./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB --witnessprinter.witness.filename witness --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 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 04:45:39,480 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 04:45:39,572 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 04:45:39,583 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 04:45:39,584 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 04:45:39,621 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 04:45:39,622 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 04:45:39,622 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 04:45:39,623 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 04:45:39,623 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 04:45:39,624 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 04:45:39,624 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 04:45:39,625 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 04:45:39,625 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 04:45:39,626 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 04:45:39,626 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 04:45:39,626 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 04:45:39,626 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 04:45:39,627 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 04:45:39,627 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 04:45:39,627 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 04:45:39,627 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 04:45:39,627 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 04:45:39,627 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 04:45:39,627 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 04:45:39,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 04:45:39,628 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 04:45:39,628 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 04:45:39,628 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 04:45:39,628 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:39,628 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:39,628 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:39,629 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:39,629 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 04:45:39,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 04:45:39,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 04:45:39,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 04:45:39,630 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:39,630 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 04:45:39,630 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 04:45:39,630 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 04:45:39,630 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 04:45:39,631 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 04:45:39,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 04:45:39,631 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 04:45:39,631 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 04:45:39,631 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 04:45:39,632 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 04:45:39,632 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness 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 -> 7888761977ccc49b1a75199021e374591654c6a4364e63bfc6c86e1c7bb7d64b [2024-11-28 04:45:39,956 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 04:45:39,965 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 04:45:39,968 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 04:45:39,969 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 04:45:39,969 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 04:45:39,971 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-28 04:45:42,910 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/data/9da8c45c6/38e964ebe069413093abb0d73ccbd66f/FLAGf30b7ee17 [2024-11-28 04:45:43,169 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 04:45:43,170 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c [2024-11-28 04:45:43,181 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/data/9da8c45c6/38e964ebe069413093abb0d73ccbd66f/FLAGf30b7ee17 [2024-11-28 04:45:43,196 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/data/9da8c45c6/38e964ebe069413093abb0d73ccbd66f [2024-11-28 04:45:43,198 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 04:45:43,199 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 04:45:43,201 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:43,201 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 04:45:43,206 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 04:45:43,206 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,207 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c17e51 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43, skipping insertion in model container [2024-11-28 04:45:43,208 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,230 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 04:45:43,513 WARN L250 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_caa84142-9b72-41d7-9181-a8ba0fbcb282/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2024-11-28 04:45:43,526 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:43,539 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 04:45:43,569 WARN L250 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_caa84142-9b72-41d7-9181-a8ba0fbcb282/sv-benchmarks/c/weaver/popl20-more-buffer-mult3.wvr.c[4270,4283] [2024-11-28 04:45:43,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 04:45:43,596 INFO L204 MainTranslator]: Completed translation [2024-11-28 04:45:43,596 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43 WrapperNode [2024-11-28 04:45:43,597 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 04:45:43,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:43,600 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 04:45:43,600 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 04:45:43,609 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,619 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,649 INFO L138 Inliner]: procedures = 26, calls = 60, calls flagged for inlining = 18, calls inlined = 22, statements flattened = 290 [2024-11-28 04:45:43,650 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 04:45:43,650 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 04:45:43,650 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 04:45:43,651 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 04:45:43,661 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,661 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,666 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,683 INFO L175 MemorySlicer]: Split 8 memory accesses to 2 slices as follows [2, 6]. 75 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 2 writes are split as follows [0, 2]. [2024-11-28 04:45:43,683 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,684 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,698 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,703 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,712 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,716 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,721 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,724 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 04:45:43,728 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 04:45:43,728 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 04:45:43,728 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 04:45:43,733 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (1/1) ... [2024-11-28 04:45:43,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 04:45:43,761 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 04:45:43,776 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 04:45:43,781 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_caa84142-9b72-41d7-9181-a8ba0fbcb282/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 04:45:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 04:45:43,815 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 04:45:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 04:45:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 04:45:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 04:45:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 04:45:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 04:45:43,816 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 04:45:43,816 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 04:45:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 04:45:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 04:45:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-28 04:45:43,817 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-28 04:45:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 04:45:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 04:45:43,817 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 04:45:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 04:45:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 04:45:43,818 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 04:45:43,818 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 04:45:43,820 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 04:45:43,973 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 04:45:43,977 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 04:45:44,693 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 04:45:44,694 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 04:45:45,210 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 04:45:45,211 INFO L312 CfgBuilder]: Removed 6 assume(true) statements. [2024-11-28 04:45:45,211 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:45 BoogieIcfgContainer [2024-11-28 04:45:45,211 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 04:45:45,214 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 04:45:45,214 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 04:45:45,220 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 04:45:45,221 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 04:45:43" (1/3) ... [2024-11-28 04:45:45,221 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f6e982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:45, skipping insertion in model container [2024-11-28 04:45:45,222 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 04:45:43" (2/3) ... [2024-11-28 04:45:45,222 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24f6e982 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 04:45:45, skipping insertion in model container [2024-11-28 04:45:45,223 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 04:45:45" (3/3) ... [2024-11-28 04:45:45,224 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-buffer-mult3.wvr.c [2024-11-28 04:45:45,243 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 04:45:45,244 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-buffer-mult3.wvr.c that has 5 procedures, 45 locations, 1 initial locations, 6 loop locations, and 1 error locations. [2024-11-28 04:45:45,245 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 04:45:45,354 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-28 04:45:45,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 50 transitions, 128 flow [2024-11-28 04:45:45,523 INFO L124 PetriNetUnfolderBase]: 6/46 cut-off events. [2024-11-28 04:45:45,526 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:45:45,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63 conditions, 46 events. 6/46 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 85 event pairs, 0 based on Foata normal form. 0/39 useless extension candidates. Maximal degree in co-relation 39. Up to 2 conditions per place. [2024-11-28 04:45:45,532 INFO L82 GeneralOperation]: Start removeDead. Operand has 57 places, 50 transitions, 128 flow [2024-11-28 04:45:45,537 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 52 places, 45 transitions, 114 flow [2024-11-28 04:45:45,545 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 04:45:45,558 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@7f2ee729, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 04:45:45,559 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-28 04:45:45,580 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 04:45:45,580 INFO L124 PetriNetUnfolderBase]: 6/44 cut-off events. [2024-11-28 04:45:45,580 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-28 04:45:45,580 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:45,581 INFO L206 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] [2024-11-28 04:45:45,581 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:45:45,587 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:45,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1196465975, now seen corresponding path program 1 times [2024-11-28 04:45:45,597 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:45,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370017054] [2024-11-28 04:45:45,598 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:45,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:45,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:46,128 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:46,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:46,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370017054] [2024-11-28 04:45:46,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370017054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:46,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:46,134 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:45:46,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979450618] [2024-11-28 04:45:46,136 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:46,152 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:46,157 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:46,190 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:46,192 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:45:46,195 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-28 04:45:46,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 45 transitions, 114 flow. Second operand has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:46,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:46,199 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-28 04:45:46,200 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:47,300 INFO L124 PetriNetUnfolderBase]: 2407/3722 cut-off events. [2024-11-28 04:45:47,304 INFO L125 PetriNetUnfolderBase]: For 211/211 co-relation queries the response was YES. [2024-11-28 04:45:47,322 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6991 conditions, 3722 events. 2407/3722 cut-off events. For 211/211 co-relation queries the response was YES. Maximal size of possible extension queue 244. Compared 21429 event pairs, 472 based on Foata normal form. 1/3532 useless extension candidates. Maximal degree in co-relation 6303. Up to 2067 conditions per place. [2024-11-28 04:45:47,349 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 41 selfloop transitions, 3 changer transitions 1/62 dead transitions. [2024-11-28 04:45:47,350 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 62 transitions, 253 flow [2024-11-28 04:45:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:45:47,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 109 transitions. [2024-11-28 04:45:47,371 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7266666666666667 [2024-11-28 04:45:47,372 INFO L175 Difference]: Start difference. First operand has 52 places, 45 transitions, 114 flow. Second operand 3 states and 109 transitions. [2024-11-28 04:45:47,373 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 62 transitions, 253 flow [2024-11-28 04:45:47,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 62 transitions, 227 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-28 04:45:47,392 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 117 flow [2024-11-28 04:45:47,395 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-11-28 04:45:47,400 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -5 predicate places. [2024-11-28 04:45:47,400 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 117 flow [2024-11-28 04:45:47,400 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 27.666666666666668) internal successors, (83), 3 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:47,400 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:47,400 INFO L206 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] [2024-11-28 04:45:47,401 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 04:45:47,401 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:45:47,402 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:47,402 INFO L85 PathProgramCache]: Analyzing trace with hash -2001293534, now seen corresponding path program 1 times [2024-11-28 04:45:47,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:47,402 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1870359754] [2024-11-28 04:45:47,402 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:47,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:47,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:47,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:47,721 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1870359754] [2024-11-28 04:45:47,721 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1870359754] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:47,721 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:47,722 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:45:47,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916275622] [2024-11-28 04:45:47,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:47,723 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:47,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:47,724 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:47,724 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:45:47,744 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-28 04:45:47,744 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:47,744 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:47,744 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-28 04:45:47,744 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:48,449 INFO L124 PetriNetUnfolderBase]: 2668/4085 cut-off events. [2024-11-28 04:45:48,450 INFO L125 PetriNetUnfolderBase]: For 683/683 co-relation queries the response was YES. [2024-11-28 04:45:48,461 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8437 conditions, 4085 events. 2668/4085 cut-off events. For 683/683 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 24314 event pairs, 761 based on Foata normal form. 116/3972 useless extension candidates. Maximal degree in co-relation 3131. Up to 2321 conditions per place. [2024-11-28 04:45:48,486 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 50 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-11-28 04:45:48,486 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 69 transitions, 279 flow [2024-11-28 04:45:48,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:48,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:45:48,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 113 transitions. [2024-11-28 04:45:48,489 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.7533333333333333 [2024-11-28 04:45:48,489 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 117 flow. Second operand 3 states and 113 transitions. [2024-11-28 04:45:48,489 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 69 transitions, 279 flow [2024-11-28 04:45:48,490 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 69 transitions, 275 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:45:48,493 INFO L231 Difference]: Finished difference. Result has 49 places, 48 transitions, 128 flow [2024-11-28 04:45:48,494 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=49, PETRI_TRANSITIONS=48} [2024-11-28 04:45:48,494 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -3 predicate places. [2024-11-28 04:45:48,494 INFO L471 AbstractCegarLoop]: Abstraction has has 49 places, 48 transitions, 128 flow [2024-11-28 04:45:48,495 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:48,495 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:48,495 INFO L206 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] [2024-11-28 04:45:48,495 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 04:45:48,495 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:45:48,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:48,497 INFO L85 PathProgramCache]: Analyzing trace with hash 953389728, now seen corresponding path program 1 times [2024-11-28 04:45:48,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:48,500 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283282659] [2024-11-28 04:45:48,500 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:48,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:48,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:48,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 04:45:48,781 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:48,781 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283282659] [2024-11-28 04:45:48,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283282659] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:48,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:48,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 04:45:48,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2014331487] [2024-11-28 04:45:48,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:48,782 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 04:45:48,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:48,783 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 04:45:48,783 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 04:45:48,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-28 04:45:48,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 49 places, 48 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:48,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:48,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-28 04:45:48,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:49,444 INFO L124 PetriNetUnfolderBase]: 2976/4754 cut-off events. [2024-11-28 04:45:49,445 INFO L125 PetriNetUnfolderBase]: For 1581/1613 co-relation queries the response was YES. [2024-11-28 04:45:49,453 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10200 conditions, 4754 events. 2976/4754 cut-off events. For 1581/1613 co-relation queries the response was YES. Maximal size of possible extension queue 274. Compared 30381 event pairs, 955 based on Foata normal form. 77/4655 useless extension candidates. Maximal degree in co-relation 4642. Up to 2600 conditions per place. [2024-11-28 04:45:49,474 INFO L140 encePairwiseOnDemand]: 47/50 looper letters, 50 selfloop transitions, 2 changer transitions 0/69 dead transitions. [2024-11-28 04:45:49,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 69 transitions, 295 flow [2024-11-28 04:45:49,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 04:45:49,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 04:45:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 111 transitions. [2024-11-28 04:45:49,476 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.74 [2024-11-28 04:45:49,476 INFO L175 Difference]: Start difference. First operand has 49 places, 48 transitions, 128 flow. Second operand 3 states and 111 transitions. [2024-11-28 04:45:49,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 69 transitions, 295 flow [2024-11-28 04:45:49,477 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 69 transitions, 292 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:45:49,478 INFO L231 Difference]: Finished difference. Result has 51 places, 49 transitions, 140 flow [2024-11-28 04:45:49,478 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=48, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=49} [2024-11-28 04:45:49,481 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, -1 predicate places. [2024-11-28 04:45:49,481 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 49 transitions, 140 flow [2024-11-28 04:45:49,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.0) internal successors, (84), 3 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:49,481 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:49,482 INFO L206 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] [2024-11-28 04:45:49,482 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 04:45:49,482 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:45:49,483 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:49,483 INFO L85 PathProgramCache]: Analyzing trace with hash 1292602913, now seen corresponding path program 1 times [2024-11-28 04:45:49,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:49,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697644658] [2024-11-28 04:45:49,484 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:49,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:49,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:49,777 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:45:49,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:49,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697644658] [2024-11-28 04:45:49,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697644658] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:49,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:49,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-28 04:45:49,778 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688006774] [2024-11-28 04:45:49,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:49,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:49,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:49,779 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:49,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:49,780 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-28 04:45:49,780 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 49 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:49,780 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:49,780 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-28 04:45:49,780 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:50,554 INFO L124 PetriNetUnfolderBase]: 3553/5584 cut-off events. [2024-11-28 04:45:50,554 INFO L125 PetriNetUnfolderBase]: For 2409/2492 co-relation queries the response was YES. [2024-11-28 04:45:50,569 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12767 conditions, 5584 events. 3553/5584 cut-off events. For 2409/2492 co-relation queries the response was YES. Maximal size of possible extension queue 311. Compared 37053 event pairs, 2675 based on Foata normal form. 107/5340 useless extension candidates. Maximal degree in co-relation 6208. Up to 4009 conditions per place. [2024-11-28 04:45:50,597 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 55 selfloop transitions, 3 changer transitions 0/75 dead transitions. [2024-11-28 04:45:50,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 75 transitions, 331 flow [2024-11-28 04:45:50,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:50,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:45:50,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 137 transitions. [2024-11-28 04:45:50,601 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.685 [2024-11-28 04:45:50,601 INFO L175 Difference]: Start difference. First operand has 51 places, 49 transitions, 140 flow. Second operand 4 states and 137 transitions. [2024-11-28 04:45:50,601 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 75 transitions, 331 flow [2024-11-28 04:45:50,603 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 75 transitions, 328 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 04:45:50,604 INFO L231 Difference]: Finished difference. Result has 55 places, 51 transitions, 158 flow [2024-11-28 04:45:50,606 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=138, PETRI_DIFFERENCE_MINUEND_PLACES=50, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=55, PETRI_TRANSITIONS=51} [2024-11-28 04:45:50,608 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2024-11-28 04:45:50,608 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 51 transitions, 158 flow [2024-11-28 04:45:50,609 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:50,611 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:50,611 INFO L206 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] [2024-11-28 04:45:50,611 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-28 04:45:50,611 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:45:50,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash 902319917, now seen corresponding path program 1 times [2024-11-28 04:45:50,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:50,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119680934] [2024-11-28 04:45:50,612 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:50,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:50,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:50,884 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:45:50,884 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:50,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119680934] [2024-11-28 04:45:50,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119680934] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:50,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:50,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 04:45:50,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951894623] [2024-11-28 04:45:50,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:50,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 04:45:50,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:50,886 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 04:45:50,886 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 04:45:50,886 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 21 out of 50 [2024-11-28 04:45:50,887 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 51 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:50,887 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:50,887 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 21 of 50 [2024-11-28 04:45:50,887 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:51,851 INFO L124 PetriNetUnfolderBase]: 4269/6973 cut-off events. [2024-11-28 04:45:51,851 INFO L125 PetriNetUnfolderBase]: For 3095/3187 co-relation queries the response was YES. [2024-11-28 04:45:51,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15793 conditions, 6973 events. 4269/6973 cut-off events. For 3095/3187 co-relation queries the response was YES. Maximal size of possible extension queue 381. Compared 49570 event pairs, 3295 based on Foata normal form. 146/6691 useless extension candidates. Maximal degree in co-relation 13257. Up to 4867 conditions per place. [2024-11-28 04:45:51,898 INFO L140 encePairwiseOnDemand]: 46/50 looper letters, 54 selfloop transitions, 4 changer transitions 0/75 dead transitions. [2024-11-28 04:45:51,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 75 transitions, 346 flow [2024-11-28 04:45:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 04:45:51,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 04:45:51,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 135 transitions. [2024-11-28 04:45:51,900 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-28 04:45:51,900 INFO L175 Difference]: Start difference. First operand has 55 places, 51 transitions, 158 flow. Second operand 4 states and 135 transitions. [2024-11-28 04:45:51,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 75 transitions, 346 flow [2024-11-28 04:45:51,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 75 transitions, 342 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 04:45:51,903 INFO L231 Difference]: Finished difference. Result has 59 places, 53 transitions, 177 flow [2024-11-28 04:45:51,903 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=177, PETRI_PLACES=59, PETRI_TRANSITIONS=53} [2024-11-28 04:45:51,904 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 7 predicate places. [2024-11-28 04:45:51,904 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 53 transitions, 177 flow [2024-11-28 04:45:51,904 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:51,904 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:51,907 INFO L206 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] [2024-11-28 04:45:51,907 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-28 04:45:51,908 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:45:51,908 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:51,908 INFO L85 PathProgramCache]: Analyzing trace with hash -726296362, now seen corresponding path program 1 times [2024-11-28 04:45:51,908 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:51,908 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [118809580] [2024-11-28 04:45:51,909 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:45:51,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:45:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:45:52,533 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:52,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [118809580] [2024-11-28 04:45:52,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [118809580] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:52,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:52,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:45:52,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [33734807] [2024-11-28 04:45:52,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:52,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:45:52,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:52,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:45:52,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:52,647 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:45:52,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 53 transitions, 177 flow. Second operand has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:52,648 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:52,648 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:45:52,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:55,259 INFO L124 PetriNetUnfolderBase]: 10517/16212 cut-off events. [2024-11-28 04:45:55,259 INFO L125 PetriNetUnfolderBase]: For 6388/6420 co-relation queries the response was YES. [2024-11-28 04:45:55,409 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37418 conditions, 16212 events. 10517/16212 cut-off events. For 6388/6420 co-relation queries the response was YES. Maximal size of possible extension queue 826. Compared 114168 event pairs, 897 based on Foata normal form. 372/15755 useless extension candidates. Maximal degree in co-relation 30766. Up to 7997 conditions per place. [2024-11-28 04:45:55,458 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 117 selfloop transitions, 13 changer transitions 3/145 dead transitions. [2024-11-28 04:45:55,458 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 145 transitions, 697 flow [2024-11-28 04:45:55,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:45:55,459 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:45:55,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 251 transitions. [2024-11-28 04:45:55,460 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6275 [2024-11-28 04:45:55,460 INFO L175 Difference]: Start difference. First operand has 59 places, 53 transitions, 177 flow. Second operand 8 states and 251 transitions. [2024-11-28 04:45:55,460 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 145 transitions, 697 flow [2024-11-28 04:45:55,463 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 145 transitions, 692 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-28 04:45:55,465 INFO L231 Difference]: Finished difference. Result has 71 places, 65 transitions, 275 flow [2024-11-28 04:45:55,465 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=275, PETRI_PLACES=71, PETRI_TRANSITIONS=65} [2024-11-28 04:45:55,466 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 19 predicate places. [2024-11-28 04:45:55,466 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 65 transitions, 275 flow [2024-11-28 04:45:55,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.0) internal successors, (140), 7 states have internal predecessors, (140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:55,467 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:55,467 INFO L206 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] [2024-11-28 04:45:55,467 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-28 04:45:55,467 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:45:55,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:55,468 INFO L85 PathProgramCache]: Analyzing trace with hash 742029438, now seen corresponding path program 2 times [2024-11-28 04:45:55,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:55,468 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698779372] [2024-11-28 04:45:55,469 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:45:55,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:55,533 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:45:55,533 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:56,096 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:45:56,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:56,098 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698779372] [2024-11-28 04:45:56,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698779372] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:56,098 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:56,098 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:45:56,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355700435] [2024-11-28 04:45:56,099 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:56,099 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:45:56,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:56,100 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:45:56,101 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:45:56,173 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:45:56,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 65 transitions, 275 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:56,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:56,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:45:56,174 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:45:58,085 INFO L124 PetriNetUnfolderBase]: 10657/16804 cut-off events. [2024-11-28 04:45:58,085 INFO L125 PetriNetUnfolderBase]: For 15466/15508 co-relation queries the response was YES. [2024-11-28 04:45:58,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 45271 conditions, 16804 events. 10657/16804 cut-off events. For 15466/15508 co-relation queries the response was YES. Maximal size of possible extension queue 850. Compared 122362 event pairs, 2519 based on Foata normal form. 60/16721 useless extension candidates. Maximal degree in co-relation 36710. Up to 12299 conditions per place. [2024-11-28 04:45:58,228 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 73 selfloop transitions, 12 changer transitions 19/116 dead transitions. [2024-11-28 04:45:58,228 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 116 transitions, 636 flow [2024-11-28 04:45:58,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:45:58,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:45:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 186 transitions. [2024-11-28 04:45:58,230 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-28 04:45:58,230 INFO L175 Difference]: Start difference. First operand has 71 places, 65 transitions, 275 flow. Second operand 6 states and 186 transitions. [2024-11-28 04:45:58,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 116 transitions, 636 flow [2024-11-28 04:45:58,285 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 116 transitions, 634 flow, removed 1 selfloop flow, removed 0 redundant places. [2024-11-28 04:45:58,289 INFO L231 Difference]: Finished difference. Result has 79 places, 68 transitions, 336 flow [2024-11-28 04:45:58,289 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=273, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=65, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=336, PETRI_PLACES=79, PETRI_TRANSITIONS=68} [2024-11-28 04:45:58,290 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 27 predicate places. [2024-11-28 04:45:58,292 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 68 transitions, 336 flow [2024-11-28 04:45:58,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:58,293 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:45:58,293 INFO L206 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] [2024-11-28 04:45:58,293 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-28 04:45:58,293 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:45:58,294 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:45:58,294 INFO L85 PathProgramCache]: Analyzing trace with hash 347190996, now seen corresponding path program 3 times [2024-11-28 04:45:58,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:45:58,294 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1352058793] [2024-11-28 04:45:58,294 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:45:58,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:45:58,351 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 04:45:58,353 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:45:58,997 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:45:58,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:45:58,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1352058793] [2024-11-28 04:45:58,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1352058793] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:45:58,999 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:45:59,000 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:45:59,000 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898062741] [2024-11-28 04:45:59,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:45:59,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:45:59,002 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:45:59,002 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:45:59,003 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:45:59,109 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:45:59,110 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 68 transitions, 336 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:45:59,110 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:45:59,110 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:45:59,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:02,348 INFO L124 PetriNetUnfolderBase]: 15559/24059 cut-off events. [2024-11-28 04:46:02,349 INFO L125 PetriNetUnfolderBase]: For 30148/30184 co-relation queries the response was YES. [2024-11-28 04:46:02,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67260 conditions, 24059 events. 15559/24059 cut-off events. For 30148/30184 co-relation queries the response was YES. Maximal size of possible extension queue 1296. Compared 180870 event pairs, 3002 based on Foata normal form. 368/24280 useless extension candidates. Maximal degree in co-relation 54723. Up to 12713 conditions per place. [2024-11-28 04:46:02,512 INFO L140 encePairwiseOnDemand]: 39/50 looper letters, 163 selfloop transitions, 31 changer transitions 4/210 dead transitions. [2024-11-28 04:46:02,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 88 places, 210 transitions, 1261 flow [2024-11-28 04:46:02,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-28 04:46:02,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-11-28 04:46:02,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 350 transitions. [2024-11-28 04:46:02,515 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6363636363636364 [2024-11-28 04:46:02,515 INFO L175 Difference]: Start difference. First operand has 79 places, 68 transitions, 336 flow. Second operand 11 states and 350 transitions. [2024-11-28 04:46:02,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 88 places, 210 transitions, 1261 flow [2024-11-28 04:46:02,650 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 85 places, 210 transitions, 1222 flow, removed 8 selfloop flow, removed 3 redundant places. [2024-11-28 04:46:02,653 INFO L231 Difference]: Finished difference. Result has 93 places, 90 transitions, 559 flow [2024-11-28 04:46:02,654 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=316, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=559, PETRI_PLACES=93, PETRI_TRANSITIONS=90} [2024-11-28 04:46:02,654 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 41 predicate places. [2024-11-28 04:46:02,655 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 90 transitions, 559 flow [2024-11-28 04:46:02,655 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:02,655 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:02,655 INFO L206 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] [2024-11-28 04:46:02,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-28 04:46:02,655 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:46:02,656 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1144786386, now seen corresponding path program 4 times [2024-11-28 04:46:02,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:02,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013237750] [2024-11-28 04:46:02,657 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:46:02,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:02,692 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:46:02,692 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:03,105 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:03,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:03,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013237750] [2024-11-28 04:46:03,106 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013237750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:03,106 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:03,106 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:46:03,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4143521] [2024-11-28 04:46:03,106 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:03,107 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:03,107 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:03,107 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:03,108 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:03,185 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-28 04:46:03,186 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 90 transitions, 559 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:03,186 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:03,186 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-28 04:46:03,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:07,725 INFO L124 PetriNetUnfolderBase]: 22943/33645 cut-off events. [2024-11-28 04:46:07,726 INFO L125 PetriNetUnfolderBase]: For 58556/58602 co-relation queries the response was YES. [2024-11-28 04:46:07,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102978 conditions, 33645 events. 22943/33645 cut-off events. For 58556/58602 co-relation queries the response was YES. Maximal size of possible extension queue 1900. Compared 247524 event pairs, 2242 based on Foata normal form. 364/33801 useless extension candidates. Maximal degree in co-relation 89875. Up to 14739 conditions per place. [2024-11-28 04:46:07,947 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 152 selfloop transitions, 31 changer transitions 3/197 dead transitions. [2024-11-28 04:46:07,947 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 197 transitions, 1419 flow [2024-11-28 04:46:07,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:46:07,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:46:07,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 228 transitions. [2024-11-28 04:46:07,949 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6514285714285715 [2024-11-28 04:46:07,949 INFO L175 Difference]: Start difference. First operand has 93 places, 90 transitions, 559 flow. Second operand 7 states and 228 transitions. [2024-11-28 04:46:07,949 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 197 transitions, 1419 flow [2024-11-28 04:46:08,481 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 197 transitions, 1388 flow, removed 13 selfloop flow, removed 1 redundant places. [2024-11-28 04:46:08,484 INFO L231 Difference]: Finished difference. Result has 102 places, 105 transitions, 776 flow [2024-11-28 04:46:08,485 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=542, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=66, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=776, PETRI_PLACES=102, PETRI_TRANSITIONS=105} [2024-11-28 04:46:08,485 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 50 predicate places. [2024-11-28 04:46:08,485 INFO L471 AbstractCegarLoop]: Abstraction has has 102 places, 105 transitions, 776 flow [2024-11-28 04:46:08,486 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:08,486 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:08,486 INFO L206 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] [2024-11-28 04:46:08,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-28 04:46:08,486 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:46:08,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:08,487 INFO L85 PathProgramCache]: Analyzing trace with hash -1230279652, now seen corresponding path program 5 times [2024-11-28 04:46:08,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:08,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234387617] [2024-11-28 04:46:08,487 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 04:46:08,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:08,526 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 04:46:08,526 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:09,241 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:09,241 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:09,241 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234387617] [2024-11-28 04:46:09,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234387617] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:09,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:09,242 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:46:09,242 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [183314710] [2024-11-28 04:46:09,242 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:09,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:09,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:09,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:09,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:09,324 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:46:09,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 105 transitions, 776 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:09,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:09,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:46:09,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:13,777 INFO L124 PetriNetUnfolderBase]: 19263/29444 cut-off events. [2024-11-28 04:46:13,777 INFO L125 PetriNetUnfolderBase]: For 78178/78334 co-relation queries the response was YES. [2024-11-28 04:46:13,906 INFO L83 FinitePrefix]: Finished finitePrefix Result has 100551 conditions, 29444 events. 19263/29444 cut-off events. For 78178/78334 co-relation queries the response was YES. Maximal size of possible extension queue 1714. Compared 227513 event pairs, 4358 based on Foata normal form. 166/29156 useless extension candidates. Maximal degree in co-relation 86051. Up to 20735 conditions per place. [2024-11-28 04:46:13,990 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 134 selfloop transitions, 26 changer transitions 8/182 dead transitions. [2024-11-28 04:46:13,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 109 places, 182 transitions, 1416 flow [2024-11-28 04:46:13,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:46:13,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:46:13,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 249 transitions. [2024-11-28 04:46:13,993 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6225 [2024-11-28 04:46:13,993 INFO L175 Difference]: Start difference. First operand has 102 places, 105 transitions, 776 flow. Second operand 8 states and 249 transitions. [2024-11-28 04:46:13,993 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 109 places, 182 transitions, 1416 flow [2024-11-28 04:46:14,672 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 109 places, 182 transitions, 1406 flow, removed 5 selfloop flow, removed 0 redundant places. [2024-11-28 04:46:14,674 INFO L231 Difference]: Finished difference. Result has 113 places, 109 transitions, 898 flow [2024-11-28 04:46:14,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=753, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=898, PETRI_PLACES=113, PETRI_TRANSITIONS=109} [2024-11-28 04:46:14,675 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 61 predicate places. [2024-11-28 04:46:14,675 INFO L471 AbstractCegarLoop]: Abstraction has has 113 places, 109 transitions, 898 flow [2024-11-28 04:46:14,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:14,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:14,675 INFO L206 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] [2024-11-28 04:46:14,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 04:46:14,675 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:46:14,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:14,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1592473048, now seen corresponding path program 6 times [2024-11-28 04:46:14,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:14,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372863788] [2024-11-28 04:46:14,677 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 04:46:14,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:14,700 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 04:46:14,700 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:46:15,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:15,203 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372863788] [2024-11-28 04:46:15,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372863788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:15,203 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:15,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:46:15,204 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709467369] [2024-11-28 04:46:15,204 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:15,204 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:15,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:15,205 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:15,205 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:15,275 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:46:15,275 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 113 places, 109 transitions, 898 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:15,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:15,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:46:15,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:19,312 INFO L124 PetriNetUnfolderBase]: 18581/28684 cut-off events. [2024-11-28 04:46:19,312 INFO L125 PetriNetUnfolderBase]: For 88155/88389 co-relation queries the response was YES. [2024-11-28 04:46:19,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99351 conditions, 28684 events. 18581/28684 cut-off events. For 88155/88389 co-relation queries the response was YES. Maximal size of possible extension queue 1653. Compared 222574 event pairs, 4517 based on Foata normal form. 224/28315 useless extension candidates. Maximal degree in co-relation 83494. Up to 21947 conditions per place. [2024-11-28 04:46:19,520 INFO L140 encePairwiseOnDemand]: 41/50 looper letters, 134 selfloop transitions, 22 changer transitions 12/182 dead transitions. [2024-11-28 04:46:19,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 182 transitions, 1489 flow [2024-11-28 04:46:19,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:46:19,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:46:19,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 248 transitions. [2024-11-28 04:46:19,522 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.62 [2024-11-28 04:46:19,523 INFO L175 Difference]: Start difference. First operand has 113 places, 109 transitions, 898 flow. Second operand 8 states and 248 transitions. [2024-11-28 04:46:19,523 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 182 transitions, 1489 flow [2024-11-28 04:46:19,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 182 transitions, 1456 flow, removed 5 selfloop flow, removed 3 redundant places. [2024-11-28 04:46:19,961 INFO L231 Difference]: Finished difference. Result has 121 places, 109 transitions, 918 flow [2024-11-28 04:46:19,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=852, PETRI_DIFFERENCE_MINUEND_PLACES=110, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=19, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=918, PETRI_PLACES=121, PETRI_TRANSITIONS=109} [2024-11-28 04:46:19,962 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 69 predicate places. [2024-11-28 04:46:19,962 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 109 transitions, 918 flow [2024-11-28 04:46:19,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:19,963 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:19,963 INFO L206 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] [2024-11-28 04:46:19,963 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-28 04:46:19,963 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:46:19,964 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:19,964 INFO L85 PathProgramCache]: Analyzing trace with hash -1349610950, now seen corresponding path program 1 times [2024-11-28 04:46:19,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:19,964 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141806339] [2024-11-28 04:46:19,964 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 04:46:19,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 04:46:20,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:46:20,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:20,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141806339] [2024-11-28 04:46:20,562 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141806339] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:20,562 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:20,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:46:20,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216380115] [2024-11-28 04:46:20,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:20,563 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:46:20,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:20,564 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:46:20,565 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:46:20,659 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:46:20,659 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 109 transitions, 918 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:20,659 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:20,660 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:46:20,661 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:23,690 INFO L124 PetriNetUnfolderBase]: 15621/23365 cut-off events. [2024-11-28 04:46:23,691 INFO L125 PetriNetUnfolderBase]: For 65631/65707 co-relation queries the response was YES. [2024-11-28 04:46:24,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81254 conditions, 23365 events. 15621/23365 cut-off events. For 65631/65707 co-relation queries the response was YES. Maximal size of possible extension queue 1386. Compared 168952 event pairs, 3636 based on Foata normal form. 48/23035 useless extension candidates. Maximal degree in co-relation 77946. Up to 20023 conditions per place. [2024-11-28 04:46:24,188 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 102 selfloop transitions, 18 changer transitions 14/151 dead transitions. [2024-11-28 04:46:24,188 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 151 transitions, 1322 flow [2024-11-28 04:46:24,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 04:46:24,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 04:46:24,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 178 transitions. [2024-11-28 04:46:24,192 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5933333333333334 [2024-11-28 04:46:24,192 INFO L175 Difference]: Start difference. First operand has 121 places, 109 transitions, 918 flow. Second operand 6 states and 178 transitions. [2024-11-28 04:46:24,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 151 transitions, 1322 flow [2024-11-28 04:46:24,764 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 116 places, 151 transitions, 1238 flow, removed 18 selfloop flow, removed 8 redundant places. [2024-11-28 04:46:24,765 INFO L231 Difference]: Finished difference. Result has 118 places, 106 transitions, 846 flow [2024-11-28 04:46:24,765 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=836, PETRI_DIFFERENCE_MINUEND_PLACES=111, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=109, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=18, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=846, PETRI_PLACES=118, PETRI_TRANSITIONS=106} [2024-11-28 04:46:24,766 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 66 predicate places. [2024-11-28 04:46:24,766 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 106 transitions, 846 flow [2024-11-28 04:46:24,766 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:24,766 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:24,766 INFO L206 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] [2024-11-28 04:46:24,766 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-28 04:46:24,767 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:46:24,767 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:24,767 INFO L85 PathProgramCache]: Analyzing trace with hash -431941554, now seen corresponding path program 2 times [2024-11-28 04:46:24,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:24,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237644173] [2024-11-28 04:46:24,767 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 04:46:24,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:24,794 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-28 04:46:24,794 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:25,094 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 04:46:25,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:25,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237644173] [2024-11-28 04:46:25,096 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237644173] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:25,096 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:25,096 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-28 04:46:25,096 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919958017] [2024-11-28 04:46:25,096 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:25,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 04:46:25,097 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:25,097 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 04:46:25,097 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-28 04:46:25,186 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:46:25,187 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 106 transitions, 846 flow. Second operand has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:25,187 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:25,187 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:46:25,188 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:29,818 INFO L124 PetriNetUnfolderBase]: 22937/34323 cut-off events. [2024-11-28 04:46:29,818 INFO L125 PetriNetUnfolderBase]: For 101814/102716 co-relation queries the response was YES. [2024-11-28 04:46:30,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115788 conditions, 34323 events. 22937/34323 cut-off events. For 101814/102716 co-relation queries the response was YES. Maximal size of possible extension queue 1883. Compared 256683 event pairs, 5860 based on Foata normal form. 448/34154 useless extension candidates. Maximal degree in co-relation 97630. Up to 28748 conditions per place. [2024-11-28 04:46:30,447 INFO L140 encePairwiseOnDemand]: 43/50 looper letters, 117 selfloop transitions, 43 changer transitions 28/213 dead transitions. [2024-11-28 04:46:30,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 213 transitions, 2189 flow [2024-11-28 04:46:30,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 04:46:30,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 04:46:30,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 225 transitions. [2024-11-28 04:46:30,449 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5625 [2024-11-28 04:46:30,449 INFO L175 Difference]: Start difference. First operand has 118 places, 106 transitions, 846 flow. Second operand 8 states and 225 transitions. [2024-11-28 04:46:30,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 213 transitions, 2189 flow [2024-11-28 04:46:30,921 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 213 transitions, 1989 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-11-28 04:46:30,924 INFO L231 Difference]: Finished difference. Result has 121 places, 136 transitions, 1330 flow [2024-11-28 04:46:30,924 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=776, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=106, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=1330, PETRI_PLACES=121, PETRI_TRANSITIONS=136} [2024-11-28 04:46:30,924 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 69 predicate places. [2024-11-28 04:46:30,925 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 136 transitions, 1330 flow [2024-11-28 04:46:30,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 20.142857142857142) internal successors, (141), 7 states have internal predecessors, (141), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:30,925 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:30,925 INFO L206 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] [2024-11-28 04:46:30,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-28 04:46:30,925 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:46:30,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:30,926 INFO L85 PathProgramCache]: Analyzing trace with hash -619757104, now seen corresponding path program 3 times [2024-11-28 04:46:30,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:30,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [773260510] [2024-11-28 04:46:30,926 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 04:46:30,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:30,948 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-28 04:46:30,948 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:31,264 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:46:31,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:31,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [773260510] [2024-11-28 04:46:31,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [773260510] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:31,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:31,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:46:31,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605461051] [2024-11-28 04:46:31,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:31,265 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:31,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:31,266 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:31,266 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:31,335 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 15 out of 50 [2024-11-28 04:46:31,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 136 transitions, 1330 flow. Second operand has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:31,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:31,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 15 of 50 [2024-11-28 04:46:31,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 04:46:36,291 INFO L124 PetriNetUnfolderBase]: 23151/34073 cut-off events. [2024-11-28 04:46:36,291 INFO L125 PetriNetUnfolderBase]: For 106710/107010 co-relation queries the response was YES. [2024-11-28 04:46:36,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 127545 conditions, 34073 events. 23151/34073 cut-off events. For 106710/107010 co-relation queries the response was YES. Maximal size of possible extension queue 1969. Compared 245124 event pairs, 5982 based on Foata normal form. 688/34421 useless extension candidates. Maximal degree in co-relation 108168. Up to 25467 conditions per place. [2024-11-28 04:46:36,680 INFO L140 encePairwiseOnDemand]: 42/50 looper letters, 140 selfloop transitions, 47 changer transitions 0/199 dead transitions. [2024-11-28 04:46:36,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 199 transitions, 1975 flow [2024-11-28 04:46:36,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 04:46:36,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 04:46:36,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 215 transitions. [2024-11-28 04:46:36,682 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6142857142857143 [2024-11-28 04:46:36,682 INFO L175 Difference]: Start difference. First operand has 121 places, 136 transitions, 1330 flow. Second operand 7 states and 215 transitions. [2024-11-28 04:46:36,682 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 125 places, 199 transitions, 1975 flow [2024-11-28 04:46:37,733 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 199 transitions, 1899 flow, removed 19 selfloop flow, removed 3 redundant places. [2024-11-28 04:46:37,735 INFO L231 Difference]: Finished difference. Result has 125 places, 137 transitions, 1445 flow [2024-11-28 04:46:37,735 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=50, PETRI_DIFFERENCE_MINUEND_FLOW=1265, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=134, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=87, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1445, PETRI_PLACES=125, PETRI_TRANSITIONS=137} [2024-11-28 04:46:37,735 INFO L279 CegarLoopForPetriNet]: 52 programPoint places, 73 predicate places. [2024-11-28 04:46:37,735 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 137 transitions, 1445 flow [2024-11-28 04:46:37,736 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:37,736 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 04:46:37,736 INFO L206 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] [2024-11-28 04:46:37,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-28 04:46:37,736 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-28 04:46:37,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 04:46:37,737 INFO L85 PathProgramCache]: Analyzing trace with hash -1748618368, now seen corresponding path program 4 times [2024-11-28 04:46:37,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 04:46:37,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744667126] [2024-11-28 04:46:37,737 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 04:46:37,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 04:46:37,767 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 04:46:37,767 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 04:46:38,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-28 04:46:38,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 04:46:38,081 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744667126] [2024-11-28 04:46:38,081 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744667126] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 04:46:38,081 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 04:46:38,081 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-28 04:46:38,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720182517] [2024-11-28 04:46:38,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 04:46:38,082 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-28 04:46:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 04:46:38,082 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-28 04:46:38,082 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-28 04:46:38,146 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 50 [2024-11-28 04:46:38,147 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 137 transitions, 1445 flow. Second operand has 6 states, 6 states have (on average 20.666666666666668) internal successors, (124), 6 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 04:46:38,147 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 04:46:38,147 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 50 [2024-11-28 04:46:38,147 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand