 1))), 3157#true, Black: 1627#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296))), Black: 1643#true, Black: 1646#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), 1660#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 622#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)), Black: 2253#true, Black: 624#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0))), Black: 2420#(= ~d1~0 1), 2554#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0)), Black: 113#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 2551#true, 636#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))))]) [2022-11-18 20:35:49,949 INFO L383 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2022-11-18 20:35:49,949 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-18 20:35:49,949 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-18 20:35:49,950 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-11-18 20:35:49,986 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([254] L49-->L51: Formula: (= v_~pos~0_18 (+ v_~pos~0_17 1)) InVars {~pos~0=v_~pos~0_18} OutVars{thread1Thread1of1ForFork0_#t~post2=|v_thread1Thread1of1ForFork0_#t~post2_1|, ~pos~0=v_~pos~0_17} AuxVars[] AssignedVars[thread1Thread1of1ForFork0_#t~post2, ~pos~0][127], [Black: 3761#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), 4957#true, 2558#true, 1400#(< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))), 617#true, 6#L94-4true, Black: 3161#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 3162#(<= (+ ~pos~0 1) (* (div (+ ~pos~0 1) 4294967296) 4294967296)), 2553#(= (* (div ~d2~0 256) 256) ~d2~0), 4357#true, Black: 2217#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1)) (<= (+ |thread1Thread1of1ForFork0_#t~post3| (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div |thread1Thread1of1ForFork0_#t~post3| 4294967296) 4294967296) ~i2~0))), Black: 2231#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2229#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 2225#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1834#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648)))), Black: 2219#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ ~i2~0 (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), Black: 1651#true, Black: 2233#(and (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)) (<= (+ ~i1~0 (* (div (+ |thread2Thread1of1ForFork1_#t~post4| 4294967295) 4294967296) 4294967296)) (+ |thread2Thread1of1ForFork1_#t~post4| (* (div (+ (- 1) ~i1~0) 4294967296) 4294967296) 1))), 131#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0 1) (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296))), Black: 2221#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2235#(and (= (mod |thread1Thread1of1ForFork0_#t~post3| 4294967296) 0) (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 2213#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i1~0 4294967296) 0)), Black: 2237#(and (= (mod (+ 4294967295 ~i1~0) 4294967296) 0) (< (mod (+ 4294967295 ~i1~0) 4294967296) (* 2 (mod ~N~0 2147483648))) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 787#(and (< (mod ~i1~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i1~0 4294967296) 0)), Black: 631#true, 2407#(<= (mod ~d1~0 256) 0), 106#true, 603#true, Black: 592#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), 3757#true, 1646#(and (<= ~d2~0 (* (div ~d2~0 256) 256)) (<= 0 ~d2~0)), Black: 282#(and (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (= (mod ~i2~0 4294967296) 0)), Black: 126#true, Black: 4952#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 594#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (mod ~i2~0 4294967296) (* 2 (mod ~N~0 2147483648))) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 4361#(<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 4950#(and (<= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 8#L51true, Black: 1327#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0)), 59#L70true, Black: 1111#(and (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= ~i2~0 (* (div ~i2~0 4294967296) 4294967296))), Black: 608#(<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)), Black: 1623#(and (= (mod ~i2~0 4294967296) (mod ~i1~0 4294967296)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (or (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)) (or (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 1) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0)) (= (mod ~i2~0 4294967296) 0)), Black: 612#(and (<= (+ (* 2 ~N~0) (* (div ~i2~0 4294967296) 4294967296)) (+ (* (div ~N~0 2147483648) 4294967296) ~i2~0)) (<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0))), Black: 607#(<= (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0) (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0)), Black: 1106#true, Black: 1633#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (< (* (div (mod (+ ~i2~0 1) 4294967296) 2) 2) (+ (mod ~i1~0 4294967296) 1))), 3157#true, Black: 1627#(and (<= ~i2~0 (+ (* (div (+ (- 1) ~i2~0) 4294967296) 4294967296) 1)) (< (* (div ~N~0 2147483648) 2147483648) ~N~0) (<= |thread2Thread1of1ForFork1_#t~post4| (* (div |thread2Thread1of1ForFork1_#t~post4| 4294967296) 4294967296))), Black: 1643#true, Black: 1645#(not (= (* (div ~d2~0 256) 256) ~d2~0)), 1660#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 622#(<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)), Black: 2253#true, Black: 624#(and (<= (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296))) (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0)) (<= (+ (* 4294967296 (div ~i1~0 4294967296)) ~i2~0) (+ (* (div ~i2~0 4294967296) 4294967296) ~i1~0))), Black: 2420#(= ~d1~0 1), Black: 113#(= ~pos~0 (* 4294967296 (div ~pos~0 4294967296))), Black: 2551#true, 636#(<= (+ (* (div ~N~0 2147483648) 4294967296) ~i1~0 1) (+ (* 2 ~N~0) (* 4294967296 (div ~i1~0 4294967296)))), Black: 2554#(and (<= (div ~d2~0 256) 0) (<= 1 ~d2~0))]) [2022-11-18 20:35:49,986 INFO L383 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-11-18 20:35:49,986 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-18 20:35:49,986 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-18 20:35:49,986 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-18 20:35:50,586 INFO L130 PetriNetUnfolder]: 1661/9687 cut-off events. [2022-11-18 20:35:50,586 INFO L131 PetriNetUnfolder]: For 57554/59094 co-relation queries the response was YES. [2022-11-18 20:35:50,661 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37173 conditions, 9687 events. 1661/9687 cut-off events. For 57554/59094 co-relation queries the response was YES. Maximal size of possible extension queue 503. Compared 123439 event pairs, 264 based on Foata normal form. 313/9819 useless extension candidates. Maximal degree in co-relation 37118. Up to 1219 conditions per place. [2022-11-18 20:35:50,699 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 65 selfloop transitions, 50 changer transitions 4/262 dead transitions. [2022-11-18 20:35:50,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 262 transitions, 2225 flow [2022-11-18 20:35:50,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:35:50,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:35:50,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 934 transitions. [2022-11-18 20:35:50,702 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8164335664335665 [2022-11-18 20:35:50,702 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 934 transitions. [2022-11-18 20:35:50,702 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 934 transitions. [2022-11-18 20:35:50,703 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:50,703 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 934 transitions. [2022-11-18 20:35:50,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 84.9090909090909) internal successors, (934), 11 states have internal predecessors, (934), 0 states have call successors, (0), 0 states 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 20:35:50,726 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:50,727 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:50,727 INFO L175 Difference]: Start difference. First operand has 207 places, 213 transitions, 1692 flow. Second operand 11 states and 934 transitions. [2022-11-18 20:35:50,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 262 transitions, 2225 flow [2022-11-18 20:35:51,044 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 262 transitions, 2178 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-18 20:35:51,050 INFO L231 Difference]: Finished difference. Result has 215 places, 235 transitions, 2045 flow [2022-11-18 20:35:51,050 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=1659, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=213, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=172, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2045, PETRI_PLACES=215, PETRI_TRANSITIONS=235} [2022-11-18 20:35:51,051 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 123 predicate places. [2022-11-18 20:35:51,051 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 235 transitions, 2045 flow [2022-11-18 20:35:51,052 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 20:35:51,052 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:51,052 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:51,064 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:51,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-18 20:35:51,258 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:51,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:51,259 INFO L85 PathProgramCache]: Analyzing trace with hash 1683122846, now seen corresponding path program 6 times [2022-11-18 20:35:51,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:51,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2118819266] [2022-11-18 20:35:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:51,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:51,703 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:51,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:51,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2118819266] [2022-11-18 20:35:51,703 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2118819266] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:51,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386277840] [2022-11-18 20:35:51,704 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-18 20:35:51,704 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:51,704 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:51,705 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:51,713 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-18 20:35:51,856 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-18 20:35:51,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:35:51,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-18 20:35:51,860 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:35:52,113 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:52,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:35:52,288 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-18 20:35:52,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386277840] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:35:52,288 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:35:52,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-18 20:35:52,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [966466146] [2022-11-18 20:35:52,289 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:35:52,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-18 20:35:52,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:52,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-18 20:35:52,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-18 20:35:52,292 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-18 20:35:52,293 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 235 transitions, 2045 flow. Second operand has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 20:35:52,293 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:52,293 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-18 20:35:52,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:55,893 INFO L130 PetriNetUnfolder]: 2301/13126 cut-off events. [2022-11-18 20:35:55,893 INFO L131 PetriNetUnfolder]: For 85518/87745 co-relation queries the response was YES. [2022-11-18 20:35:56,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51906 conditions, 13126 events. 2301/13126 cut-off events. For 85518/87745 co-relation queries the response was YES. Maximal size of possible extension queue 644. Compared 175106 event pairs, 416 based on Foata normal form. 384/13267 useless extension candidates. Maximal degree in co-relation 51847. Up to 1872 conditions per place. [2022-11-18 20:35:56,247 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 105 selfloop transitions, 46 changer transitions 4/298 dead transitions. [2022-11-18 20:35:56,247 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 298 transitions, 2812 flow [2022-11-18 20:35:56,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-18 20:35:56,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-18 20:35:56,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 936 transitions. [2022-11-18 20:35:56,253 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-18 20:35:56,253 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 936 transitions. [2022-11-18 20:35:56,254 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 936 transitions. [2022-11-18 20:35:56,254 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:56,255 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 936 transitions. [2022-11-18 20:35:56,257 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 85.0909090909091) internal successors, (936), 11 states have internal predecessors, (936), 0 states have call successors, (0), 0 states 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 20:35:56,260 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:56,260 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 104.0) internal successors, (1248), 12 states have internal predecessors, (1248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-18 20:35:56,261 INFO L175 Difference]: Start difference. First operand has 215 places, 235 transitions, 2045 flow. Second operand 11 states and 936 transitions. [2022-11-18 20:35:56,261 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 298 transitions, 2812 flow [2022-11-18 20:35:56,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 298 transitions, 2753 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-11-18 20:35:56,613 INFO L231 Difference]: Finished difference. Result has 223 places, 270 transitions, 2551 flow [2022-11-18 20:35:56,614 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2000, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=235, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=198, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2551, PETRI_PLACES=223, PETRI_TRANSITIONS=270} [2022-11-18 20:35:56,615 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 131 predicate places. [2022-11-18 20:35:56,615 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 270 transitions, 2551 flow [2022-11-18 20:35:56,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 80.83333333333333) internal successors, (970), 12 states have internal predecessors, (970), 0 states have call successors, (0), 0 states 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 20:35:56,616 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:56,616 INFO L209 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:56,627 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-18 20:35:56,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-11-18 20:35:56,822 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1996064928, now seen corresponding path program 1 times [2022-11-18 20:35:56,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:56,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2125985118] [2022-11-18 20:35:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:56,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:56,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:57,019 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-18 20:35:57,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:57,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2125985118] [2022-11-18 20:35:57,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2125985118] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-18 20:35:57,020 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-18 20:35:57,020 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-18 20:35:57,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754537479] [2022-11-18 20:35:57,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-18 20:35:57,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-18 20:35:57,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:35:57,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-18 20:35:57,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-18 20:35:57,023 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-18 20:35:57,023 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 270 transitions, 2551 flow. Second operand has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 20:35:57,023 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:35:57,024 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-18 20:35:57,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:35:58,708 INFO L130 PetriNetUnfolder]: 777/5959 cut-off events. [2022-11-18 20:35:58,708 INFO L131 PetriNetUnfolder]: For 36749/37490 co-relation queries the response was YES. [2022-11-18 20:35:58,776 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24116 conditions, 5959 events. 777/5959 cut-off events. For 36749/37490 co-relation queries the response was YES. Maximal size of possible extension queue 268. Compared 70957 event pairs, 95 based on Foata normal form. 154/6066 useless extension candidates. Maximal degree in co-relation 24053. Up to 517 conditions per place. [2022-11-18 20:35:58,791 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 62 selfloop transitions, 6 changer transitions 0/256 dead transitions. [2022-11-18 20:35:58,791 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 256 transitions, 2464 flow [2022-11-18 20:35:58,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-18 20:35:58,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-18 20:35:58,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2022-11-18 20:35:58,793 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8966346153846154 [2022-11-18 20:35:58,793 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2022-11-18 20:35:58,794 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2022-11-18 20:35:58,794 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:35:58,794 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2022-11-18 20:35:58,795 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 93.25) internal successors, (373), 4 states have internal predecessors, (373), 0 states have call successors, (0), 0 states 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 20:35:58,796 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 20:35:58,797 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 104.0) internal successors, (520), 5 states have internal predecessors, (520), 0 states have call successors, (0), 0 states 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 20:35:58,797 INFO L175 Difference]: Start difference. First operand has 223 places, 270 transitions, 2551 flow. Second operand 4 states and 373 transitions. [2022-11-18 20:35:58,797 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 256 transitions, 2464 flow [2022-11-18 20:35:58,940 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 256 transitions, 2397 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-11-18 20:35:58,944 INFO L231 Difference]: Finished difference. Result has 220 places, 249 transitions, 2246 flow [2022-11-18 20:35:58,944 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2210, PETRI_DIFFERENCE_MINUEND_PLACES=215, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=247, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=241, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=2246, PETRI_PLACES=220, PETRI_TRANSITIONS=249} [2022-11-18 20:35:58,945 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 128 predicate places. [2022-11-18 20:35:58,945 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 249 transitions, 2246 flow [2022-11-18 20:35:58,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 91.0) internal successors, (364), 4 states have internal predecessors, (364), 0 states have call successors, (0), 0 states 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 20:35:58,946 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:35:58,946 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:35:58,946 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-18 20:35:58,946 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:35:58,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:35:58,947 INFO L85 PathProgramCache]: Analyzing trace with hash 142894895, now seen corresponding path program 7 times [2022-11-18 20:35:58,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:35:58,947 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2081777318] [2022-11-18 20:35:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:35:58,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:35:58,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:35:59,789 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:35:59,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:35:59,789 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2081777318] [2022-11-18 20:35:59,789 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2081777318] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:35:59,790 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1063798343] [2022-11-18 20:35:59,790 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-18 20:35:59,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:35:59,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:35:59,791 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:35:59,815 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-18 20:36:00,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:36:00,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-18 20:36:00,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:36:00,895 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:36:00,896 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:36:02,156 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-18 20:36:02,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1063798343] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:36:02,157 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:36:02,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 35 [2022-11-18 20:36:02,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595459484] [2022-11-18 20:36:02,158 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:36:02,158 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-18 20:36:02,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:36:02,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-18 20:36:02,159 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2022-11-18 20:36:02,176 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 104 [2022-11-18 20:36:02,179 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 249 transitions, 2246 flow. Second operand has 35 states, 35 states have (on average 66.0) internal successors, (2310), 35 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states 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 20:36:02,179 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:36:02,179 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 104 [2022-11-18 20:36:02,179 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:37:56,340 INFO L130 PetriNetUnfolder]: 8382/24198 cut-off events. [2022-11-18 20:37:56,341 INFO L131 PetriNetUnfolder]: For 191267/191267 co-relation queries the response was YES. [2022-11-18 20:37:56,575 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116309 conditions, 24198 events. 8382/24198 cut-off events. For 191267/191267 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 282544 event pairs, 368 based on Foata normal form. 722/24840 useless extension candidates. Maximal degree in co-relation 116247. Up to 2550 conditions per place. [2022-11-18 20:37:56,662 INFO L137 encePairwiseOnDemand]: 83/104 looper letters, 1569 selfloop transitions, 295 changer transitions 0/1927 dead transitions. [2022-11-18 20:37:56,662 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1927 transitions, 23513 flow [2022-11-18 20:37:56,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-18 20:37:56,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2022-11-18 20:37:56,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 8801 transitions. [2022-11-18 20:37:56,681 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6611328125 [2022-11-18 20:37:56,681 INFO L72 ComplementDD]: Start complementDD. Operand 128 states and 8801 transitions. [2022-11-18 20:37:56,681 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 8801 transitions. [2022-11-18 20:37:56,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:37:56,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 128 states and 8801 transitions. [2022-11-18 20:37:56,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 129 states, 128 states have (on average 68.7578125) internal successors, (8801), 128 states have internal predecessors, (8801), 0 states have call successors, (0), 0 states 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 20:37:56,724 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 129 states, 129 states have (on average 104.0) internal successors, (13416), 129 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states 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 20:37:56,730 INFO L81 ComplementDD]: Finished complementDD. Result has 129 states, 129 states have (on average 104.0) internal successors, (13416), 129 states have internal predecessors, (13416), 0 states have call successors, (0), 0 states 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 20:37:56,730 INFO L175 Difference]: Start difference. First operand has 220 places, 249 transitions, 2246 flow. Second operand 128 states and 8801 transitions. [2022-11-18 20:37:56,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1927 transitions, 23513 flow [2022-11-18 20:37:57,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1927 transitions, 23513 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-18 20:37:57,651 INFO L231 Difference]: Finished difference. Result has 416 places, 493 transitions, 5745 flow [2022-11-18 20:37:57,652 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=2246, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=249, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=184, PETRI_DIFFERENCE_SUBTRAHEND_STATES=128, PETRI_FLOW=5745, PETRI_PLACES=416, PETRI_TRANSITIONS=493} [2022-11-18 20:37:57,653 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 324 predicate places. [2022-11-18 20:37:57,653 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 493 transitions, 5745 flow [2022-11-18 20:37:57,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 66.0) internal successors, (2310), 35 states have internal predecessors, (2310), 0 states have call successors, (0), 0 states 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 20:37:57,654 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:37:57,654 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:37:57,663 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-18 20:37:57,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:57,860 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:37:57,861 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:37:57,861 INFO L85 PathProgramCache]: Analyzing trace with hash -527144562, now seen corresponding path program 8 times [2022-11-18 20:37:57,861 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:37:57,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090691519] [2022-11-18 20:37:57,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:37:57,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:37:57,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:37:58,471 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:58,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:37:58,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090691519] [2022-11-18 20:37:58,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090691519] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:37:58,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1740479513] [2022-11-18 20:37:58,471 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-18 20:37:58,472 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:37:58,472 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:37:58,479 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:37:58,483 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-18 20:37:58,689 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-18 20:37:58,689 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:37:58,691 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-18 20:37:58,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:37:59,810 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:37:59,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:38:20,588 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:38:20,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1740479513] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:38:20,588 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:38:20,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-11-18 20:38:20,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175014713] [2022-11-18 20:38:20,589 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:38:20,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-18 20:38:20,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:38:20,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-18 20:38:20,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1196, Unknown=3, NotChecked=0, Total=1332 [2022-11-18 20:38:20,593 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-18 20:38:20,596 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 416 places, 493 transitions, 5745 flow. Second operand has 37 states, 37 states have (on average 69.48648648648648) internal successors, (2571), 37 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states 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 20:38:20,596 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:38:20,596 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-18 20:38:20,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:38:39,093 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:13,193 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:33,611 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:39:49,173 WARN L233 SmtUtils]: Spent 7.92s on a formula simplification. DAG size of input: 102 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:40:26,111 WARN L233 SmtUtils]: Spent 15.04s on a formula simplification. DAG size of input: 107 DAG size of output: 47 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-18 20:40:50,838 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:42:00,091 INFO L130 PetriNetUnfolder]: 11431/35280 cut-off events. [2022-11-18 20:42:00,091 INFO L131 PetriNetUnfolder]: For 1028781/1029373 co-relation queries the response was YES. [2022-11-18 20:42:00,837 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262410 conditions, 35280 events. 11431/35280 cut-off events. For 1028781/1029373 co-relation queries the response was YES. Maximal size of possible extension queue 1066. Compared 442016 event pairs, 1536 based on Foata normal form. 274/35198 useless extension candidates. Maximal degree in co-relation 262278. Up to 12952 conditions per place. [2022-11-18 20:42:01,004 INFO L137 encePairwiseOnDemand]: 84/104 looper letters, 772 selfloop transitions, 361 changer transitions 121/1362 dead transitions. [2022-11-18 20:42:01,004 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 494 places, 1362 transitions, 19418 flow [2022-11-18 20:42:01,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 79 states. [2022-11-18 20:42:01,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2022-11-18 20:42:01,012 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 5627 transitions. [2022-11-18 20:42:01,019 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6848831548198637 [2022-11-18 20:42:01,019 INFO L72 ComplementDD]: Start complementDD. Operand 79 states and 5627 transitions. [2022-11-18 20:42:01,019 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 5627 transitions. [2022-11-18 20:42:01,022 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-18 20:42:01,022 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 79 states and 5627 transitions. [2022-11-18 20:42:01,032 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 80 states, 79 states have (on average 71.22784810126582) internal successors, (5627), 79 states have internal predecessors, (5627), 0 states have call successors, (0), 0 states 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 20:42:01,045 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 80 states, 80 states have (on average 104.0) internal successors, (8320), 80 states have internal predecessors, (8320), 0 states have call successors, (0), 0 states 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 20:42:01,048 INFO L81 ComplementDD]: Finished complementDD. Result has 80 states, 80 states have (on average 104.0) internal successors, (8320), 80 states have internal predecessors, (8320), 0 states have call successors, (0), 0 states 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 20:42:01,049 INFO L175 Difference]: Start difference. First operand has 416 places, 493 transitions, 5745 flow. Second operand 79 states and 5627 transitions. [2022-11-18 20:42:01,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 494 places, 1362 transitions, 19418 flow [2022-11-18 20:42:08,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 471 places, 1362 transitions, 17248 flow, removed 802 selfloop flow, removed 23 redundant places. [2022-11-18 20:42:08,218 INFO L231 Difference]: Finished difference. Result has 504 places, 781 transitions, 10274 flow [2022-11-18 20:42:08,219 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=4672, PETRI_DIFFERENCE_MINUEND_PLACES=393, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=493, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=132, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=79, PETRI_FLOW=10274, PETRI_PLACES=504, PETRI_TRANSITIONS=781} [2022-11-18 20:42:08,219 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 412 predicate places. [2022-11-18 20:42:08,219 INFO L495 AbstractCegarLoop]: Abstraction has has 504 places, 781 transitions, 10274 flow [2022-11-18 20:42:08,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 37 states have (on average 69.48648648648648) internal successors, (2571), 37 states have internal predecessors, (2571), 0 states have call successors, (0), 0 states 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 20:42:08,221 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-18 20:42:08,221 INFO L209 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-18 20:42:08,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-18 20:42:08,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:08,428 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-18 20:42:08,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-18 20:42:08,428 INFO L85 PathProgramCache]: Analyzing trace with hash -342057850, now seen corresponding path program 9 times [2022-11-18 20:42:08,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-18 20:42:08,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325920630] [2022-11-18 20:42:08,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-18 20:42:08,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-18 20:42:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-18 20:42:09,145 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-18 20:42:09,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-18 20:42:09,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325920630] [2022-11-18 20:42:09,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325920630] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-18 20:42:09,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127669820] [2022-11-18 20:42:09,146 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-18 20:42:09,146 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-18 20:42:09,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 [2022-11-18 20:42:09,148 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-18 20:42:09,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9e05e9df-8db0-46c6-9367-58075b8e94bf/bin/uautomizer-TMbwUNV5ro/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-18 20:42:09,502 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-18 20:42:09,502 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-18 20:42:09,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-18 20:42:09,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-18 20:42:10,531 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:42:10,531 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-18 20:42:13,160 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-18 20:42:13,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127669820] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-18 20:42:13,161 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-18 20:42:13,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 13, 13] total 36 [2022-11-18 20:42:13,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254524777] [2022-11-18 20:42:13,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-18 20:42:13,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-11-18 20:42:13,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-18 20:42:13,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-11-18 20:42:13,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1137, Unknown=0, NotChecked=0, Total=1260 [2022-11-18 20:42:13,165 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-18 20:42:13,168 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 504 places, 781 transitions, 10274 flow. Second operand has 36 states, 36 states have (on average 69.72222222222223) internal successors, (2510), 36 states have internal predecessors, (2510), 0 states have call successors, (0), 0 states 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 20:42:13,168 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-18 20:42:13,168 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-18 20:42:13,169 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-18 20:43:20,275 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.17s for a HTC check with result INVALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-18 20:43:22,621 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers []