./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-mult-4.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_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/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_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/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_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/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 b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-27 20:33:37,381 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-27 20:33:37,488 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-27 20:33:37,499 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-27 20:33:37,499 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-27 20:33:37,535 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-27 20:33:37,536 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-27 20:33:37,536 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-27 20:33:37,537 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-27 20:33:37,537 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-27 20:33:37,538 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-27 20:33:37,538 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-27 20:33:37,538 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-27 20:33:37,539 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-27 20:33:37,540 INFO L153 SettingsManager]: * Use SBE=true [2024-11-27 20:33:37,540 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-27 20:33:37,540 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-27 20:33:37,540 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-27 20:33:37,540 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-27 20:33:37,541 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-27 20:33:37,541 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-27 20:33:37,541 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-27 20:33:37,541 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-27 20:33:37,541 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-27 20:33:37,541 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-27 20:33:37,541 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-27 20:33:37,541 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-27 20:33:37,542 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-27 20:33:37,542 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-27 20:33:37,542 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:33:37,542 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:33:37,542 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:33:37,542 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:33:37,542 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:33:37,543 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-27 20:33:37,543 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-27 20:33:37,544 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-27 20:33:37,544 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_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/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 -> b81cf2d80bc77dedaac253250be737ceaa09f6e691f026864fe6fd5cb48c2489 [2024-11-27 20:33:37,892 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-27 20:33:37,909 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-27 20:33:37,913 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-27 20:33:37,915 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-27 20:33:37,915 INFO L274 PluginConnector]: CDTParser initialized [2024-11-27 20:33:37,918 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-27 20:33:40,890 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/data/6c63a584a/a164927f149a4e0a83a235de240e86ec/FLAG7119409ca [2024-11-27 20:33:41,151 INFO L384 CDTParser]: Found 1 translation units. [2024-11-27 20:33:41,152 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c [2024-11-27 20:33:41,161 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/data/6c63a584a/a164927f149a4e0a83a235de240e86ec/FLAG7119409ca [2024-11-27 20:33:41,177 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/data/6c63a584a/a164927f149a4e0a83a235de240e86ec [2024-11-27 20:33:41,180 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-27 20:33:41,182 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-27 20:33:41,183 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-27 20:33:41,184 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-27 20:33:41,189 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-27 20:33:41,190 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,191 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7396d387 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41, skipping insertion in model container [2024-11-27 20:33:41,191 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,209 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-27 20:33:41,443 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_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2024-11-27 20:33:41,449 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:33:41,460 INFO L200 MainTranslator]: Completed pre-run [2024-11-27 20:33:41,483 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_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/sv-benchmarks/c/weaver/popl20-mult-4.wvr.c[2664,2677] [2024-11-27 20:33:41,483 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-27 20:33:41,497 INFO L204 MainTranslator]: Completed translation [2024-11-27 20:33:41,497 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41 WrapperNode [2024-11-27 20:33:41,497 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-27 20:33:41,498 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-27 20:33:41,499 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-27 20:33:41,499 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-27 20:33:41,506 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,514 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,535 INFO L138 Inliner]: procedures = 22, calls = 22, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 96 [2024-11-27 20:33:41,536 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-27 20:33:41,538 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-27 20:33:41,538 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-27 20:33:41,538 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-27 20:33:41,545 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,545 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,547 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,561 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-11-27 20:33:41,561 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,561 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,570 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,573 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,581 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,586 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,587 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,593 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-27 20:33:41,594 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-27 20:33:41,594 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-27 20:33:41,594 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-27 20:33:41,596 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (1/1) ... [2024-11-27 20:33:41,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-27 20:33:41,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:41,634 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-27 20:33:41,640 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-27 20:33:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-27 20:33:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-27 20:33:41,673 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-27 20:33:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-27 20:33:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-27 20:33:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-27 20:33:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-27 20:33:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2024-11-27 20:33:41,674 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2024-11-27 20:33:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-27 20:33:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-27 20:33:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-27 20:33:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-27 20:33:41,675 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-27 20:33:41,676 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-27 20:33:41,777 INFO L234 CfgBuilder]: Building ICFG [2024-11-27 20:33:41,780 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-27 20:33:42,100 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-27 20:33:42,102 INFO L283 CfgBuilder]: Performing block encoding [2024-11-27 20:33:42,322 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-27 20:33:42,322 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-27 20:33:42,323 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:33:42 BoogieIcfgContainer [2024-11-27 20:33:42,323 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-27 20:33:42,326 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-27 20:33:42,329 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-27 20:33:42,338 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-27 20:33:42,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.11 08:33:41" (1/3) ... [2024-11-27 20:33:42,339 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f70d2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:33:42, skipping insertion in model container [2024-11-27 20:33:42,339 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.11 08:33:41" (2/3) ... [2024-11-27 20:33:42,340 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f70d2fe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.11 08:33:42, skipping insertion in model container [2024-11-27 20:33:42,340 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.11 08:33:42" (3/3) ... [2024-11-27 20:33:42,343 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-mult-4.wvr.c [2024-11-27 20:33:42,360 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-27 20:33:42,362 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-mult-4.wvr.c that has 5 procedures, 37 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-27 20:33:42,363 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-27 20:33:42,492 INFO L143 ThreadInstanceAdder]: Constructed 4 joinOtherThreadTransitions. [2024-11-27 20:33:42,533 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 49 places, 40 transitions, 108 flow [2024-11-27 20:33:42,577 INFO L124 PetriNetUnfolderBase]: 4/36 cut-off events. [2024-11-27 20:33:42,583 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-27 20:33:42,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53 conditions, 36 events. 4/36 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 53 event pairs, 0 based on Foata normal form. 0/31 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-11-27 20:33:42,592 INFO L82 GeneralOperation]: Start removeDead. Operand has 49 places, 40 transitions, 108 flow [2024-11-27 20:33:42,596 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 44 places, 35 transitions, 94 flow [2024-11-27 20:33:42,610 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-27 20:33:42,632 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;@dc3fd05, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-27 20:33:42,632 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-27 20:33:42,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-27 20:33:42,672 INFO L124 PetriNetUnfolderBase]: 4/34 cut-off events. [2024-11-27 20:33:42,672 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-27 20:33:42,672 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:42,673 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] [2024-11-27 20:33:42,674 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)] === [2024-11-27 20:33:42,679 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:42,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1673854268, now seen corresponding path program 1 times [2024-11-27 20:33:42,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:42,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583581512] [2024-11-27 20:33:42,689 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:42,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:42,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:43,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:43,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583581512] [2024-11-27 20:33:43,241 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583581512] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:43,241 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:43,241 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-27 20:33:43,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570505025] [2024-11-27 20:33:43,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:43,252 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-27 20:33:43,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:43,288 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-27 20:33:43,289 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-27 20:33:43,302 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 9 out of 40 [2024-11-27 20:33:43,305 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 35 transitions, 94 flow. Second operand has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:43,305 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:43,305 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 9 of 40 [2024-11-27 20:33:43,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:44,074 INFO L124 PetriNetUnfolderBase]: 3042/4202 cut-off events. [2024-11-27 20:33:44,075 INFO L125 PetriNetUnfolderBase]: For 323/323 co-relation queries the response was YES. [2024-11-27 20:33:44,096 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8602 conditions, 4202 events. 3042/4202 cut-off events. For 323/323 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 18197 event pairs, 763 based on Foata normal form. 125/4317 useless extension candidates. Maximal degree in co-relation 7596. Up to 3203 conditions per place. [2024-11-27 20:33:44,127 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 46 selfloop transitions, 3 changer transitions 2/56 dead transitions. [2024-11-27 20:33:44,128 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 56 transitions, 259 flow [2024-11-27 20:33:44,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-27 20:33:44,132 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-27 20:33:44,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 81 transitions. [2024-11-27 20:33:44,150 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.675 [2024-11-27 20:33:44,152 INFO L175 Difference]: Start difference. First operand has 44 places, 35 transitions, 94 flow. Second operand 3 states and 81 transitions. [2024-11-27 20:33:44,153 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 56 transitions, 259 flow [2024-11-27 20:33:44,169 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 56 transitions, 229 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-11-27 20:33:44,174 INFO L231 Difference]: Finished difference. Result has 39 places, 37 transitions, 101 flow [2024-11-27 20:33:44,178 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=101, PETRI_PLACES=39, PETRI_TRANSITIONS=37} [2024-11-27 20:33:44,184 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, -5 predicate places. [2024-11-27 20:33:44,186 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 37 transitions, 101 flow [2024-11-27 20:33:44,187 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 16.333333333333332) internal successors, (49), 3 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:44,187 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:44,187 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] [2024-11-27 20:33:44,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-27 20:33:44,188 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)] === [2024-11-27 20:33:44,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:44,191 INFO L85 PathProgramCache]: Analyzing trace with hash -769967416, now seen corresponding path program 1 times [2024-11-27 20:33:44,191 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:44,191 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1246446507] [2024-11-27 20:33:44,191 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:44,191 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:44,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:44,621 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:44,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:44,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1246446507] [2024-11-27 20:33:44,625 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1246446507] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:44,625 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:44,625 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:33:44,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26228480] [2024-11-27 20:33:44,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:44,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:33:44,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:44,628 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:33:44,630 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:33:44,638 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:33:44,639 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 37 transitions, 101 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:44,639 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:44,639 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:33:44,639 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:46,625 INFO L124 PetriNetUnfolderBase]: 11938/15928 cut-off events. [2024-11-27 20:33:46,625 INFO L125 PetriNetUnfolderBase]: For 925/925 co-relation queries the response was YES. [2024-11-27 20:33:46,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33792 conditions, 15928 events. 11938/15928 cut-off events. For 925/925 co-relation queries the response was YES. Maximal size of possible extension queue 624. Compared 80372 event pairs, 4214 based on Foata normal form. 0/12560 useless extension candidates. Maximal degree in co-relation 9332. Up to 8506 conditions per place. [2024-11-27 20:33:46,762 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 81 selfloop transitions, 10 changer transitions 0/96 dead transitions. [2024-11-27 20:33:46,762 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 96 transitions, 418 flow [2024-11-27 20:33:46,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:33:46,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:33:46,765 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 129 transitions. [2024-11-27 20:33:46,766 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.645 [2024-11-27 20:33:46,766 INFO L175 Difference]: Start difference. First operand has 39 places, 37 transitions, 101 flow. Second operand 5 states and 129 transitions. [2024-11-27 20:33:46,766 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 96 transitions, 418 flow [2024-11-27 20:33:46,769 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 96 transitions, 415 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:33:46,771 INFO L231 Difference]: Finished difference. Result has 45 places, 46 transitions, 165 flow [2024-11-27 20:33:46,771 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=45, PETRI_TRANSITIONS=46} [2024-11-27 20:33:46,774 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 1 predicate places. [2024-11-27 20:33:46,775 INFO L471 AbstractCegarLoop]: Abstraction has has 45 places, 46 transitions, 165 flow [2024-11-27 20:33:46,775 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:46,775 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:46,775 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] [2024-11-27 20:33:46,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-27 20:33:46,776 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)] === [2024-11-27 20:33:46,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:46,776 INFO L85 PathProgramCache]: Analyzing trace with hash 2016704284, now seen corresponding path program 2 times [2024-11-27 20:33:46,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:46,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45761065] [2024-11-27 20:33:46,777 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:33:46,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:46,843 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:33:46,843 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:47,053 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:47,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:47,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45761065] [2024-11-27 20:33:47,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45761065] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:47,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:47,054 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:33:47,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [985827873] [2024-11-27 20:33:47,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:47,054 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:33:47,054 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:47,055 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:33:47,055 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:33:47,075 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:33:47,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 46 transitions, 165 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:47,076 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:47,076 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:33:47,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:49,473 INFO L124 PetriNetUnfolderBase]: 17588/23615 cut-off events. [2024-11-27 20:33:49,474 INFO L125 PetriNetUnfolderBase]: For 10623/10701 co-relation queries the response was YES. [2024-11-27 20:33:49,528 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62145 conditions, 23615 events. 17588/23615 cut-off events. For 10623/10701 co-relation queries the response was YES. Maximal size of possible extension queue 995. Compared 127437 event pairs, 3092 based on Foata normal form. 682/23877 useless extension candidates. Maximal degree in co-relation 35465. Up to 13004 conditions per place. [2024-11-27 20:33:49,678 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 85 selfloop transitions, 8 changer transitions 2/100 dead transitions. [2024-11-27 20:33:49,679 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 100 transitions, 538 flow [2024-11-27 20:33:49,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:33:49,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:33:49,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 106 transitions. [2024-11-27 20:33:49,685 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6625 [2024-11-27 20:33:49,685 INFO L175 Difference]: Start difference. First operand has 45 places, 46 transitions, 165 flow. Second operand 4 states and 106 transitions. [2024-11-27 20:33:49,685 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 100 transitions, 538 flow [2024-11-27 20:33:49,704 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 100 transitions, 538 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:33:49,705 INFO L231 Difference]: Finished difference. Result has 51 places, 54 transitions, 251 flow [2024-11-27 20:33:49,706 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=165, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=251, PETRI_PLACES=51, PETRI_TRANSITIONS=54} [2024-11-27 20:33:49,707 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 7 predicate places. [2024-11-27 20:33:49,708 INFO L471 AbstractCegarLoop]: Abstraction has has 51 places, 54 transitions, 251 flow [2024-11-27 20:33:49,708 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:49,708 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:49,708 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] [2024-11-27 20:33:49,709 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-27 20:33:49,709 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)] === [2024-11-27 20:33:49,709 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:49,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1988588238, now seen corresponding path program 1 times [2024-11-27 20:33:49,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:49,710 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53346467] [2024-11-27 20:33:49,711 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:49,711 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:49,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:50,010 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:50,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:50,010 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53346467] [2024-11-27 20:33:50,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53346467] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:50,010 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:50,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:33:50,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144816428] [2024-11-27 20:33:50,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:50,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:33:50,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:50,013 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:33:50,014 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:33:50,022 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:33:50,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 54 transitions, 251 flow. Second operand has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:50,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:50,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:33:50,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:52,261 INFO L124 PetriNetUnfolderBase]: 19378/26039 cut-off events. [2024-11-27 20:33:52,261 INFO L125 PetriNetUnfolderBase]: For 26707/26729 co-relation queries the response was YES. [2024-11-27 20:33:52,320 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76682 conditions, 26039 events. 19378/26039 cut-off events. For 26707/26729 co-relation queries the response was YES. Maximal size of possible extension queue 1062. Compared 142570 event pairs, 5695 based on Foata normal form. 672/26138 useless extension candidates. Maximal degree in co-relation 42299. Up to 11363 conditions per place. [2024-11-27 20:33:52,427 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 86 selfloop transitions, 7 changer transitions 17/115 dead transitions. [2024-11-27 20:33:52,427 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 115 transitions, 698 flow [2024-11-27 20:33:52,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:33:52,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:33:52,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 130 transitions. [2024-11-27 20:33:52,429 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-27 20:33:52,430 INFO L175 Difference]: Start difference. First operand has 51 places, 54 transitions, 251 flow. Second operand 5 states and 130 transitions. [2024-11-27 20:33:52,430 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 115 transitions, 698 flow [2024-11-27 20:33:52,452 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 115 transitions, 698 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-27 20:33:52,454 INFO L231 Difference]: Finished difference. Result has 57 places, 54 transitions, 296 flow [2024-11-27 20:33:52,454 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=251, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=296, PETRI_PLACES=57, PETRI_TRANSITIONS=54} [2024-11-27 20:33:52,455 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 13 predicate places. [2024-11-27 20:33:52,455 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 54 transitions, 296 flow [2024-11-27 20:33:52,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.8) internal successors, (59), 5 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:52,456 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:52,456 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] [2024-11-27 20:33:52,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-27 20:33:52,456 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)] === [2024-11-27 20:33:52,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:52,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1213499480, now seen corresponding path program 3 times [2024-11-27 20:33:52,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:52,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458697268] [2024-11-27 20:33:52,457 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:33:52,457 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:52,487 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-27 20:33:52,487 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:52,579 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:52,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:52,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458697268] [2024-11-27 20:33:52,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458697268] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:52,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:52,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:33:52,580 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48323350] [2024-11-27 20:33:52,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:52,580 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:33:52,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:52,581 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:33:52,581 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:33:52,589 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:33:52,589 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 54 transitions, 296 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:52,589 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:52,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:33:52,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:55,147 INFO L124 PetriNetUnfolderBase]: 24003/32446 cut-off events. [2024-11-27 20:33:55,147 INFO L125 PetriNetUnfolderBase]: For 56027/56101 co-relation queries the response was YES. [2024-11-27 20:33:55,201 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109166 conditions, 32446 events. 24003/32446 cut-off events. For 56027/56101 co-relation queries the response was YES. Maximal size of possible extension queue 1287. Compared 183562 event pairs, 7197 based on Foata normal form. 645/32321 useless extension candidates. Maximal degree in co-relation 43013. Up to 16193 conditions per place. [2024-11-27 20:33:55,464 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 80 selfloop transitions, 17 changer transitions 2/104 dead transitions. [2024-11-27 20:33:55,464 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 104 transitions, 741 flow [2024-11-27 20:33:55,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:33:55,465 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:33:55,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 104 transitions. [2024-11-27 20:33:55,466 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.65 [2024-11-27 20:33:55,466 INFO L175 Difference]: Start difference. First operand has 57 places, 54 transitions, 296 flow. Second operand 4 states and 104 transitions. [2024-11-27 20:33:55,466 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 104 transitions, 741 flow [2024-11-27 20:33:55,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 104 transitions, 703 flow, removed 9 selfloop flow, removed 2 redundant places. [2024-11-27 20:33:55,620 INFO L231 Difference]: Finished difference. Result has 59 places, 60 transitions, 410 flow [2024-11-27 20:33:55,621 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=410, PETRI_PLACES=59, PETRI_TRANSITIONS=60} [2024-11-27 20:33:55,622 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 15 predicate places. [2024-11-27 20:33:55,623 INFO L471 AbstractCegarLoop]: Abstraction has has 59 places, 60 transitions, 410 flow [2024-11-27 20:33:55,624 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:55,624 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:55,624 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] [2024-11-27 20:33:55,624 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-27 20:33:55,624 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)] === [2024-11-27 20:33:55,625 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:55,629 INFO L85 PathProgramCache]: Analyzing trace with hash 314532002, now seen corresponding path program 2 times [2024-11-27 20:33:55,629 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:55,629 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992415125] [2024-11-27 20:33:55,630 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:33:55,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:55,668 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-27 20:33:55,668 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:33:55,775 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:55,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:55,776 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992415125] [2024-11-27 20:33:55,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992415125] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:33:55,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:33:55,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-27 20:33:55,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [999105203] [2024-11-27 20:33:55,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:55,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:33:55,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:55,778 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:33:55,779 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-27 20:33:55,791 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:33:55,791 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 60 transitions, 410 flow. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:55,791 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:55,791 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:33:55,791 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:33:57,932 INFO L124 PetriNetUnfolderBase]: 23940/32308 cut-off events. [2024-11-27 20:33:57,933 INFO L125 PetriNetUnfolderBase]: For 67750/67820 co-relation queries the response was YES. [2024-11-27 20:33:58,021 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114882 conditions, 32308 events. 23940/32308 cut-off events. For 67750/67820 co-relation queries the response was YES. Maximal size of possible extension queue 1222. Compared 180535 event pairs, 7838 based on Foata normal form. 66/31640 useless extension candidates. Maximal degree in co-relation 45467. Up to 18727 conditions per place. [2024-11-27 20:33:58,138 INFO L140 encePairwiseOnDemand]: 34/40 looper letters, 69 selfloop transitions, 8 changer transitions 16/98 dead transitions. [2024-11-27 20:33:58,138 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 98 transitions, 744 flow [2024-11-27 20:33:58,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:33:58,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:33:58,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 101 transitions. [2024-11-27 20:33:58,139 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63125 [2024-11-27 20:33:58,139 INFO L175 Difference]: Start difference. First operand has 59 places, 60 transitions, 410 flow. Second operand 4 states and 101 transitions. [2024-11-27 20:33:58,139 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 98 transitions, 744 flow [2024-11-27 20:33:58,305 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 98 transitions, 723 flow, removed 6 selfloop flow, removed 2 redundant places. [2024-11-27 20:33:58,307 INFO L231 Difference]: Finished difference. Result has 60 places, 59 transitions, 403 flow [2024-11-27 20:33:58,307 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=389, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=403, PETRI_PLACES=60, PETRI_TRANSITIONS=59} [2024-11-27 20:33:58,308 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 16 predicate places. [2024-11-27 20:33:58,308 INFO L471 AbstractCegarLoop]: Abstraction has has 60 places, 59 transitions, 403 flow [2024-11-27 20:33:58,308 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:58,308 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:33:58,309 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] [2024-11-27 20:33:58,309 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-27 20:33:58,309 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)] === [2024-11-27 20:33:58,310 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:33:58,310 INFO L85 PathProgramCache]: Analyzing trace with hash -577972391, now seen corresponding path program 1 times [2024-11-27 20:33:58,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:33:58,310 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581995776] [2024-11-27 20:33:58,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:58,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:33:58,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:58,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:58,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:33:58,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581995776] [2024-11-27 20:33:58,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581995776] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:58,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [419474720] [2024-11-27 20:33:58,539 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:33:58,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:33:58,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:33:58,544 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:33:58,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-27 20:33:58,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:33:58,650 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:33:58,656 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:33:58,726 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:58,728 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-27 20:33:58,804 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:33:58,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [419474720] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-27 20:33:58,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-27 20:33:58,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6, 5] total 8 [2024-11-27 20:33:58,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055212405] [2024-11-27 20:33:58,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:33:58,807 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-27 20:33:58,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:33:58,807 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-27 20:33:58,807 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:33:58,824 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:33:58,824 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 59 transitions, 403 flow. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:33:58,824 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:33:58,824 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:33:58,824 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:01,376 INFO L124 PetriNetUnfolderBase]: 25452/34362 cut-off events. [2024-11-27 20:34:01,377 INFO L125 PetriNetUnfolderBase]: For 81504/81628 co-relation queries the response was YES. [2024-11-27 20:34:01,475 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122763 conditions, 34362 events. 25452/34362 cut-off events. For 81504/81628 co-relation queries the response was YES. Maximal size of possible extension queue 1316. Compared 194188 event pairs, 5240 based on Foata normal form. 834/34492 useless extension candidates. Maximal degree in co-relation 55979. Up to 16639 conditions per place. [2024-11-27 20:34:01,597 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 84 selfloop transitions, 13 changer transitions 3/105 dead transitions. [2024-11-27 20:34:01,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 105 transitions, 867 flow [2024-11-27 20:34:01,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-27 20:34:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-27 20:34:01,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 102 transitions. [2024-11-27 20:34:01,598 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6375 [2024-11-27 20:34:01,599 INFO L175 Difference]: Start difference. First operand has 60 places, 59 transitions, 403 flow. Second operand 4 states and 102 transitions. [2024-11-27 20:34:01,599 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 105 transitions, 867 flow [2024-11-27 20:34:01,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 105 transitions, 831 flow, removed 4 selfloop flow, removed 3 redundant places. [2024-11-27 20:34:01,732 INFO L231 Difference]: Finished difference. Result has 61 places, 62 transitions, 453 flow [2024-11-27 20:34:01,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=379, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=453, PETRI_PLACES=61, PETRI_TRANSITIONS=62} [2024-11-27 20:34:01,733 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 17 predicate places. [2024-11-27 20:34:01,733 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 62 transitions, 453 flow [2024-11-27 20:34:01,733 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:01,733 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:01,733 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] [2024-11-27 20:34:01,740 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-27 20:34:01,934 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2024-11-27 20:34:01,934 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)] === [2024-11-27 20:34:01,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:01,935 INFO L85 PathProgramCache]: Analyzing trace with hash 553302725, now seen corresponding path program 1 times [2024-11-27 20:34:01,935 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:01,935 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694895050] [2024-11-27 20:34:01,935 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-27 20:34:01,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:01,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-27 20:34:02,145 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:02,145 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:02,145 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694895050] [2024-11-27 20:34:02,145 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694895050] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:02,145 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:02,145 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:34:02,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667066130] [2024-11-27 20:34:02,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:02,146 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:02,146 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:02,146 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:02,146 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:02,154 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:34:02,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 62 transitions, 453 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:02,155 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:02,155 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:34:02,155 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:05,383 INFO L124 PetriNetUnfolderBase]: 31221/41889 cut-off events. [2024-11-27 20:34:05,384 INFO L125 PetriNetUnfolderBase]: For 126304/126320 co-relation queries the response was YES. [2024-11-27 20:34:05,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 160698 conditions, 41889 events. 31221/41889 cut-off events. For 126304/126320 co-relation queries the response was YES. Maximal size of possible extension queue 1577. Compared 240007 event pairs, 8708 based on Foata normal form. 252/41315 useless extension candidates. Maximal degree in co-relation 71792. Up to 20472 conditions per place. [2024-11-27 20:34:05,768 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 130 selfloop transitions, 15 changer transitions 3/153 dead transitions. [2024-11-27 20:34:05,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 153 transitions, 1486 flow [2024-11-27 20:34:05,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:05,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:05,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 126 transitions. [2024-11-27 20:34:05,770 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.63 [2024-11-27 20:34:05,771 INFO L175 Difference]: Start difference. First operand has 61 places, 62 transitions, 453 flow. Second operand 5 states and 126 transitions. [2024-11-27 20:34:05,771 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 153 transitions, 1486 flow [2024-11-27 20:34:05,909 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 153 transitions, 1449 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-27 20:34:05,912 INFO L231 Difference]: Finished difference. Result has 66 places, 71 transitions, 578 flow [2024-11-27 20:34:05,913 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=438, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=53, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=578, PETRI_PLACES=66, PETRI_TRANSITIONS=71} [2024-11-27 20:34:05,913 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 22 predicate places. [2024-11-27 20:34:05,914 INFO L471 AbstractCegarLoop]: Abstraction has has 66 places, 71 transitions, 578 flow [2024-11-27 20:34:05,914 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:05,914 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:05,914 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] [2024-11-27 20:34:05,914 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-27 20:34:05,914 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)] === [2024-11-27 20:34:05,915 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1746369823, now seen corresponding path program 2 times [2024-11-27 20:34:05,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:05,915 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071538210] [2024-11-27 20:34:05,915 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-27 20:34:05,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:05,937 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:05,937 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:06,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:06,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:06,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071538210] [2024-11-27 20:34:06,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071538210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:06,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:06,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:34:06,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1929957026] [2024-11-27 20:34:06,151 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:06,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:34:06,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:06,152 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:34:06,152 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:34:06,165 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:34:06,166 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 71 transitions, 578 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:06,166 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:06,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:34:06,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:10,487 INFO L124 PetriNetUnfolderBase]: 37917/51398 cut-off events. [2024-11-27 20:34:10,487 INFO L125 PetriNetUnfolderBase]: For 198329/198365 co-relation queries the response was YES. [2024-11-27 20:34:10,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 216868 conditions, 51398 events. 37917/51398 cut-off events. For 198329/198365 co-relation queries the response was YES. Maximal size of possible extension queue 2013. Compared 311936 event pairs, 5428 based on Foata normal form. 2317/52692 useless extension candidates. Maximal degree in co-relation 102477. Up to 18470 conditions per place. [2024-11-27 20:34:10,828 INFO L140 encePairwiseOnDemand]: 30/40 looper letters, 143 selfloop transitions, 30 changer transitions 6/184 dead transitions. [2024-11-27 20:34:10,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 184 transitions, 1734 flow [2024-11-27 20:34:10,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-27 20:34:10,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-27 20:34:10,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 180 transitions. [2024-11-27 20:34:10,830 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6428571428571429 [2024-11-27 20:34:10,830 INFO L175 Difference]: Start difference. First operand has 66 places, 71 transitions, 578 flow. Second operand 7 states and 180 transitions. [2024-11-27 20:34:10,830 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 184 transitions, 1734 flow [2024-11-27 20:34:11,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 184 transitions, 1717 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-27 20:34:11,290 INFO L231 Difference]: Finished difference. Result has 75 places, 82 transitions, 804 flow [2024-11-27 20:34:11,290 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=566, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=804, PETRI_PLACES=75, PETRI_TRANSITIONS=82} [2024-11-27 20:34:11,291 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 31 predicate places. [2024-11-27 20:34:11,291 INFO L471 AbstractCegarLoop]: Abstraction has has 75 places, 82 transitions, 804 flow [2024-11-27 20:34:11,291 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:11,291 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:11,291 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] [2024-11-27 20:34:11,292 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-27 20:34:11,292 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)] === [2024-11-27 20:34:11,292 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:11,292 INFO L85 PathProgramCache]: Analyzing trace with hash 1191669365, now seen corresponding path program 3 times [2024-11-27 20:34:11,293 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:11,293 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683001185] [2024-11-27 20:34:11,293 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-27 20:34:11,293 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:11,313 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-11-27 20:34:11,313 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:11,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:11,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:11,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683001185] [2024-11-27 20:34:11,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683001185] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:11,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:11,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-27 20:34:11,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027956327] [2024-11-27 20:34:11,455 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:11,455 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:11,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:11,456 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:11,456 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-27 20:34:11,470 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:34:11,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 82 transitions, 804 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:11,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:11,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:34:11,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:17,374 INFO L124 PetriNetUnfolderBase]: 47971/65088 cut-off events. [2024-11-27 20:34:17,374 INFO L125 PetriNetUnfolderBase]: For 334538/334628 co-relation queries the response was YES. [2024-11-27 20:34:17,523 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294607 conditions, 65088 events. 47971/65088 cut-off events. For 334538/334628 co-relation queries the response was YES. Maximal size of possible extension queue 2391. Compared 400891 event pairs, 15652 based on Foata normal form. 784/64412 useless extension candidates. Maximal degree in co-relation 158986. Up to 29280 conditions per place. [2024-11-27 20:34:17,727 INFO L140 encePairwiseOnDemand]: 33/40 looper letters, 135 selfloop transitions, 11 changer transitions 13/164 dead transitions. [2024-11-27 20:34:17,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 164 transitions, 1831 flow [2024-11-27 20:34:17,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:17,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:17,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 120 transitions. [2024-11-27 20:34:17,729 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6 [2024-11-27 20:34:17,729 INFO L175 Difference]: Start difference. First operand has 75 places, 82 transitions, 804 flow. Second operand 5 states and 120 transitions. [2024-11-27 20:34:17,729 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 164 transitions, 1831 flow [2024-11-27 20:34:20,199 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 164 transitions, 1760 flow, removed 11 selfloop flow, removed 2 redundant places. [2024-11-27 20:34:20,201 INFO L231 Difference]: Finished difference. Result has 79 places, 84 transitions, 876 flow [2024-11-27 20:34:20,201 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=763, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=876, PETRI_PLACES=79, PETRI_TRANSITIONS=84} [2024-11-27 20:34:20,201 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 35 predicate places. [2024-11-27 20:34:20,201 INFO L471 AbstractCegarLoop]: Abstraction has has 79 places, 84 transitions, 876 flow [2024-11-27 20:34:20,202 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:20,202 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:20,202 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] [2024-11-27 20:34:20,202 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-27 20:34:20,202 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)] === [2024-11-27 20:34:20,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:20,203 INFO L85 PathProgramCache]: Analyzing trace with hash -622256695, now seen corresponding path program 4 times [2024-11-27 20:34:20,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:20,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73163929] [2024-11-27 20:34:20,203 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:34:20,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:20,220 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:34:20,220 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:20,538 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:20,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73163929] [2024-11-27 20:34:20,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73163929] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-27 20:34:20,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128705720] [2024-11-27 20:34:20,539 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-27 20:34:20,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-27 20:34:20,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-27 20:34:20,542 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-27 20:34:20,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-27 20:34:20,628 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-27 20:34:20,628 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:20,630 INFO L256 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-27 20:34:20,631 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-27 20:34:20,704 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-27 20:34:20,704 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-27 20:34:20,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128705720] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:20,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-27 20:34:20,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [4] total 8 [2024-11-27 20:34:20,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1237776856] [2024-11-27 20:34:20,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:20,705 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-27 20:34:20,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:20,707 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-27 20:34:20,707 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-27 20:34:20,721 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:34:20,722 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 84 transitions, 876 flow. Second operand has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:20,722 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:20,722 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:34:20,722 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:28,316 INFO L124 PetriNetUnfolderBase]: 65238/87686 cut-off events. [2024-11-27 20:34:28,316 INFO L125 PetriNetUnfolderBase]: For 611359/611555 co-relation queries the response was YES. [2024-11-27 20:34:28,581 INFO L83 FinitePrefix]: Finished finitePrefix Result has 435219 conditions, 87686 events. 65238/87686 cut-off events. For 611359/611555 co-relation queries the response was YES. Maximal size of possible extension queue 3601. Compared 554724 event pairs, 16721 based on Foata normal form. 1236/85794 useless extension candidates. Maximal degree in co-relation 178404. Up to 37335 conditions per place. [2024-11-27 20:34:28,914 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 184 selfloop transitions, 19 changer transitions 3/211 dead transitions. [2024-11-27 20:34:28,914 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 211 transitions, 2688 flow [2024-11-27 20:34:28,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-27 20:34:28,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-27 20:34:28,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 119 transitions. [2024-11-27 20:34:28,915 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.595 [2024-11-27 20:34:28,915 INFO L175 Difference]: Start difference. First operand has 79 places, 84 transitions, 876 flow. Second operand 5 states and 119 transitions. [2024-11-27 20:34:28,915 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 211 transitions, 2688 flow [2024-11-27 20:34:31,889 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 211 transitions, 2495 flow, removed 73 selfloop flow, removed 3 redundant places. [2024-11-27 20:34:31,891 INFO L231 Difference]: Finished difference. Result has 82 places, 95 transitions, 984 flow [2024-11-27 20:34:31,891 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=806, PETRI_DIFFERENCE_MINUEND_PLACES=75, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=984, PETRI_PLACES=82, PETRI_TRANSITIONS=95} [2024-11-27 20:34:31,892 INFO L279 CegarLoopForPetriNet]: 44 programPoint places, 38 predicate places. [2024-11-27 20:34:31,892 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 95 transitions, 984 flow [2024-11-27 20:34:31,892 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.4) internal successors, (62), 5 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:31,892 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-27 20:34:31,892 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] [2024-11-27 20:34:31,898 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-27 20:34:32,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_f8b6f7c3-dac7-4c5b-afe4-98cfb90c3cfa/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-11-27 20:34:32,093 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)] === [2024-11-27 20:34:32,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-27 20:34:32,093 INFO L85 PathProgramCache]: Analyzing trace with hash -104059753, now seen corresponding path program 5 times [2024-11-27 20:34:32,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-27 20:34:32,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642187487] [2024-11-27 20:34:32,093 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-27 20:34:32,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-27 20:34:32,120 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-27 20:34:32,120 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-27 20:34:32,257 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-27 20:34:32,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-27 20:34:32,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642187487] [2024-11-27 20:34:32,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642187487] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-27 20:34:32,258 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-27 20:34:32,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-27 20:34:32,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410159561] [2024-11-27 20:34:32,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-27 20:34:32,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-27 20:34:32,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-27 20:34:32,259 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-27 20:34:32,260 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-27 20:34:32,282 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 40 [2024-11-27 20:34:32,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 95 transitions, 984 flow. Second operand has 6 states, 6 states have (on average 11.5) internal successors, (69), 6 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-27 20:34:32,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-27 20:34:32,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 40 [2024-11-27 20:34:32,283 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-27 20:34:39,968 INFO L124 PetriNetUnfolderBase]: 64011/86305 cut-off events. [2024-11-27 20:34:39,968 INFO L125 PetriNetUnfolderBase]: For 518443/518690 co-relation queries the response was YES. [2024-11-27 20:34:40,186 INFO L83 FinitePrefix]: Finished finitePrefix Result has 417257 conditions, 86305 events. 64011/86305 cut-off events. For 518443/518690 co-relation queries the response was YES. Maximal size of possible extension queue 3539. Compared 547631 event pairs, 20640 based on Foata normal form. 1459/85119 useless extension candidates. Maximal degree in co-relation 267981. Up to 40848 conditions per place. [2024-11-27 20:34:40,477 INFO L140 encePairwiseOnDemand]: 31/40 looper letters, 190 selfloop transitions, 54 changer transitions 4/253 dead transitions. [2024-11-27 20:34:40,478 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 253 transitions, 3178 flow [2024-11-27 20:34:40,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-27 20:34:40,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-27 20:34:40,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 146 transitions. [2024-11-27 20:34:40,479 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6083333333333333 [2024-11-27 20:34:40,479 INFO L175 Difference]: Start difference. First operand has 82 places, 95 transitions, 984 flow. Second operand 6 states and 146 transitions. [2024-11-27 20:34:40,479 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 87 places, 253 transitions, 3178 flow