./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e04fb08f 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_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8 --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 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b --- 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-e04fb08 [2022-11-16 11:02:49,282 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 11:02:49,288 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 11:02:49,320 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 11:02:49,321 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 11:02:49,327 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 11:02:49,330 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 11:02:49,340 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 11:02:49,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 11:02:49,344 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 11:02:49,346 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 11:02:49,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 11:02:49,350 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 11:02:49,358 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 11:02:49,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 11:02:49,361 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 11:02:49,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 11:02:49,365 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 11:02:49,368 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 11:02:49,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 11:02:49,379 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 11:02:49,380 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 11:02:49,381 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 11:02:49,382 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 11:02:49,386 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 11:02:49,386 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 11:02:49,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 11:02:49,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 11:02:49,388 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 11:02:49,389 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 11:02:49,390 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 11:02:49,391 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 11:02:49,391 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 11:02:49,392 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 11:02:49,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 11:02:49,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 11:02:49,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 11:02:49,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 11:02:49,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 11:02:49,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 11:02:49,397 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 11:02:49,398 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-11-16 11:02:49,426 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 11:02:49,426 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 11:02:49,426 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 11:02:49,427 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 11:02:49,427 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-16 11:02:49,428 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-16 11:02:49,428 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 11:02:49,428 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 11:02:49,429 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 11:02:49,429 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 11:02:49,429 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-16 11:02:49,429 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 11:02:49,430 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-16 11:02:49,430 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 11:02:49,430 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-16 11:02:49,430 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-16 11:02:49,430 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-16 11:02:49,431 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-16 11:02:49,431 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 11:02:49,431 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 11:02:49,431 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-16 11:02:49,431 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 11:02:49,432 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 11:02:49,432 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-16 11:02:49,432 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:02:49,432 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 11:02:49,433 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-16 11:02:49,433 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-16 11:02:49,433 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 11:02:49,433 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-16 11:02:49,433 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-11-16 11:02:49,434 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-11-16 11:02:49,434 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-16 11:02:49,434 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_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7850c8f92b7e0b0b866687e8f3ea719169cacbc5985a977f15b280bf9bb53b5b [2022-11-16 11:02:49,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 11:02:49,788 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 11:02:49,791 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 11:02:49,793 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 11:02:49,794 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 11:02:49,795 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-11-16 11:02:49,864 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/data/33fb4ec9c/211b0bcb9c6243ae8621164067923b84/FLAG70d5a1957 [2022-11-16 11:02:50,459 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 11:02:50,460 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c [2022-11-16 11:02:50,468 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/data/33fb4ec9c/211b0bcb9c6243ae8621164067923b84/FLAG70d5a1957 [2022-11-16 11:02:50,805 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/data/33fb4ec9c/211b0bcb9c6243ae8621164067923b84 [2022-11-16 11:02:50,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 11:02:50,810 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 11:02:50,812 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 11:02:50,813 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 11:02:50,817 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 11:02:50,818 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:02:50" (1/1) ... [2022-11-16 11:02:50,820 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@51414842 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:50, skipping insertion in model container [2022-11-16 11:02:50,820 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 11:02:50" (1/1) ... [2022-11-16 11:02:50,830 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 11:02:50,850 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 11:02:51,134 WARN L229 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_679e71ef-e254-405e-87c7-0a334c97fca3/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-11-16 11:02:51,146 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:02:51,157 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 11:02:51,185 WARN L229 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_679e71ef-e254-405e-87c7-0a334c97fca3/sv-benchmarks/c/weaver/chl-file-item-trans.wvr.c[2817,2830] [2022-11-16 11:02:51,189 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 11:02:51,204 INFO L208 MainTranslator]: Completed translation [2022-11-16 11:02:51,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51 WrapperNode [2022-11-16 11:02:51,205 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 11:02:51,207 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 11:02:51,207 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 11:02:51,207 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 11:02:51,218 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,228 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,260 INFO L138 Inliner]: procedures = 23, calls = 30, calls flagged for inlining = 8, calls inlined = 12, statements flattened = 193 [2022-11-16 11:02:51,260 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 11:02:51,261 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 11:02:51,262 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 11:02:51,262 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 11:02:51,273 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,277 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,278 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,284 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,288 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,290 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,292 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,295 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 11:02:51,296 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 11:02:51,296 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 11:02:51,297 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 11:02:51,298 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (1/1) ... [2022-11-16 11:02:51,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-16 11:02:51,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 11:02:51,333 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-16 11:02:51,369 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_679e71ef-e254-405e-87c7-0a334c97fca3/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-16 11:02:51,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-16 11:02:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2022-11-16 11:02:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2022-11-16 11:02:51,402 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2022-11-16 11:02:51,402 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2022-11-16 11:02:51,403 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2022-11-16 11:02:51,403 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2022-11-16 11:02:51,405 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-16 11:02:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-11-16 11:02:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-11-16 11:02:51,406 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 11:02:51,406 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 11:02:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-11-16 11:02:51,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-11-16 11:02:51,409 WARN L209 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2022-11-16 11:02:51,553 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 11:02:51,555 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 11:02:52,107 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 11:02:52,118 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 11:02:52,127 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 11:02:52,130 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:02:52 BoogieIcfgContainer [2022-11-16 11:02:52,132 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 11:02:52,135 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-16 11:02:52,137 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-16 11:02:52,141 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-16 11:02:52,141 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 11:02:50" (1/3) ... [2022-11-16 11:02:52,142 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bbe3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:02:52, skipping insertion in model container [2022-11-16 11:02:52,142 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 11:02:51" (2/3) ... [2022-11-16 11:02:52,143 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@27bbe3ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 11:02:52, skipping insertion in model container [2022-11-16 11:02:52,143 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 11:02:52" (3/3) ... [2022-11-16 11:02:52,144 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-file-item-trans.wvr.c [2022-11-16 11:02:52,158 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2022-11-16 11:02:52,171 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-16 11:02:52,171 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-16 11:02:52,172 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2022-11-16 11:02:52,329 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2022-11-16 11:02:52,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 239 places, 248 transitions, 520 flow [2022-11-16 11:02:52,624 INFO L130 PetriNetUnfolder]: 19/245 cut-off events. [2022-11-16 11:02:52,624 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:02:52,636 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 245 events. 19/245 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 560 event pairs, 0 based on Foata normal form. 0/225 useless extension candidates. Maximal degree in co-relation 169. Up to 2 conditions per place. [2022-11-16 11:02:52,637 INFO L82 GeneralOperation]: Start removeDead. Operand has 239 places, 248 transitions, 520 flow [2022-11-16 11:02:52,651 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 225 places, 234 transitions, 486 flow [2022-11-16 11:02:52,679 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-16 11:02:52,689 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;@735b146a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-16 11:02:52,690 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2022-11-16 11:02:52,797 INFO L130 PetriNetUnfolder]: 19/233 cut-off events. [2022-11-16 11:02:52,800 INFO L131 PetriNetUnfolder]: For 3/3 co-relation queries the response was YES. [2022-11-16 11:02:52,800 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:02:52,801 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:52,803 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:02:52,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:52,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1983215944, now seen corresponding path program 1 times [2022-11-16 11:02:52,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:52,824 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045448157] [2022-11-16 11:02:52,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:52,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:53,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:02:53,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:53,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045448157] [2022-11-16 11:02:54,000 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045448157] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:54,000 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:54,001 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:02:54,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812142609] [2022-11-16 11:02:54,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:54,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:02:54,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:54,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:02:54,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:02:54,091 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 248 [2022-11-16 11:02:54,102 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 234 transitions, 486 flow. Second operand has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:54,102 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:02:54,102 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 248 [2022-11-16 11:02:54,104 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:02:54,906 INFO L130 PetriNetUnfolder]: 164/1630 cut-off events. [2022-11-16 11:02:54,906 INFO L131 PetriNetUnfolder]: For 97/97 co-relation queries the response was YES. [2022-11-16 11:02:54,945 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1936 conditions, 1630 events. 164/1630 cut-off events. For 97/97 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 14368 event pairs, 21 based on Foata normal form. 85/1533 useless extension candidates. Maximal degree in co-relation 1728. Up to 43 conditions per place. [2022-11-16 11:02:54,957 INFO L137 encePairwiseOnDemand]: 227/248 looper letters, 49 selfloop transitions, 18 changer transitions 11/283 dead transitions. [2022-11-16 11:02:54,957 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 237 places, 283 transitions, 803 flow [2022-11-16 11:02:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-16 11:02:54,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2022-11-16 11:02:54,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 2943 transitions. [2022-11-16 11:02:54,991 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9128411910669976 [2022-11-16 11:02:54,992 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 2943 transitions. [2022-11-16 11:02:54,993 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 2943 transitions. [2022-11-16 11:02:54,999 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:02:55,002 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 2943 transitions. [2022-11-16 11:02:55,016 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 226.3846153846154) internal successors, (2943), 13 states have internal predecessors, (2943), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:55,033 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 248.0) internal successors, (3472), 14 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:55,036 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 248.0) internal successors, (3472), 14 states have internal predecessors, (3472), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:55,039 INFO L175 Difference]: Start difference. First operand has 225 places, 234 transitions, 486 flow. Second operand 13 states and 2943 transitions. [2022-11-16 11:02:55,041 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 237 places, 283 transitions, 803 flow [2022-11-16 11:02:55,053 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 231 places, 283 transitions, 749 flow, removed 0 selfloop flow, removed 6 redundant places. [2022-11-16 11:02:55,063 INFO L231 Difference]: Finished difference. Result has 238 places, 241 transitions, 577 flow [2022-11-16 11:02:55,066 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=460, PETRI_DIFFERENCE_MINUEND_PLACES=219, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=227, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=577, PETRI_PLACES=238, PETRI_TRANSITIONS=241} [2022-11-16 11:02:55,073 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 13 predicate places. [2022-11-16 11:02:55,074 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 241 transitions, 577 flow [2022-11-16 11:02:55,075 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:55,076 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:02:55,076 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:55,076 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-16 11:02:55,077 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:02:55,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:55,078 INFO L85 PathProgramCache]: Analyzing trace with hash -1537653204, now seen corresponding path program 2 times [2022-11-16 11:02:55,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:55,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1231389504] [2022-11-16 11:02:55,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:55,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:55,649 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:02:55,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:55,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1231389504] [2022-11-16 11:02:55,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1231389504] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:55,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:55,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:02:55,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151628011] [2022-11-16 11:02:55,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:55,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:02:55,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:55,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:02:55,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:02:55,677 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 218 out of 248 [2022-11-16 11:02:55,680 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 241 transitions, 577 flow. Second operand has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:55,681 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:02:55,681 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 218 of 248 [2022-11-16 11:02:55,687 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:02:56,308 INFO L130 PetriNetUnfolder]: 149/1458 cut-off events. [2022-11-16 11:02:56,309 INFO L131 PetriNetUnfolder]: For 179/185 co-relation queries the response was YES. [2022-11-16 11:02:56,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1938 conditions, 1458 events. 149/1458 cut-off events. For 179/185 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 12460 event pairs, 31 based on Foata normal form. 1/1322 useless extension candidates. Maximal degree in co-relation 1913. Up to 93 conditions per place. [2022-11-16 11:02:56,337 INFO L137 encePairwiseOnDemand]: 240/248 looper letters, 40 selfloop transitions, 12 changer transitions 4/261 dead transitions. [2022-11-16 11:02:56,338 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 261 transitions, 767 flow [2022-11-16 11:02:56,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:02:56,338 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:02:56,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2008 transitions. [2022-11-16 11:02:56,346 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.899641577060932 [2022-11-16 11:02:56,347 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2008 transitions. [2022-11-16 11:02:56,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2008 transitions. [2022-11-16 11:02:56,349 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:02:56,349 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2008 transitions. [2022-11-16 11:02:56,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 223.11111111111111) internal successors, (2008), 9 states have internal predecessors, (2008), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:56,364 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:56,367 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:56,367 INFO L175 Difference]: Start difference. First operand has 238 places, 241 transitions, 577 flow. Second operand 9 states and 2008 transitions. [2022-11-16 11:02:56,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 261 transitions, 767 flow [2022-11-16 11:02:56,376 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 238 places, 261 transitions, 761 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 11:02:56,388 INFO L231 Difference]: Finished difference. Result has 242 places, 246 transitions, 650 flow [2022-11-16 11:02:56,389 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=573, PETRI_DIFFERENCE_MINUEND_PLACES=230, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=241, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=231, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=650, PETRI_PLACES=242, PETRI_TRANSITIONS=246} [2022-11-16 11:02:56,390 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 17 predicate places. [2022-11-16 11:02:56,391 INFO L495 AbstractCegarLoop]: Abstraction has has 242 places, 246 transitions, 650 flow [2022-11-16 11:02:56,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 220.42857142857142) internal successors, (1543), 7 states have internal predecessors, (1543), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:56,393 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:02:56,394 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:56,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-16 11:02:56,395 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:02:56,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:56,396 INFO L85 PathProgramCache]: Analyzing trace with hash 489608282, now seen corresponding path program 3 times [2022-11-16 11:02:56,397 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:56,397 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [758365210] [2022-11-16 11:02:56,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:56,398 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:56,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:56,752 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:02:56,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:56,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [758365210] [2022-11-16 11:02:56,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [758365210] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:56,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:56,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:02:56,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [587273164] [2022-11-16 11:02:56,757 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:56,759 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:02:56,759 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:56,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:02:56,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:02:56,772 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 214 out of 248 [2022-11-16 11:02:56,776 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 242 places, 246 transitions, 650 flow. Second operand has 8 states, 8 states have (on average 216.625) internal successors, (1733), 8 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:56,776 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:02:56,776 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 214 of 248 [2022-11-16 11:02:56,776 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:02:57,622 INFO L130 PetriNetUnfolder]: 436/2980 cut-off events. [2022-11-16 11:02:57,622 INFO L131 PetriNetUnfolder]: For 764/771 co-relation queries the response was YES. [2022-11-16 11:02:57,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4340 conditions, 2980 events. 436/2980 cut-off events. For 764/771 co-relation queries the response was YES. Maximal size of possible extension queue 158. Compared 30167 event pairs, 124 based on Foata normal form. 21/2733 useless extension candidates. Maximal degree in co-relation 4307. Up to 179 conditions per place. [2022-11-16 11:02:57,665 INFO L137 encePairwiseOnDemand]: 236/248 looper letters, 60 selfloop transitions, 16 changer transitions 7/284 dead transitions. [2022-11-16 11:02:57,665 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 248 places, 284 transitions, 970 flow [2022-11-16 11:02:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:02:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:02:57,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1994 transitions. [2022-11-16 11:02:57,672 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8933691756272402 [2022-11-16 11:02:57,672 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1994 transitions. [2022-11-16 11:02:57,672 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1994 transitions. [2022-11-16 11:02:57,674 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:02:57,676 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1994 transitions. [2022-11-16 11:02:57,681 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 221.55555555555554) internal successors, (1994), 9 states have internal predecessors, (1994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:57,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:57,687 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:57,688 INFO L175 Difference]: Start difference. First operand has 242 places, 246 transitions, 650 flow. Second operand 9 states and 1994 transitions. [2022-11-16 11:02:57,688 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 248 places, 284 transitions, 970 flow [2022-11-16 11:02:57,698 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 246 places, 284 transitions, 956 flow, removed 7 selfloop flow, removed 2 redundant places. [2022-11-16 11:02:57,702 INFO L231 Difference]: Finished difference. Result has 253 places, 251 transitions, 763 flow [2022-11-16 11:02:57,703 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=642, PETRI_DIFFERENCE_MINUEND_PLACES=238, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=246, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=232, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=763, PETRI_PLACES=253, PETRI_TRANSITIONS=251} [2022-11-16 11:02:57,706 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 28 predicate places. [2022-11-16 11:02:57,706 INFO L495 AbstractCegarLoop]: Abstraction has has 253 places, 251 transitions, 763 flow [2022-11-16 11:02:57,707 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 216.625) internal successors, (1733), 8 states have internal predecessors, (1733), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:57,708 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:02:57,708 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:57,708 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-16 11:02:57,708 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:02:57,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:57,710 INFO L85 PathProgramCache]: Analyzing trace with hash -1258656304, now seen corresponding path program 1 times [2022-11-16 11:02:57,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:57,711 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980691815] [2022-11-16 11:02:57,711 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:57,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:58,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:02:58,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:58,053 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980691815] [2022-11-16 11:02:58,054 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980691815] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:58,054 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:58,054 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:02:58,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236389226] [2022-11-16 11:02:58,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:58,057 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:02:58,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:58,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:02:58,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:02:58,065 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 248 [2022-11-16 11:02:58,070 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 253 places, 251 transitions, 763 flow. Second operand has 7 states, 7 states have (on average 219.85714285714286) internal successors, (1539), 7 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:58,070 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:02:58,070 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 248 [2022-11-16 11:02:58,070 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:02:59,142 INFO L130 PetriNetUnfolder]: 685/3680 cut-off events. [2022-11-16 11:02:59,142 INFO L131 PetriNetUnfolder]: For 3473/4027 co-relation queries the response was YES. [2022-11-16 11:02:59,176 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6559 conditions, 3680 events. 685/3680 cut-off events. For 3473/4027 co-relation queries the response was YES. Maximal size of possible extension queue 234. Compared 39850 event pairs, 151 based on Foata normal form. 110/3629 useless extension candidates. Maximal degree in co-relation 6521. Up to 751 conditions per place. [2022-11-16 11:02:59,202 INFO L137 encePairwiseOnDemand]: 237/248 looper letters, 52 selfloop transitions, 29 changer transitions 4/308 dead transitions. [2022-11-16 11:02:59,203 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 259 places, 308 transitions, 1306 flow [2022-11-16 11:02:59,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:02:59,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:02:59,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2015 transitions. [2022-11-16 11:02:59,209 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9027777777777778 [2022-11-16 11:02:59,209 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2015 transitions. [2022-11-16 11:02:59,209 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2015 transitions. [2022-11-16 11:02:59,211 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:02:59,212 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2015 transitions. [2022-11-16 11:02:59,218 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 223.88888888888889) internal successors, (2015), 9 states have internal predecessors, (2015), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:59,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:59,229 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:59,229 INFO L175 Difference]: Start difference. First operand has 253 places, 251 transitions, 763 flow. Second operand 9 states and 2015 transitions. [2022-11-16 11:02:59,229 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 259 places, 308 transitions, 1306 flow [2022-11-16 11:02:59,301 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 255 places, 308 transitions, 1264 flow, removed 8 selfloop flow, removed 4 redundant places. [2022-11-16 11:02:59,311 INFO L231 Difference]: Finished difference. Result has 262 places, 278 transitions, 1097 flow [2022-11-16 11:02:59,312 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=741, PETRI_DIFFERENCE_MINUEND_PLACES=247, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=251, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=237, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1097, PETRI_PLACES=262, PETRI_TRANSITIONS=278} [2022-11-16 11:02:59,314 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 37 predicate places. [2022-11-16 11:02:59,316 INFO L495 AbstractCegarLoop]: Abstraction has has 262 places, 278 transitions, 1097 flow [2022-11-16 11:02:59,317 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 219.85714285714286) internal successors, (1539), 7 states have internal predecessors, (1539), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:59,317 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:02:59,317 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:02:59,317 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-16 11:02:59,318 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:02:59,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:02:59,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1370511180, now seen corresponding path program 2 times [2022-11-16 11:02:59,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:02:59,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616482238] [2022-11-16 11:02:59,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:02:59,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:02:59,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:02:59,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:02:59,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:02:59,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616482238] [2022-11-16 11:02:59,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616482238] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:02:59,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:02:59,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:02:59,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1685445081] [2022-11-16 11:02:59,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:02:59,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:02:59,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:02:59,524 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:02:59,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:02:59,527 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 221 out of 248 [2022-11-16 11:02:59,529 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 278 transitions, 1097 flow. Second operand has 7 states, 7 states have (on average 223.28571428571428) internal successors, (1563), 7 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:02:59,530 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:02:59,531 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 221 of 248 [2022-11-16 11:02:59,531 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:00,028 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L50-21-->L50-22: Formula: (= |v_thread2Thread1of1ForFork2_#t~ite10#1_3| v_~result_10~0_1) InVars {thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|, ~result_10~0=v_~result_10~0_1} AuxVars[] AssignedVars[~result_10~0][128], [Black: 303#(<= ~result_9~0 0), Black: 311#(and (<= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), 161#L50-22true, Black: 250#(and (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 245#(or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0)), 353#true, Black: 246#(<= ~result_9~0 0), 277#true, Black: 252#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 258#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 181#L44-22true, 242#true, Black: 329#(or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)), Black: 337#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 335#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 344#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 327#(<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0), 92#L77-4true, Black: 333#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0)), Black: 342#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 132#L56-22true, Black: 285#(and (or (and (= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))) (and (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 1))) (<= ~result_9~0 0)), 325#true, 301#(not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256)))), Black: 308#(and (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), Black: 299#true]) [2022-11-16 11:03:00,029 INFO L383 tUnfolder$Statistics]: this new event has 79 ancestors and is cut-off event [2022-11-16 11:03:00,029 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-11-16 11:03:00,030 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-16 11:03:00,030 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-16 11:03:00,515 INFO L130 PetriNetUnfolder]: 430/2721 cut-off events. [2022-11-16 11:03:00,515 INFO L131 PetriNetUnfolder]: For 3876/4283 co-relation queries the response was YES. [2022-11-16 11:03:00,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5657 conditions, 2721 events. 430/2721 cut-off events. For 3876/4283 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 28776 event pairs, 136 based on Foata normal form. 102/2695 useless extension candidates. Maximal degree in co-relation 5614. Up to 399 conditions per place. [2022-11-16 11:03:00,581 INFO L137 encePairwiseOnDemand]: 240/248 looper letters, 29 selfloop transitions, 10 changer transitions 4/294 dead transitions. [2022-11-16 11:03:00,581 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 294 transitions, 1239 flow [2022-11-16 11:03:00,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:03:00,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:03:00,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2027 transitions. [2022-11-16 11:03:00,588 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9081541218637993 [2022-11-16 11:03:00,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2027 transitions. [2022-11-16 11:03:00,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2027 transitions. [2022-11-16 11:03:00,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:00,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2027 transitions. [2022-11-16 11:03:00,599 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 225.22222222222223) internal successors, (2027), 9 states have internal predecessors, (2027), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:00,605 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:00,607 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:00,607 INFO L175 Difference]: Start difference. First operand has 262 places, 278 transitions, 1097 flow. Second operand 9 states and 2027 transitions. [2022-11-16 11:03:00,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 268 places, 294 transitions, 1239 flow [2022-11-16 11:03:00,631 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 266 places, 294 transitions, 1233 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:00,644 INFO L231 Difference]: Finished difference. Result has 270 places, 279 transitions, 1133 flow [2022-11-16 11:03:00,645 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1093, PETRI_DIFFERENCE_MINUEND_PLACES=258, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=278, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=268, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1133, PETRI_PLACES=270, PETRI_TRANSITIONS=279} [2022-11-16 11:03:00,648 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 45 predicate places. [2022-11-16 11:03:00,648 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 279 transitions, 1133 flow [2022-11-16 11:03:00,649 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 223.28571428571428) internal successors, (1563), 7 states have internal predecessors, (1563), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:00,650 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:00,651 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:00,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-16 11:03:00,652 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:00,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:00,653 INFO L85 PathProgramCache]: Analyzing trace with hash -410799852, now seen corresponding path program 1 times [2022-11-16 11:03:00,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:00,654 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2077397221] [2022-11-16 11:03:00,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:00,654 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:00,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:00,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:00,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:00,738 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2077397221] [2022-11-16 11:03:00,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2077397221] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:00,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:00,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:03:00,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388788529] [2022-11-16 11:03:00,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:00,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:00,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:00,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:00,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:00,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 248 [2022-11-16 11:03:00,746 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 279 transitions, 1133 flow. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:00,746 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:00,746 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 248 [2022-11-16 11:03:00,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:01,339 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L50-21-->L50-22: Formula: (= |v_thread2Thread1of1ForFork2_#t~ite10#1_3| v_~result_10~0_1) InVars {thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|, ~result_10~0=v_~result_10~0_1} AuxVars[] AssignedVars[~result_10~0][125], [Black: 303#(<= ~result_9~0 0), Black: 311#(and (<= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), 161#L50-22true, Black: 250#(and (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 245#(or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0)), 353#true, Black: 246#(<= ~result_9~0 0), Black: 252#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 277#true, Black: 258#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 181#L44-22true, 242#true, Black: 329#(or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)), Black: 337#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 335#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 327#(<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0), 92#L77-4true, Black: 333#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0)), 132#L56-22true, Black: 285#(and (or (and (= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))) (and (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 1))) (<= ~result_9~0 0)), 325#true, Black: 361#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 370#(and (<= (+ ~result_10~0 1) 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 372#(and (<= (+ ~result_10~0 1) 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 301#(not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256)))), Black: 357#(<= (+ ~result_10~0 1) 0), 380#(not (= (* (div ~isNull_0~0 256) 256) ~isNull_0~0)), Black: 308#(and (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), Black: 299#true]) [2022-11-16 11:03:01,340 INFO L383 tUnfolder$Statistics]: this new event has 79 ancestors and is cut-off event [2022-11-16 11:03:01,340 INFO L386 tUnfolder$Statistics]: existing Event has 75 ancestors and is cut-off event [2022-11-16 11:03:01,340 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-16 11:03:01,340 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-16 11:03:01,424 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L50-21-->L50-22: Formula: (= |v_thread2Thread1of1ForFork2_#t~ite10#1_3| v_~result_10~0_1) InVars {thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|, ~result_10~0=v_~result_10~0_1} AuxVars[] AssignedVars[~result_10~0][125], [Black: 303#(<= ~result_9~0 0), Black: 311#(and (<= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), 161#L50-22true, Black: 250#(and (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 245#(or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0)), 353#true, Black: 246#(<= ~result_9~0 0), Black: 252#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 277#true, Black: 258#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 181#L44-22true, 242#true, Black: 329#(or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)), Black: 337#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 335#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 327#(<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0), 92#L77-4true, Black: 333#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0)), 132#L56-22true, 378#true, Black: 285#(and (or (and (= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))) (and (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 1))) (<= ~result_9~0 0)), 325#true, Black: 361#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 370#(and (<= (+ ~result_10~0 1) 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), Black: 372#(and (<= (+ ~result_10~0 1) 0) (= |ULTIMATE.start_assume_abort_if_not_~cond#1| 0) (= |ULTIMATE.start_assume_abort_if_not_#in~cond#1| 0)), 301#(not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256)))), Black: 357#(<= (+ ~result_10~0 1) 0), Black: 308#(and (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), Black: 299#true]) [2022-11-16 11:03:01,425 INFO L383 tUnfolder$Statistics]: this new event has 81 ancestors and is cut-off event [2022-11-16 11:03:01,425 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-16 11:03:01,425 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-16 11:03:01,425 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-16 11:03:02,081 INFO L130 PetriNetUnfolder]: 574/5515 cut-off events. [2022-11-16 11:03:02,081 INFO L131 PetriNetUnfolder]: For 5699/6200 co-relation queries the response was YES. [2022-11-16 11:03:02,143 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9560 conditions, 5515 events. 574/5515 cut-off events. For 5699/6200 co-relation queries the response was YES. Maximal size of possible extension queue 250. Compared 64920 event pairs, 88 based on Foata normal form. 110/5181 useless extension candidates. Maximal degree in co-relation 9502. Up to 427 conditions per place. [2022-11-16 11:03:02,165 INFO L137 encePairwiseOnDemand]: 244/248 looper letters, 17 selfloop transitions, 2 changer transitions 0/286 dead transitions. [2022-11-16 11:03:02,165 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 270 places, 286 transitions, 1190 flow [2022-11-16 11:03:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:02,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:02,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-11-16 11:03:02,169 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9475806451612904 [2022-11-16 11:03:02,169 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-11-16 11:03:02,169 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-11-16 11:03:02,170 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:02,170 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-11-16 11:03:02,172 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:02,174 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:02,175 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:02,175 INFO L175 Difference]: Start difference. First operand has 270 places, 279 transitions, 1133 flow. Second operand 3 states and 705 transitions. [2022-11-16 11:03:02,176 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 270 places, 286 transitions, 1190 flow [2022-11-16 11:03:02,212 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 267 places, 286 transitions, 1184 flow, removed 2 selfloop flow, removed 3 redundant places. [2022-11-16 11:03:02,217 INFO L231 Difference]: Finished difference. Result has 269 places, 281 transitions, 1147 flow [2022-11-16 11:03:02,218 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1127, PETRI_DIFFERENCE_MINUEND_PLACES=265, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=279, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1147, PETRI_PLACES=269, PETRI_TRANSITIONS=281} [2022-11-16 11:03:02,223 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 44 predicate places. [2022-11-16 11:03:02,225 INFO L495 AbstractCegarLoop]: Abstraction has has 269 places, 281 transitions, 1147 flow [2022-11-16 11:03:02,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:02,226 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:02,226 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:02,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-16 11:03:02,227 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:02,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:02,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1543982006, now seen corresponding path program 2 times [2022-11-16 11:03:02,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:02,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276371594] [2022-11-16 11:03:02,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:02,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:02,295 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:02,295 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:02,296 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276371594] [2022-11-16 11:03:02,296 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276371594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:02,296 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:02,296 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:03:02,302 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1908921813] [2022-11-16 11:03:02,302 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:02,303 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:02,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:02,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:02,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:02,305 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 228 out of 248 [2022-11-16 11:03:02,306 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 269 places, 281 transitions, 1147 flow. Second operand has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:02,306 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:02,307 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 228 of 248 [2022-11-16 11:03:02,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:02,808 INFO L381 tUnfolder$Statistics]: inserting event number 4 for the transition-marking pair ([626] L50-21-->L50-22: Formula: (= |v_thread2Thread1of1ForFork2_#t~ite10#1_3| v_~result_10~0_1) InVars {thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|} OutVars{thread2Thread1of1ForFork2_#t~ite10#1=|v_thread2Thread1of1ForFork2_#t~ite10#1_3|, ~result_10~0=v_~result_10~0_1} AuxVars[] AssignedVars[~result_10~0][125], [Black: 303#(<= ~result_9~0 0), Black: 311#(and (<= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), 161#L50-22true, Black: 250#(and (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 245#(or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0)), Black: 246#(<= ~result_9~0 0), 277#true, Black: 252#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 0)) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), Black: 258#(and (<= ~result_9~0 0) (or (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= ~result_9~0 0))), 181#L44-22true, 242#true, Black: 329#(or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)), Black: 337#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), Black: 335#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), 92#L77-4true, Black: 327#(<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0), Black: 333#(and (or (<= ~result_10~0 0) (< 0 ~result_11~0) (<= ~result_9~0 0)) (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0)), 378#true, 132#L56-22true, Black: 285#(and (or (and (= |thread1Thread1of1ForFork1_#t~ite5#1| 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))) (and (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))) (= |thread1Thread1of1ForFork1_#t~ite5#1| 1))) (<= ~result_9~0 0)), 325#true, 386#(= (* (div ~isNull_0~0 256) 256) ~isNull_0~0), Black: 361#(and (<= (+ |thread2Thread1of1ForFork2_#t~ite9#1| 1) 0) (<= (+ |thread2Thread1of1ForFork2_#t~ite10#1| 1) 0)), 301#(not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256)))), Black: 357#(<= (+ ~result_10~0 1) 0), Black: 308#(and (<= ~result_9~0 0) (not (= ~isNull_3~0 (* 256 (div ~isNull_3~0 256))))), Black: 380#(not (= (* (div ~isNull_0~0 256) 256) ~isNull_0~0)), Black: 299#true]) [2022-11-16 11:03:02,808 INFO L383 tUnfolder$Statistics]: this new event has 81 ancestors and is cut-off event [2022-11-16 11:03:02,809 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-16 11:03:02,809 INFO L386 tUnfolder$Statistics]: existing Event has 77 ancestors and is cut-off event [2022-11-16 11:03:02,809 INFO L386 tUnfolder$Statistics]: existing Event has 79 ancestors and is cut-off event [2022-11-16 11:03:03,438 INFO L130 PetriNetUnfolder]: 411/4539 cut-off events. [2022-11-16 11:03:03,438 INFO L131 PetriNetUnfolder]: For 4099/4475 co-relation queries the response was YES. [2022-11-16 11:03:03,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7592 conditions, 4539 events. 411/4539 cut-off events. For 4099/4475 co-relation queries the response was YES. Maximal size of possible extension queue 180. Compared 50978 event pairs, 80 based on Foata normal form. 100/4313 useless extension candidates. Maximal degree in co-relation 6472. Up to 305 conditions per place. [2022-11-16 11:03:03,509 INFO L137 encePairwiseOnDemand]: 242/248 looper letters, 17 selfloop transitions, 4 changer transitions 0/288 dead transitions. [2022-11-16 11:03:03,510 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 271 places, 288 transitions, 1212 flow [2022-11-16 11:03:03,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:03,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:03,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 705 transitions. [2022-11-16 11:03:03,516 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9475806451612904 [2022-11-16 11:03:03,516 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 705 transitions. [2022-11-16 11:03:03,516 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 705 transitions. [2022-11-16 11:03:03,517 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:03,517 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 705 transitions. [2022-11-16 11:03:03,520 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 235.0) internal successors, (705), 3 states have internal predecessors, (705), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:03,522 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:03,523 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:03,524 INFO L175 Difference]: Start difference. First operand has 269 places, 281 transitions, 1147 flow. Second operand 3 states and 705 transitions. [2022-11-16 11:03:03,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 271 places, 288 transitions, 1212 flow [2022-11-16 11:03:03,561 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 270 places, 288 transitions, 1210 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:03:03,568 INFO L231 Difference]: Finished difference. Result has 272 places, 283 transitions, 1177 flow [2022-11-16 11:03:03,569 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1145, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=281, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=277, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1177, PETRI_PLACES=272, PETRI_TRANSITIONS=283} [2022-11-16 11:03:03,570 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 47 predicate places. [2022-11-16 11:03:03,570 INFO L495 AbstractCegarLoop]: Abstraction has has 272 places, 283 transitions, 1177 flow [2022-11-16 11:03:03,571 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 231.33333333333334) internal successors, (694), 3 states have internal predecessors, (694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:03,571 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:03,571 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:03,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-16 11:03:03,572 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:03,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:03,573 INFO L85 PathProgramCache]: Analyzing trace with hash -1064738514, now seen corresponding path program 1 times [2022-11-16 11:03:03,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:03,574 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1582217704] [2022-11-16 11:03:03,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:03,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:03,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:03,969 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:03,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:03,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1582217704] [2022-11-16 11:03:03,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1582217704] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:03,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:03,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:03:03,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411896237] [2022-11-16 11:03:03,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:03,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:03:03,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:03,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:03:03,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:03:03,975 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 248 [2022-11-16 11:03:03,978 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 272 places, 283 transitions, 1177 flow. Second operand has 8 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:03,979 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:03,979 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 248 [2022-11-16 11:03:03,979 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:06,003 INFO L130 PetriNetUnfolder]: 1448/8650 cut-off events. [2022-11-16 11:03:06,004 INFO L131 PetriNetUnfolder]: For 13846/14847 co-relation queries the response was YES. [2022-11-16 11:03:06,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17257 conditions, 8650 events. 1448/8650 cut-off events. For 13846/14847 co-relation queries the response was YES. Maximal size of possible extension queue 462. Compared 111351 event pairs, 248 based on Foata normal form. 351/8316 useless extension candidates. Maximal degree in co-relation 15001. Up to 1663 conditions per place. [2022-11-16 11:03:06,128 INFO L137 encePairwiseOnDemand]: 238/248 looper letters, 78 selfloop transitions, 35 changer transitions 39/380 dead transitions. [2022-11-16 11:03:06,128 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 282 places, 380 transitions, 2289 flow [2022-11-16 11:03:06,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:03:06,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:03:06,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2429 transitions. [2022-11-16 11:03:06,135 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8903958944281525 [2022-11-16 11:03:06,135 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2429 transitions. [2022-11-16 11:03:06,136 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2429 transitions. [2022-11-16 11:03:06,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:06,138 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2429 transitions. [2022-11-16 11:03:06,153 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 220.8181818181818) internal successors, (2429), 11 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:06,159 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:06,161 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:06,161 INFO L175 Difference]: Start difference. First operand has 272 places, 283 transitions, 1177 flow. Second operand 11 states and 2429 transitions. [2022-11-16 11:03:06,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 282 places, 380 transitions, 2289 flow [2022-11-16 11:03:06,226 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 280 places, 380 transitions, 2277 flow, removed 2 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:06,238 INFO L231 Difference]: Finished difference. Result has 287 places, 304 transitions, 1469 flow [2022-11-16 11:03:06,238 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1165, PETRI_DIFFERENCE_MINUEND_PLACES=270, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=283, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=261, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1469, PETRI_PLACES=287, PETRI_TRANSITIONS=304} [2022-11-16 11:03:06,241 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 62 predicate places. [2022-11-16 11:03:06,242 INFO L495 AbstractCegarLoop]: Abstraction has has 287 places, 304 transitions, 1469 flow [2022-11-16 11:03:06,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:06,243 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:06,243 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:06,243 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-16 11:03:06,243 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:06,244 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:06,244 INFO L85 PathProgramCache]: Analyzing trace with hash -1765780910, now seen corresponding path program 2 times [2022-11-16 11:03:06,244 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:06,244 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1572819942] [2022-11-16 11:03:06,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:06,245 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:06,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:06,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:06,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1572819942] [2022-11-16 11:03:06,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1572819942] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:06,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:06,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:03:06,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1376087215] [2022-11-16 11:03:06,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:06,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:03:06,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:06,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:03:06,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:03:06,485 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 248 [2022-11-16 11:03:06,487 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 287 places, 304 transitions, 1469 flow. Second operand has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:06,487 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:06,487 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 248 [2022-11-16 11:03:06,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:09,311 INFO L130 PetriNetUnfolder]: 1975/13412 cut-off events. [2022-11-16 11:03:09,311 INFO L131 PetriNetUnfolder]: For 21700/23030 co-relation queries the response was YES. [2022-11-16 11:03:09,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25752 conditions, 13412 events. 1975/13412 cut-off events. For 21700/23030 co-relation queries the response was YES. Maximal size of possible extension queue 655. Compared 186915 event pairs, 332 based on Foata normal form. 513/12872 useless extension candidates. Maximal degree in co-relation 25684. Up to 1467 conditions per place. [2022-11-16 11:03:09,490 INFO L137 encePairwiseOnDemand]: 233/248 looper letters, 90 selfloop transitions, 57 changer transitions 20/395 dead transitions. [2022-11-16 11:03:09,490 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 292 places, 395 transitions, 2663 flow [2022-11-16 11:03:09,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:03:09,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:03:09,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2004 transitions. [2022-11-16 11:03:09,497 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8978494623655914 [2022-11-16 11:03:09,497 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2004 transitions. [2022-11-16 11:03:09,497 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2004 transitions. [2022-11-16 11:03:09,499 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:09,499 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2004 transitions. [2022-11-16 11:03:09,505 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.66666666666666) internal successors, (2004), 9 states have internal predecessors, (2004), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:09,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:09,512 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:09,512 INFO L175 Difference]: Start difference. First operand has 287 places, 304 transitions, 1469 flow. Second operand 9 states and 2004 transitions. [2022-11-16 11:03:09,513 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 292 places, 395 transitions, 2663 flow [2022-11-16 11:03:09,607 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 289 places, 395 transitions, 2636 flow, removed 13 selfloop flow, removed 3 redundant places. [2022-11-16 11:03:09,614 INFO L231 Difference]: Finished difference. Result has 297 places, 330 transitions, 1975 flow [2022-11-16 11:03:09,615 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1454, PETRI_DIFFERENCE_MINUEND_PLACES=281, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=304, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=27, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1975, PETRI_PLACES=297, PETRI_TRANSITIONS=330} [2022-11-16 11:03:09,617 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 72 predicate places. [2022-11-16 11:03:09,617 INFO L495 AbstractCegarLoop]: Abstraction has has 297 places, 330 transitions, 1975 flow [2022-11-16 11:03:09,618 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:09,618 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:09,618 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:09,618 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-16 11:03:09,619 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:09,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:09,619 INFO L85 PathProgramCache]: Analyzing trace with hash -1631970568, now seen corresponding path program 3 times [2022-11-16 11:03:09,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:09,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049002427] [2022-11-16 11:03:09,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:09,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:09,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:10,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:10,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:10,045 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049002427] [2022-11-16 11:03:10,045 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049002427] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:10,045 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:10,045 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:03:10,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2001456973] [2022-11-16 11:03:10,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:10,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:03:10,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:10,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:03:10,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:03:10,052 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 248 [2022-11-16 11:03:10,053 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 297 places, 330 transitions, 1975 flow. Second operand has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:10,054 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:10,054 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 248 [2022-11-16 11:03:10,054 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:12,906 INFO L130 PetriNetUnfolder]: 2322/15536 cut-off events. [2022-11-16 11:03:12,906 INFO L131 PetriNetUnfolder]: For 31760/33382 co-relation queries the response was YES. [2022-11-16 11:03:13,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31777 conditions, 15536 events. 2322/15536 cut-off events. For 31760/33382 co-relation queries the response was YES. Maximal size of possible extension queue 814. Compared 222662 event pairs, 410 based on Foata normal form. 622/15046 useless extension candidates. Maximal degree in co-relation 31704. Up to 2323 conditions per place. [2022-11-16 11:03:13,109 INFO L137 encePairwiseOnDemand]: 233/248 looper letters, 97 selfloop transitions, 91 changer transitions 12/427 dead transitions. [2022-11-16 11:03:13,109 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 427 transitions, 3487 flow [2022-11-16 11:03:13,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-16 11:03:13,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2022-11-16 11:03:13,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 2002 transitions. [2022-11-16 11:03:13,115 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8969534050179212 [2022-11-16 11:03:13,115 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 2002 transitions. [2022-11-16 11:03:13,115 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 2002 transitions. [2022-11-16 11:03:13,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:13,117 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 2002 transitions. [2022-11-16 11:03:13,121 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 222.44444444444446) internal successors, (2002), 9 states have internal predecessors, (2002), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:13,126 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:13,128 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 248.0) internal successors, (2480), 10 states have internal predecessors, (2480), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:13,128 INFO L175 Difference]: Start difference. First operand has 297 places, 330 transitions, 1975 flow. Second operand 9 states and 2002 transitions. [2022-11-16 11:03:13,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 427 transitions, 3487 flow [2022-11-16 11:03:13,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 301 places, 427 transitions, 3465 flow, removed 11 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:13,304 INFO L231 Difference]: Finished difference. Result has 308 places, 373 transitions, 2882 flow [2022-11-16 11:03:13,305 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1959, PETRI_DIFFERENCE_MINUEND_PLACES=293, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=330, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2882, PETRI_PLACES=308, PETRI_TRANSITIONS=373} [2022-11-16 11:03:13,306 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 83 predicate places. [2022-11-16 11:03:13,306 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 373 transitions, 2882 flow [2022-11-16 11:03:13,307 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 216.0) internal successors, (1512), 7 states have internal predecessors, (1512), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:13,307 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:13,307 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:13,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-16 11:03:13,308 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:13,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:13,309 INFO L85 PathProgramCache]: Analyzing trace with hash 719472450, now seen corresponding path program 4 times [2022-11-16 11:03:13,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:13,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547913935] [2022-11-16 11:03:13,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:13,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:13,559 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:13,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:13,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547913935] [2022-11-16 11:03:13,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547913935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:13,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:13,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:03:13,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676073487] [2022-11-16 11:03:13,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:13,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:03:13,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:13,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:03:13,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:03:13,564 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 213 out of 248 [2022-11-16 11:03:13,566 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 373 transitions, 2882 flow. Second operand has 8 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:13,566 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:13,566 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 213 of 248 [2022-11-16 11:03:13,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:17,014 INFO L130 PetriNetUnfolder]: 2257/15442 cut-off events. [2022-11-16 11:03:17,015 INFO L131 PetriNetUnfolder]: For 40178/41900 co-relation queries the response was YES. [2022-11-16 11:03:17,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34209 conditions, 15442 events. 2257/15442 cut-off events. For 40178/41900 co-relation queries the response was YES. Maximal size of possible extension queue 805. Compared 221171 event pairs, 390 based on Foata normal form. 591/14917 useless extension candidates. Maximal degree in co-relation 34131. Up to 1616 conditions per place. [2022-11-16 11:03:17,213 INFO L137 encePairwiseOnDemand]: 235/248 looper letters, 100 selfloop transitions, 76 changer transitions 22/425 dead transitions. [2022-11-16 11:03:17,213 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 315 places, 425 transitions, 3803 flow [2022-11-16 11:03:17,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-16 11:03:17,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2022-11-16 11:03:17,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 2429 transitions. [2022-11-16 11:03:17,220 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8903958944281525 [2022-11-16 11:03:17,220 INFO L72 ComplementDD]: Start complementDD. Operand 11 states and 2429 transitions. [2022-11-16 11:03:17,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 11 states and 2429 transitions. [2022-11-16 11:03:17,222 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:17,222 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 11 states and 2429 transitions. [2022-11-16 11:03:17,228 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 12 states, 11 states have (on average 220.8181818181818) internal successors, (2429), 11 states have internal predecessors, (2429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:17,234 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 12 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:17,235 INFO L81 ComplementDD]: Finished complementDD. Result has 12 states, 12 states have (on average 248.0) internal successors, (2976), 12 states have internal predecessors, (2976), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:17,235 INFO L175 Difference]: Start difference. First operand has 308 places, 373 transitions, 2882 flow. Second operand 11 states and 2429 transitions. [2022-11-16 11:03:17,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 315 places, 425 transitions, 3803 flow [2022-11-16 11:03:17,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 313 places, 425 transitions, 3765 flow, removed 19 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:17,489 INFO L231 Difference]: Finished difference. Result has 316 places, 369 transitions, 2916 flow [2022-11-16 11:03:17,489 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2854, PETRI_DIFFERENCE_MINUEND_PLACES=303, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=373, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=76, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=297, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2916, PETRI_PLACES=316, PETRI_TRANSITIONS=369} [2022-11-16 11:03:17,490 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 91 predicate places. [2022-11-16 11:03:17,490 INFO L495 AbstractCegarLoop]: Abstraction has has 316 places, 369 transitions, 2916 flow [2022-11-16 11:03:17,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 215.625) internal successors, (1725), 8 states have internal predecessors, (1725), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:17,491 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:17,492 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:17,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-16 11:03:17,492 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:17,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:17,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1406888384, now seen corresponding path program 5 times [2022-11-16 11:03:17,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:17,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945602549] [2022-11-16 11:03:17,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:17,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:17,735 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:17,736 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:17,736 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945602549] [2022-11-16 11:03:17,736 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945602549] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:17,736 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:17,736 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-16 11:03:17,737 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316308460] [2022-11-16 11:03:17,737 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:17,737 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-16 11:03:17,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:17,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-16 11:03:17,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-16 11:03:17,743 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 248 [2022-11-16 11:03:17,745 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 316 places, 369 transitions, 2916 flow. Second operand has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:17,745 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:17,745 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 248 [2022-11-16 11:03:17,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:20,436 INFO L130 PetriNetUnfolder]: 1616/12597 cut-off events. [2022-11-16 11:03:20,436 INFO L131 PetriNetUnfolder]: For 29191/30550 co-relation queries the response was YES. [2022-11-16 11:03:20,580 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26987 conditions, 12597 events. 1616/12597 cut-off events. For 29191/30550 co-relation queries the response was YES. Maximal size of possible extension queue 602. Compared 176801 event pairs, 314 based on Foata normal form. 364/12062 useless extension candidates. Maximal degree in co-relation 26917. Up to 1483 conditions per place. [2022-11-16 11:03:20,603 INFO L137 encePairwiseOnDemand]: 236/248 looper letters, 58 selfloop transitions, 28 changer transitions 23/387 dead transitions. [2022-11-16 11:03:20,603 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 321 places, 387 transitions, 3191 flow [2022-11-16 11:03:20,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-16 11:03:20,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2022-11-16 11:03:20,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 1786 transitions. [2022-11-16 11:03:20,608 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9002016129032258 [2022-11-16 11:03:20,608 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 1786 transitions. [2022-11-16 11:03:20,608 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 1786 transitions. [2022-11-16 11:03:20,610 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:20,610 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 1786 transitions. [2022-11-16 11:03:20,614 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 223.25) internal successors, (1786), 8 states have internal predecessors, (1786), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:20,618 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 248.0) internal successors, (2232), 9 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:20,619 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 248.0) internal successors, (2232), 9 states have internal predecessors, (2232), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:20,619 INFO L175 Difference]: Start difference. First operand has 316 places, 369 transitions, 2916 flow. Second operand 8 states and 1786 transitions. [2022-11-16 11:03:20,619 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 321 places, 387 transitions, 3191 flow [2022-11-16 11:03:20,806 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 387 transitions, 3042 flow, removed 4 selfloop flow, removed 6 redundant places. [2022-11-16 11:03:20,811 INFO L231 Difference]: Finished difference. Result has 318 places, 355 transitions, 2582 flow [2022-11-16 11:03:20,812 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2769, PETRI_DIFFERENCE_MINUEND_PLACES=308, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=369, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=341, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=2582, PETRI_PLACES=318, PETRI_TRANSITIONS=355} [2022-11-16 11:03:20,813 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 93 predicate places. [2022-11-16 11:03:20,813 INFO L495 AbstractCegarLoop]: Abstraction has has 318 places, 355 transitions, 2582 flow [2022-11-16 11:03:20,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 219.42857142857142) internal successors, (1536), 7 states have internal predecessors, (1536), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:20,814 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:20,814 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:20,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-16 11:03:20,815 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:20,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:20,815 INFO L85 PathProgramCache]: Analyzing trace with hash 985212066, now seen corresponding path program 1 times [2022-11-16 11:03:20,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:20,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12792590] [2022-11-16 11:03:20,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:20,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:20,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:21,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:21,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:21,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12792590] [2022-11-16 11:03:21,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [12792590] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:21,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:21,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-16 11:03:21,004 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074147867] [2022-11-16 11:03:21,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:21,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-16 11:03:21,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:21,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-16 11:03:21,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-16 11:03:21,007 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 217 out of 248 [2022-11-16 11:03:21,009 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 318 places, 355 transitions, 2582 flow. Second operand has 8 states, 8 states have (on average 219.5) internal successors, (1756), 8 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:21,009 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:21,009 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 217 of 248 [2022-11-16 11:03:21,010 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:23,911 INFO L130 PetriNetUnfolder]: 1996/13632 cut-off events. [2022-11-16 11:03:23,911 INFO L131 PetriNetUnfolder]: For 34959/36674 co-relation queries the response was YES. [2022-11-16 11:03:24,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 31499 conditions, 13632 events. 1996/13632 cut-off events. For 34959/36674 co-relation queries the response was YES. Maximal size of possible extension queue 749. Compared 196155 event pairs, 360 based on Foata normal form. 427/13151 useless extension candidates. Maximal degree in co-relation 31429. Up to 1794 conditions per place. [2022-11-16 11:03:24,081 INFO L137 encePairwiseOnDemand]: 237/248 looper letters, 52 selfloop transitions, 53 changer transitions 102/460 dead transitions. [2022-11-16 11:03:24,081 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 326 places, 460 transitions, 4172 flow [2022-11-16 11:03:24,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-16 11:03:24,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2022-11-16 11:03:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 2674 transitions. [2022-11-16 11:03:24,086 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8985215053763441 [2022-11-16 11:03:24,087 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 2674 transitions. [2022-11-16 11:03:24,087 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 2674 transitions. [2022-11-16 11:03:24,088 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:24,089 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 2674 transitions. [2022-11-16 11:03:24,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 222.83333333333334) internal successors, (2674), 12 states have internal predecessors, (2674), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:24,100 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 248.0) internal successors, (3224), 13 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:24,102 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 248.0) internal successors, (3224), 13 states have internal predecessors, (3224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:24,102 INFO L175 Difference]: Start difference. First operand has 318 places, 355 transitions, 2582 flow. Second operand 12 states and 2674 transitions. [2022-11-16 11:03:24,102 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 326 places, 460 transitions, 4172 flow [2022-11-16 11:03:24,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 318 places, 460 transitions, 4053 flow, removed 21 selfloop flow, removed 8 redundant places. [2022-11-16 11:03:24,290 INFO L231 Difference]: Finished difference. Result has 326 places, 347 transitions, 2378 flow [2022-11-16 11:03:24,291 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2486, PETRI_DIFFERENCE_MINUEND_PLACES=307, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=355, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=309, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2378, PETRI_PLACES=326, PETRI_TRANSITIONS=347} [2022-11-16 11:03:24,292 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 101 predicate places. [2022-11-16 11:03:24,292 INFO L495 AbstractCegarLoop]: Abstraction has has 326 places, 347 transitions, 2378 flow [2022-11-16 11:03:24,293 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 219.5) internal successors, (1756), 8 states have internal predecessors, (1756), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:24,293 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:24,293 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:24,293 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-16 11:03:24,294 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:24,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:24,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1709443040, now seen corresponding path program 1 times [2022-11-16 11:03:24,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:24,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [941694194] [2022-11-16 11:03:24,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:24,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:24,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:24,348 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:24,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:24,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [941694194] [2022-11-16 11:03:24,349 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [941694194] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:24,349 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:24,349 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:03:24,349 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575349470] [2022-11-16 11:03:24,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:24,350 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:24,350 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:24,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:24,351 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:24,352 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 227 out of 248 [2022-11-16 11:03:24,353 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 326 places, 347 transitions, 2378 flow. Second operand has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:24,353 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:24,353 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 227 of 248 [2022-11-16 11:03:24,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:26,132 INFO L130 PetriNetUnfolder]: 587/6376 cut-off events. [2022-11-16 11:03:26,132 INFO L131 PetriNetUnfolder]: For 13830/14361 co-relation queries the response was YES. [2022-11-16 11:03:26,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12932 conditions, 6376 events. 587/6376 cut-off events. For 13830/14361 co-relation queries the response was YES. Maximal size of possible extension queue 334. Compared 82875 event pairs, 35 based on Foata normal form. 182/6175 useless extension candidates. Maximal degree in co-relation 12885. Up to 396 conditions per place. [2022-11-16 11:03:26,220 INFO L137 encePairwiseOnDemand]: 242/248 looper letters, 19 selfloop transitions, 4 changer transitions 0/336 dead transitions. [2022-11-16 11:03:26,220 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 318 places, 336 transitions, 2209 flow [2022-11-16 11:03:26,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:26,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:26,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 700 transitions. [2022-11-16 11:03:26,223 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9408602150537635 [2022-11-16 11:03:26,224 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 700 transitions. [2022-11-16 11:03:26,224 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 700 transitions. [2022-11-16 11:03:26,225 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:26,225 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 700 transitions. [2022-11-16 11:03:26,227 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 233.33333333333334) internal successors, (700), 3 states have internal predecessors, (700), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:26,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:26,230 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:26,231 INFO L175 Difference]: Start difference. First operand has 326 places, 347 transitions, 2378 flow. Second operand 3 states and 700 transitions. [2022-11-16 11:03:26,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 318 places, 336 transitions, 2209 flow [2022-11-16 11:03:26,336 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 307 places, 336 transitions, 2159 flow, removed 8 selfloop flow, removed 11 redundant places. [2022-11-16 11:03:26,343 INFO L231 Difference]: Finished difference. Result has 308 places, 334 transitions, 2119 flow [2022-11-16 11:03:26,344 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2103, PETRI_DIFFERENCE_MINUEND_PLACES=305, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=334, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=330, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=2119, PETRI_PLACES=308, PETRI_TRANSITIONS=334} [2022-11-16 11:03:26,344 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 83 predicate places. [2022-11-16 11:03:26,345 INFO L495 AbstractCegarLoop]: Abstraction has has 308 places, 334 transitions, 2119 flow [2022-11-16 11:03:26,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 230.33333333333334) internal successors, (691), 3 states have internal predecessors, (691), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:26,345 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:26,346 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:26,346 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-16 11:03:26,346 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:26,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:26,347 INFO L85 PathProgramCache]: Analyzing trace with hash -753145038, now seen corresponding path program 1 times [2022-11-16 11:03:26,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:26,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474738354] [2022-11-16 11:03:26,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:26,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:26,418 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:26,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:26,420 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474738354] [2022-11-16 11:03:26,420 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474738354] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:26,420 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:26,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-16 11:03:26,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520497940] [2022-11-16 11:03:26,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:26,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-16 11:03:26,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:26,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-16 11:03:26,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-16 11:03:26,424 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 226 out of 248 [2022-11-16 11:03:26,425 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 308 places, 334 transitions, 2119 flow. Second operand has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:26,425 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:26,426 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 226 of 248 [2022-11-16 11:03:26,426 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:27,208 INFO L130 PetriNetUnfolder]: 459/4597 cut-off events. [2022-11-16 11:03:27,208 INFO L131 PetriNetUnfolder]: For 11709/12098 co-relation queries the response was YES. [2022-11-16 11:03:27,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9923 conditions, 4597 events. 459/4597 cut-off events. For 11709/12098 co-relation queries the response was YES. Maximal size of possible extension queue 236. Compared 53986 event pairs, 53 based on Foata normal form. 178/4499 useless extension candidates. Maximal degree in co-relation 9885. Up to 290 conditions per place. [2022-11-16 11:03:27,262 INFO L137 encePairwiseOnDemand]: 244/248 looper letters, 36 selfloop transitions, 5 changer transitions 3/329 dead transitions. [2022-11-16 11:03:27,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 310 places, 329 transitions, 1993 flow [2022-11-16 11:03:27,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-16 11:03:27,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2022-11-16 11:03:27,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 702 transitions. [2022-11-16 11:03:27,264 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.9435483870967742 [2022-11-16 11:03:27,264 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 702 transitions. [2022-11-16 11:03:27,264 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 702 transitions. [2022-11-16 11:03:27,265 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:27,265 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 702 transitions. [2022-11-16 11:03:27,267 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 234.0) internal successors, (702), 3 states have internal predecessors, (702), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:27,269 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:27,269 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 248.0) internal successors, (992), 4 states have internal predecessors, (992), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:27,269 INFO L175 Difference]: Start difference. First operand has 308 places, 334 transitions, 2119 flow. Second operand 3 states and 702 transitions. [2022-11-16 11:03:27,270 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 310 places, 329 transitions, 1993 flow [2022-11-16 11:03:27,340 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 308 places, 329 transitions, 1979 flow, removed 3 selfloop flow, removed 2 redundant places. [2022-11-16 11:03:27,345 INFO L231 Difference]: Finished difference. Result has 310 places, 322 transitions, 1873 flow [2022-11-16 11:03:27,346 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1804, PETRI_DIFFERENCE_MINUEND_PLACES=306, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=318, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=313, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=1873, PETRI_PLACES=310, PETRI_TRANSITIONS=322} [2022-11-16 11:03:27,347 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 85 predicate places. [2022-11-16 11:03:27,347 INFO L495 AbstractCegarLoop]: Abstraction has has 310 places, 322 transitions, 1873 flow [2022-11-16 11:03:27,348 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 229.33333333333334) internal successors, (688), 3 states have internal predecessors, (688), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:27,348 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:27,348 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:27,348 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-16 11:03:27,348 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:27,349 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:27,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1592893584, now seen corresponding path program 1 times [2022-11-16 11:03:27,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:27,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [345826786] [2022-11-16 11:03:27,350 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:27,350 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:27,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:27,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:27,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [345826786] [2022-11-16 11:03:27,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [345826786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:27,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:27,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:03:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472488380] [2022-11-16 11:03:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:27,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:03:27,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:27,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:03:27,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:03:27,949 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 248 [2022-11-16 11:03:27,952 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 310 places, 322 transitions, 1873 flow. Second operand has 12 states, 12 states have (on average 203.33333333333334) internal successors, (2440), 12 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:27,952 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:27,952 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 248 [2022-11-16 11:03:27,952 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:33,736 INFO L130 PetriNetUnfolder]: 5146/16466 cut-off events. [2022-11-16 11:03:33,736 INFO L131 PetriNetUnfolder]: For 34679/35253 co-relation queries the response was YES. [2022-11-16 11:03:33,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40706 conditions, 16466 events. 5146/16466 cut-off events. For 34679/35253 co-relation queries the response was YES. Maximal size of possible extension queue 1028. Compared 205221 event pairs, 2561 based on Foata normal form. 191/15530 useless extension candidates. Maximal degree in co-relation 40667. Up to 6567 conditions per place. [2022-11-16 11:03:33,978 INFO L137 encePairwiseOnDemand]: 229/248 looper letters, 214 selfloop transitions, 62 changer transitions 65/565 dead transitions. [2022-11-16 11:03:33,978 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 565 transitions, 4056 flow [2022-11-16 11:03:33,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-11-16 11:03:33,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2022-11-16 11:03:33,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 8065 transitions. [2022-11-16 11:03:33,995 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8338502894954508 [2022-11-16 11:03:33,995 INFO L72 ComplementDD]: Start complementDD. Operand 39 states and 8065 transitions. [2022-11-16 11:03:33,995 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 8065 transitions. [2022-11-16 11:03:34,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:34,001 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 39 states and 8065 transitions. [2022-11-16 11:03:34,024 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 40 states, 39 states have (on average 206.7948717948718) internal successors, (8065), 39 states have internal predecessors, (8065), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:34,041 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 40 states, 40 states have (on average 248.0) internal successors, (9920), 40 states have internal predecessors, (9920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:34,046 INFO L81 ComplementDD]: Finished complementDD. Result has 40 states, 40 states have (on average 248.0) internal successors, (9920), 40 states have internal predecessors, (9920), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:34,046 INFO L175 Difference]: Start difference. First operand has 310 places, 322 transitions, 1873 flow. Second operand 39 states and 8065 transitions. [2022-11-16 11:03:34,046 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 565 transitions, 4056 flow [2022-11-16 11:03:34,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 347 places, 565 transitions, 4051 flow, removed 0 selfloop flow, removed 1 redundant places. [2022-11-16 11:03:34,292 INFO L231 Difference]: Finished difference. Result has 381 places, 380 transitions, 2463 flow [2022-11-16 11:03:34,292 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=1868, PETRI_DIFFERENCE_MINUEND_PLACES=309, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=322, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=302, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=2463, PETRI_PLACES=381, PETRI_TRANSITIONS=380} [2022-11-16 11:03:34,293 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 156 predicate places. [2022-11-16 11:03:34,294 INFO L495 AbstractCegarLoop]: Abstraction has has 381 places, 380 transitions, 2463 flow [2022-11-16 11:03:34,294 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 203.33333333333334) internal successors, (2440), 12 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:34,295 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:34,295 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:34,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-11-16 11:03:34,295 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:34,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:34,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1908615802, now seen corresponding path program 2 times [2022-11-16 11:03:34,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:34,297 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [832585401] [2022-11-16 11:03:34,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:34,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:34,672 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:34,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:34,673 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [832585401] [2022-11-16 11:03:34,673 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [832585401] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:34,673 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:34,673 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-16 11:03:34,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945156197] [2022-11-16 11:03:34,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:34,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-16 11:03:34,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:34,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-16 11:03:34,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-16 11:03:34,678 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 212 out of 248 [2022-11-16 11:03:34,681 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 381 places, 380 transitions, 2463 flow. Second operand has 9 states, 9 states have (on average 214.33333333333334) internal successors, (1929), 9 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:34,682 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:34,682 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 212 of 248 [2022-11-16 11:03:34,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:38,440 INFO L130 PetriNetUnfolder]: 1820/13427 cut-off events. [2022-11-16 11:03:38,441 INFO L131 PetriNetUnfolder]: For 48293/50856 co-relation queries the response was YES. [2022-11-16 11:03:38,730 INFO L83 FinitePrefix]: Finished finitePrefix Result has 36483 conditions, 13427 events. 1820/13427 cut-off events. For 48293/50856 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 192967 event pairs, 154 based on Foata normal form. 615/13244 useless extension candidates. Maximal degree in co-relation 36410. Up to 1015 conditions per place. [2022-11-16 11:03:38,772 INFO L137 encePairwiseOnDemand]: 230/248 looper letters, 106 selfloop transitions, 67 changer transitions 18/532 dead transitions. [2022-11-16 11:03:38,773 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 399 places, 532 transitions, 3863 flow [2022-11-16 11:03:38,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:03:38,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:03:38,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4590 transitions. [2022-11-16 11:03:38,781 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.881336405529954 [2022-11-16 11:03:38,781 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4590 transitions. [2022-11-16 11:03:38,781 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4590 transitions. [2022-11-16 11:03:38,783 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:38,783 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4590 transitions. [2022-11-16 11:03:38,794 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 218.57142857142858) internal successors, (4590), 21 states have internal predecessors, (4590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:38,803 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 248.0) internal successors, (5456), 22 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:38,805 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 248.0) internal successors, (5456), 22 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:38,805 INFO L175 Difference]: Start difference. First operand has 381 places, 380 transitions, 2463 flow. Second operand 21 states and 4590 transitions. [2022-11-16 11:03:38,806 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 399 places, 532 transitions, 3863 flow [2022-11-16 11:03:39,395 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 396 places, 532 transitions, 3728 flow, removed 47 selfloop flow, removed 3 redundant places. [2022-11-16 11:03:39,404 INFO L231 Difference]: Finished difference. Result has 409 places, 435 transitions, 3106 flow [2022-11-16 11:03:39,405 INFO L271 CegarLoopForPetriNet]: {PETRI_ALPHABET=248, PETRI_DIFFERENCE_MINUEND_FLOW=2358, PETRI_DIFFERENCE_MINUEND_PLACES=376, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=380, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=355, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=3106, PETRI_PLACES=409, PETRI_TRANSITIONS=435} [2022-11-16 11:03:39,405 INFO L288 CegarLoopForPetriNet]: 225 programPoint places, 184 predicate places. [2022-11-16 11:03:39,405 INFO L495 AbstractCegarLoop]: Abstraction has has 409 places, 435 transitions, 3106 flow [2022-11-16 11:03:39,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 214.33333333333334) internal successors, (1929), 9 states have internal predecessors, (1929), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:39,407 INFO L201 CegarLoopForPetriNet]: Found error trace [2022-11-16 11:03:39,407 INFO L209 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-16 11:03:39,407 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-11-16 11:03:39,407 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2022-11-16 11:03:39,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 11:03:39,408 INFO L85 PathProgramCache]: Analyzing trace with hash -1515790104, now seen corresponding path program 3 times [2022-11-16 11:03:39,409 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 11:03:39,409 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573697285] [2022-11-16 11:03:39,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 11:03:39,409 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 11:03:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-16 11:03:40,020 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-16 11:03:40,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-11-16 11:03:40,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573697285] [2022-11-16 11:03:40,021 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573697285] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-16 11:03:40,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-16 11:03:40,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-16 11:03:40,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [86739285] [2022-11-16 11:03:40,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-16 11:03:40,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-16 11:03:40,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-11-16 11:03:40,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-16 11:03:40,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-16 11:03:40,027 INFO L478 CegarLoopForPetriNet]: Number of universal loopers: 201 out of 248 [2022-11-16 11:03:40,030 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 409 places, 435 transitions, 3106 flow. Second operand has 12 states, 12 states have (on average 203.33333333333334) internal successors, (2440), 12 states have internal predecessors, (2440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:40,030 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2022-11-16 11:03:40,030 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 201 of 248 [2022-11-16 11:03:40,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2022-11-16 11:03:53,835 INFO L130 PetriNetUnfolder]: 18823/51441 cut-off events. [2022-11-16 11:03:53,835 INFO L131 PetriNetUnfolder]: For 245850/253323 co-relation queries the response was YES. [2022-11-16 11:03:55,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178582 conditions, 51441 events. 18823/51441 cut-off events. For 245850/253323 co-relation queries the response was YES. Maximal size of possible extension queue 3851. Compared 712196 event pairs, 8642 based on Foata normal form. 607/47419 useless extension candidates. Maximal degree in co-relation 178498. Up to 21070 conditions per place. [2022-11-16 11:03:55,262 INFO L137 encePairwiseOnDemand]: 231/248 looper letters, 218 selfloop transitions, 59 changer transitions 24/574 dead transitions. [2022-11-16 11:03:55,262 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 427 places, 574 transitions, 4886 flow [2022-11-16 11:03:55,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-11-16 11:03:55,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2022-11-16 11:03:55,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 4366 transitions. [2022-11-16 11:03:55,271 INFO L523 CegarLoopForPetriNet]: DFA transition density 0.8383256528417818 [2022-11-16 11:03:55,272 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 4366 transitions. [2022-11-16 11:03:55,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 4366 transitions. [2022-11-16 11:03:55,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2022-11-16 11:03:55,275 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 4366 transitions. [2022-11-16 11:03:55,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 207.9047619047619) internal successors, (4366), 21 states have internal predecessors, (4366), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:55,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 248.0) internal successors, (5456), 22 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:55,295 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 248.0) internal successors, (5456), 22 states have internal predecessors, (5456), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-11-16 11:03:55,295 INFO L175 Difference]: Start difference. First operand has 409 places, 435 transitions, 3106 flow. Second operand 21 states and 4366 transitions. [2022-11-16 11:03:55,295 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 427 places, 574 transitions, 4886 flow