./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 6b4ec56b 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_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN --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-6b4ec56 [2022-11-20 09:28:36,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-20 09:28:36,115 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-20 09:28:36,156 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-20 09:28:36,157 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-20 09:28:36,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-20 09:28:36,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-20 09:28:36,166 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-20 09:28:36,167 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-20 09:28:36,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-20 09:28:36,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-20 09:28:36,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-20 09:28:36,171 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-20 09:28:36,172 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-20 09:28:36,173 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-20 09:28:36,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-20 09:28:36,180 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-20 09:28:36,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-20 09:28:36,188 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-20 09:28:36,196 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-20 09:28:36,199 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-20 09:28:36,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-20 09:28:36,204 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-20 09:28:36,205 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-20 09:28:36,215 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-20 09:28:36,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-20 09:28:36,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-20 09:28:36,218 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-20 09:28:36,219 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-20 09:28:36,220 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-20 09:28:36,220 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-20 09:28:36,221 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-20 09:28:36,223 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-20 09:28:36,225 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-20 09:28:36,227 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-20 09:28:36,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-20 09:28:36,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-20 09:28:36,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-20 09:28:36,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-20 09:28:36,231 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-20 09:28:36,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-20 09:28:36,232 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-20 09:28:36,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-20 09:28:36,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-20 09:28:36,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-20 09:28:36,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-20 09:28:36,272 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-20 09:28:36,272 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-20 09:28:36,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-20 09:28:36,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-20 09:28:36,274 INFO L138 SettingsManager]: * Use SBE=true [2022-11-20 09:28:36,274 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-20 09:28:36,275 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-20 09:28:36,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-20 09:28:36,276 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-20 09:28:36,276 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-20 09:28:36,276 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-20 09:28:36,276 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-20 09:28:36,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-20 09:28:36,277 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-20 09:28:36,277 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-20 09:28:36,277 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-20 09:28:36,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-20 09:28:36,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-20 09:28:36,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-20 09:28:36,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-20 09:28:36,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:36,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-20 09:28:36,279 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-20 09:28:36,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-20 09:28:36,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-20 09:28:36,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-20 09:28:36,279 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-20 09:28:36,280 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-20 09:28:36,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-20 09:28:36,280 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_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c245694d80bb36f575f27eb50fa261b26ec38a4ced597397981ad6c6c7486707 [2022-11-20 09:28:36,588 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-20 09:28:36,610 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-20 09:28:36,613 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-20 09:28:36,614 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-20 09:28:36,615 INFO L275 PluginConnector]: CDTParser initialized [2022-11-20 09:28:36,616 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/../../sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2022-11-20 09:28:39,573 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-20 09:28:39,833 INFO L351 CDTParser]: Found 1 translation units. [2022-11-20 09:28:39,833 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c [2022-11-20 09:28:39,849 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/data/9caa2459c/cccb73e31be14fd0a5dd456454954eab/FLAG0db0d3c55 [2022-11-20 09:28:39,884 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/data/9caa2459c/cccb73e31be14fd0a5dd456454954eab [2022-11-20 09:28:39,887 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-20 09:28:39,888 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-20 09:28:39,890 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:39,890 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-20 09:28:39,906 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-20 09:28:39,907 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:39" (1/1) ... [2022-11-20 09:28:39,915 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@722fea71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:39, skipping insertion in model container [2022-11-20 09:28:39,915 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 09:28:39" (1/1) ... [2022-11-20 09:28:39,923 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-20 09:28:39,970 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-20 09:28:40,137 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-11-20 09:28:40,142 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:40,151 INFO L203 MainTranslator]: Completed pre-run [2022-11-20 09:28:40,181 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/sv-benchmarks/c/weaver/parallel-misc-2.wvr.c[2554,2567] [2022-11-20 09:28:40,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-20 09:28:40,196 INFO L208 MainTranslator]: Completed translation [2022-11-20 09:28:40,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40 WrapperNode [2022-11-20 09:28:40,196 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-20 09:28:40,197 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:40,197 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-20 09:28:40,198 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-20 09:28:40,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,237 INFO L138 Inliner]: procedures = 21, calls = 28, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 66 [2022-11-20 09:28:40,238 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-20 09:28:40,238 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-20 09:28:40,239 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-20 09:28:40,239 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-20 09:28:40,246 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,246 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,248 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,248 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,253 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,258 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,259 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,261 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-20 09:28:40,262 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-20 09:28:40,262 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-20 09:28:40,262 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-20 09:28:40,263 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (1/1) ... [2022-11-20 09:28:40,269 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-20 09:28:40,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:40,294 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-20 09:28:40,304 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-20 09:28:40,341 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-20 09:28:40,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-20 09:28:40,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-20 09:28:40,342 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-20 09:28:40,342 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-20 09:28:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-20 09:28:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-20 09:28:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-20 09:28:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2022-11-20 09:28:40,343 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2022-11-20 09:28:40,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-20 09:28:40,344 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-20 09:28:40,344 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-20 09:28:40,344 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-20 09:28:40,346 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-20 09:28:40,439 INFO L235 CfgBuilder]: Building ICFG [2022-11-20 09:28:40,441 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-20 09:28:40,725 INFO L276 CfgBuilder]: Performing block encoding [2022-11-20 09:28:40,760 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-20 09:28:40,760 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2022-11-20 09:28:40,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:40 BoogieIcfgContainer [2022-11-20 09:28:40,764 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-20 09:28:40,767 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-20 09:28:40,769 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-20 09:28:40,773 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-20 09:28:40,773 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 09:28:39" (1/3) ... [2022-11-20 09:28:40,775 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdcfb55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:40, skipping insertion in model container [2022-11-20 09:28:40,775 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 09:28:40" (2/3) ... [2022-11-20 09:28:40,776 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1bdcfb55 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 09:28:40, skipping insertion in model container [2022-11-20 09:28:40,776 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:40" (3/3) ... [2022-11-20 09:28:40,778 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-2.wvr.c [2022-11-20 09:28:40,785 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-20 09:28:40,794 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-20 09:28:40,794 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-20 09:28:40,794 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-20 09:28:40,865 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2022-11-20 09:28:40,908 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 104 transitions, 224 flow [2022-11-20 09:28:40,970 INFO L130 PetriNetUnfolder]: 8/102 cut-off events. [2022-11-20 09:28:40,970 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:28:40,977 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. [2022-11-20 09:28:40,977 INFO L82 GeneralOperation]: Start removeDead. Operand has 103 places, 104 transitions, 224 flow [2022-11-20 09:28:40,982 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 92 places, 93 transitions, 198 flow [2022-11-20 09:28:40,994 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-20 09:28:41,001 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;@21b763cf, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-20 09:28:41,001 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2022-11-20 09:28:41,033 INFO L130 PetriNetUnfolder]: 8/92 cut-off events. [2022-11-20 09:28:41,033 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2022-11-20 09:28:41,034 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:41,035 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] [2022-11-20 09:28:41,035 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:41,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:41,041 INFO L85 PathProgramCache]: Analyzing trace with hash -323220788, now seen corresponding path program 1 times [2022-11-20 09:28:41,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:41,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750130389] [2022-11-20 09:28:41,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:41,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:41,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:41,279 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:41,279 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:41,280 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750130389] [2022-11-20 09:28:41,280 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750130389] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:41,281 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:41,281 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-20 09:28:41,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1648453989] [2022-11-20 09:28:41,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:41,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-20 09:28:41,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:41,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-20 09:28:41,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-20 09:28:41,354 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 104 [2022-11-20 09:28:41,358 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) [2022-11-20 09:28:41,358 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:41,358 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 104 [2022-11-20 09:28:41,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:41,468 INFO L130 PetriNetUnfolder]: 7/96 cut-off events. [2022-11-20 09:28:41,468 INFO L131 PetriNetUnfolder]: For 10/11 co-relation queries the response was YES. [2022-11-20 09:28:41,469 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. [2022-11-20 09:28:41,470 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 6 selfloop transitions, 0 changer transitions 2/89 dead transitions. [2022-11-20 09:28:41,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 89 transitions, 202 flow [2022-11-20 09:28:41,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-20 09:28:41,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2022-11-20 09:28:41,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 196 transitions. [2022-11-20 09:28:41,490 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9423076923076923 [2022-11-20 09:28:41,492 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 196 transitions. [2022-11-20 09:28:41,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 196 transitions. [2022-11-20 09:28:41,494 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:41,497 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 196 transitions. [2022-11-20 09:28:41,503 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) [2022-11-20 09:28:41,510 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) [2022-11-20 09:28:41,510 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) [2022-11-20 09:28:41,512 INFO L175 Difference]: Start difference. First operand has 92 places, 93 transitions, 198 flow. Second operand 2 states and 196 transitions. [2022-11-20 09:28:41,514 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 89 transitions, 202 flow [2022-11-20 09:28:41,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 89 transitions, 194 flow, removed 0 selfloop flow, removed 4 redundant places. [2022-11-20 09:28:41,523 INFO L231 Difference]: Finished difference. Result has 89 places, 87 transitions, 178 flow [2022-11-20 09:28:41,525 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} [2022-11-20 09:28:41,531 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, -3 predicate places. [2022-11-20 09:28:41,532 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 87 transitions, 178 flow [2022-11-20 09:28:41,532 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) [2022-11-20 09:28:41,532 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:41,533 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] [2022-11-20 09:28:41,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-20 09:28:41,534 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:41,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:41,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1147510984, now seen corresponding path program 1 times [2022-11-20 09:28:41,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:41,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269095489] [2022-11-20 09:28:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:41,537 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:41,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:42,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:42,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:42,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269095489] [2022-11-20 09:28:42,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269095489] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:42,227 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:42,227 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-20 09:28:42,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895431573] [2022-11-20 09:28:42,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:42,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-20 09:28:42,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:42,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-20 09:28:42,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-11-20 09:28:42,232 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-20 09:28:42,234 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) [2022-11-20 09:28:42,234 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:42,234 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-20 09:28:42,239 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:42,466 INFO L130 PetriNetUnfolder]: 21/139 cut-off events. [2022-11-20 09:28:42,466 INFO L131 PetriNetUnfolder]: For 6/7 co-relation queries the response was YES. [2022-11-20 09:28:42,469 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. [2022-11-20 09:28:42,471 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 15 selfloop transitions, 9 changer transitions 4/97 dead transitions. [2022-11-20 09:28:42,471 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 97 transitions, 257 flow [2022-11-20 09:28:42,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:42,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:42,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 582 transitions. [2022-11-20 09:28:42,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7994505494505495 [2022-11-20 09:28:42,479 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 582 transitions. [2022-11-20 09:28:42,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 582 transitions. [2022-11-20 09:28:42,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:42,480 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 582 transitions. [2022-11-20 09:28:42,483 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) [2022-11-20 09:28:42,487 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) [2022-11-20 09:28:42,488 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) [2022-11-20 09:28:42,488 INFO L175 Difference]: Start difference. First operand has 89 places, 87 transitions, 178 flow. Second operand 7 states and 582 transitions. [2022-11-20 09:28:42,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 97 transitions, 257 flow [2022-11-20 09:28:42,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 93 places, 97 transitions, 257 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:28:42,516 INFO L231 Difference]: Finished difference. Result has 96 places, 91 transitions, 225 flow [2022-11-20 09:28:42,517 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} [2022-11-20 09:28:42,518 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 4 predicate places. [2022-11-20 09:28:42,518 INFO L495 AbstractCegarLoop]: Abstraction has has 96 places, 91 transitions, 225 flow [2022-11-20 09:28:42,518 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) [2022-11-20 09:28:42,518 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:42,519 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] [2022-11-20 09:28:42,519 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-20 09:28:42,519 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:42,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:42,520 INFO L85 PathProgramCache]: Analyzing trace with hash -2012137655, now seen corresponding path program 1 times [2022-11-20 09:28:42,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:42,520 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610900352] [2022-11-20 09:28:42,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:42,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:42,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:42,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:42,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:42,954 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610900352] [2022-11-20 09:28:42,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610900352] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:42,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1026926941] [2022-11-20 09:28:42,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:42,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:42,956 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:42,962 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:42,994 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-20 09:28:43,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:43,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:28:43,082 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:43,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:43,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:43,806 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:43,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1026926941] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:43,807 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:43,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-20 09:28:43,807 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978453995] [2022-11-20 09:28:43,808 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:43,808 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:28:43,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:43,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:28:43,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:28:43,812 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-20 09:28:43,814 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) [2022-11-20 09:28:43,814 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:43,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-20 09:28:43,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:44,301 INFO L130 PetriNetUnfolder]: 116/418 cut-off events. [2022-11-20 09:28:44,302 INFO L131 PetriNetUnfolder]: For 55/62 co-relation queries the response was YES. [2022-11-20 09:28:44,304 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. [2022-11-20 09:28:44,306 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 57 selfloop transitions, 14 changer transitions 1/133 dead transitions. [2022-11-20 09:28:44,306 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 133 transitions, 480 flow [2022-11-20 09:28:44,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:28:44,307 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:28:44,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 763 transitions. [2022-11-20 09:28:44,309 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7336538461538461 [2022-11-20 09:28:44,309 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 763 transitions. [2022-11-20 09:28:44,309 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 763 transitions. [2022-11-20 09:28:44,310 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:44,310 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 763 transitions. [2022-11-20 09:28:44,312 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) [2022-11-20 09:28:44,314 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) [2022-11-20 09:28:44,315 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) [2022-11-20 09:28:44,315 INFO L175 Difference]: Start difference. First operand has 96 places, 91 transitions, 225 flow. Second operand 10 states and 763 transitions. [2022-11-20 09:28:44,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 133 transitions, 480 flow [2022-11-20 09:28:44,319 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 133 transitions, 461 flow, removed 4 selfloop flow, removed 5 redundant places. [2022-11-20 09:28:44,323 INFO L231 Difference]: Finished difference. Result has 103 places, 99 transitions, 290 flow [2022-11-20 09:28:44,323 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} [2022-11-20 09:28:44,325 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 11 predicate places. [2022-11-20 09:28:44,326 INFO L495 AbstractCegarLoop]: Abstraction has has 103 places, 99 transitions, 290 flow [2022-11-20 09:28:44,327 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) [2022-11-20 09:28:44,327 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:44,328 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] [2022-11-20 09:28:44,339 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:44,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:44,534 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:44,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:44,535 INFO L85 PathProgramCache]: Analyzing trace with hash 1608187118, now seen corresponding path program 1 times [2022-11-20 09:28:44,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:44,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037326372] [2022-11-20 09:28:44,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:44,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:44,830 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:44,830 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:44,831 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2037326372] [2022-11-20 09:28:44,831 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2037326372] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:44,831 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:44,832 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:28:44,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [404377099] [2022-11-20 09:28:44,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:44,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:44,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:44,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:44,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:44,836 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-20 09:28:44,837 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) [2022-11-20 09:28:44,837 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:44,837 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-20 09:28:44,837 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:45,101 INFO L130 PetriNetUnfolder]: 111/410 cut-off events. [2022-11-20 09:28:45,102 INFO L131 PetriNetUnfolder]: For 222/226 co-relation queries the response was YES. [2022-11-20 09:28:45,105 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. [2022-11-20 09:28:45,108 INFO L137 encePairwiseOnDemand]: 91/104 looper letters, 47 selfloop transitions, 14 changer transitions 6/128 dead transitions. [2022-11-20 09:28:45,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 128 transitions, 543 flow [2022-11-20 09:28:45,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:45,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:45,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 540 transitions. [2022-11-20 09:28:45,113 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7417582417582418 [2022-11-20 09:28:45,113 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 540 transitions. [2022-11-20 09:28:45,114 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 540 transitions. [2022-11-20 09:28:45,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:45,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 540 transitions. [2022-11-20 09:28:45,116 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) [2022-11-20 09:28:45,117 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) [2022-11-20 09:28:45,118 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) [2022-11-20 09:28:45,118 INFO L175 Difference]: Start difference. First operand has 103 places, 99 transitions, 290 flow. Second operand 7 states and 540 transitions. [2022-11-20 09:28:45,118 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 128 transitions, 543 flow [2022-11-20 09:28:45,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 106 places, 128 transitions, 537 flow, removed 0 selfloop flow, removed 3 redundant places. [2022-11-20 09:28:45,125 INFO L231 Difference]: Finished difference. Result has 109 places, 103 transitions, 356 flow [2022-11-20 09:28:45,125 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} [2022-11-20 09:28:45,127 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 17 predicate places. [2022-11-20 09:28:45,127 INFO L495 AbstractCegarLoop]: Abstraction has has 109 places, 103 transitions, 356 flow [2022-11-20 09:28:45,127 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) [2022-11-20 09:28:45,128 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:45,128 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] [2022-11-20 09:28:45,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-20 09:28:45,129 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:45,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:45,129 INFO L85 PathProgramCache]: Analyzing trace with hash -727071269, now seen corresponding path program 2 times [2022-11-20 09:28:45,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:45,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917375378] [2022-11-20 09:28:45,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:45,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:45,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:45,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:45,418 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917375378] [2022-11-20 09:28:45,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917375378] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:45,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:45,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-20 09:28:45,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272199584] [2022-11-20 09:28:45,419 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:45,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-20 09:28:45,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:45,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-20 09:28:45,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:45,421 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-20 09:28:45,422 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) [2022-11-20 09:28:45,422 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:45,423 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-20 09:28:45,423 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:45,656 INFO L130 PetriNetUnfolder]: 107/379 cut-off events. [2022-11-20 09:28:45,656 INFO L131 PetriNetUnfolder]: For 344/348 co-relation queries the response was YES. [2022-11-20 09:28:45,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 879 conditions, 379 events. 107/379 cut-off events. For 344/348 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. [2022-11-20 09:28:45,660 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 43 selfloop transitions, 14 changer transitions 3/121 dead transitions. [2022-11-20 09:28:45,660 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 121 transitions, 553 flow [2022-11-20 09:28:45,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-20 09:28:45,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2022-11-20 09:28:45,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 532 transitions. [2022-11-20 09:28:45,662 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7307692307692307 [2022-11-20 09:28:45,663 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 532 transitions. [2022-11-20 09:28:45,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 532 transitions. [2022-11-20 09:28:45,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:45,663 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 532 transitions. [2022-11-20 09:28:45,665 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) [2022-11-20 09:28:45,667 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) [2022-11-20 09:28:45,667 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) [2022-11-20 09:28:45,667 INFO L175 Difference]: Start difference. First operand has 109 places, 103 transitions, 356 flow. Second operand 7 states and 532 transitions. [2022-11-20 09:28:45,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 121 transitions, 553 flow [2022-11-20 09:28:45,673 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 121 transitions, 545 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-20 09:28:45,677 INFO L231 Difference]: Finished difference. Result has 115 places, 105 transitions, 404 flow [2022-11-20 09:28:45,677 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} [2022-11-20 09:28:45,679 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 23 predicate places. [2022-11-20 09:28:45,680 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 105 transitions, 404 flow [2022-11-20 09:28:45,680 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) [2022-11-20 09:28:45,680 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:45,680 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] [2022-11-20 09:28:45,680 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-20 09:28:45,681 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:45,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:45,681 INFO L85 PathProgramCache]: Analyzing trace with hash -725094136, now seen corresponding path program 2 times [2022-11-20 09:28:45,681 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:45,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766346110] [2022-11-20 09:28:45,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:45,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:45,952 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:45,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:45,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766346110] [2022-11-20 09:28:45,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766346110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:45,952 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057760954] [2022-11-20 09:28:45,953 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:45,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:45,953 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:45,955 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:45,982 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-20 09:28:46,052 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:28:46,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:46,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 7 conjunts are in the unsatisfiable core [2022-11-20 09:28:46,060 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:46,342 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:46,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:46,600 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:46,601 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057760954] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:46,601 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:46,601 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2022-11-20 09:28:46,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415301606] [2022-11-20 09:28:46,623 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:46,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-20 09:28:46,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:46,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-20 09:28:46,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2022-11-20 09:28:46,630 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 69 out of 104 [2022-11-20 09:28:46,632 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) [2022-11-20 09:28:46,633 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:46,633 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 69 of 104 [2022-11-20 09:28:46,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:47,058 INFO L130 PetriNetUnfolder]: 125/419 cut-off events. [2022-11-20 09:28:47,058 INFO L131 PetriNetUnfolder]: For 623/623 co-relation queries the response was YES. [2022-11-20 09:28:47,060 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1047 conditions, 419 events. 125/419 cut-off events. For 623/623 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. [2022-11-20 09:28:47,062 INFO L137 encePairwiseOnDemand]: 93/104 looper letters, 57 selfloop transitions, 17 changer transitions 0/135 dead transitions. [2022-11-20 09:28:47,062 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 135 transitions, 709 flow [2022-11-20 09:28:47,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:28:47,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:28:47,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 749 transitions. [2022-11-20 09:28:47,065 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7201923076923077 [2022-11-20 09:28:47,069 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 749 transitions. [2022-11-20 09:28:47,069 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 749 transitions. [2022-11-20 09:28:47,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:47,070 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 749 transitions. [2022-11-20 09:28:47,071 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) [2022-11-20 09:28:47,073 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) [2022-11-20 09:28:47,074 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) [2022-11-20 09:28:47,074 INFO L175 Difference]: Start difference. First operand has 115 places, 105 transitions, 404 flow. Second operand 10 states and 749 transitions. [2022-11-20 09:28:47,074 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 135 transitions, 709 flow [2022-11-20 09:28:47,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 135 transitions, 683 flow, removed 6 selfloop flow, removed 4 redundant places. [2022-11-20 09:28:47,080 INFO L231 Difference]: Finished difference. Result has 123 places, 111 transitions, 482 flow [2022-11-20 09:28:47,080 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} [2022-11-20 09:28:47,083 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 31 predicate places. [2022-11-20 09:28:47,084 INFO L495 AbstractCegarLoop]: Abstraction has has 123 places, 111 transitions, 482 flow [2022-11-20 09:28:47,085 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) [2022-11-20 09:28:47,085 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:47,086 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] [2022-11-20 09:28:47,101 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:47,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-20 09:28:47,291 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:47,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:47,292 INFO L85 PathProgramCache]: Analyzing trace with hash 104085691, now seen corresponding path program 1 times [2022-11-20 09:28:47,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:47,292 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863811694] [2022-11-20 09:28:47,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:47,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:47,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,777 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:47,778 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:47,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863811694] [2022-11-20 09:28:47,778 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863811694] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:47,778 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1662390791] [2022-11-20 09:28:47,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:47,779 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:47,779 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:47,780 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:47,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-20 09:28:47,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:47,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:28:47,897 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:48,322 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:48,322 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:48,670 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:48,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1662390791] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:48,671 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:48,671 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 18 [2022-11-20 09:28:48,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372794446] [2022-11-20 09:28:48,672 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:48,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-11-20 09:28:48,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:48,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-11-20 09:28:48,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2022-11-20 09:28:48,675 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 68 out of 104 [2022-11-20 09:28:48,676 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) [2022-11-20 09:28:48,677 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:48,677 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 68 of 104 [2022-11-20 09:28:48,677 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:49,603 INFO L130 PetriNetUnfolder]: 209/614 cut-off events. [2022-11-20 09:28:49,604 INFO L131 PetriNetUnfolder]: For 1249/1249 co-relation queries the response was YES. [2022-11-20 09:28:49,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1683 conditions, 614 events. 209/614 cut-off events. For 1249/1249 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. [2022-11-20 09:28:49,610 INFO L137 encePairwiseOnDemand]: 90/104 looper letters, 91 selfloop transitions, 30 changer transitions 0/181 dead transitions. [2022-11-20 09:28:49,611 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 181 transitions, 1151 flow [2022-11-20 09:28:49,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-11-20 09:28:49,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2022-11-20 09:28:49,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 1255 transitions. [2022-11-20 09:28:49,615 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.709841628959276 [2022-11-20 09:28:49,615 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 1255 transitions. [2022-11-20 09:28:49,616 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 1255 transitions. [2022-11-20 09:28:49,617 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:49,617 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 1255 transitions. [2022-11-20 09:28:49,620 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) [2022-11-20 09:28:49,624 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) [2022-11-20 09:28:49,624 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) [2022-11-20 09:28:49,625 INFO L175 Difference]: Start difference. First operand has 123 places, 111 transitions, 482 flow. Second operand 17 states and 1255 transitions. [2022-11-20 09:28:49,625 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 181 transitions, 1151 flow [2022-11-20 09:28:49,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 181 transitions, 1119 flow, removed 9 selfloop flow, removed 5 redundant places. [2022-11-20 09:28:49,634 INFO L231 Difference]: Finished difference. Result has 140 places, 125 transitions, 680 flow [2022-11-20 09:28:49,635 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} [2022-11-20 09:28:49,635 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 48 predicate places. [2022-11-20 09:28:49,636 INFO L495 AbstractCegarLoop]: Abstraction has has 140 places, 125 transitions, 680 flow [2022-11-20 09:28:49,636 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) [2022-11-20 09:28:49,637 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:49,637 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] [2022-11-20 09:28:49,647 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:49,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:49,843 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:49,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:49,843 INFO L85 PathProgramCache]: Analyzing trace with hash 431972307, now seen corresponding path program 2 times [2022-11-20 09:28:49,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:49,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069598630] [2022-11-20 09:28:49,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:49,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:49,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:50,011 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:50,011 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1069598630] [2022-11-20 09:28:50,011 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1069598630] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:50,012 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:50,012 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:28:50,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736667193] [2022-11-20 09:28:50,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:50,013 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:50,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:50,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:50,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:50,014 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-20 09:28:50,015 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) [2022-11-20 09:28:50,015 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:50,015 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-20 09:28:50,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:50,221 INFO L130 PetriNetUnfolder]: 230/959 cut-off events. [2022-11-20 09:28:50,221 INFO L131 PetriNetUnfolder]: For 2148/2152 co-relation queries the response was YES. [2022-11-20 09:28:50,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2706 conditions, 959 events. 230/959 cut-off events. For 2148/2152 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. [2022-11-20 09:28:50,233 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 22 selfloop transitions, 5 changer transitions 0/139 dead transitions. [2022-11-20 09:28:50,233 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 139 transitions, 778 flow [2022-11-20 09:28:50,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:50,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:50,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 377 transitions. [2022-11-20 09:28:50,235 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.90625 [2022-11-20 09:28:50,235 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 377 transitions. [2022-11-20 09:28:50,236 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 377 transitions. [2022-11-20 09:28:50,236 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:50,236 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 377 transitions. [2022-11-20 09:28:50,237 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) [2022-11-20 09:28:50,238 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) [2022-11-20 09:28:50,239 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) [2022-11-20 09:28:50,239 INFO L175 Difference]: Start difference. First operand has 140 places, 125 transitions, 680 flow. Second operand 4 states and 377 transitions. [2022-11-20 09:28:50,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 139 transitions, 778 flow [2022-11-20 09:28:50,249 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 139 transitions, 752 flow, removed 3 selfloop flow, removed 7 redundant places. [2022-11-20 09:28:50,252 INFO L231 Difference]: Finished difference. Result has 139 places, 128 transitions, 688 flow [2022-11-20 09:28:50,252 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} [2022-11-20 09:28:50,253 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 47 predicate places. [2022-11-20 09:28:50,253 INFO L495 AbstractCegarLoop]: Abstraction has has 139 places, 128 transitions, 688 flow [2022-11-20 09:28:50,254 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) [2022-11-20 09:28:50,254 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:50,254 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] [2022-11-20 09:28:50,254 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-20 09:28:50,254 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:50,255 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:50,255 INFO L85 PathProgramCache]: Analyzing trace with hash -2121644331, now seen corresponding path program 1 times [2022-11-20 09:28:50,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:50,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278690573] [2022-11-20 09:28:50,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:50,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,824 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:50,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:50,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278690573] [2022-11-20 09:28:50,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278690573] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:50,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1216288024] [2022-11-20 09:28:50,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:50,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:50,825 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:50,830 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:50,850 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-20 09:28:50,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:50,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 11 conjunts are in the unsatisfiable core [2022-11-20 09:28:50,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:51,379 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:28:51,380 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:52,092 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:28:52,092 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1216288024] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:52,092 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:52,092 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 21 [2022-11-20 09:28:52,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440707057] [2022-11-20 09:28:52,093 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:52,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-11-20 09:28:52,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:52,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-11-20 09:28:52,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2022-11-20 09:28:52,096 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-20 09:28:52,098 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) [2022-11-20 09:28:52,098 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:52,098 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-20 09:28:52,098 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:54,308 INFO L130 PetriNetUnfolder]: 762/2095 cut-off events. [2022-11-20 09:28:54,309 INFO L131 PetriNetUnfolder]: For 6990/7026 co-relation queries the response was YES. [2022-11-20 09:28:54,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7237 conditions, 2095 events. 762/2095 cut-off events. For 6990/7026 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. [2022-11-20 09:28:54,334 INFO L137 encePairwiseOnDemand]: 88/104 looper letters, 132 selfloop transitions, 48 changer transitions 0/242 dead transitions. [2022-11-20 09:28:54,335 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 242 transitions, 1862 flow [2022-11-20 09:28:54,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-20 09:28:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2022-11-20 09:28:54,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 1675 transitions. [2022-11-20 09:28:54,340 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.7002508361204013 [2022-11-20 09:28:54,341 INFO L72 ComplementDD]: Start complementDD. Operand 23 states and 1675 transitions. [2022-11-20 09:28:54,341 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 1675 transitions. [2022-11-20 09:28:54,342 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:54,342 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 23 states and 1675 transitions. [2022-11-20 09:28:54,347 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) [2022-11-20 09:28:54,353 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) [2022-11-20 09:28:54,354 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) [2022-11-20 09:28:54,354 INFO L175 Difference]: Start difference. First operand has 139 places, 128 transitions, 688 flow. Second operand 23 states and 1675 transitions. [2022-11-20 09:28:54,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 242 transitions, 1862 flow [2022-11-20 09:28:54,383 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 242 transitions, 1862 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:28:54,388 INFO L231 Difference]: Finished difference. Result has 173 places, 160 transitions, 1153 flow [2022-11-20 09:28:54,389 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} [2022-11-20 09:28:54,390 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 81 predicate places. [2022-11-20 09:28:54,390 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 160 transitions, 1153 flow [2022-11-20 09:28:54,391 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) [2022-11-20 09:28:54,391 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:54,391 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] [2022-11-20 09:28:54,397 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:54,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:54,597 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:54,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:54,598 INFO L85 PathProgramCache]: Analyzing trace with hash -1395088446, now seen corresponding path program 1 times [2022-11-20 09:28:54,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:54,598 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259067990] [2022-11-20 09:28:54,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:54,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:54,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:54,774 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 14 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:28:54,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:54,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259067990] [2022-11-20 09:28:54,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259067990] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:54,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [958332172] [2022-11-20 09:28:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:54,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:54,775 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:54,776 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:54,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-20 09:28:54,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:54,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-20 09:28:54,896 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:54,966 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-20 09:28:54,966 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-20 09:28:54,967 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [958332172] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:54,967 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-20 09:28:54,967 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-11-20 09:28:54,967 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092599552] [2022-11-20 09:28:54,967 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:54,968 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:54,968 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:54,969 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:54,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-20 09:28:54,969 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-20 09:28:54,970 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) [2022-11-20 09:28:54,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:54,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-20 09:28:54,971 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:55,534 INFO L130 PetriNetUnfolder]: 478/2731 cut-off events. [2022-11-20 09:28:55,534 INFO L131 PetriNetUnfolder]: For 12094/12234 co-relation queries the response was YES. [2022-11-20 09:28:55,557 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9462 conditions, 2731 events. 478/2731 cut-off events. For 12094/12234 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. [2022-11-20 09:28:55,570 INFO L137 encePairwiseOnDemand]: 99/104 looper letters, 19 selfloop transitions, 5 changer transitions 0/171 dead transitions. [2022-11-20 09:28:55,571 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 171 transitions, 1231 flow [2022-11-20 09:28:55,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:55,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:55,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 376 transitions. [2022-11-20 09:28:55,572 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9038461538461539 [2022-11-20 09:28:55,572 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 376 transitions. [2022-11-20 09:28:55,573 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 376 transitions. [2022-11-20 09:28:55,573 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:55,573 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 376 transitions. [2022-11-20 09:28:55,574 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) [2022-11-20 09:28:55,575 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) [2022-11-20 09:28:55,575 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) [2022-11-20 09:28:55,575 INFO L175 Difference]: Start difference. First operand has 173 places, 160 transitions, 1153 flow. Second operand 4 states and 376 transitions. [2022-11-20 09:28:55,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 171 transitions, 1231 flow [2022-11-20 09:28:55,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 170 places, 171 transitions, 1182 flow, removed 17 selfloop flow, removed 6 redundant places. [2022-11-20 09:28:55,623 INFO L231 Difference]: Finished difference. Result has 173 places, 163 transitions, 1138 flow [2022-11-20 09:28:55,625 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} [2022-11-20 09:28:55,625 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 81 predicate places. [2022-11-20 09:28:55,625 INFO L495 AbstractCegarLoop]: Abstraction has has 173 places, 163 transitions, 1138 flow [2022-11-20 09:28:55,626 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) [2022-11-20 09:28:55,626 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:55,626 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] [2022-11-20 09:28:55,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-20 09:28:55,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:55,837 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:55,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:55,838 INFO L85 PathProgramCache]: Analyzing trace with hash 1442147978, now seen corresponding path program 1 times [2022-11-20 09:28:55,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:55,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018586817] [2022-11-20 09:28:55,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:55,839 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:55,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:56,007 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:28:56,008 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:56,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018586817] [2022-11-20 09:28:56,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2018586817] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:28:56,008 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:28:56,008 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:28:56,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2065964652] [2022-11-20 09:28:56,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:28:56,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:28:56,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:56,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:28:56,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:28:56,013 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-20 09:28:56,013 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) [2022-11-20 09:28:56,013 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:56,013 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-20 09:28:56,014 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:56,540 INFO L130 PetriNetUnfolder]: 546/2510 cut-off events. [2022-11-20 09:28:56,540 INFO L131 PetriNetUnfolder]: For 10412/10478 co-relation queries the response was YES. [2022-11-20 09:28:56,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9044 conditions, 2510 events. 546/2510 cut-off events. For 10412/10478 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. [2022-11-20 09:28:56,591 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 22 selfloop transitions, 6 changer transitions 0/175 dead transitions. [2022-11-20 09:28:56,591 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 175 transitions, 1243 flow [2022-11-20 09:28:56,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:28:56,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:28:56,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 375 transitions. [2022-11-20 09:28:56,593 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9014423076923077 [2022-11-20 09:28:56,593 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 375 transitions. [2022-11-20 09:28:56,593 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 375 transitions. [2022-11-20 09:28:56,593 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:56,594 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 375 transitions. [2022-11-20 09:28:56,595 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) [2022-11-20 09:28:56,596 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) [2022-11-20 09:28:56,596 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) [2022-11-20 09:28:56,596 INFO L175 Difference]: Start difference. First operand has 173 places, 163 transitions, 1138 flow. Second operand 4 states and 375 transitions. [2022-11-20 09:28:56,596 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 175 transitions, 1243 flow [2022-11-20 09:28:56,646 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 176 places, 175 transitions, 1243 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:28:56,649 INFO L231 Difference]: Finished difference. Result has 178 places, 165 transitions, 1172 flow [2022-11-20 09:28:56,650 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} [2022-11-20 09:28:56,650 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 86 predicate places. [2022-11-20 09:28:56,651 INFO L495 AbstractCegarLoop]: Abstraction has has 178 places, 165 transitions, 1172 flow [2022-11-20 09:28:56,651 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) [2022-11-20 09:28:56,651 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:56,651 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] [2022-11-20 09:28:56,652 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-20 09:28:56,652 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:56,652 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:56,652 INFO L85 PathProgramCache]: Analyzing trace with hash -974993986, now seen corresponding path program 1 times [2022-11-20 09:28:56,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:56,653 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564367464] [2022-11-20 09:28:56,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:56,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:57,082 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:57,082 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:57,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564367464] [2022-11-20 09:28:57,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564367464] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:57,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1370661845] [2022-11-20 09:28:57,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:57,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:57,083 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:57,087 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:57,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-20 09:28:57,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:57,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:28:57,193 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:57,414 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:57,414 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:57,589 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:28:57,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1370661845] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:57,589 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:57,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-20 09:28:57,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [14434603] [2022-11-20 09:28:57,590 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:57,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:28:57,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:57,591 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:28:57,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:28:57,592 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-20 09:28:57,593 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) [2022-11-20 09:28:57,594 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:57,594 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-20 09:28:57,594 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:28:58,370 INFO L130 PetriNetUnfolder]: 478/2754 cut-off events. [2022-11-20 09:28:58,370 INFO L131 PetriNetUnfolder]: For 12321/12488 co-relation queries the response was YES. [2022-11-20 09:28:58,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10041 conditions, 2754 events. 478/2754 cut-off events. For 12321/12488 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. [2022-11-20 09:28:58,409 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 29 selfloop transitions, 19 changer transitions 4/195 dead transitions. [2022-11-20 09:28:58,409 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 195 transitions, 1365 flow [2022-11-20 09:28:58,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:28:58,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:28:58,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 843 transitions. [2022-11-20 09:28:58,412 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8105769230769231 [2022-11-20 09:28:58,412 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 843 transitions. [2022-11-20 09:28:58,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 843 transitions. [2022-11-20 09:28:58,413 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:28:58,413 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 843 transitions. [2022-11-20 09:28:58,415 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) [2022-11-20 09:28:58,417 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) [2022-11-20 09:28:58,418 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) [2022-11-20 09:28:58,418 INFO L175 Difference]: Start difference. First operand has 178 places, 165 transitions, 1172 flow. Second operand 10 states and 843 transitions. [2022-11-20 09:28:58,418 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 195 transitions, 1365 flow [2022-11-20 09:28:58,470 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 195 transitions, 1365 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:28:58,474 INFO L231 Difference]: Finished difference. Result has 190 places, 175 transitions, 1272 flow [2022-11-20 09:28:58,474 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} [2022-11-20 09:28:58,475 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 98 predicate places. [2022-11-20 09:28:58,475 INFO L495 AbstractCegarLoop]: Abstraction has has 190 places, 175 transitions, 1272 flow [2022-11-20 09:28:58,476 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) [2022-11-20 09:28:58,476 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:28:58,476 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] [2022-11-20 09:28:58,481 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-20 09:28:58,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-20 09:28:58,682 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:28:58,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:28:58,682 INFO L85 PathProgramCache]: Analyzing trace with hash -328264022, now seen corresponding path program 2 times [2022-11-20 09:28:58,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:28:58,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [989097856] [2022-11-20 09:28:58,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:28:58,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:28:58,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:28:59,115 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:28:59,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:28:59,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [989097856] [2022-11-20 09:28:59,116 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [989097856] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:28:59,116 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1939756668] [2022-11-20 09:28:59,116 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:28:59,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:28:59,117 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:28:59,118 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:28:59,120 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-20 09:28:59,227 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:28:59,227 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:28:59,229 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:28:59,234 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:28:59,451 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:28:59,451 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:28:59,614 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-20 09:28:59,615 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1939756668] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:28:59,615 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:28:59,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 11 [2022-11-20 09:28:59,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21411843] [2022-11-20 09:28:59,615 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:28:59,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-20 09:28:59,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:28:59,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-20 09:28:59,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-11-20 09:28:59,617 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-20 09:28:59,618 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) [2022-11-20 09:28:59,619 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:28:59,619 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-20 09:28:59,619 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:00,772 INFO L130 PetriNetUnfolder]: 681/3850 cut-off events. [2022-11-20 09:29:00,772 INFO L131 PetriNetUnfolder]: For 19334/19878 co-relation queries the response was YES. [2022-11-20 09:29:00,808 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14309 conditions, 3850 events. 681/3850 cut-off events. For 19334/19878 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. [2022-11-20 09:29:00,827 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 37 selfloop transitions, 26 changer transitions 4/210 dead transitions. [2022-11-20 09:29:00,827 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 210 transitions, 1564 flow [2022-11-20 09:29:00,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-20 09:29:00,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2022-11-20 09:29:00,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 844 transitions. [2022-11-20 09:29:00,830 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8115384615384615 [2022-11-20 09:29:00,830 INFO L72 ComplementDD]: Start complementDD. Operand 10 states and 844 transitions. [2022-11-20 09:29:00,830 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 844 transitions. [2022-11-20 09:29:00,831 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:00,831 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 10 states and 844 transitions. [2022-11-20 09:29:00,833 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) [2022-11-20 09:29:00,836 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) [2022-11-20 09:29:00,837 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) [2022-11-20 09:29:00,837 INFO L175 Difference]: Start difference. First operand has 190 places, 175 transitions, 1272 flow. Second operand 10 states and 844 transitions. [2022-11-20 09:29:00,837 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 197 places, 210 transitions, 1564 flow [2022-11-20 09:29:00,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 210 transitions, 1493 flow, removed 30 selfloop flow, removed 5 redundant places. [2022-11-20 09:29:00,910 INFO L231 Difference]: Finished difference. Result has 196 places, 190 transitions, 1401 flow [2022-11-20 09:29:00,910 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} [2022-11-20 09:29:00,911 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 104 predicate places. [2022-11-20 09:29:00,911 INFO L495 AbstractCegarLoop]: Abstraction has has 196 places, 190 transitions, 1401 flow [2022-11-20 09:29:00,912 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) [2022-11-20 09:29:00,912 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:00,912 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] [2022-11-20 09:29:00,918 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:01,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-20 09:29:01,114 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:29:01,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:01,115 INFO L85 PathProgramCache]: Analyzing trace with hash -999366182, now seen corresponding path program 3 times [2022-11-20 09:29:01,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:01,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111056342] [2022-11-20 09:29:01,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:01,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:01,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:01,558 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:01,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:01,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111056342] [2022-11-20 09:29:01,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111056342] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:01,558 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1550044084] [2022-11-20 09:29:01,558 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:29:01,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:01,559 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:01,560 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:01,575 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-20 09:29:01,683 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 09:29:01,683 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:01,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:29:01,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:01,898 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:01,899 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:02,088 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:02,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1550044084] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:02,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:02,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-20 09:29:02,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1821519447] [2022-11-20 09:29:02,089 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:02,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:29:02,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:02,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:29:02,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:29:02,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-20 09:29:02,092 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) [2022-11-20 09:29:02,092 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:02,093 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-20 09:29:02,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:04,106 INFO L130 PetriNetUnfolder]: 1211/6869 cut-off events. [2022-11-20 09:29:04,106 INFO L131 PetriNetUnfolder]: For 37013/37941 co-relation queries the response was YES. [2022-11-20 09:29:04,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25741 conditions, 6869 events. 1211/6869 cut-off events. For 37013/37941 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. [2022-11-20 09:29:04,211 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 48 selfloop transitions, 38 changer transitions 4/233 dead transitions. [2022-11-20 09:29:04,211 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 233 transitions, 1770 flow [2022-11-20 09:29:04,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:29:04,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:29:04,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 936 transitions. [2022-11-20 09:29:04,214 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-20 09:29:04,214 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 936 transitions. [2022-11-20 09:29:04,214 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 936 transitions. [2022-11-20 09:29:04,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:04,215 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 936 transitions. [2022-11-20 09:29:04,217 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) [2022-11-20 09:29:04,219 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) [2022-11-20 09:29:04,220 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) [2022-11-20 09:29:04,220 INFO L175 Difference]: Start difference. First operand has 196 places, 190 transitions, 1401 flow. Second operand 11 states and 936 transitions. [2022-11-20 09:29:04,221 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 233 transitions, 1770 flow [2022-11-20 09:29:04,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 199 places, 233 transitions, 1737 flow, removed 12 selfloop flow, removed 5 redundant places. [2022-11-20 09:29:04,368 INFO L231 Difference]: Finished difference. Result has 202 places, 205 transitions, 1580 flow [2022-11-20 09:29:04,369 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} [2022-11-20 09:29:04,369 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 110 predicate places. [2022-11-20 09:29:04,369 INFO L495 AbstractCegarLoop]: Abstraction has has 202 places, 205 transitions, 1580 flow [2022-11-20 09:29:04,370 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) [2022-11-20 09:29:04,370 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:04,370 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] [2022-11-20 09:29:04,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-11-20 09:29:04,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:04,579 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:29:04,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:04,579 INFO L85 PathProgramCache]: Analyzing trace with hash 2115636422, now seen corresponding path program 4 times [2022-11-20 09:29:04,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:04,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748634] [2022-11-20 09:29:04,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:04,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:04,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:05,043 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:05,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:05,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748634] [2022-11-20 09:29:05,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748634] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:05,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1198664402] [2022-11-20 09:29:05,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-11-20 09:29:05,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:05,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:05,045 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:05,070 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-20 09:29:05,143 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-11-20 09:29:05,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:05,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 20 conjunts are in the unsatisfiable core [2022-11-20 09:29:05,146 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:05,433 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:05,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:05,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1198664402] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:05,599 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:05,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-20 09:29:05,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53493075] [2022-11-20 09:29:05,601 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:05,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:29:05,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:05,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:29:05,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:29:05,606 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-20 09:29:05,608 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) [2022-11-20 09:29:05,608 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:05,608 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-20 09:29:05,609 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:07,027 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))]) [2022-11-20 09:29:07,027 INFO L383 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2022-11-20 09:29:07,027 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-20 09:29:07,027 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-20 09:29:07,028 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-20 09:29:07,446 INFO L130 PetriNetUnfolder]: 1265/7310 cut-off events. [2022-11-20 09:29:07,446 INFO L131 PetriNetUnfolder]: For 41960/43229 co-relation queries the response was YES. [2022-11-20 09:29:07,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28036 conditions, 7310 events. 1265/7310 cut-off events. For 41960/43229 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. [2022-11-20 09:29:07,540 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 58 selfloop transitions, 34 changer transitions 4/239 dead transitions. [2022-11-20 09:29:07,540 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 239 transitions, 1937 flow [2022-11-20 09:29:07,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:29:07,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:29:07,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 931 transitions. [2022-11-20 09:29:07,543 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8138111888111889 [2022-11-20 09:29:07,543 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 931 transitions. [2022-11-20 09:29:07,543 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 931 transitions. [2022-11-20 09:29:07,543 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:07,544 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 931 transitions. [2022-11-20 09:29:07,546 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) [2022-11-20 09:29:07,547 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) [2022-11-20 09:29:07,548 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) [2022-11-20 09:29:07,548 INFO L175 Difference]: Start difference. First operand has 202 places, 205 transitions, 1580 flow. Second operand 11 states and 931 transitions. [2022-11-20 09:29:07,548 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 239 transitions, 1937 flow [2022-11-20 09:29:07,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 239 transitions, 1865 flow, removed 26 selfloop flow, removed 6 redundant places. [2022-11-20 09:29:07,703 INFO L231 Difference]: Finished difference. Result has 207 places, 213 transitions, 1692 flow [2022-11-20 09:29:07,703 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} [2022-11-20 09:29:07,704 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 115 predicate places. [2022-11-20 09:29:07,704 INFO L495 AbstractCegarLoop]: Abstraction has has 207 places, 213 transitions, 1692 flow [2022-11-20 09:29:07,705 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) [2022-11-20 09:29:07,705 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:07,705 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] [2022-11-20 09:29:07,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:07,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-11-20 09:29:07,913 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:29:07,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:07,913 INFO L85 PathProgramCache]: Analyzing trace with hash 583606678, now seen corresponding path program 5 times [2022-11-20 09:29:07,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:07,914 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586310609] [2022-11-20 09:29:07,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:07,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:07,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:08,427 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:08,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:08,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586310609] [2022-11-20 09:29:08,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586310609] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:08,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067433610] [2022-11-20 09:29:08,428 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-11-20 09:29:08,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:08,428 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:08,429 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:08,461 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-20 09:29:08,539 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2022-11-20 09:29:08,539 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:08,541 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:29:08,544 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:08,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:08,963 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:08,964 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067433610] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:08,964 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:08,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-20 09:29:08,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825855199] [2022-11-20 09:29:08,965 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:08,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:29:08,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:08,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:29:08,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:29:08,968 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-20 09:29:08,970 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) [2022-11-20 09:29:08,970 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:08,970 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-20 09:29:08,970 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:10,670 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))))]) [2022-11-20 09:29:10,670 INFO L383 tUnfolder$Statistics]: this new event has 89 ancestors and is cut-off event [2022-11-20 09:29:10,670 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-20 09:29:10,670 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-20 09:29:10,670 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-11-20 09:29:10,700 INFO L381 tUnfolder$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))]) [2022-11-20 09:29:10,701 INFO L383 tUnfolder$Statistics]: this new event has 96 ancestors and is cut-off event [2022-11-20 09:29:10,701 INFO L386 tUnfolder$Statistics]: existing Event has 82 ancestors and is cut-off event [2022-11-20 09:29:10,701 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-20 09:29:10,701 INFO L386 tUnfolder$Statistics]: existing Event has 89 ancestors and is cut-off event [2022-11-20 09:29:11,276 INFO L130 PetriNetUnfolder]: 1661/9687 cut-off events. [2022-11-20 09:29:11,276 INFO L131 PetriNetUnfolder]: For 57552/59092 co-relation queries the response was YES. [2022-11-20 09:29:11,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37173 conditions, 9687 events. 1661/9687 cut-off events. For 57552/59092 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. [2022-11-20 09:29:11,364 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 65 selfloop transitions, 50 changer transitions 4/262 dead transitions. [2022-11-20 09:29:11,365 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 262 transitions, 2225 flow [2022-11-20 09:29:11,365 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:29:11,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:29:11,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 934 transitions. [2022-11-20 09:29:11,367 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8164335664335665 [2022-11-20 09:29:11,367 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 934 transitions. [2022-11-20 09:29:11,367 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 934 transitions. [2022-11-20 09:29:11,368 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:11,368 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 934 transitions. [2022-11-20 09:29:11,370 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) [2022-11-20 09:29:11,372 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) [2022-11-20 09:29:11,372 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) [2022-11-20 09:29:11,372 INFO L175 Difference]: Start difference. First operand has 207 places, 213 transitions, 1692 flow. Second operand 11 states and 934 transitions. [2022-11-20 09:29:11,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 262 transitions, 2225 flow [2022-11-20 09:29:11,680 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 262 transitions, 2178 flow, removed 19 selfloop flow, removed 5 redundant places. [2022-11-20 09:29:11,685 INFO L231 Difference]: Finished difference. Result has 215 places, 235 transitions, 2045 flow [2022-11-20 09:29:11,686 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} [2022-11-20 09:29:11,687 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 123 predicate places. [2022-11-20 09:29:11,687 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 235 transitions, 2045 flow [2022-11-20 09:29:11,688 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) [2022-11-20 09:29:11,688 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:11,688 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] [2022-11-20 09:29:11,696 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:11,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-20 09:29:11,904 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:29:11,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:11,904 INFO L85 PathProgramCache]: Analyzing trace with hash -312295990, now seen corresponding path program 6 times [2022-11-20 09:29:11,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:11,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907219133] [2022-11-20 09:29:11,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:11,905 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:11,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:12,367 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:12,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:12,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [907219133] [2022-11-20 09:29:12,367 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [907219133] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:12,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2026908966] [2022-11-20 09:29:12,368 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-11-20 09:29:12,368 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:12,368 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:12,369 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:12,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-20 09:29:12,508 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 3 check-sat command(s) [2022-11-20 09:29:12,508 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:29:12,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 18 conjunts are in the unsatisfiable core [2022-11-20 09:29:12,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:12,752 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:12,752 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:12,923 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-11-20 09:29:12,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2026908966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:12,924 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:12,924 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 12 [2022-11-20 09:29:12,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791309994] [2022-11-20 09:29:12,925 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:12,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-20 09:29:12,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:12,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-20 09:29:12,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-11-20 09:29:12,928 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 79 out of 104 [2022-11-20 09:29:12,938 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) [2022-11-20 09:29:12,938 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:12,938 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 79 of 104 [2022-11-20 09:29:12,938 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:16,309 INFO L130 PetriNetUnfolder]: 2301/13126 cut-off events. [2022-11-20 09:29:16,309 INFO L131 PetriNetUnfolder]: For 85516/87743 co-relation queries the response was YES. [2022-11-20 09:29:16,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51906 conditions, 13126 events. 2301/13126 cut-off events. For 85516/87743 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. [2022-11-20 09:29:16,475 INFO L137 encePairwiseOnDemand]: 92/104 looper letters, 105 selfloop transitions, 46 changer transitions 4/298 dead transitions. [2022-11-20 09:29:16,475 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 223 places, 298 transitions, 2812 flow [2022-11-20 09:29:16,476 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-20 09:29:16,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-20 09:29:16,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 936 transitions. [2022-11-20 09:29:16,479 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8181818181818182 [2022-11-20 09:29:16,479 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 936 transitions. [2022-11-20 09:29:16,480 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 936 transitions. [2022-11-20 09:29:16,480 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:16,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 936 transitions. [2022-11-20 09:29:16,484 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) [2022-11-20 09:29:16,487 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) [2022-11-20 09:29:16,487 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) [2022-11-20 09:29:16,488 INFO L175 Difference]: Start difference. First operand has 215 places, 235 transitions, 2045 flow. Second operand 11 states and 936 transitions. [2022-11-20 09:29:16,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 223 places, 298 transitions, 2812 flow [2022-11-20 09:29:16,787 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 298 transitions, 2753 flow, removed 25 selfloop flow, removed 5 redundant places. [2022-11-20 09:29:16,794 INFO L231 Difference]: Finished difference. Result has 223 places, 270 transitions, 2551 flow [2022-11-20 09:29:16,794 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} [2022-11-20 09:29:16,795 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 131 predicate places. [2022-11-20 09:29:16,795 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 270 transitions, 2551 flow [2022-11-20 09:29:16,796 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) [2022-11-20 09:29:16,796 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:16,796 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] [2022-11-20 09:29:16,803 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-20 09:29:17,001 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:17,002 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:29:17,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:17,002 INFO L85 PathProgramCache]: Analyzing trace with hash 646092, now seen corresponding path program 1 times [2022-11-20 09:29:17,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:17,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [937573102] [2022-11-20 09:29:17,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:17,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:17,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:17,342 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-20 09:29:17,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:17,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [937573102] [2022-11-20 09:29:17,343 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [937573102] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-20 09:29:17,343 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-20 09:29:17,343 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-20 09:29:17,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [514955678] [2022-11-20 09:29:17,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-20 09:29:17,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-20 09:29:17,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:17,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-20 09:29:17,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-20 09:29:17,345 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 88 out of 104 [2022-11-20 09:29:17,345 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) [2022-11-20 09:29:17,346 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:17,346 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 88 of 104 [2022-11-20 09:29:17,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:29:18,670 INFO L130 PetriNetUnfolder]: 777/5959 cut-off events. [2022-11-20 09:29:18,671 INFO L131 PetriNetUnfolder]: For 36747/37488 co-relation queries the response was YES. [2022-11-20 09:29:18,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24116 conditions, 5959 events. 777/5959 cut-off events. For 36747/37488 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. [2022-11-20 09:29:18,723 INFO L137 encePairwiseOnDemand]: 100/104 looper letters, 62 selfloop transitions, 6 changer transitions 0/256 dead transitions. [2022-11-20 09:29:18,723 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 256 transitions, 2464 flow [2022-11-20 09:29:18,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-20 09:29:18,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2022-11-20 09:29:18,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 373 transitions. [2022-11-20 09:29:18,725 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8966346153846154 [2022-11-20 09:29:18,725 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 373 transitions. [2022-11-20 09:29:18,725 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 373 transitions. [2022-11-20 09:29:18,726 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:29:18,726 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 373 transitions. [2022-11-20 09:29:18,727 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) [2022-11-20 09:29:18,727 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) [2022-11-20 09:29:18,728 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) [2022-11-20 09:29:18,728 INFO L175 Difference]: Start difference. First operand has 223 places, 270 transitions, 2551 flow. Second operand 4 states and 373 transitions. [2022-11-20 09:29:18,728 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 256 transitions, 2464 flow [2022-11-20 09:29:18,853 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 256 transitions, 2397 flow, removed 24 selfloop flow, removed 6 redundant places. [2022-11-20 09:29:18,857 INFO L231 Difference]: Finished difference. Result has 220 places, 249 transitions, 2246 flow [2022-11-20 09:29:18,857 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} [2022-11-20 09:29:18,858 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 128 predicate places. [2022-11-20 09:29:18,858 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 249 transitions, 2246 flow [2022-11-20 09:29:18,858 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) [2022-11-20 09:29:18,858 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:29:18,858 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] [2022-11-20 09:29:18,859 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-11-20 09:29:18,859 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:29:18,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:29:18,859 INFO L85 PathProgramCache]: Analyzing trace with hash 162818691, now seen corresponding path program 7 times [2022-11-20 09:29:18,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:29:18,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1949006745] [2022-11-20 09:29:18,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:29:18,860 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:29:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:19,727 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:29:19,727 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:29:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1949006745] [2022-11-20 09:29:19,727 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1949006745] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:29:19,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [121391473] [2022-11-20 09:29:19,728 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2022-11-20 09:29:19,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:29:19,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:29:19,743 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:29:19,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-20 09:29:19,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:29:20,000 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:29:20,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:29:20,795 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 09:29:20,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:29:22,069 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 09:29:22,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [121391473] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:29:22,069 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:29:22,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 35 [2022-11-20 09:29:22,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003365890] [2022-11-20 09:29:22,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:29:22,072 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-11-20 09:29:22,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:29:22,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-11-20 09:29:22,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1079, Unknown=0, NotChecked=0, Total=1190 [2022-11-20 09:29:22,075 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 63 out of 104 [2022-11-20 09:29:22,077 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) [2022-11-20 09:29:22,077 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:29:22,078 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 63 of 104 [2022-11-20 09:29:22,078 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:04,568 INFO L130 PetriNetUnfolder]: 8382/24198 cut-off events. [2022-11-20 09:31:04,569 INFO L131 PetriNetUnfolder]: For 191262/191262 co-relation queries the response was YES. [2022-11-20 09:31:04,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 116309 conditions, 24198 events. 8382/24198 cut-off events. For 191262/191262 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. [2022-11-20 09:31:04,872 INFO L137 encePairwiseOnDemand]: 83/104 looper letters, 1569 selfloop transitions, 295 changer transitions 0/1927 dead transitions. [2022-11-20 09:31:04,873 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 347 places, 1927 transitions, 23513 flow [2022-11-20 09:31:04,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 128 states. [2022-11-20 09:31:04,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 128 states. [2022-11-20 09:31:04,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 8801 transitions. [2022-11-20 09:31:04,904 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6611328125 [2022-11-20 09:31:04,905 INFO L72 ComplementDD]: Start complementDD. Operand 128 states and 8801 transitions. [2022-11-20 09:31:04,905 INFO L73 IsDeterministic]: Start isDeterministic. Operand 128 states and 8801 transitions. [2022-11-20 09:31:04,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:31:04,911 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 128 states and 8801 transitions. [2022-11-20 09:31:04,929 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) [2022-11-20 09:31:04,953 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) [2022-11-20 09:31:04,957 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) [2022-11-20 09:31:04,958 INFO L175 Difference]: Start difference. First operand has 220 places, 249 transitions, 2246 flow. Second operand 128 states and 8801 transitions. [2022-11-20 09:31:04,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 347 places, 1927 transitions, 23513 flow [2022-11-20 09:31:05,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 1927 transitions, 23513 flow, removed 0 selfloop flow, removed 0 redundant places. [2022-11-20 09:31:05,833 INFO L231 Difference]: Finished difference. Result has 416 places, 493 transitions, 5745 flow [2022-11-20 09:31:05,833 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} [2022-11-20 09:31:05,834 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 324 predicate places. [2022-11-20 09:31:05,834 INFO L495 AbstractCegarLoop]: Abstraction has has 416 places, 493 transitions, 5745 flow [2022-11-20 09:31:05,835 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) [2022-11-20 09:31:05,835 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:31:05,836 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] [2022-11-20 09:31:05,841 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-20 09:31:06,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:06,041 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:31:06,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:31:06,041 INFO L85 PathProgramCache]: Analyzing trace with hash -507220766, now seen corresponding path program 8 times [2022-11-20 09:31:06,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:31:06,042 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1315831685] [2022-11-20 09:31:06,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:31:06,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:31:06,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:31:06,618 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:06,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:31:06,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1315831685] [2022-11-20 09:31:06,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1315831685] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:31:06,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1615935674] [2022-11-20 09:31:06,619 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-11-20 09:31:06,619 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:31:06,619 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:31:06,620 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:31:06,647 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-20 09:31:06,878 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-11-20 09:31:06,878 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:31:06,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 24 conjunts are in the unsatisfiable core [2022-11-20 09:31:06,882 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:31:07,845 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:07,845 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:31:22,063 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 17 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:31:22,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1615935674] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:31:22,063 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:31:22,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15, 15] total 37 [2022-11-20 09:31:22,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148910835] [2022-11-20 09:31:22,064 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:31:22,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-11-20 09:31:22,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:31:22,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-11-20 09:31:22,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=135, Invalid=1196, Unknown=1, NotChecked=0, Total=1332 [2022-11-20 09:31:22,068 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-20 09:31:22,070 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) [2022-11-20 09:31:22,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:31:22,071 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-20 09:31:22,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:31:39,268 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:07,078 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:20,589 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.03s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:35,179 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:37,186 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:39,194 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:32:54,766 WARN L233 SmtUtils]: Spent 9.72s on a formula simplification. DAG size of input: 111 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:33:18,676 WARN L233 SmtUtils]: Spent 8.07s on a formula simplification. DAG size of input: 111 DAG size of output: 55 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-20 09:33:37,386 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:39,961 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:33:52,302 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.12s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:34:25,225 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:34:59,916 INFO L130 PetriNetUnfolder]: 11073/34467 cut-off events. [2022-11-20 09:34:59,916 INFO L131 PetriNetUnfolder]: For 993351/993795 co-relation queries the response was YES. [2022-11-20 09:35:00,560 INFO L83 FinitePrefix]: Finished finitePrefix Result has 254848 conditions, 34467 events. 11073/34467 cut-off events. For 993351/993795 co-relation queries the response was YES. Maximal size of possible extension queue 1057. Compared 432442 event pairs, 1738 based on Foata normal form. 234/34375 useless extension candidates. Maximal degree in co-relation 254716. Up to 12822 conditions per place. [2022-11-20 09:35:00,699 INFO L137 encePairwiseOnDemand]: 84/104 looper letters, 769 selfloop transitions, 330 changer transitions 121/1328 dead transitions. [2022-11-20 09:35:00,699 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 491 places, 1328 transitions, 18874 flow [2022-11-20 09:35:00,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 76 states. [2022-11-20 09:35:00,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2022-11-20 09:35:00,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 5420 transitions. [2022-11-20 09:35:00,708 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6857287449392713 [2022-11-20 09:35:00,708 INFO L72 ComplementDD]: Start complementDD. Operand 76 states and 5420 transitions. [2022-11-20 09:35:00,709 INFO L73 IsDeterministic]: Start isDeterministic. Operand 76 states and 5420 transitions. [2022-11-20 09:35:00,710 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:35:00,711 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 76 states and 5420 transitions. [2022-11-20 09:35:00,719 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 77 states, 76 states have (on average 71.3157894736842) internal successors, (5420), 76 states have internal predecessors, (5420), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:00,730 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 77 states, 77 states have (on average 104.0) internal successors, (8008), 77 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:00,733 INFO L81 ComplementDD]: Finished complementDD. Result has 77 states, 77 states have (on average 104.0) internal successors, (8008), 77 states have internal predecessors, (8008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:00,733 INFO L175 Difference]: Start difference. First operand has 416 places, 493 transitions, 5745 flow. Second operand 76 states and 5420 transitions. [2022-11-20 09:35:00,733 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 491 places, 1328 transitions, 18874 flow [2022-11-20 09:35:06,868 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 468 places, 1328 transitions, 16826 flow, removed 753 selfloop flow, removed 23 redundant places. [2022-11-20 09:35:06,881 INFO L231 Difference]: Finished difference. Result has 502 places, 754 transitions, 9895 flow [2022-11-20 09:35:06,881 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=124, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=333, PETRI_DIFFERENCE_SUBTRAHEND_STATES=76, PETRI_FLOW=9895, PETRI_PLACES=502, PETRI_TRANSITIONS=754} [2022-11-20 09:35:06,882 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 410 predicate places. [2022-11-20 09:35:06,882 INFO L495 AbstractCegarLoop]: Abstraction has has 502 places, 754 transitions, 9895 flow [2022-11-20 09:35:06,883 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) [2022-11-20 09:35:06,883 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-20 09:35:06,883 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] [2022-11-20 09:35:06,889 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-11-20 09:35:07,089 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:07,089 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2022-11-20 09:35:07,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-20 09:35:07,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1962668096, now seen corresponding path program 9 times [2022-11-20 09:35:07,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-20 09:35:07,090 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68699159] [2022-11-20 09:35:07,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-20 09:35:07,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-20 09:35:07,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-20 09:35:07,674 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-20 09:35:07,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-20 09:35:07,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68699159] [2022-11-20 09:35:07,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68699159] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-20 09:35:07,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [398745051] [2022-11-20 09:35:07,675 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-11-20 09:35:07,675 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-20 09:35:07,676 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 [2022-11-20 09:35:07,677 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-20 09:35:07,680 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-11-20 09:35:07,954 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-11-20 09:35:07,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-11-20 09:35:07,955 INFO L263 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 19 conjunts are in the unsatisfiable core [2022-11-20 09:35:07,958 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-20 09:35:08,575 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 09:35:08,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-20 09:35:09,763 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-20 09:35:09,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [398745051] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-20 09:35:09,764 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-11-20 09:35:09,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12, 12] total 34 [2022-11-20 09:35:09,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2026095097] [2022-11-20 09:35:09,764 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-11-20 09:35:09,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-11-20 09:35:09,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-20 09:35:09,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-11-20 09:35:09,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=1029, Unknown=0, NotChecked=0, Total=1122 [2022-11-20 09:35:09,768 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 104 [2022-11-20 09:35:09,770 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 502 places, 754 transitions, 9895 flow. Second operand has 34 states, 34 states have (on average 69.82352941176471) internal successors, (2374), 34 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:35:09,770 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-20 09:35:09,770 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 104 [2022-11-20 09:35:09,770 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-20 09:36:10,810 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.02s for a HTC check with result VALID. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:36:12,853 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Bool, Int], hasArrays=false, hasNonlinArith=false, quantifiers [] [2022-11-20 09:36:30,738 INFO L130 PetriNetUnfolder]: 20299/59281 cut-off events. [2022-11-20 09:36:30,738 INFO L131 PetriNetUnfolder]: For 2256113/2257037 co-relation queries the response was YES. [2022-11-20 09:36:32,325 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479147 conditions, 59281 events. 20299/59281 cut-off events. For 2256113/2257037 co-relation queries the response was YES. Maximal size of possible extension queue 1845. Compared 759497 event pairs, 255 based on Foata normal form. 2327/61312 useless extension candidates. Maximal degree in co-relation 478988. Up to 13465 conditions per place. [2022-11-20 09:36:32,388 INFO L137 encePairwiseOnDemand]: 87/104 looper letters, 0 selfloop transitions, 0 changer transitions 3261/3261 dead transitions. [2022-11-20 09:36:32,388 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 650 places, 3261 transitions, 50971 flow [2022-11-20 09:36:32,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 170 states. [2022-11-20 09:36:32,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 170 states. [2022-11-20 09:36:32,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 12208 transitions. [2022-11-20 09:36:32,405 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.6904977375565611 [2022-11-20 09:36:32,405 INFO L72 ComplementDD]: Start complementDD. Operand 170 states and 12208 transitions. [2022-11-20 09:36:32,406 INFO L73 IsDeterministic]: Start isDeterministic. Operand 170 states and 12208 transitions. [2022-11-20 09:36:32,410 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-20 09:36:32,410 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 170 states and 12208 transitions. [2022-11-20 09:36:32,431 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 171 states, 170 states have (on average 71.81176470588235) internal successors, (12208), 170 states have internal predecessors, (12208), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:32,454 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 171 states, 171 states have (on average 104.0) internal successors, (17784), 171 states have internal predecessors, (17784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:32,461 INFO L81 ComplementDD]: Finished complementDD. Result has 171 states, 171 states have (on average 104.0) internal successors, (17784), 171 states have internal predecessors, (17784), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:36:32,461 INFO L175 Difference]: Start difference. First operand has 502 places, 754 transitions, 9895 flow. Second operand 170 states and 12208 transitions. [2022-11-20 09:36:32,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 650 places, 3261 transitions, 50971 flow [2022-11-20 09:37:21,793 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 625 places, 3261 transitions, 44310 flow, removed 2989 selfloop flow, removed 25 redundant places. [2022-11-20 09:37:21,813 INFO L231 Difference]: Finished difference. Result has 625 places, 0 transitions, 0 flow [2022-11-20 09:37:21,814 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=104, PETRI_DIFFERENCE_MINUEND_FLOW=7826, PETRI_DIFFERENCE_MINUEND_PLACES=456, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=733, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=733, PETRI_DIFFERENCE_SUBTRAHEND_STATES=170, PETRI_FLOW=0, PETRI_PLACES=625, PETRI_TRANSITIONS=0} [2022-11-20 09:37:21,814 INFO L288 CegarLoopForPetriNet]: 92 programPoint places, 533 predicate places. [2022-11-20 09:37:21,814 INFO L495 AbstractCegarLoop]: Abstraction has has 625 places, 0 transitions, 0 flow [2022-11-20 09:37:21,815 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 69.82352941176471) internal successors, (2374), 34 states have internal predecessors, (2374), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-20 09:37:21,816 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2022-11-20 09:37:21,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2022-11-20 09:37:21,817 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2022-11-20 09:37:21,822 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-11-20 09:37:22,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2022-11-20 09:37:22,018 INFO L444 BasicCegarLoop]: Path program histogram: [9, 2, 2, 2, 1, 1, 1, 1, 1, 1] [2022-11-20 09:37:22,021 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2022-11-20 09:37:22,021 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2022-11-20 09:37:22,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 09:37:22 BasicIcfg [2022-11-20 09:37:22,026 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-11-20 09:37:22,027 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-20 09:37:22,027 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-20 09:37:22,027 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-20 09:37:22,028 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 09:28:40" (3/4) ... [2022-11-20 09:37:22,031 INFO L137 WitnessPrinter]: Generating witness for correct program [2022-11-20 09:37:22,037 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2022-11-20 09:37:22,038 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2022-11-20 09:37:22,043 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 17 nodes and edges [2022-11-20 09:37:22,043 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2022-11-20 09:37:22,043 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2022-11-20 09:37:22,043 INFO L915 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2022-11-20 09:37:22,089 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/witness.graphml [2022-11-20 09:37:22,090 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-20 09:37:22,091 INFO L158 Benchmark]: Toolchain (without parser) took 522202.50ms. Allocated memory was 178.3MB in the beginning and 9.4GB in the end (delta: 9.3GB). Free memory was 152.5MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 5.1GB. Max. memory is 16.1GB. [2022-11-20 09:37:22,091 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. [2022-11-20 09:37:22,092 INFO L158 Benchmark]: CACSL2BoogieTranslator took 307.05ms. Allocated memory is still 178.3MB. Free memory was 152.1MB in the beginning and 141.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-11-20 09:37:22,092 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.57ms. Allocated memory is still 178.3MB. Free memory was 141.4MB in the beginning and 139.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:37:22,092 INFO L158 Benchmark]: Boogie Preprocessor took 22.79ms. Allocated memory is still 178.3MB. Free memory was 139.4MB in the beginning and 138.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:37:22,093 INFO L158 Benchmark]: RCFGBuilder took 502.51ms. Allocated memory is still 178.3MB. Free memory was 138.2MB in the beginning and 124.0MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-11-20 09:37:22,093 INFO L158 Benchmark]: TraceAbstraction took 521259.43ms. Allocated memory was 178.3MB in the beginning and 9.4GB in the end (delta: 9.3GB). Free memory was 123.5MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 5.6GB. Max. memory is 16.1GB. [2022-11-20 09:37:22,094 INFO L158 Benchmark]: Witness Printer took 63.25ms. Allocated memory is still 9.4GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-20 09:37:22,096 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 119.5MB. Free memory is still 88.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 307.05ms. Allocated memory is still 178.3MB. Free memory was 152.1MB in the beginning and 141.4MB in the end (delta: 10.7MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.57ms. Allocated memory is still 178.3MB. Free memory was 141.4MB in the beginning and 139.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.79ms. Allocated memory is still 178.3MB. Free memory was 139.4MB in the beginning and 138.2MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 502.51ms. Allocated memory is still 178.3MB. Free memory was 138.2MB in the beginning and 124.0MB in the end (delta: 14.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 521259.43ms. Allocated memory was 178.3MB in the beginning and 9.4GB in the end (delta: 9.3GB). Free memory was 123.5MB in the beginning and 4.4GB in the end (delta: -4.2GB). Peak memory consumption was 5.6GB. Max. memory is 16.1GB. * Witness Printer took 63.25ms. Allocated memory is still 9.4GB. Free memory was 4.4GB in the beginning and 4.4GB in the end (delta: 3.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 99]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 121 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 521.1s, OverallIterations: 21, TraceHistogramMax: 3, PathProgramHistogramMax: 9, EmptinessCheckTime: 0.0s, AutomataDifference: 482.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 10 mSolverCounterUnknown, 4341 SdHoareTripleChecker+Valid, 71.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 4341 mSDsluCounter, 4455 SdHoareTripleChecker+Invalid, 67.7s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 4018 mSDsCounter, 337 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 15486 IncrementalHoareTripleChecker+Invalid, 15833 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 337 mSolverCounterUnsat, 437 mSDtfsCounter, 15486 mSolverCounterSat, 0.2s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3105 GetRequests, 2436 SyntacticMatches, 18 SemanticMatches, 651 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24505 ImplicationChecksByTransitivity, 307.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=9895occurred in iteration=20, InterpolantAutomatonStates: 537, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.3s SsaConstructionTime, 1.9s SatisfiabilityAnalysisTime, 32.5s InterpolantComputationTime, 3206 NumberOfCodeBlocks, 3206 NumberOfCodeBlocksAsserted, 47 NumberOfCheckSat, 4377 ConstructedInterpolants, 0 QuantifiedInterpolants, 29590 SizeOfPredicates, 143 NumberOfNonLiveVariables, 2748 ConjunctsInSsa, 212 ConjunctsInUnsatCore, 48 InterpolantComputations, 8 PerfectInterpolantSequences, 203/679 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2022-11-20 09:37:22,126 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_6c94ee5c-1d8c-448d-a731-6a6eba22bd8d/bin/uautomizer-ug76WZFUDN/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE